:root{--bg:#07080f;--surface:#0e1018;--surface-2:#151926;--surface-3:#1c2135;--surface-4:#232844;--border:hsla(0,0%,100%,.07);--border-2:hsla(0,0%,100%,.13);--border-focus:rgba(99,102,241,.65);--text:#e8eaf0;--text-2:#9fa8c8;--muted:#5c6380;--accent:#6366f1;--accent-light:#818cf8;--accent-dark:#4f46e5;--accent-bg:rgba(99,102,241,.12);--accent-glow:rgba(99,102,241,.25);--danger:#ef4444;--danger-bg:rgba(239,68,68,.1);--success:#22c55e;--warn:#f59e0b;--topbar-h:58px;--sidebar-w:248px;--statusbar-h:27px;--r-sm:6px;--r:8px;--r-lg:14px;--shadow:0 4px 24px rgba(0,0,0,.45);--shadow-lg:0 8px 48px rgba(0,0,0,.65);--font:Inter,system-ui,-apple-system,sans-serif;--mono:"SF Mono",ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;--t:0.14s ease;--t-slow:0.28s ease}*,:after,:before{box-sizing:border-box}body,html{margin:0;padding:0;height:100%;font-family:var(--font)}body{background:var(--bg);color:var(--text);line-height:1.5;-webkit-font-smoothing:antialiased;overflow:hidden}.app{height:100vh;grid-template-rows:var(--topbar-h) 1fr var(--statusbar-h)}.app,.workspace{display:grid;overflow:hidden}.workspace{grid-template-columns:var(--sidebar-w) minmax(0,1fr);min-height:0;transition:grid-template-columns var(--t-slow)}.workspace.sidebar-collapsed{grid-template-columns:0 minmax(0,1fr)}.main-area{display:flex;min-height:0;overflow:hidden}.editor-col{flex:1 1;min-width:0;display:flex;flex-direction:column;border-right:1px solid var(--border)}.editor-col.hidden{display:none}.preview-col{flex:1 1;min-width:0;display:flex;flex-direction:column}.preview-col.hidden{display:none}.topbar{background:var(--surface);border-bottom:1px solid var(--border);padding:0 14px;gap:10px;z-index:20}.brand,.topbar{display:flex;align-items:center;flex-shrink:0}.brand{gap:9px}.brand-logo{width:30px;height:30px;border-radius:7px;background:linear-gradient(135deg,var(--accent) 0,#8b5cf6 100%);display:grid;place-items:center;font-size:13px;font-weight:800;color:#fff;flex-shrink:0;letter-spacing:-.5px}.brand-name{font-size:13px;font-weight:700;white-space:nowrap}.deck-title-input{background:var(--surface-2);border:1px solid var(--border);color:var(--text);border-radius:var(--r);padding:6px 12px;font-size:13px;font-weight:500;min-width:200px;max-width:280px;outline:none;transition:border-color var(--t),background var(--t)}.deck-title-input:focus{border-color:var(--border-focus);background:var(--surface-3)}.topbar-spacer{flex:1 1;min-width:8px}.topbar-group{display:flex;align-items:center;gap:5px}.topbar-sep{width:1px;height:18px;background:var(--border-2);margin:0 3px}.view-pills{display:flex;background:var(--surface-2);border-radius:var(--r);border:1px solid var(--border);overflow:hidden}.view-pill{padding:5px 11px;font-size:12px;font-weight:500;color:var(--muted);cursor:pointer;border:none;background:transparent;transition:background var(--t),color var(--t);display:flex;align-items:center;gap:5px}.view-pill:hover{color:var(--text-2)}.view-pill.active{background:var(--accent);color:#fff}.btn{display:inline-flex;align-items:center;gap:5px;padding:6px 12px;border-radius:var(--r);border:1px solid var(--border);background:var(--surface-2);color:var(--text-2);font-size:12.5px;font-weight:500;cursor:pointer;transition:background var(--t),color var(--t),border-color var(--t),transform .08s;white-space:nowrap;line-height:1;font-family:var(--font);-webkit-user-select:none;-moz-user-select:none;user-select:none}.btn:hover{background:var(--surface-3);color:var(--text);border-color:var(--border-2)}.btn:active{transform:translateY(1px)}.btn-ghost{background:transparent;border-color:transparent}.btn-ghost:hover{background:var(--surface-2);border-color:var(--border)}.btn-accent{background:var(--accent);border-color:var(--accent-dark);color:#fff!important}.btn-accent:hover{background:var(--accent-light);border-color:var(--accent)}.btn-danger{background:var(--danger-bg);border-color:rgba(239,68,68,.4);color:var(--danger)}.btn-danger:hover{background:var(--danger);color:#fff;border-color:var(--danger)}.btn-icon{padding:6px;width:30px;height:30px;justify-content:center;flex-shrink:0}.btn-sm{padding:4px 