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video{width:100%;height:100%;object-fit:cover}.device-preview-placeholder{min-height:240px;display:grid;place-items:center;background:var(--bg-video);border-radius:12px;color:var(--text-secondary);text-align:center;padding:24px}.board-layout{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(280px,.8fr);gap:16px}.board-column{display:grid;gap:16px;align-content:start}.board-canvas{position:relative;min-height:400px;margin-top:8px;overflow:hidden;border-radius:12px;border:1px solid var(--border-subtle);background:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px),var(--bg-surface-1);background-size:32px 32px,32px 32px,100%}[data-theme=dark] .board-canvas{background:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px),var(--bg-surface-1);background-size:32px 32px,32px 32px,100%}[data-theme=light] .board-canvas{background:linear-gradient(rgba(0,0,0,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(0,0,0,.05) 1px,transparent 1px),#fff;background-size:32px 32px,32px 32px,100%}.canvas-item{position:absolute;display:grid;align-content:space-between;padding:12px;border-radius:10px;color:#fff;box-shadow:0 8px 24px #0000003d;cursor:pointer;transition:transform .12s,box-shadow .12s,outline-color .12s;outline:3px solid transparent}.canvas-item strong{font-size:14px}.canvas-item small{opacity:.8;font-size:12px}.canvas-item.sticky{background:linear-gradient(180deg,#fbbf24,#f59e0b);color:#1c1400}.canvas-item.shape{background:linear-gradient(180deg,#0d9488,#0f766e)}.canvas-item.text{background:var(--bg-surface-2);color:var(--text-primary);border:1px solid var(--border-default)}.canvas-item.pen{background:linear-gradient(180deg,#ef4444,#b91c1c)}.canvas-item.connector{background:var(--bg-surface-3);color:var(--text-primary);border:1px solid var(--border-default)}.canvas-item.template{background:linear-gradient(180deg,#a855f7,#7c3aed)}.canvas-item.selected{transform:translateY(-2px);box-shadow:0 12px 32px #0000004d;outline-color:var(--action-primary)}.canvas-item.focused{outline-color:#0d9488}.admin-portal,.admin-page{display:grid;gap:20px}.admin-token-form{display:grid;gap:16px}.admin-field{display:grid;gap:6px}.admin-field label{font-size:13px;font-weight:500;color:var(--text-secondary)}.admin-field span{font-size:12px;color:var(--text-muted)}.admin-token-card{display:grid;grid-template-columns:minmax(260px,.9fr) minmax(0,1.1fr);gap:16px;align-items:start}.admin-tabbar{display:grid;gap:4px;grid-template-columns:repeat(auto-fit,minmax(110px,1fr))}.admin-page-header{display:grid;grid-template-columns:1fr auto;gap:16px;align-items:start}.admin-definition-list{margin:0;display:grid;gap:10px}.admin-definition-list div{display:flex;justify-content:space-between;gap:16px}.admin-definition-list dt{color:var(--text-muted);font-size:13px}.admin-definition-list dd{margin:0;font-weight:600;font-size:13px;color:var(--text-primary)}.admin-metric-card strong{font-size:28px;font-weight:700;color:var(--text-primary)}.admin-table{overflow:hidden;padding:0;border-radius:12px;border:1px solid var(--border-subtle);background:var(--bg-surface-1)}.admin-table-head{background:var(--bg-surface-2);color:var(--text-muted);font-size:11px;text-transform:uppercase;letter-spacing:.08em;font-weight:500}.admin-table-row{display:grid;grid-template-columns:minmax(0,1.2fr) repeat(2,minmax(0,.8fr)) minmax(200px,1fr);align-items:center;padding:12px 16px;border-bottom:1px solid var(--border-subtle);gap:16px}.admin-table-row:last-child{border-bottom:0}.admin-table-row:hover:not(.admin-table-head){background:var(--state-hover)}.admin-table-row span{display:grid;gap:2px}.admin-table-row small,.meta-line{color:var(--text-muted);font-size:12px}.meta-list{margin:0;padding-left:16px;color:var(--text-muted);font-size:13px}.log-list{display:grid;gap:8px}.log-entry{display:grid;gap:4px;padding:10px 12px;border-radius:8px;background:var(--bg-surface-2);border:1px solid var(--border-subtle)}.log-entry span{color:var(--text-muted);font-size:13px}.content{padding:2.5rem}.nav-grid{display:grid;gap:.65rem;align-content:start}.nav-link{padding:.9rem 1rem;border-radius:.9rem;border:1px solid transparent;background:#ffffff0f;transition:transform .12s ease,border-color .12s ease,background .12s ease;display:block;font-size:14px;color:var(--text-secondary)}.nav-link:hover,.nav-link.active{transform:translate(4px);border-color:#7c3aed42;background:#7c3aed14;color:var(--text-primary)}.rail-meta{display:flex;justify-content:space-between;gap:1rem;color:var(--text-muted);font-size:.9rem}.empty-state{display:grid;place-items:center;text-align:center;padding:48px 24px;gap:12px}.empty-state-icon{width:48px;height:48px;border-radius:12px;background:var(--bg-surface-2);margin:0 auto;display:grid;place-items:center}.empty-state h3{font-size:16px;font-weight:600;color:var(--text-primary);margin:0}.empty-state p{font-size:14px;color:var(--text-muted);margin:0;max-width:320px;line-height:1.5}.skeleton{background:linear-gradient(90deg,var(--bg-surface-2) 25%,var(--bg-surface-3) 50%,var(--bg-surface-2) 75%);background-size:200% 100%;animation:shimmer 1.5s infinite;border-radius:6px}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}[data-tooltip]{position:relative}[data-tooltip]:after{content:attr(data-tooltip);position:absolute;bottom:calc(100% + 6px);left:50%;transform:translate(-50%);white-space:nowrap;background:var(--bg-surface-3);color:var(--text-primary);font-size:12px;padding:4px 8px;border-radius:4px;border:1px solid var(--border-default);pointer-events:none;opacity:0;transition:opacity .12s;z-index:100}[data-tooltip]:hover:after,[data-tooltip]:focus:after{opacity:1}@media(max-width:1024px){.app-shell{grid-template-columns:var(--rail-width) 1fr;--rail-width: 72px}.dashboard-grid{grid-template-columns:1fr}}@media(max-width:768px){.app-shell{grid-template-columns:1fr}.rail{display:none}.board-layout,.split-grid,.meeting-room-layout,.meeting-summary-grid,.meeting-stage-grid,.speaker-layout,.device-check-grid,.admin-token-card,.admin-page-header{grid-template-columns:1fr}.content-area{padding:16px}.top-bar{padding:0 16px}.admin-table-row{grid-template-columns:1fr}.meeting-sidebar{display:none}}