:root{--bg:#f6f3ec;--surface:#fff;--surface-2:#efebe2;--text:#1f1d1a;--muted:#6b665d;--border:#e2ddd2;--accent:#1f7a5c;--accent-text:#fff;--danger:#c0392b;--shadow:0 6px 24px #0000001f, 0 1px 3px #00000014;--radius:14px;--tap:44px;--safe-top:env(safe-area-inset-top,0px);--safe-bottom:env(safe-area-inset-bottom,0px);--safe-left:env(safe-area-inset-left,0px);--safe-right:env(safe-area-inset-right,0px);--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#18181b;--surface:#232327;--surface-2:#2d2d32;--text:#ececec;--muted:#a1a1aa;--border:#3a3a40;--accent:#6fd3ae;--accent-text:#111827;--danger:#ff7b6b;--shadow:0 6px 24px #00000080, 0 1px 3px #0006;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}}:root[data-theme=dark]{--bg:#18181b;--surface:#232327;--surface-2:#2d2d32;--text:#ececec;--muted:#a1a1aa;--border:#3a3a40;--accent:#6fd3ae;--accent-text:#111827;--danger:#ff7b6b;--shadow:0 6px 24px #00000080, 0 1px 3px #0006;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}*,:before,:after{box-sizing:border-box}html,body,#root{height:100%}body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent;overscroll-behavior:none;margin:0;font:16px/1.45 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}button{font:inherit;color:inherit}code{background:var(--surface-2);border-radius:6px;padding:.1em .35em;font-size:.92em}h1,h2{margin:0;line-height:1.2}.muted{color:var(--muted)}.center-screen{min-height:100%;padding:calc(24px + var(--safe-top)) 24px calc(24px + var(--safe-bottom));text-align:center;flex-direction:column;justify-content:center;align-items:center;gap:14px;display:flex}.center-screen p{max-width:34ch;margin:0}.login h1{letter-spacing:-.02em;font-size:2rem}.login .btn-google{margin-top:12px}.setup p{max-width:46ch}.splash-logo{animation:1.4s ease-in-out infinite pulse}@keyframes 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var(--accent);outline-offset:2px}.app-shell{flex-direction:column;min-height:100%;display:flex}.topbar{z-index:10;padding:calc(8px + var(--safe-top)) calc(12px + var(--safe-right)) 8px calc(16px + var(--safe-left));background:color-mix(in srgb, var(--bg) 88%, transparent);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;gap:12px;display:flex;position:sticky;top:0}.brand{align-items:center;gap:10px;font-size:1.1rem;font-weight:700;display:flex}.topbar-actions{align-items:center;gap:4px;display:flex}.content{padding:24px calc(16px + var(--safe-right)) calc(24px + var(--safe-bottom)) calc(16px + var(--safe-left));flex:1}.empty{text-align:center;max-width:40ch;color:var(--muted);flex-direction:column;align-items:center;gap:10px;margin:12vh auto 0;display:flex}.empty h2{color:var(--text)}.empty p{margin:0}.menu-anchor{position:relative}.avatar-btn{border:1px solid var(--border);background:var(--accent);width:36px;height:36px;color:var(--accent-text);cursor:pointer;border-radius:50%;margin:4px;padding:0;font-weight:700;overflow:hidden}.avatar-btn img{object-fit:cover;width:100%;height:100%}.menu{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);min-width:240px;max-width:calc(100vw - 24px);box-shadow:var(--shadow);padding:6px;position:absolute;top:calc(100% + 6px);right:0}.menu-header{border-bottom:1px solid var(--border);overflow-wrap:anywhere;flex-direction:column;margin-bottom:4px;padding:8px 10px 10px;display:flex}.menu-header .muted{font-size:.875rem}.menu-item{width:100%;min-height:var(--tap);cursor:pointer;text-align:left;background:0 0;border:0;border-radius:10px;align-items:center;gap:10px;padding:0 10px;display:flex}.menu-item:hover{background:var(--surface-2)}.toast{left:50%;bottom:calc(16px + var(--safe-bottom));z-index:100;background:var(--surface);border:1px solid var(--border);max-width:calc(100vw 