9px;font-size:11.5px}.btn:disabled{opacity:.35;cursor:not-allowed;pointer-events:none}.sidebar{background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;min-height:0;overflow:hidden}.sidebar-head{display:flex;align-items:center;justify-content:space-between;padding:9px 10px;border-bottom:1px solid var(--border);flex-shrink:0}.sidebar-label{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.07em;color:var(--muted)}.sidebar-tools{display:flex;gap:3px}.slides-list{flex:1 1;overflow-y:auto;padding:7px;display:flex;flex-direction:column;gap:5px}.slide-thumb{position:relative;padding:7px;border-radius:var(--r);border:1.5px solid var(--border);background:var(--surface-2);cursor:pointer;transition:border-color var(--t),background var(--t);-webkit-user-select:none;-moz-user-select:none;user-select:none}.slide-thumb:hover{border-color:var(--border-2);background:var(--surface-3)}.slide-thumb.active{border-color:var(--accent);background:var(--accent-bg)}.slide-thumb.drag-over-top{border-top-color:var(--accent-light);border-top-width:3px}.slide-thumb.drag-over-bottom{border-bottom-color:var(--accent-light);border-bottom-width:3px}.slide-thumb.dragging{opacity:.4}.thumb-frame{width:100%;aspect-ratio:16/9;border-radius:4px;overflow:hidden;border:1px solid var(--border);background:#fff;position:relative}.thumb-frame iframe{position:absolute;top:0;left:0;border:none;pointer-events:none;transform-origin:top left}.thumb-meta{margin-top:7px;display:flex;align-items:center;gap:7px}.thumb-num{font-size:10px;font-weight:700;color:var(--muted);min-width:16px;flex-shrink:0}.thumb-title{font-size:11.5px;color:var(--text-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1 1}.slide-thumb.active .thumb-title{color:var(--text)}.thumb-actions{position:absolute;top:5px;right:5px;display:none;gap:3px;z-index:2}.slide-thumb:hover .thumb-actions{display:flex}.editor-panel{flex:1 1;min-height:0;display:flex;flex-direction:column;background:var(--surface)}.panel-toolbar{display:flex;align-items:center;gap:7px;padding:7px 11px;border-bottom:1px solid var(--border);flex-shrink:0}.slide-title-input{flex:1 1;background:transparent;border:1px solid transparent;color:var(--text);font-size:13px;font-weight:500;border-radius:var(--r-sm);padding:4px 8px;outline:none;font-family:var(--font);transition:border-color var(--t),background var(--t)}.slide-title-input:hover{background:var(--surface-2);border-color:var(--border)}.slide-title-input:focus{background:var(--surface-2);border-color:var(--border-focus)}.code-editor-area{flex:1 1;min-height:0;display:grid;grid-template-columns:40px minmax(0,1fr);overflow:hidden}.line-numbers{background:#0a0d18;border-right:1px solid var(--border);color:var(--muted);font-family:var(--mono);font-size:12px;line-height:1.65;padding:14px 6px 14px 4px;text-align:right;overflow:hidden;-webkit-user-select:none;-moz-user-select:none;user-select:none;flex-shrink:0}.line-number{display:block}.code-textarea{display:block;width:100%;height:100%;border:none;outline:none;resize:none;padding:14px 16px;font-family:var(--mono);font-size:12.5px;line-height:1.65;background:#0a0d18;color:#c9d1f0;-moz-tab-size:2;tab-size:2;caret-color:var(--accent-light);overflow-y:auto}.code-textarea::selection{background:rgba(99,102,241,.35)}.editor-footer{display:flex;align-items:center;justify-content:space-between;padding:6px 11px;border-top:1px solid var(--border);flex-shrink:0;font-size:11px;color:var(--muted);gap:8px}.editor-footer-actions{display:flex;align-items:center;gap:6px}.notes-panel{border-top:1px solid var(--border);flex-shrink:0;display:flex;flex-direction:column;height:130px}.notes-header{display:flex;align-items:center;justify-content:space-between;padding:5px 11px;border-bottom:1px solid var(--border);font-size:10.5px;font-weight:600;text-transform:uppercase;letter-spacing:.07em;color:var(--muted);flex-shrink:0}.notes-textarea{flex:1 