@import url(https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap);:root{--primary-light:#2563eb;--primary-dark:#1e2a5e;--primary-50:#eff6ff;--primary-100:#dbeafe;--primary-200:#bfdbfe;--accent:#4f46e5;--accent-light:#6366f1;--accent-50:#eef2ff;--success:#16a34a;--success-light:#dcfce7;--warning-light:#fef3c7;--danger:#dc2626;--danger-light:#fee2e2;--info:#0ea5e9;--info-light:#e0f2fe;--bg:#f8fafc;--bg-card:#fff;--bg-sidebar:#0f172a;--bg-sidebar-hover:#1e293b;--border:#e2e8f0;--border-light:#f1f5f9;--text:#1f2937;--text-secondary:#64748b;--text-muted:#94a3b8;--text-inverse:#f8fafc;--shadow-sm:0 1px 2px #0000000d;--shadow:0 1px 3px #00000014,0 1px 2px #0000000a;--shadow-md:0 4px 6px -1px #00000014,0 2px 4px -2px #0000000d;--shadow-lg:0 10px 15px -3px #00000014,0 4px 6px -4px #00000008;--shadow-xl:0 20px 25px -5px #00000014,0 8px 10px -6px #00000008;--radius-sm:6px;--radius:10px;--radius-lg:14px;--radius-xl:20px;--ease:cubic-bezier(0.4,0,0.2,1);--duration:0.2s}*,:after,:before{box-sizing:border-box;margin:0;padding:0}html{font-size:16px}body{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:#f8fafc;background:var(--bg);color:#1f2937;color:var(--text);font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.6;margin:0}code{font-family:JetBrains Mono,source-code-pro,Menlo,Monaco,Consolas,monospace}::-webkit-scrollbar{height:6px;width:6px}::-webkit-scrollbar-track{background:#0000}::-webkit-scrollbar-thumb{background:#94a3b8;background:var(--text-muted);border-radius:10px}::-webkit-scrollbar-thumb:hover{background:#64748b;background:var(--text-secondary)}@keyframes fadeInUp{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}@keyframes slideInRight{0%{opacity:0;transform:translateX(12px)}to{opacity:1;transform:translateX(0)}}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}@keyframes scaleIn{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}.skeleton{animation:shimmer 1.5s infinite;background:linear-gradient(90deg,#f1f5f9 25%,#e2e8f0 50%,#f1f5f9 75%);background-size:200% 100%}.lms-toast,.skeleton{border-radius:10px;border-radius:var(--radius)}.lms-toast{align-items:center;animation:slideInRight .3s cubic-bezier(.4,0,.2,1);animation:slideInRight .3s var(--ease);box-shadow:0 10px 15px -3px #00000014,0 4px 6px -4px #00000008;box-shadow:var(--shadow-lg);display:flex;font-size:.875rem;font-weight:500;gap:10px;max-width:400px;padding:14px 20px;position:fixed;right:24px;top:24px;z-index:10000}.lms-toast-success{background:#16a34a;background:var(--success);color:#fff}.lms-toast-error{background:#dc2626;background:var(--danger);color:#fff}.lms-toast-info{background:#0ea5e9;background:var(--info);color:#fff}.lms-toast-warning{background:#f59e0b;background:var(--warning);color:#1f2937}.lms-toast .toast-close{background:none;border:none;color:inherit;cursor:pointer;font-size:1.1rem;margin-left:auto;opacity:.8}.lms-toast .toast-close:hover{opacity:1}.course-wizard-overlay{align-items:stretch;animation:cwFadeIn .25s ease;background:#0f172a73;display:flex;inset:0;justify-content:stretch;position:fixed;z-index:1000}.course-wizard-modal{background:#f8fafc;display:flex;flex-direction:column;height:100vh;overflow-y:auto;width:100%}.wizard-stepper{background:#fff;border-bottom:1px solid #e2e8f0;flex-shrink:0;gap:0;justify-content:center;padding:18px 48px}.step,.wizard-stepper{align-items:center;display:flex}.step{gap:12px;padding:0 32px;position:relative}.step .step-circle{align-items:center;background:#e2e8f0;border-radius:50%;color:#94a3b8;display:flex;flex-shrink:0;font-size:15px;font-weight:700;height:36px;justify-content:center;transition:all .2s ease;width:36px}.step.active .step-circle,.step.current .step-circle{background:#1e3a8a;color:#fff}.step.current .step-circle{box-shadow:0 0 0 4px #1e3a8a26}.step-label{color:#94a3b8;font-size:14px;font-weight:500;white-space:nowrap}.step.active .step-label{color:#1e3a8a;font-weight:600}.step:after{background:#e2e8f0;content:"";height:2px;position:absolute;right:-24px;top:50%;transform:translateY(-50%);width:48px}.step.active:after{background:#1e3a8a}.step:last-child:after{display:none}.wizard-step{box-sizing:border-box;flex:1 1;margin:0 auto;max-width:900px;padding:32px 48px 40px;width:100%}.wizard-step h3{color:#1e293b;font-size:20px;font-weight:700;letter-spacing:-.3px;margin:0 0 4px}.step-description{color:#64748b;font-size:14px;line-height:1.4;margin:0 0 20px}.form-group{margin-bottom:18px}.form-group label{color:#374151;display:block;margin-bottom:8px}.form-control{background:#fff;border:1.5px solid #e2e8f0;border-radius:10px;box-sizing:border-box;color:#1e293b;font-family:inherit;font-size:14px;padding:10px 14px;transition:border-color .2s ease,box-shadow .2s ease;width:100%}.form-control:focus{border-color:#3b82f6;box-shadow:0 0 0 3px #3b82f61a;outline:none}.form-control::placeholder{color:#94a3b8}textarea.form-control{line-height:1.6;resize:vertical}select.form-control{cursor:pointer}.form-control.input-error{border-color:#ef4444;box-shadow:0 0 0 3px #ef444414}.form-control.input-success{border-color:#10b981;box-shadow:0 0 0 3px #10b98114}.form-row{grid-gap:18px;display:grid;gap:18px;grid-template-columns:1fr 1fr}.required{color:#ef4444}.empty-units{background:#fff;border:2px dashed #e2e8f0;border-radius:10px;margin-bottom:20px;padding:40px 32px;text-align:center}.empty-units svg{margin-bottom:12px;opacity:.4}.empty-units p{color:#64748b;font-size:14px;margin:0}.unit-cards-list{display:flex;flex-direction:column;gap:14px;margin-bottom:20px}.unit-card-wizard{background:#fff;border:1.5px solid #e2e8f0;border-radius:12px;box-sizing:border-box;overflow:hidden;transition:border-color .2s,box-shadow .2s}.unit-card-wizard:hover{border-color:#bfdbfe;box-shadow:0 2px 8px #3b82f60f}.unit-card-top{align-items:center;background:#eff6ff;border-bottom:1px solid #dbeafe;display:flex;gap:10px;padding:14px 20px}.unit-badge{background:#1e3a8a;border-radius:20px;color:#fff;font-size:12px;font-weight:700;letter-spacing:.3px;padding:4px 14px;text-transform:uppercase}.unit-check{color:#16a34a;font-size:14px;font-weight:700}.btn-remove-unit{background:#fef2f2;border:none;border-radius:6px;color:#dc2626;cursor:pointer;font-size:12px;font-weight:600;margin-left:auto;padding:4px 12px;transition:background .2s}.btn-remove-unit:hover{background:#fecaca}.unit-card-body{box-sizing:border-box;padding:14px 20px}.unit-card-body .form-group{margin-bottom:14px}.unit-card-body .form-group:last-child{margin-bottom:0}.unit-card-body .form-group input,.unit-card-body .form-group textarea{box-sizing:border-box!important;width:100%!important}.unit-title-input{border:1.5px solid #e2e8f0!important;border-radius:8px!important;font-size:15px!important;font-weight:500;padding:12px 16px!important}.unit-title-input:focus{border-color:#3b82f6!important}.unit-desc-input{border:1.5px solid #e2e8f0!important;border-radius:8px!important;font-size:14px!important;line-height:1.6;min-height:80px;padding:12px 16px!important}.unit-desc-input:focus{border-color:#3b82f6!important}.btn-add-unit{background:#eff6ff;border:2px dashed #bfdbfe;border-radius:14px;color:#1e3a8a;cursor:pointer;display:block;font-size:15px;font-weight:700;margin-bottom:24px;padding:14px;transition:all .2s;width:100%}.btn-add-unit:hover{background:#dbeafe;border-color:#3b82f6}.units-status{background:#f8fafc;border:1px solid #e2e8f0;border-radius:8px;padding:10px 16px;text-align:center}.status-ok{color:#16a34a}.status-ok,.status-warn{font-size:13px;font-weight:600}.status-warn{color:#d97706}.week-unit-map-list{display:flex;flex-direction:column;gap:12px}.week-map-card{background:#fff;border:1.5px solid #e2e8f0;border-radius:12px;overflow:hidden;transition:border-color .2s}.week-map-card:hover{border-color:#a5b4fc}.week-map-header{align-items:center;background:#f5f3ff;border-bottom:1px solid #ede9fe;display:flex;gap:12px;padding:14px 20px}.week-map-badge{background:#6366f1;border-radius:20px;color:#fff;font-size:12px;font-weight:700;letter-spacing:.3px;padding:4px 14px;white-space:nowrap}.week-title-inline{background:#fff!important;border:1px solid #e2e8f0!important;border-radius:8px!important;flex:1 1;font-size:15px!important;font-weight:500;padding:10px 14px!important}.week-map-body{padding:16px 20px}.map-label{color:#64748b;display:block;font-size:11px;font-weight:700;letter-spacing:.5px;margin-bottom:10px;text-transform:uppercase}.unit-chip-list{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}.unit-chip{align-items:center;background:#f8fafc;border:1.5px solid #e2e8f0;border-radius:20px;color:#64748b;cursor:pointer;display:inline-flex;font-size:13px;font-weight:500;gap:5px;padding:6px 14px;transition:all .2s;white-space:nowrap}.unit-chip:hover{background:#eff6ff;border-color:#bfdbfe;color:#1e3a8a}.unit-chip.selected{background:#1e3a8a;border-color:#1e3a8a;color:#fff}.chip-num{background:#0000000f;border-radius:8px;font-size:10px;font-weight:700;padding:1px 5px}.unit-chip.selected .chip-num{background:#fff3}.chip-check{font-size:11px;font-weight:700}.no-units-msg{color:#94a3b8;font-size:14px;font-style:italic;margin:0 0 14px}.week-desc-input{border:1px solid #e2e8f0!important;border-radius:8px!important;font-size:14px!important;margin-top:8px;min-height:50px;padding:10px 14px!important}.week-selector{background:#fff;border:1px solid #e2e8f0;border-radius:10px;display:flex;flex-wrap:wrap;gap:6px;margin-bottom:24px;padding:4px}.week-btn{background:#0000;border:1.5px solid #0000;border-radius:7px;color:#64748b;cursor:pointer;font-size:12px;font-weight:600;padding:6px 13px;transition:all .2s}.week-btn:hover{background:#f8fafc;color:#1e3a8a}.week-btn.active{background:#1e3a8a;color:#fff}.week-btn.has-content{color:#16a34a}.week-btn.has-content.active{background:#1e3a8a;color:#fff}.week-dot{color:#16a34a;display:inline-block;font-size:8px;margin-left:3px;vertical-align:middle}.week-btn.active .week-dot{color:#a5f3fc}.week-editing-label{color:#64748b;font-size:14px;margin:0 0 24px}.week-editing-label strong{color:#1e293b}.content-section{background:#fff;border:1px solid #e2e8f0;border-radius:10px;margin-bottom:18px;padding:18px 22px}.content-section h5{align-items:center;color:#1e293b;display:flex;font-size:14px;font-weight:700;gap:6px;margin:0 0 10px}.material-input{grid-gap:10px;align-items:start;background:#f8fafc;border:1px solid #e2e8f0;border-radius:8px;display:grid;gap:10px;grid-template-columns:110px 1fr;margin-bottom:6px;overflow:hidden;padding:14px;position:relative}.material-input .form-control{border-radius:7px;font-size:13px;padding:8px 12px}.material-input textarea.form-control{grid-column:1/-1}.material-input input[type=file].form-control{background:#fff;font-size:13px;grid-column:1/-1;padding:6px 10px}.material-input.existing-item{background:#f0fdf4;border-color:#bbf7d0}.saved-badge{background:#f0fdf4;border:1px solid #bbf7d0;border-radius:10px;color:#16a34a;display:inline-block;font-size:10px;font-weight:600;margin-left:6px;padding:2px 8px;vertical-align:middle}.btn-remove{background:#fef2f2;border:1px solid #fecaca;border-radius:6px;color:#dc2626;cursor:pointer;font-size:12px;font-weight:600;grid-column:1/-1;justify-self:end;padding:5px 12px;transition:background .2s}.btn-remove:hover{background:#fecaca}.btn-primary,.btn-secondary{align-items:center;border-radius:8px;display:inline-flex;font-size:15px;gap:6px;padding:12px 28px;transition:all .2s ease}.btn-primary{background:linear-gradient(135deg,#1e3a8a,#0f766e)}.btn-primary:hover{box-shadow:0 4px 14px #1e3a8a40}.btn-secondary{border:1.5px solid #e2e8f0;color:#64748b}.btn-secondary:hover{background:#f8fafc;border-color:#cbd5e1}.btn-sm{font-size:14px;padding:8px 16px}.wizard-navigation{align-items:center;background:#fff;border-top:1px solid #e2e8f0;display:flex;flex-shrink:0;justify-content:space-between;padding:14px 48px}.progress-info{color:#94a3b8;font-size:13px;font-weight:600}.nav-buttons-right{align-items:center;display:flex;gap:10px}@keyframes cwFadeIn{0%{opacity:0}to{opacity:1}}@media (max-width:768px){.wizard-step{padding:24px 20px 40px}.wizard-stepper{padding:14px 20px}.step{padding:0 10px}.step-label{display:none}.form-row,.material-input{grid-template-columns:1fr}.wizard-navigation{flex-wrap:wrap;gap:10px;padding:12px 20px}.week-selector{flex-wrap:nowrap;overflow-x:auto}}.mcq-editor{margin-top:16px}.mcq-editor-header{align-items:center;display:flex;justify-content:space-between;margin-bottom:14px}.mcq-editor-title{color:#1e293b;font-size:14px;font-weight:700;margin:0}.mcq-empty{background:#f8fafc;border:1px dashed #cbd5e1;border-radius:10px;color:#94a3b8;font-size:13px;padding:24px;text-align:center}.mcq-question-card{background:#f8fafc;border:1px solid #e2e8f0;border-radius:10px;margin-bottom:8px;padding:14px}.mcq-question-header{align-items:center;display:flex;justify-content:space-between;margin-bottom:12px}.mcq-question-num{color:#1e293b;font-size:13px;font-weight:700}.mcq-options-grid{grid-gap:10px;display:grid;gap:10px;grid-template-columns:1fr 1fr;margin-bottom:14px}.mcq-option-item{display:flex;flex-direction:column;gap:4px}.mcq-option-label{align-items:center;color:#64748b;display:flex;font-size:12px;font-weight:600;gap:4px}.mcq-option-label.correct{color:#16a34a}.mcq-correct-tag{color:#16a34a;font-size:11px}.mcq-footer-row{align-items:flex-end;display:flex;gap:16px}.code-hint{display:block;font-size:12px;margin-top:4px}.code-hint-checking{color:#f59e0b}.code-hint-error{color:#ef4444;font-weight:500}.code-hint-ok{color:#10b981}.code-toggle-btn{background:none;border:none;color:#3b82f6;cursor:pointer;display:block;font-size:12px;margin-top:4px;padding:4px 0;text-decoration:underline}.code-toggle-btn:hover{color:#1e3a8a}.existing-codes-panel{background:#f8fafc;border:1px solid #e2e8f0;border-radius:8px;font-size:13px;margin-top:8px;max-height:120px;overflow-y:auto;padding:10px 14px}.existing-codes-title{color:#475569;font-size:12px;font-weight:600;margin-bottom:6px}.existing-codes-list{display:flex;flex-wrap:wrap;gap:6px}.existing-code-tag{background:#e2e8f0;border-radius:10px;color:#334155;font-family:monospace;font-size:12px;padding:2px 10px}.existing-file-info{color:#16a34a}.existing-file-info,.selected-file-info{font-size:12px;grid-column:1/-1;margin:4px 0;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.selected-file-info{color:#3b82f6}.faculty-layout{background:#f3f4f6;color:#0f172a}.faculty-sidebar{background:#fff;border-right:1px solid #e5e7eb;box-shadow:4px 0 24px #0206170d;padding:20px 14px;transition:transform .2s ease;width:260px}.faculty-sidebar-header{align-items:center;display:flex;gap:10px;margin-bottom:22px;padding:8px 10px}.faculty-brand{color:#111827;font-size:18px;font-weight:700}.faculty-sidebar-nav{display:flex;flex-direction:column;gap:6px}.faculty-nav-item{align-items:center;background:#0000;border:none;border-radius:10px;color:#334155;cursor:pointer;display:flex;font-weight:600;gap:10px;padding:10px 12px;text-align:left;transition:all .2s ease;width:100%}.faculty-nav-item:hover{background:#eef2ff;color:#3730a3}.faculty-nav-item.active{background:#e0e7ff;color:#312e81}.faculty-shell{display:flex;flex:1 1;flex-direction:column;min-width:0}.faculty-topbar{align-items:center;background:#fff;border-bottom:1px solid #e5e7eb;display:flex;height:64px;justify-content:space-between;padding:0 20px}.faculty-topbar-left{align-items:center;display:flex;gap:10px}.faculty-menu-btn{background:#fff;border:1px solid #d1d5db;border-radius:9px;color:#334155;cursor:pointer;display:none;height:34px;width:34px}.faculty-topbar-title{color:#0f172a;font-size:18px;font-weight:700}.faculty-topbar-right{align-items:center;color:#475569;display:flex;font-size:14px;gap:12px}.faculty-topbar-logout{align-items:center;background:#fff;border:1px solid #d1d5db;border-radius:9px;color:#1f2937;cursor:pointer;display:inline-flex;font-weight:600;gap:6px;padding:7px 10px}.faculty-content,body .faculty-content>div:first-child{padding:0}.faculty-page-header{align-items:center;display:flex;gap:10px;justify-content:space-between;margin-bottom:16px}.faculty-page-title{color:#111827;font-size:24px;font-weight:800;margin:0}.faculty-page-subtitle{color:#64748b;font-size:14px;margin:4px 0 0}.ui-card{background:#fff;border:none;border-radius:0;box-shadow:none;display:flex;flex:1 1;flex-direction:column;height:100%;max-width:100%;min-height:calc(100vh - 