@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap";:root{--bg-primary:#0a0f1e;--bg-secondary:#111a2e;--bg-tertiary:#172035;--bg-card:#111a2ed9;--bg-card-hover:#172035f2;--border:#3b82f61a;--border-hover:#3b82f640;--text-primary:#e2e8f0;--text-secondary:#94a3b8;--text-muted:#64748b;--accent:#3b82f6;--accent-glow:#3b82f64d;--accent-cyan:#06b6d4;--accent-emerald:#10b981;--accent-red:#ef4444;--accent-amber:#f59e0b;--gradient:linear-gradient(135deg, #3b82f6, #06b6d4);--shadow:0 4px 20px #0006;--radius:12px;--radius-sm:8px;--font:"Inter", -apple-system, sans-serif;--transition:.2s ease}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font);background:var(--bg-primary);color:var(--text-primary);min-height:100vh;line-height:1.6}a{color:var(--accent);text-decoration:none}a:hover{color:var(--accent-cyan)}.btn{border-radius:var(--radius-sm);font-family:var(--font);cursor:pointer;transition:all var(--transition);border:1px solid #0000;align-items:center;gap:8px;padding:10px 20px;font-size:14px;font-weight:500;display:inline-flex}.btn-primary{background:var(--gradient);color:#fff;box-shadow:0 2px 10px var(--accent-glow);border:none}.btn-primary:hover{box-shadow:0 4px 20px var(--accent-glow);transform:translateY(-1px)}.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border)}.btn-secondary:hover{border-color:var(--border-hover);background:var(--bg-card-hover)}.btn-danger{background:var(--accent-red);color:#fff}.btn-sm{padding:6px 14px;font-size:13px}.input{border-radius:var(--radius-sm);background:var(--bg-tertiary);border:1px solid var(--border);width:100%;color:var(--text-primary);font-family:var(--font);transition:border-color var(--transition);outline:none;padding:12px 16px;font-size:14px}.input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow)}.input::placeholder{color:var(--text-muted)}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);transition:all var(--transition);padding:24px}.card:hover{border-color:var(--border-hover);box-shadow:var(--shadow)}.container{max-width:1280px;margin:0 auto;padding:0 24px}.header{-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-bottom:1px solid var(--border);z-index:100;background:#0a0f1ee6;padding:16px 0;position:sticky;top:0}.header-inner{justify-content:space-between;align-items:center;max-width:1280px;margin:0 auto;padding:0 24px;display:flex}.logo{color:var(--text-primary);align-items:center;gap:10px;font-size:20px;font-weight:700;display:flex}.logo-icon{font-size:28px}.logo span{background:var(--gradient);-webkit-text-fill-color:transparent;-webkit-background-clip:text}.header-nav{align-items:center;gap:16px;display:flex}.nav-link{color:var(--text-secondary);border-radius:var(--radius-sm);transition:all var(--transition);padding:8px 16px;font-size:14px;font-weight:500}.nav-link:hover,.nav-link.active{color:var(--text-primary);background:var(--bg-tertiary)}.auth-page{background:radial-gradient(ellipse at top, var(--bg-secondary) 0%, var(--bg-primary) 70%);justify-content:center;align-items:center;min-height:100vh;display:flex}.auth-card{background:var(--bg-card);border:1px solid var(--border);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-radius:16px;width:100%;max-width:420px;padding:40px}.auth-card h1{text-align:center;margin-bottom:8px;font-size:28px}.auth-card p{color:var(--text-secondary);text-align:center;margin-bottom:32px;font-size:14px}.form-group{margin-bottom:20px}.form-group label{color:var(--text-secondary);margin-bottom:6px;font-size:13px;font-weight:500;display:block}.form-error{color:var(--accent-red);margin-top:4px;font-size:13px}.auth-footer{text-align:center;color:var(--text-muted);margin-top:24px;font-size:14px}.page-title{margin-bottom:8px;font-size:32px;font-weight:700}.page-subtitle{color:var(--text-secondary);margin-bottom:32px;font-size:16px}.filters{flex-wrap:wrap;gap:12px;margin-bottom:32px;display:flex}.filter-btn{background:var(--bg-tertiary);border:1px solid var(--border);color:var(--text-secondary);cursor:pointer;transition:all var(--transition);border-radius:20px;padding:8px 18px;font-size:13px;font-weight:500}.filter-btn:hover{border-color:var(--border-hover);color:var(--text-primary)}.filter-btn.active{background:var(--accent);border-color:var(--accent);color:#fff}.cases-grid{grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px;display:grid}.case-card{cursor:pointer;padding:0;overflow:hidden}.case-card-header{border-bottom:1px solid var(--border);align-items:center;gap:12px;padding:20px 24px;display:flex}.modality-badge{text-transform:uppercase;letter-spacing:.5px;border-radius:6px;padding:4px 10px;font-size:12px;font-weight:600}.modality-badge.ct{color:var(--accent);background:#3b82f626}.modality-badge.mri{color:var(--accent-cyan);background:#06b6d426}.modality-badge.xray{color:var(--accent-amber);background:#f59e0b26}.case-card-body{padding:20px 24px}.case-card-body h3{margin-bottom:8px;font-size:16px;font-weight:600;line-height:1.4}.case-card-body .diagnosis{color:var(--accent-cyan);-webkit-line-clamp:2;-webkit-box-orient:vertical;margin-bottom:12px;font-size:13px;display:-webkit-box;overflow:hidden}.case-card-meta{color:var(--text-muted);gap:16px;font-size:12px;display:flex}.case-card-meta span{align-items:center;gap:4px;display:flex}.viewer-page{height:calc(100vh - 