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var(--border);touch-action:manipulation;z-index:2;align-items:center;gap:4px;display:flex}.editor-title{text-overflow:ellipsis;white-space:nowrap;text-align:left;cursor:text;background:0 0;border:0;border-radius:8px;flex:1;min-width:0;padding:6px 4px;font-weight:600;overflow:hidden}.editor-title:disabled{cursor:default;color:inherit}.editor-title:not(:disabled):hover{background:var(--surface-2)}.editor-title-input{min-width:0;font:inherit;border:1px solid var(--accent);background:var(--surface);color:var(--text);-webkit-user-select:text;user-select:text;border-radius:8px;flex:1;padding:6px 8px;font-weight:600}.editor-actions{align-items:center;gap:2px;display:flex}.zoom-btn{font-variant-numeric:tabular-nums;white-space:nowrap;min-width:68px}.mode-phone .zoom-btn{display:none}.mode-phone .people-btn{padding:0 8px}.board-wrap{flex:1;min-height:0;position:relative}.board{touch-action:none;overscroll-behavior:none;background:color-mix(in srgb, var(--bg) 92%, #888);cursor:crosshair;position:absolute;inset:0;overflow:hidden}.board-layer{pointer-events:none;transform-origin:0 0;position:absolute;top:0;left:0}.debug-panel{left:calc(8px + var(--safe-left));bottom:calc(8px + var(--safe-bottom));z-index:3;color:#fff;pointer-events:none;background:#000000b8;border-radius:10px;flex-wrap:wrap;gap:4px 12px;max-width:calc(100vw - 16px);padding:6px 12px;font:12px/1.4 ui-monospace,SFMono-Regular,Menlo,monospace;display:flex;position:fixed}.page-pill{right:calc(12px + var(--safe-right));bottom:calc(12px + var(--safe-bottom));z-index:2;color:#fff;font-variant-numeric:tabular-nums;pointer-events:none;background:#0009;border-radius:999px;padding:4px 12px;font-size:.85rem;position:fixed}.panel{z-index:5;top:calc(60px + var(--safe-top));right:calc(8px + var(--safe-right));width:340px;max-width:calc(100vw - 16px);max-height:calc(100% - 76px - var(--safe-top) - var(--safe-bottom));background:var(--surface);border:1px solid 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var(--surface);border-radius:50%;position:absolute;bottom:7px;right:7px}.tool-panel-desktop{left:50%;right:auto;transform:translate(-50%)}.tool-panel-tablet{top:50%;left:calc(76px + var(--safe-left));right:auto;transform:translateY(-50%)}.side-right .tool-panel-tablet{left:auto;right:calc(76px + var(--safe-right))}.panel-hint{color:var(--muted);margin:0;font-size:.88rem}.swatches-wrap{flex-wrap:wrap}.swatch-custom{background:conic-gradient(red,#ff0,#0f0,#0ff,#00f,#f0f,red);display:inline-block;position:relative}.swatch-custom.is-custom{box-shadow:0 0 0 2px var(--accent)}.swatch-custom input{opacity:0;cursor:pointer;width:100%;height:100%;position:absolute;inset:0}.swatch-small{width:28px;height:28px;margin:0 3px}.size-chip{place-items:center;width:52px;height:40px;padding:0;display:inline-grid}.size-chip span{border-radius:50%;display:block}.selection-bar{z-index:4;background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow);touch-action:manipulation;border-radius:14px;align-items:center;gap:2px;padding:4px;display:flex;position:fixed}.color-ring{background:conic-gradient(#1f1d1a 0 20%, #2f5bd3 0 40%, #d0342c 0 60%, #23875a 0 80%, #7b3fc4 0);border-radius:50%;width:20px;height:20px}.tool-eraser .board{cursor:none}.tool-lasso .board{cursor:default}.editor .menu{z-index:6}.icon-btn-small{width:36px;height:36px}.btn-primary-solid{background:var(--accent);border-color:var(--accent);color:var(--accent-text)}.btn-primary-solid:hover{background:color-mix(in srgb, var(--accent) 88%, black)}.btn-danger{background:var(--danger);border-color:var(--danger);color:#fff}.menu-item:disabled{opacity:.45;cursor:default}.menu-danger{color:var(--danger)}.sync-badge{width:32px;height:32px;color:var(--muted);flex-shrink:0;place-items:center;display:inline-grid}.sync-synced{color:#2e9d5b}.sync-offline{color:var(--danger)}.sync-syncing