64px);transition:all .2s ease;width:100%}.ui-card:hover{box-shadow:0 8px 24px #02061714}.ui-card .edit-course-shell{flex:1 1}.ui-card-body{display:flex;flex:1 1;flex-direction:column;padding:0}.ui-btn{border:none;border-radius:10px;cursor:pointer;font-weight:700;padding:10px 14px;transition:all .2s ease}.ui-btn.primary{background:#4f46e5;color:#fff}.ui-btn.secondary{background:#e2e8f0;color:#1e293b}.ui-btn.danger{background:#dc2626;color:#fff}.ui-btn:disabled{cursor:not-allowed;opacity:.6}.ui-table-wrap{overflow-x:auto}.ui-table-toolbar{margin-bottom:10px}.ui-table-search{border:1px solid #d1d5db;border-radius:10px;max-width:100%;padding:9px 10px;width:280px}.ui-table{border-collapse:collapse;width:100%}.ui-table th{background:#f8fafc;border-bottom:1px solid #e2e8f0;color:#334155;font-size:13px;font-weight:700;padding:10px;text-align:left}.ui-table td{border-top:1px solid #eef2f7;color:#1f2937;font-size:14px;padding:10px}.ui-table tr:hover{background:#f8fafc}.ui-table-pagination{align-items:center;display:flex;gap:8px;justify-content:flex-end;margin-top:10px}.ui-table-page-label{color:#475569;font-size:13px}.ui-loader{color:#475569;padding:24px;text-align:center}.ui-empty{color:#64748b;padding:22px;text-align:center}.ui-toast{border-radius:10px;font-weight:600;margin-bottom:12px;padding:10px 12px}.ui-toast.success{background:#dcfce7;color:#166534}.ui-toast.error{background:#fee2e2;color:#991b1b}@media (max-width:900px){.faculty-sidebar{bottom:0;left:0;position:fixed;top:0;transform:translateX(-100%);width:240px;z-index:30}.faculty-sidebar.open{transform:translateX(0)}.faculty-brand,.faculty-nav-label{display:inline}.faculty-menu-btn{align-items:center;display:inline-flex;justify-content:center}.faculty-content{padding:14px}.faculty-sidebar-overlay{background:#0f172a66;border:none;inset:0;position:fixed;z-index:20}}.student-analytics-container{background:#fff;border-radius:12px;box-shadow:0 1px 3px #0000001a;overflow:hidden}.analytics-header{align-items:center;background:linear-gradient(135deg,#667eea,#764ba2);border-bottom:1px solid #ffffff1a;color:#fff;display:flex;justify-content:space-between;padding:20px 30px}.student-info{align-items:center;display:flex;gap:15px}.student-avatar{background:#ffffff4d;font-size:24px;font-weight:700;height:50px;width:50px}.student-info h2{font-size:20px;margin:0}.student-info p{font-size:13px;margin:4px 0 0;opacity:.9}.course-info{text-align:right}.course-name{font-size:14px;opacity:.9}.analytics-tabs{border-bottom:2px solid #e5e7eb;display:flex;padding:0 30px}.tab{font-weight:600;max-width:150px}.tab.active,.tab:hover{color:#667eea}.tab.active:after{background:#667eea}.analytics-content{min-height:500px;padding:30px}.section-content{animation:fadeIn .3s ease}.stats-grid{grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}.stat-card{background:#f9fafb;border:1px solid #e5e7eb}.stat-card:hover{border-color:#667eea;box-shadow:0 4px 12px #667eea1a}.stat-header{margin-bottom:15px}.stat-header h3{color:#1f2937;font-size:14px;font-weight:600;margin:0;text-transform:uppercase}.progress-circle{align-items:center;display:flex;height:150px;justify-content:center;margin:0 auto;position:relative;width:150px}.progress-circle svg{height:100%;transform:rotate(-90deg);width:100%}.progress-bg{fill:none;stroke:#e5e7eb;stroke-width:3}.progress-ring{fill:none;stroke:url(#gradient);stroke-width:3;stroke-linecap:round;transition:stroke-dasharray .6s ease}.progress-text{align-items:center;display:flex;flex-direction:column;gap:4px;position:absolute}.percentage{color:#667eea;font-size:28px;font-weight:700}.label{color:#6b7280;font-size:12px}.stat-value-large{color:#667eea;font-size:36px;font-weight:700;margin:10px 0;text-align:center}.stat-label{text-align:center}.stat-breakdown{display:flex;justify-content:space-around;margin-top:15px}.breakdown-item{align-items:center;display:flex;flex-direction:column;gap:6px}.status{font-size:20px;font-weight:700}.status.submitted{color:#3b82f6}.status.evaluated,.status.passed{color:#16a34a}.status.failed{color:#dc2626}.last-active{color:#6b7280;font-size:16px;margin-top:10px;text-align:center}.time-spent{color:#667eea;font-size:24px;font-weight:700;text-align:center}.chart-card{background:#f9fafb;border:1px solid #e5e7eb;border-radius:12px;margin-top:30px;padding:20px}.chart-card h3{color:#1f2937;font-size:16px;margin:0 0 20px}.chart-container{align-items:flex-end;background:#fff;border-radius:8px;display:flex;gap:10px;height:250px;justify-content:space-around;padding:20px 10px}.bar-container,.chart-bar{align-items:center;display:flex;flex:1 1;flex-direction:column;gap:8px}.bar-container{justify-content:flex-end}.bar{border-radius:4px 4px 0 0;min-height:5px;transition:all .3s ease;width:30px}.bar:hover{box-shadow:0 2px 8px #00000026;filter:brightness(.9)}.bar-label{color:#6b7280}.bar-label,.bar-value{font-size:12px;font-weight:600}.bar-value{color:#1f2937}.weeks-list{display:flex;flex-direction:column;gap:12px}.week-item{background:#fff;border:1px solid #e5e7eb;border-radius:8px;gap:12px;padding:15px}.week-item.week-completed{background:#f0fdf4;border-color:#dcfce7}.week-item.week-current{background:#f0f4ff;border-color:#e0e7ff}.week-item.week-locked{background:#fffbfb;border-color:#fecaca;opacity:.7}.week-indicator{background:#fff;border-radius:50%;font-size:20px;height:40px;width:40px}.week-item.week-completed .week-indicator{background:#dcfce7;color:#16a34a}.week-item.week-current .week-indicator{background:#e0e7ff;color:#667eea}.week-details{flex:1 1}.week-details h4{color:#1f2937;font-size:14px;font-weight:600;margin:0 0 4px}.week-details p{color:#6b7280;font-size:13px;margin:0 0 4px}.week-details small{color:#9ca3af;font-size:12px}.status-badge{white-space:nowrap}.status-badge.status-completed{background:#dcfce7;color:#16a34a}.status-badge.status-current{background:#e0e7ff;color:#667eea}.status-badge.status-locked{background:#fecaca;color:#dc2626}.submissions-list{display:flex;flex-direction:column;gap:15px}.submission-item{background:#f9fafb;border:1px solid #e5e7eb;border-left-width:4px;border-radius:8px;padding:15px}.submission-item.status-evaluated{background:#f0fdf4;border-color:#dcfce7 #dcfce7 #dcfce7 #16a34a}.submission-item.status-submitted{background:#dbeafe;border-color:#bfdbfe #bfdbfe #bfdbfe #3b82f6}.submission-header{align-items:flex-start;display:flex;justify-content:space-between;margin-bottom:12px}.submission-header h4{color:#1f2937;font-size:14px;font-weight:600;margin:0}.submission-details{margin-bottom:12px}.detail{border-bottom:1px solid #0000000d;display:flex;font-size:13px;justify-content:space-between;padding:8px 0}.detail .label{color:#6b7280;font-weight:600}.detail .value{color:#1f2937}.feedback{background:#fff;border-radius:6px;margin-top:12px;padding:12px}.feedback strong{color:#374151;display:block;margin-bottom:6px}.feedback p{color:#6b7280;font-size:13px;line-height:1.6;margin:0}.tests-list{display:flex;flex-direction:column;gap:15px}.test-item{background:#f9fafb;border:1px solid #e5e7eb;border-left-width:4px;border-radius:8px;padding:15px}.test-item.test-passed{background:#f0fdf4;border-color:#dcfce7 #dcfce7 #dcfce7 #16a34a}.test-item.test-failed{background:#fffbfb;border-color:#fecaca #fecaca #fecaca #dc2626}.test-header{align-items:flex-start;margin-bottom:12px}.test-header h4{color:#1f2937;font-size:14px;font-weight:600;margin:0}.result-badge{border-radius:4px;font-size:12px;font-weight:700;padding:6px 12px;white-space:nowrap}.result-badge.result-passed{background:#dcfce7;color:#16a34a}.result-badge.result-failed{background:#fee2e2;color:#dc2626}.test-stats{grid-gap:10px;display:grid;gap:10px;grid-template-columns:repeat(4,1fr)}.test-stats .stat{align-items:center;background:#fff;border-radius:6px;display:flex;flex-direction:column;gap:4px;padding:8px}.test-stats .label{color:#6b7280;font-size:12px;font-weight:600}.test-stats .value{color:#1f2937;font-size:16px;font-weight:700}.empty-message{background:#f9fafb;border-radius:8px;color:#6b7280;padding:40px;text-align:center}.btn-download-small{background:#667eea;border:none;border-radius:4px;color:#fff;cursor:pointer;display:inline-block;font-size:12px;font-weight:600;margin-top:8px;padding:6px 12px;text-decoration:none;transition:all .3s ease}.btn-download-small:hover{background:#5568d3}.analytics-error,.analytics-loader{color:#6b7280;padding:40px;text-align:center}@media (max-width:768px){.analytics-header{flex-direction:column;gap:15px}.course-info{text-align:left}.analytics-tab{overflow-x:auto}.tab{max-width:none;white-space:nowrap}.stats-grid{grid-template-columns:1fr}.chart-container{overflow-x:auto}.test-stats{grid-template-columns:repeat(2,1fr)}}.faculty-profile-container{margin:0 auto;max-width:900px;padding:2rem}.profile-header{margin-bottom:2rem}.profile-header h2{color:#1e3a8a;font-size:2rem;font-weight:700;margin-bottom:.5rem}.profile-header p{color:#64748b;font-size:1rem}.profile-content{grid-gap:3rem;background:#fff;border:1px solid #e2e8f0;border-radius:12px;box-shadow:0 4px 16px #1e3a8a14;display:grid;gap:3rem;grid-template-columns:1fr 2fr;padding:2rem}.profile-picture-section{align-items:center;display:flex;flex-direction:column;gap:1.5rem}.profile-picture-container{align-items:center;background:#f5f5f5;border:4px solid #e0e0e0;border-radius:50%;box-shadow:0 4px 12px #0000001a;display:flex;height:200px;justify-content:center;overflow:hidden;width:200px}.profile-picture{height:100%;object-fit:cover;width:100%}.profile-picture-placeholder{align-items:center;background:linear-gradient(135deg,#1e3a8a,#10b981);display:flex;font-size:4rem;height:100%;justify-content:center;width:100%}.picture-upload-controls{display:flex;flex-direction:column;gap:.75rem;width:100%}.save-image-button,.upload-button{border:none;border-radius:6px;cursor:pointer;font-size:.95rem;font-weight:600;padding:.75rem 1.5rem;transition:all .3s ease}.upload-button{background:#1e3a8a;border:2px solid #1e3a8a;color:#fff}.upload-button:hover{background:#1e40af;box-shadow:0 4px 12px #1e3a8a4d;transform:translateY(-2px)}.save-image-button{background:#10b981;border:2px solid #10b981;color:#fff}.save-image-button:hover:not(:disabled){background:#059669;box-shadow:0 4px 12px #10b9814d;transform:translateY(-2px)}.save-image-button:disabled{cursor:not-allowed;opacity:.6}.upload-hint{color:#999;font-size:.85rem;margin-top:.5rem;text-align:center}.profile-info-section{display:flex;flex-direction:column;gap:1.5rem}.profile-info-grid{grid-gap:1.5rem;display:grid;gap:1.5rem;grid-template-columns:1fr 1fr}.info-item{gap:.5rem}.info-item label{color:#667eea;font-size:.85rem;font-weight:600;letter-spacing:.5px;text-transform:uppercase}.info-item p{background:#f8f9fa;border-left:4px solid #667eea;border-radius:6px;color:#333;font-size:1rem;font-weight:500;padding:.75rem}.edit-profile-button{align-self:flex-start;background:#1e3a8a;border:none;border-radius:6px;color:#fff;cursor:pointer;font-size:.95rem;font-weight:600;margin-top:1rem;padding:.75rem 1.5rem;transition:all .3s ease}.edit-profile-button:hover{background:#1e40af;box-shadow:0 4px 12px #1e3a8a4d;transform:translateY(-2px)}.profile-edit-form{grid-gap:1.5rem;display:grid;gap:1.5rem;grid-template-columns:1fr 1fr}.form-group{gap:.5rem}.form-group label{color:#667eea;font-size:.85rem;letter-spacing:.5px;text-transform:uppercase}.form-group input{border:2px solid #e0e0e0;border-radius:6px;font-family:inherit;font-size:1rem;padding:.75rem;transition:border-color .3s ease}.form-group input:focus{border-color:#667eea;box-shadow:0 0 0 3px #667eea1a;outline:none}.form-actions{display:flex;gap:1rem;grid-column:1/-1;margin-top:1rem}.cancel-button,.save-button{border:none;border-radius:6px;cursor:pointer;flex:1 1;font-size:.95rem;font-weight:600;padding:.75rem 1.5rem;transition:all .3s ease}.save-button{background:#10b981;color:#fff}.save-button:hover:not(:disabled){background:#059669;box-shadow:0 4px 12px #10b9814d;transform:translateY(-2px)}.save-button:disabled{cursor:not-allowed;opacity:.6}.cancel-button{background:#ef4444;color:#fff}.cancel-button:hover:not(:disabled){background:#dc2626;box-shadow:0 4px 12px #ef44444d;transform:translateY(-2px)}.cancel-button:disabled{cursor:not-allowed;opacity:.6}@media (max-width:768px){.profile-content{gap:2rem;grid-template-columns:1fr}.profile-picture-container{height:150px;width:150px}.profile-edit-form,.profile-info-grid{grid-template-columns:1fr}.form-actions{flex-direction:column}.cancel-button,.save-button{width:100%}}@media (max-width:480px){.faculty-profile-container{padding:1rem}.profile-header h2{font-size:1.5rem}.profile-content{gap:1.5rem;padding:1rem}.profile-picture-container{height:120px;width:120px}.profile-picture-placeholder{font-size:2.5rem}}.password-section{margin-top:2rem}.password-alert{align-items:flex-start;background:linear-gradient(135deg,#fef3c7,#fde68a);border:1px solid #f59e0b;border-radius:12px;display:flex;gap:12px;margin-bottom:1.5rem;padding:16px 20px}.password-alert .alert-icon{flex-shrink:0;font-size:1.5rem;margin-top:2px}.password-alert strong{color:#92400e;display:block;font-size:.95rem;margin-bottom:4px}.password-alert p{color:#a16207;font-size:.85rem;line-height:1.4;margin:0}.change-password-toggle{align-items:center;background:linear-gradient(135deg,#1e3a8a,#1e40af);border:none;border-radius:10px;color:#fff;cursor:pointer;display:inline-flex;font-size:.95rem;font-weight:600;gap:8px;padding:12px 24px;transition:all .2s ease}.change-password-toggle:hover{box-shadow:0 4px 12px #1e3a8a4d;transform:translateY(-1px)}.password-form-card{background:#fff;border:1px solid #e2e8f0;border-radius:12px;box-shadow:0 4px 16px #1e3a8a14;overflow:hidden}.password-form-header{align-items:center;background:linear-gradient(135deg,#eff6ff,#dbeafe);border-bottom:1px solid #bfdbfe;display:flex;justify-content:space-between;padding:16px 24px}.password-form-header h3{color:#1e3a8a;font-size:1.1rem;font-weight:700;margin:0}.password-close-btn{background:none;border:none;border-radius:6px;color:#64748b;cursor:pointer;font-size:1.2rem;padding:4px 8px;transition:all .2s}.password-close-btn:hover{background:#f1f5f9;color:#1e293b}.password-form-body{padding:24px}.password-form-body .form-group{margin-bottom:1rem}.password-form-body .form-group label{color:#374151;display:block;font-size:.875rem;font-weight:600;margin-bottom:6px}.password-form-body .form-group input{border:2px solid #e5e7eb;border-radius:10px;box-sizing:border-box;font-size:.95rem;padding:12px 14px;transition:border-color .2s;width:100%}.password-form-body .form-group input:focus{border-color:#3b82f6;box-shadow:0 0 0 3px #3b82f61a;outline:none}.password-match-indicator{border-radius:8px;font-size:.85rem;font-weight:600;margin-bottom:1rem;padding:8px 14px}.password-match-indicator.match{background:#dcfce7;border:1px solid #86efac;color:#166534}.password-match-indicator.no-match{background:#fee2e2;border:1px solid #fca5a5;color:#dc2626}.send-notification-modal{align-items:center;animation:fadeIn .3s ease;background:#0009;bottom:0;display:flex;justify-content:center;left:0;position:fixed;right:0;top:0;z-index:1050}.send-notification-modal .modal-content{animation:slideUp .3s ease;background:#fff;border-radius:12px;box-shadow:0 10px 40px #00000026;max-height:90vh;max-width:500px;overflow-y:auto;width:90%}.send-notification-modal .modal-header{align-items:center;background:linear-gradient(135deg,#667eea,#764ba2);border-bottom:1px solid #f0f0f0;color:#fff;display:flex;justify-content:space-between;padding:1.5rem}.send-notification-modal .modal-header h2{font-size:1.5rem;font-weight:600;margin:0}.send-notification-modal .close-btn{align-items:center;background:none;border:none;border-radius:50%;color:#fff;cursor:pointer;display:flex;font-size:1.5rem;height:32px;justify-content:center;padding:0;transition:background .3s ease;width:32px}.send-notification-modal .close-btn:hover{background:#fff3}.send-notification-modal .notification-form{padding:1.5rem}.send-notification-modal .form-group{margin-bottom:1.5rem}.send-notification-modal .form-group label{color:#333;display:block;font-size:.95rem;font-weight:600;margin-bottom:.5rem}.send-notification-modal .required{color:#e74c3c}.send-notification-modal .input-field,.send-notification-modal .select-field,.send-notification-modal .textarea-field{border:1px solid #e0e0e0;border-radius:8px;font-family:inherit;font-size:.95rem;padding:.75rem;transition:border-color .3s ease,box-shadow .3s ease;width:100%}.send-notification-modal .input-field:focus,.send-notification-modal .select-field:focus,.send-notification-modal .textarea-field:focus{border-color:#667eea;box-shadow:0 0 0 3px #667eea1a;outline:none}.send-notification-modal .textarea-field{min-height:120px;resize:vertical}.send-notification-modal .students-preview{background:#f8f9fa;border-left:3px solid #667eea;border-radius:8px;margin-top:1rem;padding:1rem}.send-notification-modal .preview-label{color:#333;font-size:.9rem;font-weight:600;margin:0 0 .75rem}.send-notification-modal .students-list{display:flex;flex-wrap:wrap;gap:.5rem}.send-notification-modal .student-tag{background:#fff;border:1px solid #ddd;border-radius:20px;color:#666;font-size:.85rem;overflow:hidden;padding:.4rem .8rem;text-overflow:ellipsis;white-space:nowrap}.send-notification-modal .student-tag.more{background:#667eea;border-color:#667eea;color:#fff;font-weight:600}.send-notification-modal .info-box{background:#e3f2fd;border-left:3px solid #2196f3;border-radius:8px;color:#1976d2;font-size:.95rem;margin-bottom:1.5rem;padding:1rem}.send-notification-modal .success-message{background:#d4edda;border-left:3px solid #28a745;border-radius:8px;color:#155724;font-weight:500;margin-bottom:1rem;padding:1rem}.send-notification-modal .error-message{background:#f8d7da;border-left:3px solid #f5534d;border-radius:8px;color:#721c24;font-weight:500;margin-bottom:1rem;padding:1rem}.send-notification-modal .button-group{display:flex;gap:1rem;justify-content:flex-end;margin-top:2rem}.send-notification-modal .btn-cancel,.send-notification-modal .btn-send{border:none;border-radius:8px;cursor:pointer;font-size:.95rem;font-weight:600;padding:.75rem 1.5rem;transition:all .3s ease}.send-notification-modal .btn-send{background:linear-gradient(135deg,#667eea,#764ba2);box-shadow:0 4px 12px #667eea4d;color:#fff}.send-notification-modal .btn-send:hover:not(:disabled){box-shadow:0 6px 16px #667eea66;transform:translateY(-2px)}.send-notification-modal .btn-send:disabled{cursor:not-allowed;opacity:.6}.send-notification-modal .btn-cancel{background:#f5f5f5;border:1px solid #ddd;color:#333}.send-notification-modal .btn-cancel:hover{background:#eee}@media (max-width:600px){.send-notification-modal .modal-content{margin:1rem;max-width:100%}.send-notification-modal .button-group{flex-direction:column-reverse}.send-notification-modal .btn-cancel,.send-notification-modal .btn-send{width:100%}}.notifications-inbox{background:#fff;border-radius:12px;box-shadow:0 4px 12px #00000014;overflow:hidden}.notifications-inbox .inbox-header{align-items:center;background:linear-gradient(135deg,#667eea,#764ba2);border-bottom:1px solid #f0f0f0;color:#fff;display:flex;justify-content:space-between;padding:1.5rem}.notifications-inbox .inbox-header h2{font-size:1.5rem;font-weight:600;margin:0}.notifications-inbox .header-controls{align-items:center;display:flex;gap:1rem}.notifications-inbox .filter-select{background:#ffffff1a;border:1px solid #ffffff4d;border-radius:8px;color:#fff;cursor:pointer;font-weight:500;padding:.6rem 1rem;transition:all .3s ease}.notifications-inbox .filter-select:focus,.notifications-inbox .filter-select:hover{background:#fff3;border-color:#fff;outline:none}.notifications-inbox .filter-select option{background:#fff;color:#333}.notifications-inbox .btn-mark-all{background:#fff3;border:1px solid #ffffff4d;border-radius:8px;color:#fff;cursor:pointer;font-size:.9rem;font-weight:500;padding:.6rem 1rem;transition:all .3s ease}.notifications-inbox .btn-mark-all:hover{background:#ffffff4d;border-color:#fff}.notifications-inbox .error-box{background:#f8d7da;border-left:3px solid #f5534d;border-radius:8px;color:#721c24;margin:1rem;padding:1rem}.notifications-inbox .empty-state{color:#999;padding:3rem 1.5rem;text-align:center}.notifications-inbox .empty-icon{font-size:3rem;margin-bottom:1rem}.notifications-inbox .empty-state h3{color:#666;font-size:1.1rem;margin:1rem 0 .5rem}.notifications-inbox .empty-state p{font-size:.95rem;margin:0}.notifications-inbox .notifications-list{padding:1rem}.notifications-inbox .notification-card{background:#fafafa;border:1px solid #f0f0f0;border-radius:8px;display:flex;gap:1rem;margin-bottom:.75rem;padding:1rem;transition:all .3s ease}.notifications-inbox .notification-card:hover{background:#f5f5f5;border-color:#e0e0e0;box-shadow:0 2px 8px #00000014}.notifications-inbox .notification-card.unread{background:#f0f4ff;border-color:#d4e1f6;border-left:3px solid #667eea}.notifications-inbox .notification-card.read{opacity:.8}.notifications-inbox .notification-icon{font-size:1.75rem;line-height:1.75rem;min-width:40px;text-align:center}.notifications-inbox .notification-content{flex:1 1}.notifications-inbox .notification-header{align-items:flex-start;display:flex;gap:1rem;justify-content:space-between;margin-bottom:.5rem}.notifications-inbox .notification-header h4{color:#333;flex:1 1;font-size:1rem;font-weight:600;margin:0}.notifications-inbox .timestamp{color:#999;font-size:.85rem;white-space:nowrap}.notifications-inbox .notification-message{color:#666;font-size:.95rem;line-height:1.4;margin:.5rem 0 .75rem}.notifications-inbox .notification-footer{align-items:center;display:flex;flex-wrap:wrap;gap:1rem;justify-content:space-between}.notifications-inbox .badge-role{background:#fff;border:1px solid #ddd;border-radius:20px;color:#666;display:inline-block;font-size:.8rem;font-weight:500;padding:.35rem .75rem}.notifications-inbox .btn-read{background:#667eea;border:none;border-radius:6px;color:#fff;cursor:pointer;font-size:.8rem;font-weight:500;padding:.35rem .75rem;transition:all .3s ease}.notifications-inbox .btn-read:hover{background:#5568d3;transform:translateY(-1px)}.notifications-inbox .unread-indicator{align-items:center;display:flex;justify-content:center;min-width:20px}.notifications-inbox .unread-dot{animation:pulse 2s infinite;background:#667eea;border-radius:50%;height:10px;width:10px}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.notifications-inbox .loading-skeleton{padding:1rem}.notifications-inbox .skeleton-item{animation:loading 1.5s infinite;background:linear-gradient(90deg,#f0f0f0,#f5f5f5 50%,#f0f0f0);background-size:200% 100%;border-radius:8px;height:80px;margin-bottom:1rem}.notifications-inbox .pagination{align-items:center;background:#fafafa;border-top:1px solid #f0f0f0;display:flex;gap:1rem;justify-content:center;padding:1.5rem}.notifications-inbox .page-info{color:#666;font-size:.9rem;font-weight:500;min-width:100px;text-align:center}.notifications-inbox .btn-paginate{background:#fff;border:1px solid #ddd;border-radius:6px;color:#333;cursor:pointer;font-size:.9rem;font-weight:500;padding:.6rem 1rem;transition:all .3s ease}.notifications-inbox .btn-paginate:hover:not(:disabled){background:#f5f5f5;border-color:#667eea;color:#667eea}.notifications-inbox .btn-paginate:disabled{cursor:not-allowed;opacity:.5}@media (max-width:768px){.notifications-inbox .inbox-header{align-items:flex-start;flex-direction:column;gap:1rem}.notifications-inbox .header-controls{flex-direction:column;width:100%}.notifications-inbox .btn-mark-all,.notifications-inbox .filter-select{width:100%}.notifications-inbox .notification-card{flex-direction:column}.notifications-inbox .notification-header{flex-direction:column;gap:.5rem}.notifications-inbox .notification-footer{justify-content:space-between}.notifications-inbox .pagination{flex-direction:column;gap:.5rem}.notifications-inbox .btn-paginate{width:100%}}.messages-container{background:#fff;border-radius:12px;box-shadow:0 4px 20px #0000001a;display:flex;height:100vh;overflow:hidden}.messages-container .conversations-panel{background:#fafafa;border-right:1px solid #f0f0f0;display:flex;flex-direction:column;width:320px}.messages-container .panel-header{align-items:center;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;display:flex;justify-content:space-between;padding:1.5rem}.messages-container .panel-header h2{font-size:1.3rem;font-weight:600;margin:0}.messages-container .badge-count{background:#ff4757;border-radius:20px;color:#fff;font-size:.75rem;font-weight:600;min-width:24px;padding:.3rem .7rem;text-align:center}.messages-container .search-box{border-bottom:1px solid #e0e0e0;padding:1rem}.messages-container .search-input{border:1px solid #e0e0e0;border-radius:8px;font-size:.9rem;padding:.75rem;transition:all .3s ease;width:100%}.messages-container .search-input:focus{border-color:#667eea;box-shadow:0 0 0 3px #667eea1a;outline:none}.messages-container .conversations-list{flex:1 1;overflow-y:auto;padding:.5rem}.messages-container .conversation-item{background:#fff;border:1px solid #0000;border-radius:8px;cursor:pointer;display:flex;gap:1rem;margin-bottom:.5rem;padding:1rem;position:relative;transition:all .3s ease}.messages-container .conversation-item:hover{background:#f5f5f5;border-color:#e0e0e0}.messages-container .conversation-item.active{background:#fff;border-color:#667eea;box-shadow:0 0 0 2px #667eea1a}.messages-container .conversation-item.unread{background:#f0f4ff;border-left:3px solid #667eea}.messages-container .conversation-avatar{align-items:center;background:linear-gradient(135deg,#667eea,#764ba2);border-radius:50%;color:#fff;display:flex;flex-shrink:0;font-size:1.2rem;font-weight:600;height:48px;justify-content:center;width:48px}.messages-container .conversation-info{flex:1 1;min-width:0}.messages-container .info-header{align-items:baseline;display:flex;gap:.5rem;justify-content:space-between;margin-bottom:.3rem}.messages-container .info-header h4{color:#333;font-size:.95rem;font-weight:600;margin:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.messages-container .timestamp{color:#999;font-size:.8rem;white-space:nowrap}.messages-container .course-badge{background:#e8f0fe;border-radius:4px;color:#1967d2;display:inline-block;font-size:.75rem;font-weight:500;margin-bottom:.3rem;overflow:hidden;padding:.25rem .5rem;text-overflow:ellipsis;white-space:nowrap}.messages-container .last-message{color:#999;font-size:.85rem;margin:.3rem 0 0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.messages-container .unread-badge{align-items:center;background:#ff4757;border-radius:50%;color:#fff;display:flex;font-size:.75rem;font-weight:600;height:24px;justify-content:center;position:absolute;right:.5rem;top:.5rem;width:24px}.messages-container .empty-conversations{align-items:center;color:#999;display:flex;flex:1 1;flex-direction:column;justify-content:center}.messages-container .empty-icon{font-size:2.5rem;margin-bottom:1rem}.messages-container .chat-panel{background:#fff;display:flex;flex:1 1;flex-direction:column}.messages-container .chat-header{align-items:center;background:linear-gradient(135deg,#667eea,#764ba2);border-bottom:1px solid #f0f0f0;color:#fff;display:flex;justify-content:space-between;padding:1.5rem}.messages-container .header-info h3{font-size:1.1rem;font-weight:600;margin:0 0 .3rem}.messages-container .header-info p{font-size:.9rem;margin:0;opacity:.9}.messages-container .header-actions{display:flex;gap:.5rem}.messages-container .btn-icon{align-items:center;background:#fff3;border:1px solid #ffffff4d;border-radius:50%;color:#fff;cursor:pointer;display:flex;font-size:1rem;height:36px;justify-content:center;transition:all .3s ease;width:36px}.messages-container .btn-icon:hover{background:#ffffff4d;border-color:#fff}.messages-container .messages-area{background:#fff;display:flex;flex:1 1;flex-direction:column;gap:.75rem;overflow-y:auto;padding:1.5rem}.messages-container .message-bubble{align-items:flex-end;display:flex;gap:.5rem}.messages-container .message-bubble.sent{justify-content:flex-end}.messages-container .message-content{word-wrap:break-word;animation:slideUp .3s ease;border-radius:12px;max-width:60%;padding:.8rem 1rem}.messages-container .message-bubble.sent .message-content{background:linear-gradient(135deg,#667eea,#764ba2);border-bottom-right-radius:4px;color:#fff}.messages-container .message-bubble.received .message-content{background:#f0f0f0;border-bottom-left-radius:4px;color:#333}.messages-container .message-content p{line-height:1.4;margin:0 0 .3rem}.messages-container .message-time{display:block;font-size:.75rem;margin-top:.25rem;opacity:.7}.messages-container .message-bubble.sent .message-time{text-align:right}.messages-container .read-indicator{color:#fff;font-size:.75rem;margin-left:.5rem}.messages-container .empty-chat{align-items:center;color:#ccc;display:flex;flex:1 1;flex-direction:column;justify-content:center}.messages-container .empty-chat .empty-icon{font-size:3rem;margin-bottom:1rem}.messages-container .empty-chat h4{color:#999;margin:1rem 0 .5rem}.messages-container .empty-chat p{color:#ccc;font-size:.9rem;margin:0}.messages-container .message-input-form{background:#fff;border-top:1px solid #f0f0f0;display:flex;gap:.75rem;padding:1rem}.messages-container .message-input{border:1px solid #e0e0e0;border-radius:24px;flex:1 1;font-family:inherit;font-size:.95rem;padding:.75rem 1rem;transition:all .3s ease}.messages-container .message-input:focus{border-color:#667eea;box-shadow:0 0 0 3px #667eea1a;outline:none}.messages-container .btn-send{background:linear-gradient(135deg,#667eea,#764ba2);border:none;border-radius:24px;color:#fff;cursor:pointer;font-weight:600;padding:.75rem 1.5rem;transition:all .3s ease}.messages-container .btn-send:hover:not(:disabled){box-shadow:0 4px 12px #667eea4d;transform:translateY(-2px)}.messages-container .btn-send:disabled{cursor:not-allowed;opacity:.5}.messages-container .no-conversation{align-items:center;background:#fff;color:#ccc;display:flex;flex:1 1;flex-direction:column;justify-content:center}.messages-container .no-conv-icon{font-size:3rem;margin-bottom:1rem}.messages-container .no-conversation h3{color:#999;margin:1rem 0 .5rem}.messages-container .no-conversation p{color:#ccc;margin:0}.messages-container .loading-skeleton{flex:1 1;padding:1rem}.messages-container .skeleton-item{animation:loading 1.5s infinite;background:linear-gradient(90deg,#f0f0f0,#f5f5f5 50%,#f0f0f0);background-size:200% 100%;border-radius:8px;height:80px;margin-bottom:1rem}.messages-container .conversations-list::-webkit-scrollbar,.messages-container .messages-area::-webkit-scrollbar{width:6px}.messages-container .conversations-list::-webkit-scrollbar-track,.messages-container .messages-area::-webkit-scrollbar-track{background:#f0f0f0}.messages-container .conversations-list::-webkit-scrollbar-thumb,.messages-container .messages-area::-webkit-scrollbar-thumb{background:#ccc;border-radius:3px}.messages-container .conversations-list::-webkit-scrollbar-thumb:hover,.messages-container .messages-area::-webkit-scrollbar-thumb:hover{background:#999}@media (max-width:1024px){.messages-container .conversations-panel{width:280px}.messages-container .message-content{max-width:70%}}@media (max-width:768px){.messages-container{flex-direction:column;height:auto}.messages-container .conversations-panel{border-bottom:1px solid #f0f0f0;border-right:none;max-height:300px;width:100%}.messages-container .chat-panel{height:calc(100vh - 360px)}.messages-container .message-content{max-width:80%}}@media (max-width:600px){.messages-container .message-content{max-width:90%}.messages-container .chat-header,.messages-container .messages-area,.messages-container .panel-header{padding:1rem}}.faculty-comm-wrapper{background:#f5f7fa;border-radius:8px;box-shadow:0 2px 8px #0000001a;display:flex;flex-direction:column;height:100%;overflow:hidden}@media (max-width:768px){.comm-tabs{flex-wrap:wrap}.comm-tab{flex:1 1 33.33%;font-size:12px;padding:12px 10px}.comm-content{padding:15px}}:root{--primary:#1e3a8a;--primary-dark:#1e40af;--primary-light:#3b82f6;--secondary:#10b981;--accent:#0ea5e9;--success:#10b981;--warning:#f59e0b;--danger:#ef4444;--gray-100:#f8fafc;--gray-200:#e2e8f0;--gray-300:#cbd5e1;--gray-600:#475569;--gray-800:#1e293b;--text-dark:#0f172a;--text-light:#64748b;--sidebar-width:280px;--sidebar-width-closed:80px;--border-radius:12px;--transition:all 0.3s ease}.faculty-layout{background-color:#f8fafc;background-color:var(--gray-100);display:flex;min-height:100vh}.faculty-sidebar{background:linear-gradient(135deg,#1e3a8a,#10b981);box-shadow:0 10px 30px #1e3a8a26;color:#fff;height:100vh;overflow-y:auto;padding:20px;position:fixed;transition:all .3s ease;transition:var(--transition);width:280px;width:var(--sidebar-width);z-index:100}.faculty-sidebar.closed{width:80px;width:var(--sidebar-width-closed)}.sidebar-header{border-bottom:1px solid #fff3;margin-bottom:30px;padding-bottom:15px}.sidebar-logo{align-items:center;display:flex;font-size:24px;font-weight:700;gap:10px}.logo-icon{font-size:28px}.sidebar-toggle{align-items:center;background:#fff3;border:none;border-radius:8px;color:#fff;cursor:pointer;display:flex;font-size:18px;height:35px;justify-content:center;transition:all .3s ease;transition:var(--transition);width:35px}.sidebar-toggle:hover{background:#ffffff4d;transform:scale(1.05)}.sidebar-user-card{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#ffffff1a;border:1px solid #fff3;border-radius:12px;border-radius:var(--border-radius);margin-bottom:30px;padding:20px;text-align:center}.user-avatar-large{align-items:center;background:#fff3;border-radius:50%;display:flex;font-size:28px;font-weight:700;height:60px;justify-content:center;margin:0 auto 15px;width:60px}.sidebar-user-card h3{font-size:16px;font-weight:600;margin:0}.sidebar-user-card p{font-size:13px;margin:5px 0 0;opacity:.8}.sidebar-nav{list-style:none;margin:0;padding:0}.nav-item{background:none;border-radius:8px;color:#fffc;font-size:14px;gap:12px;margin-bottom:8px;padding:12px 15px;transition:all .3s ease;transition:var(--transition)}.nav-item:hover{background:#ffffff26;color:#fff}.nav-item.active{background:#ffffff40}.nav-icon{font-size:18px;min-width:20px}.nav-label{flex:1 1}.nav-divider{border:none;border-top:1px solid #fff3;margin:15px 0}.nav-item.logout:hover{background:#ef44444d;color:#fca5a5}.sidebar-footer{bottom:20px;left:20px;position:absolute;right:20px}.faculty-content{flex:1 1;margin-left:280px;margin-left:var(--sidebar-width);overflow-y:auto;padding:40px;transition:all .3s ease;transition:var(--transition)}.faculty-sidebar.closed~.faculty-content{margin-left:80px;margin-left:var(--sidebar-width-closed)}.section-container{animation:fadeIn .3s ease}.section-header{margin-bottom:40px}.section-header h1{color:#0f172a;color:var(--text-dark);font-size:32px;font-weight:700;margin:0 0 10px}.section-header p{color:#64748b;color:var(--text-light);font-size:15px;margin:0 0 20px}.btn-create-course{display:inline-block;margin-top:10px}.profile-section{grid-gap:40px;display:grid;gap:40px;grid-template-columns:300px 1fr}.profile-card{background:#fff;border-radius:12px;border-radius:var(--border-radius);box-shadow:0 2px 8px #0000000d;padding:40px;text-align:center}.profile-avatar{background:linear-gradient(135deg,#1e3a8a,#10b981);background:linear-gradient(135deg,var(--primary),var(--secondary));font-size:48px;height:100px;margin:0 auto 20px;width:100px}.profile-card h2{color:#0f172a;color:var(--text-dark);font-size:24px;margin:0 0 5px}.profile-email{color:#64748b;color:var(--text-light);font-size:14px;margin:5px 0}.profile-department{color:#1e3a8a;color:var(--primary);font-weight:500;margin:5px 0 0}.stats-grid{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));margin-bottom:40px}.stat-card{border-radius:var(--border-radius);box-shadow:0 2px 8px #0000000d;gap:20px;padding:25px;transition:var(--transition)}.stat-card:hover{box-shadow:0 8px 16px #0000001a;transform:translateY(-2px)}.stat-icon{font-size:40px;min-width:60px;text-align:center}.stat-value{color:#0f172a;color:var(--text-dark);font-size:28px;margin:0}.stat-label{color:#64748b;color:var(--text-light);margin:5px 0 0}.courses-grid{grid-gap:25px;gap:25px;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));margin-bottom:40px}.course-card-pro{background:#fff;border-left:4px solid #1e3a8a;border-left:4px solid var(--primary);border-radius:12px;border-radius:var(--border-radius);box-shadow:0 2px 8px #0000000d;padding:25px;transition:all .3s ease;transition:var(--transition)}.course-card-pro:hover{box-shadow:0 12px 24px #0000001a;transform:translateY(-4px)}.course-header-pro{align-items:flex-start;display:flex;justify-content:space-between;margin-bottom:12px}.course-header-pro h3{color:#0f172a;color:var(--text-dark);flex:1 1;font-size:18px;margin:0}.badge{font-size:11px;text-transform:uppercase}.badge-published{background:#d1fae5;color:#065f46}.badge-draft{color:#92400e}.badge-program{color:#4338ca}.badge-status{background:#dbeafe;color:#1e40af}.course-description{color:#64748b;color:var(--text-light);font-size:14px}.course-meta-pro{border-bottom:1px solid #e2e8f0;border-bottom:1px solid var(--gray-200);border-top:1px solid #e2e8f0;border-top:1px solid var(--gray-200);display:flex;gap:15px;margin:15px 0;padding:15px 0}.meta-item{align-items:center;color:#64748b;color:var(--text-light);display:flex;font-size:13px;gap:6px}.meta-item .icon{font-size:16px}.course-actions-pro{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.btn-danger,.btn-link,.btn-primary,.btn-secondary,.btn-success,.btn-warning{border:none;border-radius:8px;cursor:pointer;display:inline-block;font-family:inherit;font-size:13px;font-weight:600;padding:10px 16px;text-decoration:none;transition:all .3s ease;transition:var(--transition)}.btn-primary{background:#1e3a8a}.btn-primary:hover{background:#1e40af;background:var(--primary-dark);box-shadow:0 4px 12px #667eea66;transform:translateY(-2px)}.btn-secondary{background:#e2e8f0;background:var(--gray-200);color:#0f172a;color:var(--text-dark)}.btn-secondary:hover{background:#cbd5e1;background:var(--gray-300)}.btn-success{background:#10b981}.btn-success:hover{background:#059669;box-shadow:0 4px 12px #10b98166}.btn-warning{background:#f59e0b;background:var(--warning);color:#fff}.btn-warning:hover{background:#d97706}.btn-danger{color:#ef4444}.btn-link{color:#1e3a8a;color:var(--primary)}.btn-link:hover{color:#1e40af;color:var(--primary-dark)}.filters-section{display:flex;flex-wrap:wrap;gap:15px;margin-bottom:25px}.filter-group{flex:1 1;min-width:250px}.filter-input,.filter-select{border:1px solid #cbd5e1;border:1px solid var(--gray-300);border-radius:8px;font-size:14px;padding:12px 15px;transition:all .3s ease;transition:var(--transition);width:100%}.filter-input:focus,.filter-select:focus{border-color:#1e3a8a;border-color:var(--primary);box-shadow:0 0 0 3px #667eea1a}.students-summary{display:flex;gap:15px;margin-bottom:25px}.summary-card{align-items:center;background:#fff;border-radius:12px;border-radius:var(--border-radius);box-shadow:0 2px 8px #0000000d;display:flex;flex:1 1;justify-content:space-between;padding:20px}.summary-label{color:#64748b;color:var(--text-light);font-size:13px}.summary-value{color:#1e3a8a;color:var(--primary);font-size:28px;font-weight:700}.table-responsive{border-radius:12px;border-radius:var(--border-radius);box-shadow:0 2px 8px #0000000d;overflow:hidden}.students-table{background:#fff}.students-table thead{background:#f8fafc;background:var(--gray-100);border-bottom:2px solid #e2e8f0;border-bottom:2px solid var(--gray-200)}.students-table th{color:#0f172a;color:var(--text-dark);letter-spacing:.5px;padding:16px}.students-table tbody tr{border-bottom:1px solid #e2e8f0;border-bottom:1px solid var(--gray-200);transition:all .3s ease;transition:var(--transition)}.students-table tbody tr:hover{background:#f8fafc;background:var(--gray-100)}.students-table td{color:#0f172a;color:var(--text-dark);padding:16px}.student-cell{gap:12px}.student-avatar{background:linear-gradient(135deg,#1e3a8a,#10b981);background:linear-gradient(135deg,var(--primary),var(--secondary));flex-shrink:0;font-size:16px;height:40px;width:40px}.student-name{color:#0f172a;color:var(--text-dark);font-weight:600;margin:0}.student-email{color:#64748b;color:var(--text-light);font-size:12px;margin:4px 0 0}.course-name{background:#f8fafc;background:var(--gray-100);border-radius:6px;color:#0f172a;color:var(--text-dark);display:inline-block;font-size:13px;font-weight:500;padding:4px 12px}.status-badge{font-weight:600}.status-active{background:#d1fae5;color:#065f46}.status-dropped{background:#fee2e2;color:#991b1b}.status-completed{background:#d1fae5;color:#065f46}.empty-state{background:#fff;border-radius:12px;border-radius:var(--border-radius);box-shadow:0 2px 8px #0000000d;padding:60px 40px}.empty-state h3{color:#0f172a;color:var(--text-dark);font-size:20px;margin:0 0 10px}.empty-state p{color:#64748b;color:var(--text-light)}.modal-overlay{align-items:center;background:#00000080;bottom:0;display:flex;justify-content:center;left:0;position:fixed;right:0;top:0;z-index:1000}.modal-content-large{animation:slideUp .3s ease;background:#fff;border-radius:12px;border-radius:var(--border-radius);box-shadow:0 20px 60px #0000004d;max-height:90vh;max-width:90vw;overflow-y:auto;position:relative}.modal-close{background:#e2e8f0;background:var(--gray-200);border:none;border-radius:50%;color:#0f172a;color:var(--text-dark);cursor:pointer;font-size:20px;height:36px;position:absolute;right:20px;top:20px;transition:all .3s ease;transition:var(--transition);width:36px;z-index:10}.modal-close:hover{background:#cbd5e1;background:var(--gray-300)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@media (max-width:1200px){.profile-section{grid-template-columns:1fr}.courses-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr))}}@media (max-width:768px){.faculty-content{margin-left:80px;margin-left:var(--sidebar-width-closed);padding:20px}.section-header h1{font-size:24px}.filters-section{flex-direction:column}.filter-group{min-width:auto}.stats-grid{grid-template-columns:repeat(auto-fill,minmax(200px,1fr))}.courses-grid{grid-template-columns:1fr}.table-responsive{overflow-x:auto}.students-table{font-size:12px}.students-table td,.students-table th{padding:12px}}@media (max-width:480px){.faculty-sidebar{width:80px;width:var(--sidebar-width-closed)}.faculty-content{margin-left:80px;margin-left:var(--sidebar-width-closed);padding:15px}.section-header h1{font-size:20px}.stat-card{flex-direction:column;text-align:center}.student-cell{flex-direction:column;gap:0}}.dashboard-header{align-items:flex-start;background:#fff;border-radius:12px;box-shadow:0 1px 3px #0000001a;display:flex;justify-content:space-between;margin-bottom:30px;padding:30px}.header-content h1{color:#1f2937;font-size:28px;margin:0 0 8px}.header-content p{color:#6b7280;font-size:14px;margin:0}.stats-grid{grid-gap:20px;display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));margin-bottom:30px}.stat-card{align-items:center;background:#fff;border-radius:12px;box-shadow:0 1px 3px #0000001a;display:flex;gap:15px;padding:20px;transition:all .3s ease}.stat-card:hover{box-shadow:0 4px 12px #0000001a}.stat-icon{font-size:32px}.stat-content{flex:1 1}.stat-value{color:#1f2937;font-size:24px}.stat-label{color:#6b7280;font-size:13px;margin-top:4px}.tabs-section{background:#fff;border-radius:12px;box-shadow:0 1px 3px #0000001a;overflow:hidden}.tabs-header{border-bottom:2px solid #e5e7eb;display:flex;padding:0 30px}.tab{background:none;border:none;color:#6b7280;cursor:pointer;flex:1 1;font-size:14px;font-weight:500;max-width:200px;padding:15px 0;position:relative;transition:color .3s ease}.tab.active,.tab:hover{color:#4f46e5}.tab.active:after{background:#4f46e5;bottom:-2px;content:"";height:2px;left:0;position:absolute;right:0}.tab-content{padding:30px}.courses-grid{grid-template-columns:repeat(auto-fill,minmax(300px,1fr))}.course-card{background:#fff;border:1px solid #e5e7eb;border-radius:12px;overflow:hidden;transition:all .3s ease}.course-card:hover{border-color:#4f46e5;box-shadow:0 8px 16px #4f46e51a}.course-thumbnail{align-items:center;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;display:flex;font-size:40px;height:180px;justify-content:center;overflow:hidden;width:100%}.course-thumbnail img{height:100%;object-fit:cover;width:100%}.course-content{display:flex;flex:1 1;flex-direction:column;padding:20px}.course-content h3{color:#1f2937;font-size:16px;font-weight:600;margin:0 0 10px}.course-description{color:#6b7280;font-size:13px;line-height:1.5;margin:0 0 15px}.course-meta{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:15px}.badge{display:inline-block;font-size:12px;font-weight:500;padding:4px 12px}.badge-program{background:#e0e7ff;color:#4f46e5}.badge-published{background:#dcfce7;color:#16a34a}.badge-draft{background:#fef3c7;color:#d97706}.course-stats-row{border-bottom:1px solid #e5e7eb;display:flex;gap:15px;margin-bottom:15px;padding-bottom:15px}.stat-item{align-items:center;color:#6b7280;display:flex;font-size:13px;gap:6px}.stat-item .icon{font-size:16px}.course-actions{display:flex;gap:8px;margin-top:auto}.course-actions button{border:none;border-radius:6px;cursor:pointer;flex:1 1;font-size:12px;font-weight:500;padding:8px 12px;transition:all .3s ease}.students-table-container{overflow-x:auto}.students-table{border-collapse:collapse;width:100%}.students-table thead{background:#f9fafb;border-bottom:2px solid #e5e7eb}.students-table th{color:#374151;font-size:13px;font-weight:600;padding:15px;text-align:left;text-transform:uppercase}.students-table td{border-bottom:1px solid #e5e7eb;color:#6b7280;font-size:14px;padding:15px}.student-cell{align-items:center;color:#1f2937;display:flex;font-weight:500;gap:10px}.student-avatar{background:#4f46e5;border-radius:50%;color:#fff;font-size:14px;font-weight:600;height:36px;width:36px}.progress-bar,.student-avatar{align-items:center;display:flex;justify-content:center}.progress-bar{background:#e5e7eb;border-radius:12px;height:24px;position:relative}.progress-fill{background:linear-gradient(90deg,#4f46e5,#7c3aed);left:0;position:absolute;top:0;transition:width .3s ease}.progress-text{color:#fff;font-size:11px;font-weight:600;position:relative;z-index:1}.status-badge{border-radius:6px;display:inline-block;font-weight:500;padding:6px 12px}.status-active{background:#dcfce7;color:#16a34a}.btn-link{background:none;border:none;color:#4f46e5;cursor:pointer;font-size:13px;font-weight:500;padding:0;text-decoration:underline}.btn-link:hover{color:#4338ca}.empty-state{color:#6b7280}.empty-icon{font-size:64px;margin-bottom:20px}.empty-state h3{color:#1f2937;font-size:18px}.empty-state p{font-size:14px;margin:0}.btn-primary{background:#4f46e5;border-radius:6px;transition:all .3s ease}.btn-primary:hover{background:#4338ca}.btn-secondary{background:#fff;border:1px solid #d1d5db;color:#6b7280}.btn-secondary:hover{background:#f9fafb;border-color:#4f46e5;color:#4f46e5}.btn-danger{background:#fee2e2;border:1px solid #fecaca;color:#dc2626}.btn-sm{font-size:12px;padding:6px 12px}@media (max-width:768px){.dashboard-header{flex-direction:column;gap:15px}.courses-grid,.stats-grid{grid-template-columns:1fr}.tabs-header{overflow-x:auto;padding:0}.tab{flex:0 1 auto;max-width:none;white-space:nowrap}.course-actions{flex-direction:column}.students-table{font-size:13px}.students-table td,.students-table th{padding:10px}}.student-dashboard-container{background:var(--bg);display:flex;min-height:100vh}.sidebar{background:var(--bg-sidebar);bottom:0;color:var(--text-inverse);display:flex;flex-direction:column;left:0;overflow:hidden;position:fixed;top:0;transition:width .3s var(--ease);width:260px;z-index:100}.sidebar.closed{width:72px}.sidebar-header{border-bottom:1px solid #ffffff14;justify-content:space-between;min-height:68px;padding:22px 20px 18px}.sidebar-brand,.sidebar-header{align-items:center;display:flex}.sidebar-brand{gap:12px}.sidebar-header h2{font-size:1.15rem;font-weight:700;letter-spacing:-.3px;margin:0;opacity:1;transition:opacity .2s var(--ease);white-space:nowrap}.sidebar.closed .sidebar-header h2{opacity:0;overflow:hidden;width:0}.toggle-btn{align-items:center;background:none;border:none;border-radius:var(--radius-sm);color:var(--text-muted);cursor:pointer;display:flex;flex-shrink:0;font-size:18px;height:32px;justify-content:center;transition:all var(--duration) var(--ease);width:32px}.toggle-btn:hover{background:#ffffff14;color:#fff}.sidebar-nav{display:flex;flex:1 1;flex-direction:column;gap:2px;overflow-y:auto;padding:12px 10px}.nav-item{align-items:center;background:#0000;border:none;border-radius:var(--radius);color:var(--text-muted);cursor:pointer;display:flex;font-family:inherit;font-size:.875rem;font-weight:500;gap:14px;padding:11px 14px;position:relative;text-align:left;transition:all