:root{--bg-base: #eef0f4;--bg-surface: #ffffff;--bg-elevated: #f3f4f7;--bg-panel: #ffffff;--bg-hover: #eceef2;--bg-active: #e4e7ee;--bg-board: #e7e9ef;--border-subtle: #e8eaef;--border-default: #d8dce4;--border-strong: #bcc2ce;--text-primary: #1f2430;--text-secondary: #4b5565;--text-tertiary: #7b8494;--text-muted: #aab1be;--accent: #5b5bd6;--accent-hover: #4a4ac2;--accent-dim: rgba(91, 91, 214, .12);--accent-glow: rgba(91, 91, 214, .28);--good: #30a46c;--warn: #d97706;--bad: #e5484d;--info: #3b82f6;--xfer: #5b5bd6;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter", Helvetica, Arial, sans-serif;--font-mono: "SF Mono", "Fira Code", "Cascadia Code", "Consolas", monospace;--radius-sm: 7px;--radius-md: 11px;--radius-lg: 16px;--transition: .16s ease;--shadow-pop: 0 14px 44px rgba(31, 36, 48, .16)}[hidden]{display:none!important}*{box-sizing:border-box}html,body{height:100%}body{margin:0;font-family:var(--font-sans);font-size:15px;line-height:1.5;color:var(--text-primary);background:var(--bg-base);-webkit-font-smoothing:antialiased;overscroll-behavior:none}#app{min-height:100vh;min-height:100dvh;display:flex;flex-direction:column}svg{width:1.15em;height:1.15em;flex:none}.topbar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:10px clamp(12px,3vw,22px);border-bottom:1px solid var(--border-subtle);position:sticky;top:0;z-index:20;background:#ffffffdb;backdrop-filter:blur(12px)}.brand{display:flex;align-items:center;gap:10px;font-weight:650}.brand-mark{display:grid;place-items:center;width:32px;height:32px;border-radius:9px;color:#fff;background:linear-gradient(140deg,var(--accent),#7c74f0);box-shadow:0 4px 14px var(--accent-glow)}.brand-mark svg{width:18px;height:18px;stroke-width:2}.brand-name{font-size:17px;letter-spacing:-.01em}.room-info{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.status{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--text-secondary)}.status-dot{width:10px;height:10px;border-radius:50%;background:var(--text-muted);flex:none}.status-dot[data-status=connecting]{background:var(--warn);animation:pulse 1.4s infinite}.status-dot[data-status=waiting]{background:var(--warn);animation:pulse 1.6s infinite}.status-dot[data-status=live]{background:var(--good)}.status-dot[data-status=error]{background:var(--bad)}@keyframes pulse{0%,to{opacity:1}50%{opacity:.35}}.sas{display:inline-flex;align-items:center;gap:7px;padding:4px 10px;border:1px solid var(--border-default);border-radius:20px;background:var(--bg-panel);cursor:pointer;font:inherit;transition:var(--transition)}.sas:hover{border-color:var(--accent)}.sas-label{font-size:10px;text-transform:uppercase;letter-spacing:.06em;color:var(--text-tertiary)}.sas-words{font-family:var(--font-mono);font-size:12.5px;font-weight:600;color:var(--accent)}.members{display:flex;align-items:center}.avatar{display:grid;place-items:center;width:26px;height:26px;margin-left:-6px;border-radius:50%;border:2px solid var(--bg-surface);background:hsl(var(--hue, 210),62%,55%);color:#fff;font-size:11px;font-weight:700}.avatar:first-child{margin-left:0}.avatar.more{background:var(--bg-active);color:var(--text-secondary)}.top-actions{display:flex;align-items:center;gap:6px;margin-left:auto;position:relative}.name-input{width:118px;padding:8px 11px;border:1px solid var(--border-default);border-radius:var(--radius-sm);background:var(--bg-panel);color:var(--text-primary);font:inherit;font-size:13.5px}.name-input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-dim)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:9px 