1;width:100%;border:none;outline:none;resize:none;padding:9px 13px;font-family:var(--font);font-size:12.5px;line-height:1.6;background:var(--surface-2);color:var(--text-2)}.notes-textarea::placeholder{color:var(--muted)}.preview-panel{flex:1 1;min-height:0;display:flex;flex-direction:column;background:var(--bg)}.preview-toolbar{display:flex;align-items:center;justify-content:space-between;padding:7px 11px;border-bottom:1px solid var(--border);background:var(--surface);flex-shrink:0}.preview-label{font-size:11px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.06em}.preview-stage{flex:1 1;min-height:0;display:grid;place-items:center;padding:20px;background:repeating-linear-gradient(45deg,var(--surface) 0,var(--surface) 10px,var(--bg) 10px,var(--bg) 20px)}.preview-frame{border:none;border-radius:0;box-shadow:0 2px 32px rgba(0,0,0,.6),0 0 0 1px hsla(0,0%,100%,.06);background:#fff;display:block;flex-shrink:0}.grid-view{flex:1 1;overflow-y:auto;padding:24px}.grid-view-header{margin-bottom:20px;display:flex;align-items:center;gap:10px}.grid-view-title{font-size:16px;font-weight:600;color:var(--text)}.grid-view-count{font-size:12px;color:var(--muted);background:var(--surface-2);border:1px solid var(--border);border-radius:100px;padding:2px 8px}.grid-slides{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));grid-gap:18px;gap:18px}.grid-card{border:2px solid var(--border);border-radius:var(--r-lg);background:var(--surface-2);overflow:hidden;cursor:pointer;transition:border-color var(--t),transform .2s ease,box-shadow .2s ease}.grid-card:hover{border-color:var(--border-2);transform:translateY(-2px);box-shadow:var(--shadow)}.grid-card.active{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent),var(--shadow)}.grid-card-thumb{width:100%;aspect-ratio:16/9;overflow:hidden;background:#fff;position:relative}.grid-card-thumb iframe{position:absolute;top:0;left:0;border:none;pointer-events:none;transform-origin:top left}.grid-card-info{padding:9px 13px;display:flex;align-items:center;gap:8px;border-top:1px solid var(--border)}.grid-card-num{font-size:10.5px;font-weight:700;color:var(--muted);background:var(--surface-3);border-radius:4px;padding:2px 6px}.grid-card-name{font-size:12.5px;color:var(--text-2);flex:1 1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.grid-card.active .grid-card-name{color:var(--text)}.present-overlay{position:fixed;inset:0;background:#000;z-index:100;display:grid;grid-template-rows:3px 1fr auto}.present-progress{background:var(--accent);transition:width .35s ease;height:3px}.present-stage{display:grid;place-items:center}.present-slide,.present-stage{overflow:hidden;position:relative}.present-slide{flex-shrink:0}.present-slide.fade-enter{animation:fade-in .4s ease forwards}.present-slide.slide-enter-right{animation:slide-from-right .35s ease forwards}.present-slide.slide-enter-left{animation:slide-from-left .35s ease forwards}@keyframes fade-in{0%{opacity:0}to{opacity:1}}@keyframes slide-from-right{0%{transform:translateX(60px);opacity:0}to{transform:translateX(0);opacity:1}}@keyframes slide-from-left{0%{transform:translateX(-60px);opacity:0}to{transform:translateX(0);opacity:1}}.present-hud{display:flex;align-items:center;justify-content:center;gap:14px;padding:12px 24px;background:rgba(0,0,0,.85);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.present-counter{font-size:13px;color:hsla(0,0%,100%,.55);min-width:70px;text-align:center}.present-exit-btn{position:absolute;top:16px;right:16px;z-index:10;background:rgba(0,0,0,.6);border:1px solid hsla(0,0%,100%,.15);border-radius:100px;color:hsla(0,0%,100%,.7);font-size:12px;padding:6px 12px;cursor:pointer;transition:background var(--t);font-family:var(--font)}.present-exit-btn:hover{background:hsla(0,0%,100%,.15);color:#fff}.present-notes{position:absolute;bottom:80px;left:50%;transform:translateX(-50%);max-width:640px;width:calc(100% - 60px);background:rgba(10,10,20,.9);border:1px solid hsla(0,0%,100%,.12);border-radius:var(--r-lg);padding:14px 