var(--duration) var(--ease);white-space:nowrap;width:100%}.nav-item:hover{background:var(--bg-sidebar-hover);color:var(--text-inverse)}.nav-item.active{background:#4f46e52e;color:#fff}.nav-item.active:before{background:var(--accent);border-radius:0 4px 4px 0;bottom:6px;content:"";left:0;position:absolute;top:6px;width:3px}.nav-item .icon{flex-shrink:0;font-size:18px;min-width:22px;text-align:center}.nav-item .label{flex:1 1;opacity:1;transition:opacity .15s var(--ease)}.sidebar.closed .nav-item{justify-content:center;padding:11px 0}.sidebar.closed .nav-item .label{opacity:0;overflow:hidden;position:absolute;width:0}.sidebar-user{align-items:center;border-top:1px solid #ffffff14;display:flex;gap:12px;padding:16px}.sidebar-user-avatar{align-items:center;background:var(--accent);border-radius:50%;color:#fff;display:flex;flex-shrink:0;font-size:.8rem;font-weight:700;height:36px;justify-content:center;width:36px}.sidebar-user-info{flex:1 1;overflow:hidden}.sidebar-user-name{color:#fff;font-size:.85rem;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.sidebar-user-role{color:var(--text-muted);font-size:.7rem}.sidebar.closed .sidebar-user-info{display:none}.sidebar-logout-btn{align-items:center;background:none;border:none;border-radius:var(--radius-sm);color:var(--text-muted);cursor:pointer;display:flex;font-size:16px;padding:6px;transition:all var(--duration) var(--ease)}.sidebar-logout-btn:hover{background:#ef44441a;color:#ef4444}.main-content{display:flex;flex:1 1;flex-direction:column;margin-left:260px;min-height:100vh;transition:margin-left .3s var(--ease)}.sidebar.closed~.main-content{margin-left:72px}.topbar{background:var(--bg-card);border-bottom:1px solid var(--border);flex-shrink:0;height:64px;justify-content:space-between;padding:0 32px;position:-webkit-sticky;position:sticky;top:0;z-index:50}.topbar,.topbar-left{align-items:center;display:flex}.topbar-left{gap:12px}.topbar-title{color:var(--text);font-size:1.05rem;font-weight:600}.topbar-breadcrumb{color:var(--text-muted);font-size:.8rem;font-weight:400}.topbar-right{gap:8px}.topbar-icon-btn,.topbar-right{align-items:center;display:flex}.topbar-icon-btn{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);color:var(--text-secondary);cursor:pointer;font-size:16px;height:38px;justify-content:center;position:relative;transition:all var(--duration) var(--ease);width:38px}.topbar-icon-btn:hover{background:var(--primary-50);border-color:var(--primary-200);color:var(--primary)}.notification-dot{background:var(--danger);border:2px solid var(--bg-card);border-radius:50%;height:8px;position:absolute;right:6px;top:6px;width:8px}.topbar-avatar{align-items:center;background:var(--primary);border-radius:50%;color:#fff;cursor:pointer;display:flex;font-size:.85rem;font-weight:700;height:36px;justify-content:center;margin-left:4px;transition:box-shadow var(--duration) var(--ease);width:36px}.topbar-avatar:hover{box-shadow:0 0 0 3px var(--primary-100)}.page-content{animation:fadeIn .35s var(--ease);flex:1 1;padding:28px 32px 40px}.welcome-section{align-items:center;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);display:flex;justify-content:space-between;margin-bottom:28px;padding:32px 36px}.welcome-content h1{color:var(--text);font-size:1.5rem;font-weight:700;margin:0 0 6px}.welcome-content p{color:var(--text-secondary);font-size:.925rem;margin:0}.welcome-stats{display:flex;gap:16px}.stat-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);min-width:120px;padding:16px 22px;text-align:center;transition:all var(--duration) var(--ease)}.stat-card:hover{border-color:var(--primary-200);box-shadow:var(--shadow)}.stat-card .stat-value{color:var(--primary);font-size:1.5rem;font-weight:700;line-height:1;margin-bottom:4px}.stat-card .stat-label{color:var(--text-muted);font-size:.75rem;font-weight:500;letter-spacing:.3px;text-transform:uppercase}.section-content{animation:fadeIn .3s var(--ease);background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:28px 32px}.section-content h2{align-items:center;color:var(--text);display:flex;font-size:1.15rem;font-weight:600;gap:10px;margin:0 0 24px}.filters-section{grid-gap:16px;background:var(--bg);border:1px solid var(--border-light);border-radius:var(--radius);display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));margin-bottom:24px;padding:20px}.filter-group{display:flex;flex-direction:column;gap:6px}.filter-group label{color:var(--text-muted);font-size:.72rem;font-weight:600;letter-spacing:.4px;text-transform:uppercase}.filter-input,.filter-select{-webkit-appearance:none;appearance:none;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);font-family:inherit;font-size:.875rem;padding:9px 13px;transition:all var(--duration) var(--ease)}.filter-input:focus,.filter-select:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-50);outline:none}.filter-input::placeholder{color:var(--text-muted)}.courses-grid{grid-gap:20px;display:grid;gap:20px;grid-template-columns:repeat(auto-fill,minmax(290px,1fr))}.course-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);display:flex;flex-direction:column;padding:24px;transition:all .25s var(--ease)}.course-card:hover{border-color:var(--primary-200);box-shadow:var(--shadow-lg);transform:translateY(-3px)}.course-header{align-items:flex-start;display:flex;gap:12px;justify-content:space-between;margin-bottom:16px}.course-header h3{color:var(--text);flex:1 1;font-size:1rem;font-weight:600;line-height:1.4;margin:0}.badge{align-items:center;border-radius:20px;display:inline-flex;font-size:.7rem;font-weight:600;letter-spacing:.2px;padding:3px 10px;text-transform:capitalize;white-space:nowrap}.badge-info{background:var(--info-light);color:var(--info)}.badge-active,.badge-success{background:var(--success-light);color:var(--success)}.badge-danger,.badge-inactive{background:var(--danger-light);color:var(--danger)}.badge-warning{background:var(--warning-light);color:#92400e}.course-description{color:var(--text-secondary);font-size:.875rem;line-height:1.6;margin-bottom:16px}.course-meta{margin-bottom:12px}.course-progress{align-items:center;display:flex;justify-content:center;margin:8px 0 16px}.course-info{border-bottom:1px solid var(--border-light);display:flex;gap:16px;margin-bottom:16px;padding-bottom:16px}.info-item{color:var(--text-secondary);font-size:.8rem;gap:6px}.info-item .icon{font-size:15px;opacity:.7}.btn-primary{align-items:center;border:none;border-radius:var(--radius);cursor:pointer;display:inline-flex;font-family:inherit;font-size:.875rem;font-weight:600;gap:6px;justify-content:center;margin-bottom:8px;padding:10px 20px;transition:all var(--duration) var(--ease)}.btn-primary:hover{background:var(--primary-light);box-shadow:var(--shadow-md);transform:translateY(-1px)}.btn-primary:active{transform:translateY(0)}.btn-primary:disabled{opacity:.5;transform:none}.btn-secondary{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);color:var(--text);cursor:pointer;font-family:inherit;font-size:.875rem;font-weight:600;margin-bottom:8px;padding:10px 20px;transition:all var(--duration) var(--ease);width:100%}.btn-secondary:hover{background:var(--bg);border-color:var(--text-muted)}.btn-success{align-items:center;background:var(--success);border:none;border-radius:var(--radius);color:#fff;cursor:pointer;display:inline-flex;font-family:inherit;font-size:.875rem;font-weight:600;justify-content:center;padding:10px 20px;transition:all var(--duration) var(--ease);width:100%}.btn-success:hover{background:#15803d;box-shadow:var(--shadow)}.btn-danger{align-items:center;background:var(--danger-light);border:none;border-radius:var(--radius);color:var(--danger);cursor:pointer;display:inline-flex;font-family:inherit;font-size:.875rem;font-weight:600;justify-content:center;padding:10px 20px;transition:all var(--duration) var(--ease);width:100%}.btn-danger:hover{background:#fecaca}.btn-block{display:flex}.btn-sm{font-size:.8rem;padding:7px 14px}.empty-state{animation:fadeIn .4s var(--ease);padding:60px 20px;text-align:center}.empty-icon{font-size:48px;margin-bottom:16px;opacity:.4}.empty-state h3{color:var(--text);font-size:1.1rem;font-weight:600;margin:0 0 8px}.empty-state p{color:var(--text-secondary);font-size:.875rem;margin:0 0 20px}.empty-state .btn-primary{display:inline-flex;width:auto}.learning-view{background:#0000!important;border:none!important;box-shadow:none!important;padding:0!important}.course-hero{background:var(--primary);border-radius:var(--radius-lg);color:#fff;margin-bottom:24px;overflow:hidden;padding:36px 40px;position:relative}.course-hero:after{background:#ffffff0d;border-radius:50%;content:"";height:300px;pointer-events:none;position:absolute;right:-10%;top:-60%;width:300px}.course-hero-content h2{color:#fff;font-size:1.4rem;font-weight:700;margin:0 0 10px}.course-hero-content p{font-size:.925rem;line-height:1.6;margin:0;max-width:600px;opacity:.85}.weekly-progress-section{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);margin-bottom:24px;padding:28px 32px}.weekly-progress-section h3{color:var(--text);font-size:1.05rem;font-weight:600;margin:0 0 20px}.weeks-timeline{display:flex;flex-direction:column;gap:8px}.week-item{align-items:center;background:var(--bg);border-left:3px solid var(--border);border-radius:var(--radius);display:flex;gap:16px;padding:14px 18px;transition:all var(--duration) var(--ease)}.week-item:hover{background:var(--primary-50)}.week-item.week-completed{background:var(--success-light);border-left-color:var(--success)}.week-item.week-current{background:var(--accent-50);border-left-color:var(--accent)}.week-item.week-locked{border-left-color:var(--border);opacity:.55}.week-indicator{align-items:center;background:var(--bg-card);border-radius:var(--radius-sm);box-shadow:var(--shadow-sm);display:flex;flex-shrink:0;font-size:16px;font-weight:600;height:36px;justify-content:center;width:36px}.week-info{flex:1 1}.week-info h4{color:var(--text);font-size:.9rem;font-weight:600;margin:0 0 2px}.week-info p{color:var(--text-secondary);font-size:.8rem;margin:0}.week-status{border-radius:20px;font-size:.7rem;font-weight:600;padding:4px 12px;white-space:nowrap}.status-completed{background:var(--success);color:#fff}.status-current{background:var(--accent);color:#fff}.status-locked{background:var(--border);color:var(--text-muted)}.current-week-section{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:28px 32px}.current-week-section h3{color:var(--text);font-size:1.05rem;font-weight:600;margin:0 0 20px}.profile-card{background:var(--bg-card);border-radius:var(--radius-lg);overflow:hidden}.profile-header{align-items:center;border-bottom:1px solid var(--border-light);display:flex;gap:24px;margin-bottom:28px;padding-bottom:28px}.profile-avatar{align-items:center;background:var(--primary);border-radius:50%;color:#fff;display:flex;flex-shrink:0;font-size:1.6rem;font-weight:700;height:72px;justify-content:center;width:72px}.profile-info h3{color:var(--text);font-size:1.25rem;font-weight:600;margin:0 0 4px}.profile-id{color:var(--text-muted);font-size:.85rem;margin:0}.profile-details{grid-gap:14px;display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}.detail-row{background:var(--bg);border-left:3px solid var(--accent);border-radius:var(--radius);display:flex;flex-direction:column;gap:4px;padding:14px 18px}.detail-label{color:var(--text-muted);font-size:.7rem;font-weight:600;letter-spacing:.5px;text-transform:uppercase}.detail-value{color:var(--text);font-size:.95rem;font-weight:500}.messages-view{background:#0000!important;border:none!important;box-shadow:none!important;padding:0!important}@media (max-width:1024px){.welcome-section{align-items:flex-start;flex-direction:column;gap:20px}.welcome-stats{flex-wrap:wrap;width:100%}.stat-card{flex:1 1;min-width:100px}}@media (max-width:768px){.sidebar{width:72px}.sidebar .nav-item .label,.sidebar .sidebar-header h2{opacity:0;overflow:hidden;width:0}.sidebar .nav-item .label{position:absolute}.sidebar .nav-item{justify-content:center;padding:11px 0}.sidebar .sidebar-user-info{display:none}.main-content{margin-left:72px}.page-content{padding:20px 16px}.topbar{padding:0 16px}.courses-grid,.filters-section{grid-template-columns:1fr}.section-content{padding:20px}.profile-header{flex-direction:column;text-align:center}.profile-details{grid-template-columns:1fr}.welcome-section{padding:24px}.welcome-content h1{font-size:1.25rem}}@media (max-width:480px){.sidebar{position:fixed;width:0}.sidebar.open{width:260px}.main-content{margin-left:0}.topbar{height:56px}.page-content{padding:16px 12px}.section-content h2{font-size:1rem}}.content-viewer-container{animation:fadeIn .3s ease;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-xl);box-shadow:var(--shadow-sm);display:flex;gap:0;height:700px;overflow:hidden}.content-sidebar{background:#f8fafc;background:var(--bg-secondary,#f8fafc);border-right:1px solid var(--border);display:flex;flex-direction:column;flex-shrink:0;width:280px}.content-sidebar h4{border-bottom:1px solid var(--border);color:var(--text-primary);font-size:13px;font-weight:700;letter-spacing:.05em;margin:0;padding:16px 20px;text-transform:uppercase}.content-list{flex:1 1;overflow-y:auto;padding:12px}.content-item{align-items:center;background:var(--surface);border:1px solid #0000;border-radius:var(--radius-md);color:var(--text-secondary);cursor:pointer;display:flex;font-size:13px;font-weight:500;gap:10px;margin-bottom:6px;padding:12px 14px;text-align:left;transition:all .25s cubic-bezier(.4,0,.2,1);width:100%}.content-item:hover{background:#eff6ff;background:var(--primary-light,#eff6ff);transform:translateX(2px)}.content-item.active,.content-item:hover{border-color:var(--primary);color:var(--primary)}.content-item.active{background:#dbeafe;box-shadow:0 1px 4px #1e3a8a1a;font-weight:600}.content-icon{flex-shrink:0;font-size:18px;text-align:center;width:24px}.content-title{flex:1 1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.viewed-badge{color:var(--success);font-size:14px;font-weight:700}.content-main{flex:1 1;min-width:0;overflow-y:auto}.content-display,.content-main{display:flex;flex-direction:column}.content-display{height:100%;padding:24px}.content-header{align-items:flex-start;border-bottom:1px solid var(--border);display:flex;gap:16px;justify-content:space-between;margin-bottom:16px;padding-bottom:16px}.content-display h3{color:var(--text-primary);font-size:18px;font-weight:700;letter-spacing:-.01em;margin:0}.viewed-status{background:#dcfce7;border-radius:20px;color:var(--success);font-size:11px;font-weight:700;letter-spacing:.03em;padding:4px 14px;text-transform:uppercase;white-space:nowrap}.content-description{color:var(--text-secondary);font-size:13px;line-height:1.7;margin:0 0 16px}.content-body{flex:1 1;margin-bottom:16px;overflow-y:auto}.content-player{align-items:center;background:#0f172a;display:flex;justify-content:center;overflow:hidden;padding:0}.content-player,.content-player video{border-radius:var(--radius-lg)}.video-error-fallback{color:#cbd5e1;padding:48px 24px;text-align:center}.video-error-fallback .error-icon{font-size:56px;margin-bottom:20px;opacity:.7}.video-error-fallback h4{color:#f1f5f9;font-size:18px;font-weight:700;margin:0 0 8px}.video-error-fallback p{color:#94a3b8;font-size:14px;line-height:1.5;margin:0 0 24px}.video-error-fallback .btn-primary{align-items:center;background:var(--accent);border:none;border-radius:var(--radius-md);color:#fff;cursor:pointer;display:inline-flex;font-size:14px;font-weight:600;gap:8px;padding:10px 24px;text-decoration:none;transition:all .25s ease}.video-error-fallback .btn-primary:hover{background:#4338ca;box-shadow:0 4px 12px #4f46e54d;transform:translateY(-1px)}.transcode-notice{background:linear-gradient(135deg,#1e293b,#0f172a);border-bottom:1px solid #334155;border-radius:var(--radius-lg) var(--radius-lg) 0 0;color:#94a3b8;font-size:13px;font-weight:500;letter-spacing:.01em;padding:10px 20px;text-align:center}.content-image,.content-viewer{background:#f8fafc;background:var(--bg-secondary,#f8fafc);border-radius:var(--radius-lg);overflow:auto}.content-link{background:linear-gradient(135deg,var(--primary) 0,var(--accent) 100%);border-radius:var(--radius-lg);padding:24px;text-align:center}.external-link{align-items:center;background:#fff;border-radius:var(--radius-md);box-shadow:0 2px 8px #0000001a;color:var(--primary);display:inline-flex;font-size:14px;font-weight:600;gap:8px;padding:12px 