svg{animation:1.2s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}@media (prefers-reduced-motion:reduce){.sync-syncing svg{animation:none}}.modal-backdrop{z-index:50;background:#0006;place-items:center;padding:16px;display:grid;position:fixed;inset:0}.dialog{border-radius:var(--radius);background:var(--surface);width:min(420px,100%);box-shadow:var(--shadow);padding:20px}.dialog-title{margin-bottom:14px;font-size:1.15rem}.dialog-body{margin:0 0 8px}.dialog-actions{justify-content:flex-end;gap:8px;margin-top:18px;display:flex}.text-input{width:100%;min-height:var(--tap);font:inherit;color:var(--text);background:var(--bg);border:1px solid var(--border);border-radius:10px;padding:0 12px}.text-input:focus{outline:2px solid var(--accent);outline-offset:0}.export-options{flex-direction:column;align-items:flex-start;gap:10px;display:flex}.shortcuts{grid-template-columns:auto 1fr;gap:8px 16px;margin:0;font-size:.92rem;display:grid}.shortcuts dt{white-space:nowrap;font-weight:600}.shortcuts dd{color:var(--muted);margin:0}.home-page{min-height:100%;padding:var(--safe-top) var(--safe-right) var(--safe-bottom) var(--safe-left);overflow-y:auto}.home-top{justify-content:space-between;align-items:center;max-width:920px;margin:0 auto;padding:12px 16px;display:flex}.brand{letter-spacing:-.01em;align-items:center;gap:10px;font-size:1.25rem;font-weight:700;display:flex}.brand img{border-radius:9px}.home-main{max-width:920px;margin:0 auto;padding:8px 16px 40px}.home-lead{max-width:60ch;color:var(--muted);margin:0 0 20px;font-size:1.05rem}.field{flex-direction:column;gap:6px;min-width:0;margin:0;display:flex}.field>span,.field legend{font-size:.92rem;font-weight:600}.name-field{max-width:360px;margin-bottom:20px}.home-cards{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));align-items:start;gap:16px;display:grid}.home-card{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);flex-direction:column;gap:14px;padding:18px;display:flex}.home-card h2{align-items:center;gap:8px;font-size:1.1rem;display:flex}.home-card .error{margin:0}.code-input{letter-spacing:.12em;text-transform:uppercase;font-size:1.4rem;font-weight:600}.code-input::placeholder{letter-spacing:.12em;font-weight:400}.radio-group{border:0;gap:8px;padding:0}.radio-group legend{margin-bottom:6px;padding:0}.radio-group label{border:1px solid var(--border);cursor:pointer;border-radius:10px;align-items:flex-start;gap:10px;padding:10px 12px;display:flex}.radio-group label:has(input:checked){border-color:var(--accent);background:color-mix(in srgb, var(--accent) 8%, transparent)}.radio-group input{accent-color:var(--accent);margin-top:3px}.radio-group label>span{flex-direction:column;gap:2px;display:flex}.radio-group.compact{flex-flow:wrap;padding:0 16px}.radio-group.compact legend{width:100%}.radio-group.compact label{min-height:var(--tap);flex:1;align-items:center}.radio-group.compact input{margin-top:0}.recent{margin-top:32px}.recent h2{margin-bottom:10px;font-size:1.05rem}.recent ul{flex-direction:column;gap:4px;margin:0;padding:0;list-style:none;display:flex}.recent li{align-items:center;gap:4px;display:flex}.recent-item{min-width:0;min-height:52px;color:inherit;font:inherit;text-align:left;cursor:pointer;background:0 0;border:1px solid #0000;border-radius:10px;flex:1;align-items:center;gap:14px;padding:6px 12px;display:flex}.recent-item:hover{background:var(--surface);border-color:var(--border)}.recent-code{font-variant-numeric:tabular-nums;letter-spacing:.06em;color:var(--accent);white-space:nowrap;font-weight:700}.recent-title{text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;overflow:hidden}.badge{background:color-mix(in srgb, var(--accent) 15%, transparent);color:var(--accent);border-radius:999px;margin-left:8px;padding:1px 