65px);display:flex;overflow:hidden}.viewer-sidebar{border-right:1px solid var(--border);background:var(--bg-secondary);width:320px;min-width:320px;padding:24px;overflow-y:auto}.viewer-main{background:#000;flex-direction:column;flex:1;display:flex}.viewer-toolbar{background:var(--bg-secondary);border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:12px 20px;display:flex}.phase-tabs{gap:4px;display:flex}.phase-tab{border-radius:var(--radius-sm);border:1px solid var(--border);color:var(--text-secondary);cursor:pointer;transition:all var(--transition);background:0 0;padding:8px 16px;font-size:13px;font-weight:500}.phase-tab:hover{border-color:var(--border-hover);color:var(--text-primary)}.phase-tab.active{background:var(--accent);border-color:var(--accent);color:#fff}.viewer-image-container{-webkit-user-select:none;user-select:none;flex:1;justify-content:center;align-items:center;display:flex;position:relative;overflow:hidden}.viewer-image-container img{object-fit:contain;max-width:100%;max-height:100%;image-rendering:-webkit-optimize-contrast;filter:brightness(var(--brightness,1)) contrast(var(--contrast,1))}.viewer-split-container{-webkit-user-select:none;user-select:none;background:#111;flex:1;gap:2px;display:flex;position:relative;overflow:hidden}.viewer-split-container.single{gap:0}.viewer-split-container.dual .viewer-pane,.viewer-split-container.single .viewer-pane{flex:1}.viewer-pane{background:#000;justify-content:center;align-items:center;display:flex;position:relative;overflow:hidden}.viewer-pane img{object-fit:contain;max-width:100%;max-height:100%;image-rendering:-webkit-optimize-contrast;filter:brightness(var(--brightness,1)) contrast(var(--contrast,1))}.pane-label{z-index:5;text-transform:uppercase;letter-spacing:.5px;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-radius:10px;padding:3px 12px;font-size:11px;font-weight:600;position:absolute;top:8px;left:50%;transform:translate(-50%)}.pane-label.left{color:var(--accent-cyan);background:#06b6d433}.pane-label.right{color:var(--accent-emerald);background:#10b98133}.slice-counter{color:#fff;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#000000b3;border-radius:20px;padding:8px 20px;font-size:14px;font-weight:500;position:absolute;bottom:16px;left:50%;transform:translate(-50%)}.slice-slider-container{background:var(--bg-secondary);border-top:1px solid var(--border);padding:12px 20px}.slice-slider{appearance:none;background:var(--bg-tertiary);cursor:pointer;border-radius:3px;outline:none;width:100%;height:6px}.slice-slider::-webkit-slider-thumb{appearance:none;background:var(--accent);cursor:pointer;width:18px;height:18px;box-shadow:0 0 8px var(--accent-glow);border-radius:50%}.viewer-info h2{margin-bottom:12px;font-size:18px}.viewer-info .diagnosis-text{color:var(--accent-cyan);border-radius:var(--radius-sm);border-left:3px solid var(--accent-cyan);background:#06b6d414;margin-bottom:16px;padding:12px;font-size:14px;line-height:1.6}.viewer-info .desc-text{color:var(--text-secondary);font-size:14px;line-height:1.7}.viewer-info .meta-item{border-bottom:1px solid var(--border);justify-content:space-between;padding:8px 0;font-size:13px;display:flex}.viewer-info .meta-label{color:var(--text-muted)}.live-badge{color:var(--accent-red);text-transform:uppercase;background:#ef444426;border-radius:12px;align-items:center;gap:6px;padding:4px 12px;font-size:12px;font-weight:600;display:inline-flex}.live-dot{background:var(--accent-red);border-radius:50%;width:8px;height:8px;animation:1.5s infinite pulse}@keyframes pulse{0%,to{opacity:1}50%{opacity:.4}}.online-users{flex-wrap:wrap;gap:8px;margin:16px 0;display:flex}.online-user{background:var(--bg-tertiary);color:var(--text-secondary);border-radius:16px;align-items:center;gap:6px;padding:4px 10px;font-size:12px;display:flex}.online-dot{background:var(--accent-emerald);border-radius:50%;width:6px;height:6px}.classroom-code{letter-spacing:4px;color:var(--accent);text-align:center;background:var(--bg-tertiary);border-radius:var(--radius-sm);border:1px dashed var(--border);padding:16px;font-family:monospace;font-size:24px;font-weight:700}.remote-cursor{pointer-events:none;border:2px solid var(--accent-red);border-radius:50%;width:20px;height:20px;transition:left .1s linear,top .1s linear;position:absolute;transform:translate(-50%,-50%);box-shadow:0 0 12px #ef444480}.remote-cursor:after{content:attr(data-name);color:var(--accent-red);white-space:nowrap;font-size:11px;font-weight:600;position:absolute;top:-22px;left:50%;transform:translate(-50%)}.toast-container{z-index:9999;flex-direction:column;gap:8px;display:flex;position:fixed;top:20px;right:20px}.toast{border-radius:var(--radius-sm);background:var(--bg-card);border:1px solid var(--border);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);min-width:280px;padding:12px 20px;font-size:14px;animation:.3s slideIn}.toast.success{border-left:3px solid var(--accent-emerald)}.toast.error{border-left:3px solid var(--accent-red)}.toast.info{border-left:3px solid var(--accent)}@keyframes slideIn{0%{opacity:0;transform:translate(100%)}to{opacity:1;transform:translate(0)}}@media (width<=768px){.viewer-page{flex-direction:column}.viewer-sidebar{width:100%;min-width:auto;max-height:200px}.cases-grid{grid-template-columns:1fr}.filters{flex-wrap:nowrap;overflow-x:auto}}