28px;text-decoration:none;transition:all .3s cubic-bezier(.4,0,.2,1)}.external-link:hover{background:#f0f4ff;box-shadow:0 4px 16px #00000026;transform:translateY(-2px)}.content-unknown{background:#f8fafc;background:var(--bg-secondary,#f8fafc);border:1px dashed var(--border);border-radius:var(--radius-lg);color:var(--text-secondary);padding:24px;text-align:center}.content-actions{display:flex;gap:10px}.btn-download{align-items:center;background:var(--primary);border:none;border-radius:var(--radius-md);color:#fff;cursor:pointer;display:inline-flex;font-size:13px;font-weight:600;gap:6px;padding:10px 22px;text-decoration:none;transition:all .25s ease}.btn-download:hover{background:#1e3a8a;box-shadow:0 4px 12px #1e3a8a33;transform:translateY(-1px)}.no-content{align-items:center;color:#9ca3af;color:var(--text-muted,#9ca3af);display:flex;flex-direction:column;font-size:15px;gap:8px;height:100%;justify-content:center}.no-content:before{content:"📂";font-size:48px;opacity:.5}.content-loader{align-items:center;color:var(--text-secondary);display:flex;flex-direction:column;gap:12px;height:300px;justify-content:center}.content-loader:before{animation:spin .8s linear infinite;border:3px solid var(--border);border-radius:50%;border-top-color:var(--primary);content:"";height:32px;width:32px}.content-list::-webkit-scrollbar,.content-main::-webkit-scrollbar{width:5px}.content-list::-webkit-scrollbar-track,.content-main::-webkit-scrollbar-track{background:#0000}.content-list::-webkit-scrollbar-thumb,.content-main::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:4px}.content-list::-webkit-scrollbar-thumb:hover,.content-main::-webkit-scrollbar-thumb:hover{background:#94a3b8}.content-progress-summary{background:linear-gradient(135deg,#eff6ff,#f0f9ff);border-top:1px solid var(--border);color:var(--text-secondary);font-size:12px;font-weight:600;letter-spacing:.02em;padding:12px 16px;text-align:center}.content-header-actions{align-items:center;display:flex;flex-shrink:0;gap:12px}.content-inline-viewer{border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden}.content-image-viewer,.content-inline-viewer{background:#f8fafc;background:var(--bg-secondary,#f8fafc)}.content-image-viewer{align-items:center;border-radius:var(--radius-lg);display:flex;justify-content:center;padding:24px}.content-image-viewer img{border-radius:var(--radius-md);box-shadow:var(--shadow-md);max-height:550px;max-width:100%}.audio-player{background:linear-gradient(135deg,#0f172a,#1e293b);border-radius:var(--radius-lg);flex-direction:column;padding:48px 24px}.audio-icon{filter:drop-shadow(0 4px 8px rgba(0,0,0,.3));font-size:64px;margin-bottom:24px}.docx-viewer{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);max-height:600px;overflow-y:auto;padding:32px 40px}.docx-content{color:var(--text-primary);font-family:Georgia,Times New Roman,serif;font-size:15px;line-height:1.8}.docx-content h1,.docx-content h2,.docx-content h3{color:#111827;letter-spacing:-.01em;margin-bottom:12px;margin-top:24px}.docx-content p{margin-bottom:12px}.docx-content img{border-radius:var(--radius-sm);box-shadow:var(--shadow-sm);margin:12px 0;max-width:100%}.docx-content table{border-collapse:collapse;border-radius:var(--radius-md);margin:16px 0;overflow:hidden;width:100%}.docx-content table td,.docx-content table th{border:1px solid var(--border);font-size:14px;padding:10px 14px;text-align:left}.docx-content table th{background:#f8fafc;background:var(--bg-secondary,#f8fafc);color:var(--text-primary);font-weight:600}.pptx-viewer{background:#0f172a;border-radius:var(--radius-lg);padding:24px}.slide-navigation{align-items:center;display:flex;gap:20px;justify-content:center;margin-bottom:20px}.slide-nav-btn{background:var(--accent);border:none;border-radius:var(--radius-md);color:#fff;cursor:pointer;font-size:13px;font-weight:600;padding:8px 20px;transition:all .25s ease}.slide-nav-btn:disabled{background:#334155;cursor:not-allowed;opacity:.5}.slide-nav-btn:hover:not(:disabled){background:#4338ca;transform:translateY(-1px)}.slide-counter{color:#cbd5e1;font-size:14px;font-weight:600;min-width:120px;text-align:center}.slide-content{align-items:center;background:#fff;border-radius:var(--radius-lg);box-shadow:0 8px 32px #0006;display:flex;flex-direction:column;justify-content:center;min-height:350px;padding:48px}.slide-images{margin-bottom:20px;text-align:center}.slide-image{border-radius:var(--radius-sm);margin:8px;max-height:300px;max-width:100%}.slide-texts{text-align:center;width:100%}.slide-text-line{color:var(--text-primary);font-size:18px;line-height:1.6;margin:8px 0}.slide-text-line:first-child{color:#111827;font-size:24px;font-weight:700;letter-spacing:-.02em}.slide-empty{color:#94a3b8;font-style:italic}.slide-thumbnails{flex-wrap:wrap;gap:6px;margin-top:20px}.slide-thumb,.slide-thumbnails{display:flex;justify-content:center}.slide-thumb{align-items:center;background:#1e293b;border:2px solid #334155;border-radius:var(--radius-sm);color:#94a3b8;cursor:pointer;font-size:11px;font-weight:600;height:28px;transition:all .2s ease;width:38px}.slide-thumb:hover{background:#312e81;border-color:var(--accent);color:#fff}.slide-thumb.active{background:var(--accent);border-color:var(--accent);box-shadow:0 0 8px #4f46e566;color:#fff}.text-viewer{background:#0f172a;border:1px solid #1e293b;border-radius:var(--radius-lg);max-height:600px;overflow-y:auto}.text-content{color:#e2e8f0;font-family:Consolas,Monaco,Courier New,monospace;font-size:13px;line-height:1.7;margin:0;padding:24px;white-space:pre-wrap;word-break:break-word}.content-fallback{align-items:center;color:var(--text-secondary);display:flex;flex-direction:column;height:350px;justify-content:center;padding:24px;text-align:center}.fallback-icon{font-size:64px;margin-bottom:20px;opacity:.6}.content-fallback h4{color:var(--text-primary);font-size:18px;font-weight:700;margin-bottom:8px}.content-fallback p{font-size:14px;line-height:1.5;margin-bottom:24px}.content-fallback .btn-primary{align-items:center;background:var(--accent);border:none;border-radius:var(--radius-md);color:#fff;cursor:pointer;display:inline-flex;font-size:14px;font-weight:600;gap:8px;padding:10px 24px;text-decoration:none;transition:all .25s ease}.content-fallback .btn-primary:hover{background:#4338ca;box-shadow:0 4px 12px #4f46e54d;transform:translateY(-1px)}.preview-loading{align-items:center;color:var(--text-secondary);display:flex;flex-direction:column;font-size:14px;font-weight:500;gap:12px;height:300px;justify-content:center}.spinner{animation:spin .8s linear infinite;border:3px solid var(--border);border-radius:50%;border-top-color:var(--primary);height:36px;width:36px}@media (max-width:768px){.content-viewer-container{border-radius:var(--radius-lg);flex-direction:column;height:auto}.content-sidebar{border-bottom:1px solid var(--border);border-right:none;max-height:150px;width:100%}.content-list{-webkit-overflow-scrolling:touch;display:flex;gap:8px;overflow-x:auto;padding:10px;scrollbar-width:none}.content-list::-webkit-scrollbar{display:none}.content-item{flex:0 0 auto;margin-bottom:0}.content-main{height:auto;min-height:300px}.content-display{padding:16px}.content-header{flex-direction:column;gap:8px}.slide-content{padding:24px}.docx-viewer{padding:20px}}@media (max-width:480px){.content-sidebar h4{font-size:12px;padding:12px 16px}.content-display h3{font-size:16px}.btn-download{font-size:12px;padding:8px 16px}}.assignment-submission-container{animation:fadeInUp .4s ease;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-xl);box-shadow:var(--shadow-sm);padding:24px}.assignment-card{margin:0 auto;max-width:640px}.assignment-header{align-items:flex-start;border-bottom:2px solid var(--border);display:flex;gap:16px;justify-content:space-between;margin-bottom:20px;padding-bottom:20px}.assignment-header h3{color:var(--text-primary);font-size:20px;font-weight:700;letter-spacing:-.02em;margin:0}.due-date{background:linear-gradient(135deg,#fffbeb,#fef3c7);border:1px solid #fde68a;border-radius:20px;color:#92400e;font-size:12px;font-weight:700;padding:6px 14px;white-space:nowrap}.assignment-description{background:linear-gradient(135deg,#eff6ff,#f0f4ff);border-left:4px solid var(--primary);border-radius:var(--radius-lg);color:var(--text-secondary);font-size:14px;line-height:1.7;margin-bottom:24px;padding:16px 20px}.submission-form{gap:24px}.form-group,.submission-form{display:flex;flex-direction:column}.form-group{gap:10px}.form-group label{color:var(--text-primary);font-size:14px;font-weight:600;letter-spacing:-.01em}.file-upload{position:relative}.file-upload input{display:none}.file-label{align-items:center;background:#f8fafc;background:var(--bg-secondary,#f8fafc);border:2px dashed #cbd5e1;border-radius:var(--radius-lg);cursor:pointer;display:flex;flex-direction:column;gap:12px;justify-content:center;padding:44px 24px;text-align:center;transition:all .3s cubic-bezier(.4,0,.2,1)}.file-label:hover{background:#eff6ff;border-color:var(--primary);box-shadow:0 4px 16px #1e3a8a14;transform:translateY(-2px)}.file-label.has-file{background:#f0fdf4;border-color:var(--success);border-style:solid}.file-icon,.upload-icon{font-size:36px}.file-icon{color:var(--success)}.file-name{color:var(--text-primary);font-size:14px;font-weight:600}.file-hint{color:#9ca3af;color:var(--text-muted,#9ca3af);font-size:12px}.file-label span:first-child{color:var(--text-secondary);display:block;font-size:14px;font-weight:600}.submission-status{margin-bottom:24px}.status-card{background:linear-gradient(135deg,#f0fdf4,#ecfdf5);border:1px solid #bbf7d0;border-radius:var(--radius-xl);padding:24px}.status-header{margin-bottom:16px}.status-badge{font-size:12px;gap:6px;letter-spacing:.03em;padding:6px 14px}.status-submitted{background:#dcfce7;color:var(--success)}.submission-details{margin-bottom:16px}.detail-item{align-items:center;border-bottom:1px solid #dcfce7;display:flex;font-size:14px;justify-content:space-between;padding:10px 0}.detail-item:last-of-type{border-bottom:none}.detail-item .label{color:var(--text-primary);font-size:13px;font-weight:600}.detail-item .value{color:var(--text-secondary);font-weight:500}.feedback-section{background:var(--surface);border-left:4px solid var(--primary);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);margin-top:16px;padding:16px 20px}.feedback-section h4{color:var(--text-primary);font-size:14px;font-weight:700;margin:0 0 10px}.feedback-section p{color:var(--text-secondary);font-size:13px;line-height:1.7;margin:0}.evaluation-pending{background:linear-gradient(135deg,#dbeafe,#eff6ff);border:1px solid #93c5fd;border-radius:var(--radius-lg);margin-top:12px;padding:14px;text-align:center}.badge-info{align-items:center;color:#0369a1;display:inline-flex;font-size:13px;font-weight:600;gap:6px}.submission-actions{display:flex;gap:12px;margin-top:16px}.btn-primary,.btn-secondary{padding:12px 24px}.btn-primary{width:100%}.btn-primary:disabled{background:#cbd5e1;box-shadow:none;cursor:not-allowed;opacity:.6}.btn-secondary{align-items:center;border:2px solid var(--primary);color:var(--primary);display:inline-flex;flex:1 1;gap:6px;justify-content:center;text-decoration:none}.btn-secondary:hover{background:#eff6ff;box-shadow:0 2px 8px #1e3a8a1a;transform:translateY(-1px)}.assignment-loader,.no-assignment{background:#f8fafc;background:var(--bg-secondary,#f8fafc);border:1px dashed var(--border);border-radius:var(--radius-lg);color:var(--text-secondary);padding:48px;text-align:center}.assignment-loader{align-items:center;display:flex;flex-direction:column;gap:12px;height:200px;justify-content:center}.assignment-loader:before{animation:spin .8s linear infinite;border:3px solid var(--border);border-radius:50%;border-top-color:var(--primary);content:"";height:32px;width:32px}.toast{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);gap:10px}.toast-close{margin-left:12px}@media (max-width:768px){.assignment-submission-container{border-radius:var(--radius-lg);padding:16px}.assignment-card{max-width:100%}.file-label{padding:32px 20px}.assignment-header{gap:10px}.assignment-header,.submission-actions{flex-direction:column}.btn-secondary{flex:1 1;width:100%}}@media (max-width:480px){.assignment-submission-container{padding:12px}.assignment-header h3{font-size:18px}.assignment-description{font-size:13px;padding:12px 16px}.status-card{padding:16px}}.test-container{animation:fadeInUp .4s ease;border:1px solid var(--border);border-radius:var(--radius-xl);box-shadow:var(--shadow-sm);padding:24px}.test-container,.test-interface{background:var(--surface)}.test-header{align-items:center;border-bottom:2px solid var(--border);display:flex;gap:16px;justify-content:space-between;margin-bottom:24px;padding:20px 24px}.test-title h3{color:var(--text-primary);letter-spacing:-.01em;margin:0}.test-title h3,.timer{font-size:18px;font-weight:700}.timer{font-feature-settings:"tnum";background:#dbeafe;border:1px solid #93c5fd;border-radius:var(--radius-md);color:var(--primary);font-variant-numeric:tabular-nums;letter-spacing:.02em;padding:8px 18px}.timer.warning{animation:pulse 1s infinite;background:#fee2e2;border-color:#fecaca;color:var(--danger)}.test-progress{margin-bottom:28px}.progress-bar{background:var(--border);border-radius:4px;height:8px;margin-bottom:10px;overflow:hidden;width:100%}.progress-fill{background:linear-gradient(90deg,var(--primary) 0,var(--accent) 100%);border-radius:4px;height:100%;transition:width .4s cubic-bezier(.4,0,.2,1)}.progress-text{color:var(--text-secondary);font-size:12px;font-weight:500}.question-area{background:#f8fafc;background:var(--bg-secondary,#f8fafc);border:1px solid var(--border);border-radius:var(--radius-xl);margin-bottom:28px;padding:24px}.question-text{color:var(--text-primary);font-size:16px;font-weight:600;letter-spacing:-.01em;line-height:1.7;margin:0 0 24px}.options-container{display:flex;flex-direction:column;gap:12px}.option-label{align-items:flex-start;background:var(--surface);border:2px solid var(--border);border-radius:var(--radius-lg);cursor:pointer;display:flex;gap:14px;padding:14px 16px;transition:all .25s cubic-bezier(.4,0,.2,1)}.option-label:hover{background:#eff6ff;border-color:var(--primary);transform:translateX(4px)}.option-label input{accent-color:var(--primary);cursor:pointer;height:18px;margin-top:2px;width:18px}.option-label input:checked+.option-text{color:var(--primary);font-weight:600}.option-label:has(input:checked){background:#dbeafe;border-color:var(--primary);box-shadow:0 2px 8px #1e3a8a1a}.option-text{color:var(--text-secondary);flex:1 1;font-size:14px;line-height:1.5}.test-navigation{align-items:center;background:#f8fafc;background:var(--bg-secondary,#f8fafc);border-radius:0 0 var(--radius-xl) var(--radius-xl);border-top:1px solid var(--border);display:flex;flex-wrap:wrap;gap:16px;padding:20px 24px}.question-counter{flex:1 1;flex-wrap:wrap;gap:6px}.counter-btn,.question-counter{display:flex;justify-content:center}.counter-btn{align-items:center;background:var(--surface);border:2px solid var(--border);border-radius:var(--radius-md);color:var(--text-secondary);cursor:pointer;font-size:13px;font-weight:600;height:36px;transition:all .25s ease;width:36px}.counter-btn:hover{transform:translateY(-1px)}.counter-btn.answered,.counter-btn:hover{border-color:var(--primary);color:var(--primary)}.counter-btn.answered{background:#dbeafe}.counter-btn.current{background:var(--primary);border-color:var(--primary);box-shadow:0 2px 8px #1e3a8a4d;color:#fff}.btn-primary,.btn-secondary{border:none;border-radius:var(--radius-md);cursor:pointer;font-size:14px;font-weight:600;letter-spacing:-.01em;padding:10px 22px;transition:all .25s cubic-bezier(.4,0,.2,1)}.btn-primary{background:var(--primary);box-shadow:0 2px 8px #1e3a8a33;color:#fff}.btn-primary:hover:not(:disabled){background:#1e3a8a;box-shadow:0 4px 16px #1e3a8a4d;transform:translateY(-1px)}.btn-secondary{background:var(--surface);border:2px solid var(--border);color:var(--text-secondary)}.btn-secondary:hover:not(:disabled){background:#f8fafc;background:var(--bg-secondary,#f8fafc);border-color:var(--primary);color:var(--primary)}.btn-primary:disabled,.btn-secondary:disabled{box-shadow:none;cursor:not-allowed;opacity:.5}.test-start-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-xl);box-shadow:var(--shadow-md);margin:32px auto;max-width:520px;padding:36px;text-align:center}.test-start-card