14px;border:1px solid var(--border-default);border-radius:var(--radius-sm);background:var(--bg-elevated);color:var(--text-primary);font:inherit;font-size:13.5px;font-weight:550;cursor:pointer;transition:var(--transition)}.btn:hover{background:var(--bg-hover);border-color:var(--border-strong)}.btn svg{width:16px;height:16px}.btn-accent{background:linear-gradient(140deg,var(--accent),#7c74f0);color:#fff;border-color:transparent;box-shadow:0 4px 14px var(--accent-glow)}.btn-accent:hover{background:linear-gradient(140deg,var(--accent-hover),#6b62e6)}.btn-ghost{background:var(--bg-panel)}.icon-btn{width:36px;height:36px;display:grid;place-items:center;border:1px solid var(--border-default);border-radius:var(--radius-sm);background:var(--bg-panel);color:var(--text-secondary);cursor:pointer;transition:var(--transition)}.icon-btn:hover{background:var(--bg-hover);color:var(--text-primary);border-color:var(--border-strong)}.icon-btn svg{width:17px;height:17px}.invite-pop{position:absolute;top:calc(100% + 10px);right:0;z-index:30;width:min(340px,86vw);padding:14px;background:var(--bg-surface);border:1px solid var(--border-default);border-radius:var(--radius-md);box-shadow:var(--shadow-pop)}.invite-row{display:flex;gap:6px}.invite-row input{flex:1;min-width:0;padding:9px 11px;border:1px solid var(--border-default);border-radius:var(--radius-sm);background:var(--bg-elevated);color:var(--accent);font-family:var(--font-mono);font-size:12px}.invite-actions{display:flex;gap:8px;margin-top:10px}.invite-actions .btn{flex:1}.qr-box{margin-top:12px;display:grid;place-items:center;padding:10px;background:#fff;border:1px solid var(--border-default);border-radius:var(--radius-md)}.qr-box img{display:block;width:200px;height:200px}.invite-note{margin:10px 0 0;font-size:12px;color:var(--text-tertiary)}.trust-banner{display:flex;align-items:center;gap:10px;width:100%;padding:8px clamp(12px,3vw,22px);border:0;border-bottom:1px solid var(--border-subtle);background:var(--accent-dim);color:var(--text-secondary);font:inherit;font-size:12.5px;text-align:left;cursor:pointer;transition:var(--transition)}.trust-banner:hover{color:var(--text-primary)}.trust-banner svg{width:16px;height:16px;color:var(--accent)}.main-content{flex:1 1 auto;min-height:0;position:relative;display:flex}.board-wrap{flex:1 1 auto;position:relative;overflow:hidden;background:var(--bg-board)}.board-canvas{display:block;width:100%;height:100%;touch-action:none;cursor:crosshair}.board-canvas[data-tool=eraser]{cursor:cell}.board-canvas[data-tool=text]{cursor:text}.cursor-layer{position:absolute;inset:0;pointer-events:none;z-index:5}.remote-cursor{position:absolute;top:0;left:0;will-change:transform}.remote-cursor svg{fill:hsl(var(--hue, 210),70%,52%);stroke:#fff;stroke-width:1.4}.cursor-name{position:absolute;top:16px;left:14px;white-space:nowrap;padding:1px 7px;border-radius:10px;font-size:11px;font-weight:600;color:#fff;background:hsl(var(--hue, 210),70%,52%)}.board-text-input{position:absolute;z-index:6;margin:0;padding:0 2px;border:1px dashed var(--accent);background:#fff9;outline:none;resize:none;overflow:hidden;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Helvetica,Arial,sans-serif;line-height:1.15;min-width:40px}.toolbar{position:absolute;left:50%;bottom:16px;transform:translate(-50%);display:flex;align-items:center;gap:6px;flex-wrap:wrap;justify-content:center;max-width:calc(100% - 