8px;font-size:.75rem;font-weight:600}.name-gate{text-align:left;flex-direction:column;align-items:stretch;gap:10px;width:min(320px,100%);display:flex}.people-btn{font-variant-numeric:tabular-nums;gap:6px}.board-banner{bottom:calc(12px + var(--safe-bottom));z-index:3;color:#fff;pointer-events:none;background:#000000b3;border-radius:999px;align-items:center;gap:8px;width:max-content;max-width:calc(100% - 24px);padding:6px 14px;font-size:.88rem;display:flex;position:absolute;left:50%;transform:translate(-50%)}.side-sheet-backdrop{z-index:40;background:#0000004d;position:fixed;inset:0}.side-sheet{width:min(380px,100%);padding:calc(8px + var(--safe-top)) var(--safe-right) calc(16px + var(--safe-bottom)) 0;background:var(--surface);box-shadow:var(--shadow);flex-direction:column;gap:12px;display:flex;position:absolute;top:0;bottom:0;right:0;overflow-y:auto}.side-sheet-head{justify-content:space-between;align-items:center;padding:0 8px 0 16px;display:flex}.side-sheet-head h2{font-size:1.15rem}.side-sheet-note{margin:0;padding:0 16px}.people{margin:0;padding:0 8px;list-style:none}.people li{border-radius:10px;align-items:center;gap:12px;min-height:56px;padding:6px 8px;display:flex}.avatar{color:#fff;opacity:.55;border-radius:50%;flex-shrink:0;place-items:center;width:38px;height:38px;font-size:.85rem;font-weight:700;display:grid;position:relative}.people li.is-online .avatar{opacity:1}.people li.is-online .avatar:after{content:"";border:2px solid var(--surface);background:#2e9d5b;border-radius:50%;width:11px;height:11px;position:absolute;bottom:-1px;right:-1px}.person{flex-direction:column;flex:1;min-width:0;display:flex}.person strong{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.person small{font-size:.8rem}.person-actions{align-items:center;gap:4px;display:flex}.switch{cursor:pointer;width:44px;height:26px;display:inline-block;position:relative}.switch input{opacity:0;cursor:pointer;margin:0;position:absolute;inset:0}.switch span{background:var(--border);pointer-events:none;border-radius:999px;transition:background .15s;position:absolute;inset:0}.switch span:after{content:"";background:#fff;border-radius:50%;width:20px;height:20px;transition:transform .15s;position:absolute;top:3px;left:3px;box-shadow:0 1px 2px #0000004d}.switch input:checked+span{background:var(--accent)}.switch input:checked+span:after{transform:translate(18px)}.switch input:focus-visible+span{outline:2px solid var(--accent);outline-offset:2px}.banned{border-top:1px solid var(--border);justify-content:space-between;align-items:center;gap:8px;margin:0 16px;padding-top:12px;display:flex}.banned h3{color:var(--muted);font-size:.9rem;font-weight:500}.share-code{letter-spacing:.14em;text-align:center;font-variant-numeric:tabular-nums;color:var(--accent);-webkit-user-select:all;user-select:all;margin:12px 0 16px;font-size:2.4rem;font-weight:700}.share-row{gap:8px;display:flex}.share-row .btn{flex-shrink:0;gap:6px}.share-native{gap:6px;width:100%;margin-top:8px}.admin-link{border-top:1px solid var(--border);flex-direction:column;align-items:flex-start;gap:8px;margin-top:16px;padding-top:12px;display:flex}.admin-link p{margin:0;font-size:.88rem}.admin-link .btn{gap:6px}.board-banner svg{flex-shrink:0}.banner-btn{color:inherit;font:inherit;cursor:pointer;pointer-events:auto;background:0 0;border:0;align-items:center;gap:8px;padding:0;display:inline-flex}.home-top-actions{align-items:center;gap:8px;display:flex}.home-top .menu{z-index:10}.home-login-error{max-width:920px;margin:0 auto;padding:0 16px}.home-hint{align-items:flex-start;gap:8px;max-width:60ch;margin:28px 0 0;font-size:.92rem;display:flex}.home-hint svg{flex-shrink:0;margin-top:3px}.boards{margin-top:32px}.boards