h3{color:var(--text-primary);font-size:22px;font-weight:700;letter-spacing:-.02em;margin:0 0 32px}.test-info{display:flex;gap:12px;justify-content:space-around;margin-bottom:32px}.info-item{align-items:center;background:#f8fafc;background:var(--bg-secondary,#f8fafc);border:1px solid var(--border);border-radius:var(--radius-lg);display:flex;flex:1 1;flex-direction:column;gap:8px;padding:16px 12px;transition:all .2s ease}.info-item:hover{background:#eff6ff;border-color:var(--primary)}.info-item .icon{font-size:28px}.info-item span:last-child{color:var(--text-secondary);font-size:13px;font-weight:600}.test-rules{background:linear-gradient(135deg,#fffbeb,#fef3c7);border-left:4px solid var(--warning);border-radius:var(--radius-lg);margin-bottom:24px;padding:20px 24px;text-align:left}.test-rules h4{color:#92400e;font-size:14px;font-weight:700;margin:0 0 10px}.test-rules ul{color:#b45309;font-size:13px;line-height:1.8;margin:0;padding-left:20px}.btn-start{background:linear-gradient(135deg,var(--primary) 0,var(--accent) 100%);box-shadow:0 4px 16px #1e3a8a40;font-size:15px;padding:14px;width:100%}.btn-start:hover:not(:disabled){box-shadow:0 6px 24px #1e3a8a59;transform:translateY(-2px)}.test-result{background:var(--surface);border:2px solid var(--border);border-radius:var(--radius-xl);box-shadow:var(--shadow-md);margin:32px auto;max-width:520px;padding:36px}.test-result.test-passed{background:linear-gradient(135deg,#f0fdf4,#ecfdf5);border-color:#bbf7d0}.test-result.test-failed{background:linear-gradient(135deg,#fef2f2,#fff1f2);border-color:#fecaca}.result-header{margin-bottom:32px;text-align:center}.result-header h2{color:var(--text-primary);font-size:24px;font-weight:700;letter-spacing:-.02em;margin:0}.result-stats{grid-gap:12px;display:grid;gap:12px;grid-template-columns:repeat(3,1fr);margin-bottom:28px}.stat{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:16px;text-align:center;transition:all .2s ease}.stat:hover{box-shadow:var(--shadow-sm);transform:translateY(-2px)}.stat-label{color:#9ca3af;color:var(--text-muted,#9ca3af);font-size:11px;font-weight:600;letter-spacing:.05em;margin-bottom:8px;text-transform:uppercase}.stat-value{color:var(--text-primary);font-size:22px;font-weight:700}.stat-value.status-passed{color:var(--success)}.stat-value.status-failed{color:var(--danger)}.btn-retry{font-size:15px;padding:14px;width:100%}.test-gate-card{background:linear-gradient(135deg,#fef2f2,#fff1f2);border:2px solid #fecaca;border-radius:var(--radius-xl);box-shadow:var(--shadow-md);margin:32px auto;max-width:520px;padding:36px;text-align:center}.test-gate-card h3{color:var(--danger);font-size:20px;font-weight:700;margin:0 0 16px}.test-gate-card p{color:#991b1b;font-size:14px;line-height:1.5;margin:0 0 12px}.cooldown-time{color:#7f1d1d;font-size:16px;font-weight:700;margin-top:16px!important}.cooldown-notice{background:linear-gradient(135deg,#fffbeb,#fef3c7);border:1px solid #fbbf24;color:#92400e;font-size:14px;font-weight:500;margin-top:16px;padding:16px 20px}.cooldown-notice,.no-test,.test-loader{border-radius:var(--radius-lg);text-align:center}.no-test,.test-loader{background:#f8fafc;background:var(--bg-secondary,#f8fafc);border:1px dashed var(--border);color:var(--text-secondary);padding:48px}.test-loader{align-items:center;display:flex;flex-direction:column;gap:12px;height:200px;justify-content:center}.test-loader:before{animation:spin .8s linear infinite;border:3px solid var(--border);border-radius:50%;border-top-color:var(--primary);content:"";height:32px;width:32px}.toast{align-items:center;animation:slideUp .35s cubic-bezier(.4,0,.2,1);border-radius:var(--radius-lg);bottom:24px;box-shadow:0 8px 32px #00000026;display:flex;font-size:14px;font-weight:500;gap:12px;justify-content:space-between;max-width:400px;padding:16px 20px;position:fixed;right:24px;z-index:1000}.toast-success{background:linear-gradient(135deg,#dcfce7,#f0fdf4);border:1px solid #bbf7d0;color:var(--success)}.toast-error{background:linear-gradient(135deg,#fee2e2,#fef2f2);border:1px solid #fecaca;color:var(--danger)}.toast-info{background:linear-gradient(135deg,#dbeafe,#eff6ff);border:1px solid #93c5fd;color:#0369a1}.toast-close{background:none;border:none;color:inherit;cursor:pointer;font-size:18px;margin-left:8px;opacity:.7;padding:0;transition:opacity .2s ease}.toast-close:hover{opacity:1}@media (max-width:768px){.test-container{border-radius:var(--radius-lg);padding:16px}.test-header{gap:12px;padding:16px}.test-header,.test-info{flex-direction:column}.result-stats{grid-template-columns:1fr}.test-navigation{flex-direction:column;gap:12px;padding:16px}.question-counter{width:100%}.test-gate-card,.test-result,.test-start-card{margin:16px auto;max-width:100%;padding:24px}.question-area{padding:16px}}@media (max-width:480px){.timer{font-size:16px;padding:6px 14px}.counter-btn{font-size:12px;height:32px;width:32px}.test-start-card h3{font-size:18px}}.week-learning-view{grid-gap:24px;animation:fadeIn .4s ease;background:#0000;display:grid;gap:24px;grid-template-columns:280px 1fr;min-height:calc(100vh - 80px);padding:0}.week-navigation{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-xl);box-shadow:var(--shadow-sm);height:-webkit-fit-content;height:fit-content;padding:24px;position:-webkit-sticky;position:sticky;top:90px;transition:box-shadow .3s ease}.week-navigation:hover{box-shadow:var(--shadow-md)}.week-nav-header{align-items:center;border-bottom:2px solid var(--border);display:flex;justify-content:space-between;margin-bottom:20px;padding-bottom:16px}.week-nav-header h3{color:var(--text-primary);font-size:15px;font-weight:700;letter-spacing:-.01em;margin:0}.week-counter{background:#dbeafe;background:var(--primary-light,#dbeafe);border-radius:20px;color:var(--primary);font-size:12px;font-weight:700;letter-spacing:.02em;padding:4px 12px}.week-selector{grid-gap:8px;display:grid;gap:8px;grid-template-columns:repeat(3,1fr);margin-bottom:20px}.week-nav-item{align-items:center;background:var(--surface);border:2px solid var(--border);border-radius:var(--radius-md);color:var(--text-secondary);cursor:pointer;display:flex;flex-direction:column;font-size:11px;font-weight:600;gap:3px;padding:10px 6px;position:relative;transition:all .25s cubic-bezier(.4,0,.2,1)}.week-nav-item:hover:not(:disabled){background:#eff6ff;background:var(--primary-light,#eff6ff);border-color:var(--primary);box-shadow:0 2px 8px #1e3a8a1a;color:var(--primary);transform:translateY(-1px)}.week-nav-item.active{background:var(--primary);border-color:var(--primary);box-shadow:0 4px 12px #1e3a8a4d;color:#fff;transform:translateY(-1px)}.week-nav-item:disabled{cursor:not-allowed;opacity:.5}.week-nav-item.week-completed{background:#f0fdf4;border-color:#bbf7d0;color:var(--success)}.week-nav-item.week-completed:after{color:var(--success);content:"\2713";font-size:8px;font-weight:800;position:absolute;right:4px;top:2px}.week-nav-item.week-current{background:#eef2ff;border-color:var(--accent);box-shadow:0 0 0 3px #4f46e526;color:var(--accent)}.week-nav-item.week-locked{background:#f1f5f9;background:var(--bg-secondary,#f1f5f9);opacity:.45}.week-indicator{font-size:18px;line-height:1}.week-num{font-size:10px;letter-spacing:.03em;text-transform:uppercase}.week-details{border-top:1px solid var(--border);margin-top:20px;padding-top:20px}.week-info-card{background:linear-gradient(135deg,#eff6ff,#f0f4ff);border-left:4px solid var(--primary);border-radius:var(--radius-lg);padding:16px;transition:transform .2s ease}.week-info-card:hover{transform:translateX(2px)}.week-info-card h4{color:var(--text-primary);font-size:13px;font-weight:700;margin:0 0 8px}.week-info-card p{color:var(--text-secondary);font-size:12px;line-height:1.6;margin:0 0 12px}.status-badge{align-items:center;border-radius:20px;display:inline-flex;font-size:11px;font-weight:700;gap:4px;letter-spacing:.02em;padding:4px 12px;text-transform:uppercase}.status-completed{background:#dcfce7;color:var(--success)}.status-current{background:#dbeafe;color:var(--primary)}.status-locked{background:#fee2e2;color:var(--danger)}.learning-content{animation:fadeInUp .4s ease;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-xl);box-shadow:var(--shadow-sm);min-height:600px;padding:28px}.week-locked-message{color:var(--text-secondary);padding:80px 24px;text-align:center}.locked-icon{filter:grayscale(.3);font-size:72px;margin-bottom:20px;opacity:.6}.week-locked-message h3{color:var(--text-primary);font-size:24px;font-weight:700;letter-spacing:-.02em;margin:0 0 10px}.week-locked-message p{color:var(--text-secondary);font-size:15px;line-height:1.6;margin:0 auto 32px;max-width:420px}.unlock-requirements{background:linear-gradient(135deg,#fffbeb,#fef3c7);border-left:4px solid var(--warning);border-radius:var(--radius-lg);box-shadow:0 2px 8px #f59e0b1a;margin:0 auto;max-width:420px;padding:20px 24px;text-align:left}.unlock-requirements h4{color:#92400e;font-size:14px;font-weight:700;margin:0 0 12px}.unlock-requirements ul{color:#b45309;font-size:13px;line-height:2;margin:0;padding-left:20px}.week-content-tabs{display:flex;flex-direction:column;gap:24px}.content-tabs-header{background:#0000;border-bottom:2px solid var(--border);display:flex;gap:4px;padding-bottom:0}.tab-btn{background:none;border:none;border-bottom:3px solid #0000;border-radius:var(--radius-md) var(--radius-md) 0 0;color:#9ca3af;color:var(--text-muted,#9ca3af);cursor:pointer;font-size:14px;font-weight:600;letter-spacing:-.01em;margin-bottom:-2px;padding:12px 24px;position:relative;transition:all .25s ease}.tab-btn:hover{background:#1e3a8a0a;color:var(--primary)}.tab-btn.active{background:#1e3a8a0f;border-bottom-color:var(--primary);color:var(--primary);font-weight:700}.tab-content{animation:fadeIn .3s ease;min-height:500px}.activity-panel{grid-gap:20px;border-top:2px solid var(--border);display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));margin-top:32px;padding-top:28px}.activity-card{background:#f8fafc;background:var(--bg-secondary,#f8fafc);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;padding:0;transition:all .3s ease}.activity-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}.progress-summary{background:linear-gradient(135deg,var(--primary) 0,var(--accent) 60%,#7c3aed 100%);border-radius:var(--radius-xl);box-shadow:0 8px 32px #1e3a8a40;color:#fff;grid-column:1/-1;margin-top:24px;overflow:hidden;padding:28px 32px;position:relative;text-align:center}.progress-summary:before{background:radial-gradient(circle,#ffffff14 0,#0000 70%);border-radius:50%;content:"";height:300px;position:absolute;right:-20%;top:-50%;width:300px}.progress-summary:after{background:radial-gradient(circle,#ffffff0d 0,#0000 70%);border-radius:50%;bottom:-30%;content:"";height:200px;left:-10%;position:absolute;width:200px}.progress-summary h4{font-size:17px;font-weight:700;letter-spacing:-.01em;margin:0 0 16px;position:relative;z-index:1}.progress-ring-wrapper{display:flex;justify-content:center;margin:12px 0;position:relative;z-index:1}.progress-ring-wrapper .progress-ring-container span{color:#fff!important;font-weight:700!important}.progress-ring-wrapper svg circle:first-child{stroke:#ffffff40!important}.progress-ring-wrapper svg circle:last-child{stroke:#fff!important;filter:drop-shadow(0 0 6px rgba(255,255,255,.4))}.progress-label-text{font-size:14px;font-weight:600;opacity:.95;position:relative;z-index:1}.loading{align-items:center;color:var(--text-secondary);display:flex;flex-direction:column;font-size:15px;font-weight:500;gap:12px;height:400px;justify-content:center}.loading:before{animation:spin .8s linear infinite;border:3px solid var(--border);border-radius:50%;border-top-color:var(--primary);content:"";height:36px;width:36px}@keyframes spin{to{transform:rotate(1turn)}}@media (max-width:1024px){.week-learning-view{gap:16px;grid-template-columns:1fr}.week-navigation{padding:20px;position:static}.week-selector{grid-template-columns:repeat(5,1fr)}}@media (max-width:768px){.week-learning-view{gap:12px;padding:0}.week-navigation{border-radius:var(--radius-lg);padding:16px}.week-selector{gap:6px;grid-template-columns:repeat(4,1fr)}.week-nav-item{border-radius:var(--radius-sm);font-size:10px;padding:8px 4px}.week-indicator{font-size:15px}.learning-content{border-radius:var(--radius-lg);min-height:400px;padding:16px}.content-tabs-header{-webkit-overflow-scrolling:touch;gap:0;overflow-x:auto;scrollbar-width:none}.content-tabs-header::-webkit-scrollbar{display:none}.tab-btn{font-size:13px;padding:10px 16px;white-space:nowrap}.activity-panel{gap:12px;grid-template-columns:1fr}.progress-summary{border-radius:var(--radius-lg);padding:20px}}@media (max-width:480px){.week-selector{grid-template-columns:repeat(3,1fr)}.week-nav-header h3{font-size:14px}.tab-btn{font-size:12px;padding:8px 12px}}.student-messages-container{background:#fff;border-radius:12px;box-shadow:0 4px 20px #0000001a;display:flex;height:100vh;overflow:hidden}.student-messages-container .conversations-panel{background:#fafafa;border-right:1px solid #f0f0f0;display:flex;flex-direction:column;width:320px}.student-messages-container .panel-header{align-items:center;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;display:flex;justify-content:space-between;padding:1.5rem}.student-messages-container .panel-header h2{font-size:1.3rem;font-weight:600;margin:0}.student-messages-container .btn-new-conversation{align-items:center;background:#fff3;border:1px solid #ffffff4d;border-radius:50%;color:#fff;cursor:pointer;display:flex;font-size:1.2rem;height:36px;justify-content:center;transition:all .3s ease;width:36px}.student-messages-container .btn-new-conversation:hover{background:#ffffff4d;transform:scale(1.1)}.student-messages-container .new-conv-dialog{bottom:0;left:0;position:fixed;right:0;top:0;z-index:1000}.student-messages-container .dialog-overlay{background:#00000080;bottom:0;left:0;position:absolute;right:0;top:0}.student-messages-container .dialog-content{background:#fff;border-radius:12px;box-shadow:0 10px 40px #0003;left:50%;max-width:500px;min-width:400px;padding:2rem;position:absolute;top:50%;transform:translate(-50%,-50%);z-index:1001}.student-messages-container .dialog-content h3{color:#333;font-size:1.3rem;margin:0 0 1.5rem}.student-messages-container .form-group{margin-bottom:1.5rem}.student-messages-container .form-group label{color:#333;display:block;font-size:.95rem;font-weight:600;margin-bottom:.5rem}.student-messages-container .form-group input,.student-messages-container .form-group select{border:1px solid #e0e0e0;border-radius:8px;font-family:inherit;font-size:.95rem;padding:.75rem;transition:all .3s ease;width:100%}.student-messages-container .form-group input:focus,.student-messages-container .form-group select:focus{border-color:#667eea;box-shadow:0 0 0 3px #667eea1a;outline:none}.student-messages-container .dialog-buttons{display:flex;gap:1rem;justify-content:flex-end;margin-top:2rem}.student-messages-container .btn-cancel,.student-messages-container .btn-start{border:none;border-radius:8px;cursor:pointer;font-weight:600;padding:.75rem 1.5rem;transition:all .3s ease}.student-messages-container .btn-cancel{background:#f5f5f5;border:1px solid #ddd;color:#333}.student-messages-container .btn-cancel:hover{background:#eee}.student-messages-container .btn-start{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.student-messages-container .btn-start:hover{box-shadow:0 4px 12px #667eea4d;transform:translateY(-2px)}.student-messages-container .conversations-list{flex:1 1;overflow-y:auto;padding:.5rem}.student-messages-container .conversation-item{background:#fff;border:1px solid #0000;border-radius:8px;cursor:pointer;display:flex;gap:1rem;margin-bottom:.5rem;padding:1rem;position:relative;transition:all .3s ease}.student-messages-container .conversation-item:hover{background:#f5f5f5;border-color:#e0e0e0}.student-messages-container .conversation-item.active{background:#fff;border-color:#667eea;box-shadow:0 0 0 2px #667eea1a}.student-messages-container .conversation-item.unread{background:#f0f4ff;border-left:3px solid #667eea}.student-messages-container .conversation-avatar{align-items:center;background:linear-gradient(135deg,#667eea,#764ba2);border-radius:50%;color:#fff;display:flex;flex-shrink:0;font-size:1.2rem;font-weight:600;height:48px;justify-content:center;width:48px}.student-messages-container .conversation-info{flex:1 1;min-width:0}.student-messages-container .info-header{align-items:baseline;display:flex;gap:.5rem;justify-content:space-between;margin-bottom:.3rem}.student-messages-container .info-header h4{color:#333;font-size:.95rem;font-weight:600;margin:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.student-messages-container .timestamp{color:#999;font-size:.8rem;white-space:nowrap}.student-messages-container .course-badge{background:#e8f0fe;border-radius:4px;color:#1967d2;display:inline-block;font-size:.75rem;font-weight:500;margin-bottom:.3rem;overflow:hidden;padding:.25rem .5rem;text-overflow:ellipsis;white-space:nowrap}.student-messages-container .last-message{color:#999;font-size:.85rem;margin:.3rem 0 0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.student-messages-container .unread-badge{align-items:center;background:#ff4757;border-radius:50%;color:#fff;display:flex;font-size:.75rem;font-weight:600;height:24px;justify-content:center;position:absolute;right:.5rem;top:.5rem;width:24px}.student-messages-container .empty-conversations{align-items:center;color:#999;display:flex;flex:1 1;flex-direction:column;justify-content:center;padding:1rem;text-align:center}.student-messages-container .empty-icon{font-size:2.5rem;margin-bottom:1rem}.student-messages-container .empty-hint{color:#ccc;font-size:.9rem;margin:.5rem 0 0}.student-messages-container .chat-panel{background:#fff;display:flex;flex:1 1;flex-direction:column}.student-messages-container .chat-header{background:linear-gradient(135deg,#667eea,#764ba2);border-bottom:1px solid #f0f0f0;color:#fff;padding:1.5rem}.student-messages-container .header-info h3{font-size:1.1rem;font-weight:600;margin:0 0 .3rem}.student-messages-container .header-info p{font-size:.9rem;margin:0;opacity:.9}.student-messages-container .messages-area{background:#fff;display:flex;flex:1 1;flex-direction:column;gap:.75rem;overflow-y:auto;padding:1.5rem}.student-messages-container .message-bubble{align-items:flex-end;animation:slideUp .3s ease;display:flex;gap:.5rem}@keyframes slideUp{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.student-messages-container .message-bubble.sent{justify-content:flex-end}.student-messages-container .message-content{word-wrap:break-word;border-radius:12px;max-width:60%;padding:.8rem 1rem}.student-messages-container .message-bubble.sent .message-content{background:linear-gradient(135deg,#667eea,#764ba2);border-bottom-right-radius:4px;color:#fff}.student-messages-container .message-bubble.received .message-content{background:#f0f0f0;border-bottom-left-radius:4px;color:#333}.student-messages-container .message-content p{line-height:1.4;margin:0 0 .3rem}.student-messages-container .message-time{display:block;font-size:.75rem;margin-top:.25rem;opacity:.7}.student-messages-container .message-bubble.sent .message-time{text-align:right}.student-messages-container .message-status{display:block;font-size:.72rem;margin-top:.15rem;opacity:.95;text-align:right}.student-messages-container .message-status.delivered{color:#ffffffd9}.student-messages-container .message-status.seen{color:#d2ffd9;font-weight:600}.student-messages-container .empty-chat{align-items:center;color:#ccc;display:flex;flex:1 1;flex-direction:column;justify-content:center}.student-messages-container .empty-chat .empty-icon{font-size:3rem;margin-bottom:1rem}.student-messages-container .empty-chat h4{color:#999;margin:1rem 0 .5rem}.student-messages-container .empty-chat p{color:#ccc;font-size:.9rem;margin:0}.student-messages-container .message-input-form{background:#fff;border-top:1px solid #f0f0f0;display:flex;gap:.75rem;padding:1rem}.student-messages-container .message-input{border:1px solid #e0e0e0;border-radius:24px;flex:1 1;font-family:inherit;font-size:.95rem;padding:.75rem 1rem;transition:all .3s ease}.student-messages-container .message-input:focus{border-color:#667eea;box-shadow:0 0 0 3px #667eea1a;outline:none}.student-messages-container .message-input:disabled{background:#f5f5f5;cursor:not-allowed}.student-messages-container .btn-send{background:linear-gradient(135deg,#667eea,#764ba2);border:none;border-radius:24px;color:#fff;cursor:pointer;font-weight:600;padding:.75rem 1.5rem;transition:all .3s ease}.student-messages-container .btn-send:hover:not(:disabled){box-shadow:0 4px 12px #667eea4d;transform:translateY(-2px)}.student-messages-container .btn-send:disabled{cursor:not-allowed;opacity:.5}.student-messages-container .btn-voice{background:#f3f4f6;border:1px solid #d1d5db;border-radius:24px;color:#1f2937;cursor:pointer;font-weight:600;padding:.75rem 1rem;transition:all .2s ease}.student-messages-container .btn-voice:hover:not(:disabled){background:#e5e7eb}.student-messages-container .btn-voice.listening{background:#fee2e2;border-color:#ef4444;color:#991b1b}.student-messages-container .btn-voice:disabled{cursor:not-allowed;opacity:.5}.student-messages-container .no-conversation{align-items:center;background:#fff;color:#ccc;display:flex;flex:1 1;flex-direction:column;justify-content:center}.student-messages-container .no-conv-icon{font-size:3rem;margin-bottom:1rem}.student-messages-container .no-conversation h3{color:#999;margin:1rem 0 .5rem}.student-messages-container .no-conversation p{color:#ccc;margin:0 0 1.5rem}.student-messages-container .btn-new{background:linear-gradient(135deg,#667eea,#764ba2);border:none;border-radius:8px;color:#fff;cursor:pointer;font-weight:600;padding:.75rem 1.5rem;transition:all .3s ease}.student-messages-container .btn-new:hover{box-shadow:0 4px 12px #667eea4d;transform:translateY(-2px)}.student-messages-container .error-toast{align-items:center;animation:slideUp .3s ease;background:#f8d7da;border-left:3px solid #f5534d;border-radius:8px;bottom:2rem;box-shadow:0 4px 12px #00000026;color:#721c24;display:flex;gap:1rem;justify-content:space-between;padding:1rem;position:fixed;right:2rem;z-index:1000}.student-messages-container .error-toast button{background:none;border:none;color:#721c24;cursor:pointer;font-size:1.5rem}.student-messages-container .loading-skeleton{flex:1 1;padding:1rem}.student-messages-container .skeleton-item{animation:loading 1.5s infinite;background:linear-gradient(90deg,#f0f0f0,#f5f5f5 50%,#f0f0f0);background-size:200% 100%;border-radius:8px;height:80px;margin-bottom:1rem}@keyframes loading{0%{background-position:200% 0}to{background-position:-200% 0}}@media (max-width:768px){.student-messages-container{flex-direction:column-reverse}.student-messages-container .conversations-panel{border-right:none;border-top:1px solid #f0f0f0;max-height:300px;width:100%}.student-messages-container .chat-panel{height:calc(100vh - 360px)}.student-messages-container .message-content{max-width:80%}.student-messages-container .dialog-content{max-width:90%;min-width:auto;padding:1.5rem}}@media (max-width:600px){.student-messages-container .message-content{max-width:90%}.student-messages-container .dialog-buttons{flex-direction:column-reverse}.student-messages-container .btn-cancel,.student-messages-container .btn-start{width:100%}}.student-comm-wrapper{background:#f5f7fa;border-radius:8px;box-shadow:0 2px 8px #0000001a;display:flex;flex-direction:column;height:100%;overflow:hidden}.comm-tabs{background:#fff;border-bottom:2px solid #e0e0e0;display:flex;gap:0;padding:0}.comm-tab{background:#0000;border:none;border-bottom:3px solid #0000;color:#666;cursor:pointer;flex:1 1;font-size:14px;font-weight:600;padding:16px 20px;text-align:center;transition:all .3s ease}.comm-tab:hover{background:#f9f9f9;color:#333}.comm-tab.active{background:#f8f9ff;border-bottom-color:#667eea;color:#667eea}.comm-content{flex:1 1;overflow-y:auto;padding:20px}@media (max-width:768px){.comm-tabs{flex-wrap:wrap}.comm-tab{flex:1 1 100%;font-size:12px;padding:12px 10px}.comm-content{padding:15px}}.edit-course-fullscreen{background:#fff!important;border:none!important;bottom:auto!important;box-sizing:border-box!important;display:flex!important;flex-direction:column!important;height:auto!important;left:auto!important;margin:0!important;max-width:none!important;min-height:auto;overflow:visible!important;padding:0!important;position:relative!important;right:auto!important;top:auto!important;width:100%!important;z-index:auto!important}.edit-course-header{align-items:center;background:linear-gradient(135deg,#f0f9ff,#e0f2fe);border-bottom:2px solid #0ea5e9;display:flex;flex-shrink:0;justify-content:space-between;padding:20px 30px}.edit-course-header-left{display:flex;flex-direction:column;gap:8px}.edit-course-back-btn{background:linear-gradient(135deg,#3b82f6,#1d4ed8);border:none;border-radius:8px;color:#fff;cursor:pointer;font-weight:600;padding:10px 16px;text-align:left;transition:all .2s;width:200px}.edit-course-back-btn:hover{background:linear-gradient(135deg,#1d4ed8,#1e3a8a);transform:translateX(-2px)}.edit-course-header-left h1{color:#0c4a6e;font-size:28px;font-weight:800;margin:0}.edit-course-header-left p{color:#0369a1;font-size:14px;margin:0}.edit-course-header-right{background:#ffffffb3;border-radius:8px;color:#0c4a6e;font-size:18px;font-weight:700;padding:10px 20px}.edit-course-container{display:flex;flex:1 1;flex-direction:column;overflow:hidden;padding:20px 30px}.edit-course-breadcrumb{background:#f8fafc;border-bottom:1px solid #e2e8f0;color:#64748b;font-size:13px;margin-bottom:0;padding:12px 20px}.edit-course-breadcrumb a{color:#4f46e5;text-decoration:none}.wizard-stepper{grid-gap:8px;display:grid;gap:8px;grid-template-columns:repeat(4,minmax(120px,1fr));margin-bottom:10px;width:100%}.wizard-step{align-items:center;background:#fff;border:1px solid #d1d5db;border-radius:10px;color:#334155;cursor:pointer;display:flex;font-weight:600;gap:8px;padding:10px;text-align:left;transition:all .2s ease}.wizard-step span{align-items:center;border:1px solid #cbd5e1;border-radius:50%;display:inline-flex;font-size:12px;height:22px;justify-content:center;width:22px}.wizard-step.active{background:#eef2ff;border-color:#4f46e5;color:#312e81}.wizard-step.done{border-color:#10b981;color:#065f46}.wizard-progress{background:#e2e8f0;border-radius:0;height:8px;margin:0 20px;overflow:hidden}.wizard-progress-fill{background:linear-gradient(90deg,#6366f1,#10b981);height:100%;transition:width .2s ease}.edit-course-shell{background:linear-gradient(180deg,#fff,#f8fafc);border-radius:0;flex:1 1;margin:0;overflow-y:auto;padding:20px 0;width:100%}.edit-course-grid{grid-gap:16px;display:grid;gap:16px;grid-template-columns:1fr;max-width:100%;padding:0 30px}.edit-course-field{display:flex;flex-direction:column;gap:8px}.edit-course-field.full{grid-column:1/-1}.edit-course-field label{color:#1e293b;font-size:14px;font-weight:700}.edit-course-field input,.edit-course-field select,.edit-course-field textarea,.line-editor input,.line-editor select,.line-editor textarea{background:#fff;border:1px solid #d1d5db;border-radius:10px;color:#0f172a;font-size:14px;padding:10px 12px}.edit-course-field input:focus,.edit-course-field select:focus,.edit-course-field textarea:focus,.line-editor input:focus,.line-editor select:focus,.line-editor textarea:focus{border-color:#6366f1;box-shadow:0 0 0 3px #6366f126;outline:none}.edit-course-field small,.line-editor small{color:#64748b;font-size:12px}.wizard-inline-actions{display:flex;justify-content:flex-end;margin-bottom:10px}.week-list{grid-gap:16px;display:grid;gap:16px;padding:0}.week-card{background:#fff;border:2px solid #e2e8f0;border-radius:12px;box-shadow:0 1px 3px #0000000d;margin-bottom:12px;padding:16px}.week-card-head{align-items:center;display:flex;gap:8px;justify-content:space-between;margin-bottom:10px}.line-editor{grid-gap:8px;background:#f8fafc;border:1px solid #e2e8f0;border-radius:10px;display:grid;gap:8px;margin-bottom:8px;padding:10px}.line-editor-block{background:#f9fafb;border:1px solid #e5e7eb;border-radius:10px;margin-bottom:16px;padding:12px}.test-meta{grid-gap:10px;align-items:center;background:#f0f9ff;border-radius:8px;display:grid;gap:10px;grid-template-columns:1fr 140px auto auto;padding:10px}.question-editor{grid-gap:8px;background:#fafbfc;border:2px solid #cbd5e1;border-radius:8px;display:grid;gap:8px;margin-top:8px;padding:12px}.question-editor input[type=number],.question-editor input[type=text]{font-size:13px;padding:8px 10px}.question-editor input[placeholder*=Option]{background:#f3f4f6;border:1px solid #d1d5db;border-radius:6px;padding:8px 10px}.edit-course-actions{background:#f8fafc;border-top:1px solid #e2e8f0;display:flex;gap:10px;justify-content:flex-end;margin-top:20px;padding:20px}@media (max-width:1024px){.wizard-stepper{grid-template-columns:1fr 1fr}}.syllabus-builder{width:100%}.syl-setup{background:linear-gradient(180deg,#f8fbff,#eff6ff);border:2px dashed #dbeafe;border-radius:16px;padding:52px 24px 56px;text-align:center}.syl-setup-icon{color:#3b82f6;margin-bottom:16px}.syl-setup-title{color:#0f172a;font-size:22px;font-weight:700;letter-spacing:-.01em;margin:0 0 8px}.syl-setup-sub{color:#64748b;font-size:14px;line-height:1.6;margin:0 auto 28px;max-width:440px}.syl-setup-row{align-items:center;display:inline-flex;gap:12px}.syl-setup-input{background:#fff;border:2px solid #cbd5e1;border-radius:12px;color:#0f172a;font-family:inherit;font-size:18px;font-weight:700;padding:12px 16px;text-align:center;transition:border-color .15s;width:96px}.syl-setup-input:focus{border-color:#3b82f6;box-shadow:0 0 0 3px #3b82f626;outline:none}.syl-setup-input::placeholder{color:#94a3b8;font-weight:400}.syl-setup-btn{background:#1d4ed8;border:none;border-radius:12px;color:#fff;cursor:pointer;font-size:15px;font-weight:700;padding:12px 28px;transition:background .15s,box-shadow .15s}.syl-setup-btn:hover{background:#1e40af;box-shadow:0 4px 14px #1e40af40}.syl-detail-header{align-items:flex-start;display:flex;gap:16px;justify-content:space-between;margin-bottom:24px}.syl-heading{color:#0f172a;font-size:20px;font-weight:700;letter-spacing:-.01em;margin:0 0 6px}.syl-subheading{color:#64748b;font-size:13.5px;line-height:1.55;margin:0}.syl-reset-btn{align-items:center;background:#fff;border:1px solid #e2e8f0;border-radius:10px;color:#64748b;cursor:pointer;display:inline-flex;flex-shrink:0;font-size:13px;font-weight:600;gap:6px;padding:8px 16px;transition:all .15s;white-space:nowrap}.syl-reset-btn:hover{background:#fef2f2;border-color:#fecaca;color:#dc2626}.syl-reset-btn svg{flex-shrink:0}.unit-card-stack{display:flex;flex-direction:column;gap:16px;padding:20px;width:100%}.unit-card{background:#fff;border:1px solid #e2e8f0;border-radius:14px;overflow:hidden;padding:0;transition:border-color .15s,box-shadow .15s}.unit-card:hover{border-color:#bfdbfe;box-shadow:0 2px 12px #3b82f60f}.unit-card-header{align-items:center;background:#f0f7ff;border-bottom:1px solid #e2e8f0;display:flex;justify-content:space-between;padding:12px 20px}.unit-card-badge{background:#1d4ed8;border-radius:6px;color:#fff;display:inline-block;font-size:11.5px;font-weight:700;letter-spacing:.04em;padding:4px 12px;text-transform:uppercase}.unit-card-check{align-items:center;background:#059669;border-radius:50%;color:#fff;display:inline-flex;font-size:13px;font-weight:700;height:22px;justify-content:center;width:22px}.unit-card-fields{padding:20px}.unit-field{display:flex;flex-direction:column;gap:6px}.unit-field+.unit-field{margin-top:16px}.unit-field-label{color:#334155;font-size:13px;font-weight:600}.unit-field-label .req{color:#dc2626}.unit-input,.unit-textarea{background:#fff;border:1px solid #cbd5e1;border-radius:10px;box-sizing:border-box;color:#0f172a;font-family:inherit;font-size:14px;padding:10px 14px;transition:border-color .15s;width:100%}.unit-input:focus,.unit-textarea:focus{border-color:#3b82f6;box-shadow:0 0 0 3px #3b82f61f;outline:none}.unit-textarea{min-height:72px;resize:vertical}.syl-status{font-size:13px;font-weight:500;margin-top:20px}.syl-status-warn{background:#fffbeb;border:1px solid #fde68a;border-radius:10px;color:#b45309;display:block;padding:12px 16px}.syl-status-ok{background:#ecfdf5;border:1px solid #a7f3d0;border-radius:10px;color:#047857;display:block;padding:12px 16px}@media (max-width:768px){.edit-course-grid,.test-meta,.wizard-stepper{grid-template-columns:1fr}.edit-course-shell{max-height:none;min-height:auto;overflow-y:visible;padding:12px}}
/*# sourceMappingURL=main.b24873fb.css.map*/