20px);padding:8px;z-index:8;background:var(--bg-surface);border:1px solid var(--border-default);border-radius:14px;box-shadow:var(--shadow-pop)}.tool-group{display:flex;align-items:center;gap:4px}.tool-sep{width:1px;align-self:stretch;margin:2px 3px;background:var(--border-subtle)}.tool-btn{width:38px;height:38px;display:grid;place-items:center;border:1px solid transparent;border-radius:9px;background:transparent;color:var(--text-secondary);cursor:pointer;transition:var(--transition)}.tool-btn:hover{background:var(--bg-hover);color:var(--text-primary)}.tool-btn svg{width:19px;height:19px}.tool-btn.active{background:var(--accent);color:#fff;border-color:transparent;box-shadow:0 3px 10px var(--accent-glow)}.swatch{width:24px;height:24px;border-radius:50%;cursor:pointer;border:2px solid var(--bg-surface);background:var(--sw);box-shadow:0 0 0 1px var(--border-default);transition:transform var(--transition)}.swatch:hover{transform:scale(1.12)}.swatch.active{box-shadow:0 0 0 2px var(--accent);transform:scale(1.12)}.width-btn{width:32px;height:34px;display:grid;place-items:center;border:1px solid transparent;border-radius:8px;background:transparent;cursor:pointer;transition:var(--transition)}.width-btn:hover{background:var(--bg-hover)}.width-btn.active{background:var(--accent-dim)}.width-dot{display:block;border-radius:50%;background:var(--text-secondary)}.width-btn.active .width-dot{background:var(--accent)}.btn-ghost span{font-size:13px}.site-footer{flex-shrink:0;border-top:1px solid var(--border-subtle);padding:12px 20px;background:var(--bg-surface)}.footer-inner{display:flex;align-items:center;justify-content:center;gap:14px;flex-wrap:wrap;text-align:center;font-size:12.5px;color:var(--text-tertiary)}.footer-inner a{color:var(--text-secondary);text-decoration:none}.footer-inner a:hover{color:var(--accent)}.link-btn{border:0;background:transparent;color:var(--text-tertiary);font:inherit;font-size:12.5px;cursor:pointer;text-decoration:underline;text-underline-offset:2px}.link-btn:hover{color:var(--bad)}.drawer{position:fixed;top:0;right:0;height:100%;width:min(400px,92vw);z-index:40;background:var(--bg-surface);border-left:1px solid var(--border-default);box-shadow:-20px 0 60px #1f24302e;transform:translate(100%);transition:transform .22s ease;display:flex;flex-direction:column}.drawer.open{transform:translate(0)}.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid var(--border-subtle)}.drawer-title{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--text-tertiary)}.drawer-controls{display:flex;align-items:center;gap:10px}.count{font-size:12px;color:var(--text-tertiary)}.filter-pill{padding:4px 9px;border:1px solid var(--border-default);border-radius:20px;background:transparent;color:var(--text-secondary);font:inherit;font-size:11.5px;cursor:pointer}.filter-pill:hover{background:var(--bg-hover)}.drawer-close{width:30px;height:30px;border:0;border-radius:var(--radius-sm);background:var(--bg-elevated);color:var(--text-secondary);font-size:20px;line-height:1;cursor:pointer}.drawer-close:hover{background:var(--bg-hover);color:var(--text-primary)}.drawer-list{flex:1;overflow-y:auto;padding:8px 12px;font-family:var(--font-mono);font-size:12px}.event{display:grid;grid-template-columns:auto auto 1fr;gap:8px;align-items:baseline;padding:3px 0}.event .ts{color:var(--text-muted);font-size:11px}.event .ev-dot{width:7px;height:7px;border-radius:50%;background:var(--text-muted);align-self:center}.event[data-kind=good] .ev-dot{background:var(--good)}.event[data-kind=warn] .ev-dot{background:var(--warn)}.event[data-kind=bad] .ev-dot{background:var(--bad)}.event[data-kind=info] .ev-dot{background:var(--info)}.event[data-kind=xfer] .ev-dot{background:var(--xfer)}.event .msg{color:var(--text-secondary);word-break:break-word}#modal-host{position:fixed;inset:0;z-index:60;display:grid;place-items:center;padding:16px}.modal-backdrop{position:absolute;inset:0;background:#1f243073;backdrop-filter:blur(3px)}.modal{position:relative;z-index:1;width:min(640px,100%);max-height:86vh;overflow-y:auto;border:1px solid var(--border-default);border-radius:var(--radius-lg);background:var(--bg-surface);box-shadow:0 30px 90px #1f243047}.modal-head{display:flex;align-items:center;justify-content:space-between;padding:18px 22px;border-bottom:1px solid var(--border-subtle);position:sticky;top:0;background:var(--bg-surface)}.modal-title{margin:0;font-size:18px}.modal-body{padding:22px}.modal-body p{color:var(--text-secondary)}.steps{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:16px}.steps li{display:flex;gap:14px}.step-n{flex:none;width:28px;height:28px;display:grid;place-items:center;border-radius:50%;background:var(--accent-dim);color:var(--accent);font-weight:700;font-size:13px;border:1px solid rgba(91,91,214,.3)}.steps strong{color:var(--text-primary)}.steps div{color:var(--text-secondary);font-size:14px}.steps code{font-family:var(--font-mono);font-size:12px;background:var(--bg-elevated);padding:1px 5px;border-radius:4px;color:var(--accent)}.muted{color:var(--text-tertiary)}.small{font-size:12.5px}.tm{display:flex;flex-direction:column;gap:20px}.tm h3{margin:0 0 8px;font-size:14px;display:flex;align-items:center;gap:8px}.tm-good{color:var(--good)}.tm-bad{color:var(--bad)}.tm-trust{color:var(--info)}.tm ul{margin:0;padding-left:18px;display:flex;flex-direction:column;gap:7px}.tm li{color:var(--text-secondary);font-size:13.5px}.tm strong{color:var(--text-primary)}.about-links{display:flex;flex-wrap:wrap;gap:16px;margin-top:12px}.about-links a{color:var(--accent);text-decoration:none;font-size:14px}.about-links a:hover{text-decoration:underline}.glossary-link{color:var(--accent);border-bottom:1px dotted var(--accent);cursor:help;text-decoration:none}.glossary-tip{position:fixed;z-index:80;width:min(300px,82vw);padding:12px 14px;border:1px solid var(--border-strong);border-radius:var(--radius-md);background:var(--bg-surface);box-shadow:var(--shadow-pop)}.glossary-term{font-weight:700;font-size:12px;text-transform:uppercase;letter-spacing:.05em;color:var(--accent);margin-bottom:5px}.glossary-def{font-size:13px;color:var(--text-secondary);line-height:1.5}#toast{position:fixed;bottom:84px;left:50%;transform:translate(-50%,20px);z-index:90;padding:11px 18px;border-radius:var(--radius-md);background:var(--text-primary);border:1px solid transparent;color:#fff;font-size:13.5px;box-shadow:var(--shadow-pop);opacity:0;pointer-events:none;transition:opacity .2s,transform .2s}#toast.show{opacity:1;transform:translate(-50%)}#toast[data-kind=ok]{background:var(--good)}#toast[data-kind=err]{background:var(--bad)}@media(max-width:720px){.brand-name,.btn-accent span{display:none}.btn-accent{padding:9px 11px}.name-input{width:92px}.room-info{order:3;width:100%}.top-actions{order:2}}@media(max-width:460px){.btn-ghost span{display:none}.toolbar{gap:4px;padding:6px;bottom:10px}.tool-btn{width:34px;height:34px}.swatch{width:21px;height:21px}}