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(max-width:480px){.login-card{width:100%;margin:16px;padding:28px}.tabs{flex-wrap:wrap}}.editor-layout{background:var(--bg-primary);flex-direction:column;height:100vh;display:flex;overflow:hidden}.editor-topbar{background:var(--bg-secondary);border-bottom:1px solid var(--border);z-index:30;justify-content:space-between;align-items:center;height:56px;min-height:56px;padding:0 20px;display:flex}.editor-topbar-title{letter-spacing:-.3px;font-size:16px;font-weight:700}.editor-topbar-divider{background:var(--border);width:1px;height:24px}.editor-body{flex:1;display:flex;overflow:hidden}.editor-sidebar{background:var(--bg-secondary);border-right:1px solid var(--border);flex-direction:column;width:300px;min-width:300px;display:flex}.editor-sidebar-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:16px 20px;display:flex}.editor-steps-list{flex:1;padding:8px;overflow-y:auto}.editor-step-item{border-radius:var(--radius-sm);cursor:pointer;border:1px solid #0000;margin-bottom:4px;padding:12px 14px;transition:all .15s}.editor-step-item:hover{background:var(--bg-card-hover)}.editor-step-item.active{background:var(--accent-light);border-color:var(--accent)}.editor-step-item-header{align-items:center;gap:10px;margin-bottom:6px;display:flex}.editor-step-badge{border-radius:6px;flex-shrink:0;justify-content:center;align-items:center;width:28px;height:28px;font-size:16px;display:flex}.editor-step-badge.material{background:#3b82f626}.editor-step-badge.assessment{background:#f59e0b26}.editor-step-item-title{white-space:nowrap;text-overflow:ellipsis;flex:1;font-size:13px;font-weight:600;overflow:hidden}.editor-step-item-actions{opacity:0;justify-content:flex-end;gap:4px;transition:opacity .15s;display:flex}.editor-step-item:hover .editor-step-item-actions,.editor-step-item.active .editor-step-item-actions{opacity:1}.editor-step-btn{background:var(--bg-input);width:24px;height:24px;color:var(--text-muted);cursor:pointer;border:none;border-radius:4px;justify-content:center;align-items:center;font-size:11px;transition:all .15s;display:flex}.editor-step-btn:hover{background:var(--border-light);color:var(--text-primary)}.editor-step-btn.danger:hover{color:var(--danger);background:#ef444433}.editor-step-btn:disabled{opacity:.3;cursor:not-allowed}.editor-sidebar-actions{border-top:1px solid var(--border);gap:8px;padding:12px;display:flex}.editor-main{flex-direction:column;flex:1;padding:28px;display:flex;overflow-y:auto}.editor-empty-state{color:var(--text-muted);flex-direction:column;flex:1;justify-content:center;align-items:center;display:flex}.editor-content-area{width:100%;max-width:860px;margin:0 auto}.editor-step-title-bar{margin-bottom:20px}.editor-step-type-label{text-transform:uppercase;letter-spacing:.5px;border-radius:20px;align-items:center;gap:6px;margin-bottom:8px;padding:4px 10px;font-size:12px;font-weight:600;display:inline-flex}.editor-step-type-label.material{color:#3b82f6;background:#3b82f626}.editor-step-type-label.assessment{color:#f59e0b;background:#f59e0b26}.editor-step-title-input{border:none;border-bottom:2px solid var(--border);width:100%;color:var(--text-primary);letter-spacing:-.5px;background:0 0;outline:none;padding:8px 0;font-family:Inter,sans-serif;font-size:24px;font-weight:800;transition:border-color .2s}.editor-step-title-input:focus{border-color:var(--accent)}.rich-editor-wrapper{border:1px solid var(--border);border-radius:var(--radius);background:var(--bg-card);overflow:hidden}.rich-editor-toolbar{background:var(--bg-secondary);border-bottom:1px solid var(--border);flex-wrap:wrap;align-items:center;gap:4px;padding:8px 