18px;font-size:14px;color:hsla(0,0%,100%,.75);line-height:1.6;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);animation:slide-up .2s ease}.modal-backdrop{position:fixed;inset:0;background:rgba(0,0,0,.7);-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);z-index:50;display:grid;place-items:center;padding:20px}.modal{background:var(--surface-2);border:1px solid var(--border-2);border-radius:var(--r-lg);width:100%;max-width:740px;max-height:82vh;display:flex;flex-direction:column;box-shadow:var(--shadow-lg);animation:slide-up .22s ease}.modal-sm{max-width:420px}.modal-head{padding:15px 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;flex-shrink:0}.modal-title{font-size:14.5px;font-weight:600;margin:0}.modal-body{flex:1 1;overflow-y:auto;padding:18px 20px}.modal-foot{padding:11px 20px;border-top:1px solid var(--border);display:flex;justify-content:flex-end;gap:8px;flex-shrink:0}.template-category{margin-bottom:20px}.template-cat-label{font-size:10.5px;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-bottom:10px}.template-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));grid-gap:12px;gap:12px}.template-card{border:2px solid var(--border);border-radius:var(--r);overflow:hidden;cursor:pointer;transition:border-color var(--t),transform .18s ease;background:var(--surface-3)}.template-card:hover{border-color:var(--border-2);transform:translateY(-2px)}.template-card.selected{border-color:var(--accent)}.template-thumb-preview{aspect-ratio:16/9;display:flex;align-items:center;justify-content:center}.template-thumb-preview span{font-size:1.8rem}.template-card-info{padding:8px 10px}.template-card-name{font-size:12px;font-weight:600;color:var(--text);margin:0 0 2px}.template-card-desc{margin:0}.statusbar,.template-card-desc{font-size:11px;color:var(--muted)}.statusbar{background:var(--surface);border-top:1px solid var(--border);display:flex;align-items:center;padding:0 13px;gap:14px;flex-shrink:0}.statusbar-spacer{flex:1 1}.status-dot{width:6px;height:6px;border-radius:50%;display:inline-block;margin-right:4px;background:var(--muted)}.status-dot.saved{background:var(--success)}.status-dot.dirty{background:var(--warn)}.status-item{display:flex;align-items:center}.shortcuts-section{margin-bottom:18px}.shortcuts-section-title{font-size:10.5px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-bottom:8px}.shortcut-row{display:flex;align-items:center;justify-content:space-between;padding:7px 0;border-bottom:1px solid var(--border);font-size:12.5px}.shortcut-row:last-child{border-bottom:none}.shortcut-desc{color:var(--text-2)}.shortcut-keys{display:flex;gap:4px}kbd{background:var(--surface-3);border:1px solid var(--border-2);border-radius:4px;padding:2px 6px;font-family:var(--mono);font-size:10.5px;color:var(--text);line-height:1.5}.toast-stack{position:fixed;bottom:46px;left:50%;transform:translateX(-50%);z-index:200;display:flex;flex-direction:column;align-items:center;gap:7px;pointer-events:none}.toast{background:var(--surface-3);border:1px solid var(--border-2);border-radius:var(--r);padding:8px 14px;font-size:12.5px;color:var(--text);box-shadow:var(--shadow);animation:toast-in .18s ease,toast-out .2s ease 1.9s forwards;white-space:nowrap}@keyframes toast-in{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}@keyframes toast-out{0%{opacity:1}to{opacity:0}}@keyframes slide-up{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@keyframes fade-in-modal{0%{opacity:0}to{opacity:1}}::-webkit-scrollbar{width:5px;height:5px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--surface-3);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--surface-4)}input,textarea{font-family:var(--font)}input[type=search],input[type=text]{outline:none;border:1px solid var(--border);background:var(--surface-2);color:var(--text);border-radius:var(--r);padding:6px 10px;font-size:13px;transition:border-color var(--t)}input[type=search]:focus,input[type=text]:focus{border-color:var(--border-focus)}@media (max-width:1100px){:root{--sidebar-w:210px}}