12px;display:flex}.toolbar-group{align-items:center;gap:2px;display:flex}.toolbar-divider{background:var(--border);width:1px;height:24px;margin:0 6px}.toolbar-btn{width:32px;height:32px;color:var(--text-secondary);cursor:pointer;background:0 0;border:none;border-radius:6px;justify-content:center;align-items:center;font-size:14px;transition:all .15s;display:flex}.toolbar-btn:hover{background:var(--accent-light);color:var(--text-primary)}.toolbar-select{background:var(--bg-input);border:1px solid var(--border);color:var(--text-primary);cursor:pointer;border-radius:6px;outline:none;padding:4px 8px;font-size:12px}.rich-editor-content{min-height:400px;color:var(--text-primary);outline:none;padding:24px;font-size:15px;line-height:1.8}.rich-editor-content:empty:before{content:attr(data-placeholder);color:var(--text-muted);pointer-events:none}.rich-editor-content h1{letter-spacing:-.5px;margin:20px 0 12px;font-size:28px;font-weight:800}.rich-editor-content h2{margin:18px 0 10px;font-size:22px;font-weight:700}.rich-editor-content h3{margin:16px 0 8px;font-size:18px;font-weight:600}.rich-editor-content p{margin:8px 0}.rich-editor-content ul,.rich-editor-content ol{margin:8px 0;padding-left:24px}.rich-editor-content li{margin:4px 0}.rich-editor-content a{color:var(--accent);text-decoration:underline}.rich-editor-content table{border-collapse:collapse;width:100%;margin:12px 0}.rich-editor-content td,.rich-editor-content th{border:1px solid var(--border);padding:8px 12px}.rich-editor-content th{background:var(--bg-secondary);font-weight:600}.rich-editor-content img{border-radius:8px;max-width:100%;margin:12px 0}.quiz-builder{flex-direction:column;gap:16px;display:flex}.quiz-question-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;transition:border-color .2s}.quiz-question-card:hover{border-color:var(--border-light)}.quiz-question-header{align-items:center;gap:10px;margin-bottom:16px;display:flex}.quiz-type-badge{text-transform:uppercase;letter-spacing:.5px;border-radius:20px;padding:3px 10px;font-size:11px;font-weight:700}.quiz-type-badge.mcq{color:#8b5cf6;background:#8b5cf626}.quiz-type-badge.short_answer{color:#10b981;background:#10b98126}.quiz-question-number{color:var(--text-muted);flex:1;font-size:13px;font-weight:700}.mcq-options{flex-direction:column;gap:8px;display:flex}.mcq-option-row{align-items:center;gap:10px;display:flex}.mcq-radio{width:18px;height:18px;accent-color:var(--accent);cursor:pointer;flex-shrink:0}.mcq-correct-indicator{border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:24px;height:24px;font-size:12px;font-weight:700;transition:all .2s;display:flex}.mcq-correct-indicator.correct{color:var(--success);background:#10b98126}.quiz-add-buttons{gap:10px;padding:16px 0;display:flex}.resource-viewer-overlay{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:10000;background:#000000d9;justify-content:center;align-items:center;width:100vw;height:100vh;padding:24px;animation:.2s fadeIn;display:flex;position:fixed;top:0;left:0}.resource-viewer-panel{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);flex-direction:column;width:90vw;max-width:960px;height:85vh;max-height:85vh;display:flex;overflow:hidden;box-shadow:0 24px 80px #00000080}.resource-viewer-header{border-bottom:1px solid var(--border);flex-shrink:0;justify-content:space-between;align-items:center;padding:16px 20px;display:flex}.resource-viewer-body{flex:1;justify-content:center;align-items:center;display:flex;overflow:auto}.resource-viewer-body iframe{border:none;width:100%;height:100%}.resource-viewer-body video{object-fit:contain;width:100%;max-height:100%}.resource-viewer-body img{object-fit:contain;max-width:100%;max-height:100%}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}