h2{margin-bottom:12px;font-size:1.05rem}.boards>p{margin:0}.board-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:16px;margin:0;padding:0;list-style:none;display:grid}.board-card{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);color:inherit;flex-direction:column;text-decoration:none;transition:box-shadow .15s;display:flex;overflow:hidden}.board-card:hover{box-shadow:var(--shadow)}.board-thumb{aspect-ratio:1240/1754;border-bottom:1px solid var(--border);background:#fff;display:block}.board-thumb img{object-fit:cover;width:100%;height:100%;display:block}.board-info{flex-direction:column;gap:2px;min-width:0;padding:10px 12px 12px;display:flex}.board-info strong{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.board-info small{font-size:.82rem}@media (max-width:520px){.board-grid{grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:12px}.home-top .btn-google{padding:0 12px;font-size:.85rem}}.sel-primary{white-space:nowrap;gap:6px;margin-right:4px}.item-editor{z-index:5;transform-origin:0 0;position:absolute;top:0;left:0}.item-input{padding:calc(var(--pad) * var(--zoom,1) * 1px);min-width:calc(var(--size) * var(--zoom,1) * 2px);border:1.5px dashed var(--accent);background:color-mix(in srgb, var(--accent) 6%, transparent);color:inherit;font-size:calc(var(--size) * var(--zoom,1) * 1px);resize:none;white-space:pre;caret-color:var(--accent);border-radius:6px;outline:none;margin:0;display:block;overflow:hidden}.is-math .item-input{min-width:320px;font-size:max(16px, calc(var(--size) * var(--zoom,1) * .6px));color:var(--text);background:var(--surface);white-space:nowrap;font-family:ui-monospace,SFMono-Regular,Menlo,monospace!important}.item-input::placeholder{color:var(--muted);opacity:.8}.item-bar{background:var(--surface);color:var(--text);border:1px solid var(--border);box-shadow:var(--shadow);white-space:nowrap;border-radius:14px;align-items:center;gap:2px;padding:4px;display:flex;position:absolute;bottom:calc(100% + 8px);left:0}.is-math .item-bar{bottom:calc(100% + 56px)}.item-bar .btn{margin-left:4px}.item-bar-sep{background:var(--border);width:1px;height:24px;margin:0 4px}.size-glyph{font-size:20px;font-weight:700;line-height:1}.size-glyph.small{font-size:13px}.size-select{border:1px solid var(--border);background:var(--bg);min-height:36px;color:var(--text);font:inherit;border-radius:8px;padding:0 6px;font-size:.9rem}.swatch.is-on{box-shadow:0 0 0 2px var(--accent)}.symbol-bar{background:var(--surface);border:1px solid var(--border);max-width:min(640px,100vw - 24px);box-shadow:var(--shadow);border-radius:12px;gap:2px;padding:4px;display:flex;position:absolute;bottom:calc(100% + 8px);left:0;overflow-x:auto}.symbol-btn{min-width:38px;height:38px;color:var(--text);font:inherit;cursor:pointer;background:0 0;border:0;border-radius:8px;flex-shrink:0;padding:0 6px;font-size:1.05rem}.symbol-btn:hover{background:var(--surface-2)}.math-preview{background:color-mix(in srgb, var(--surface) 85%, transparent);border-radius:8px;min-height:32px;margin-top:6px;padding:4px 6px}.math-preview .error{font-size:.8rem;display:block}.math-svg svg{max-width:none;display:block}.tool-text .board{cursor:text}.tool-math .board{cursor:crosshair}.range-grid{grid-template-columns:1fr 1fr;gap:10px;margin-bottom:10px;display:grid}.compact-field>span{font-size:.85rem}.check-row{min-height:var(--tap);align-items:center;gap:8px;display:flex}.check-row input{width:18px;height:18px;accent-color:var(--accent)}.dialog-subtitle{margin:10px 0 8px;font-size:.95rem}.fn-row{flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:8px;display:flex}.fn-row .text-input{flex:1;min-width:0;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.fn-dot{border-radius:50%;flex-shrink:0;width:12px;height:12px}.fn-label{font-style:italic;font-weight:600}.fn-error{width:100%;padding-left:20px}.menu-kbd{border:1px solid var(--border);color:var(--muted);font:inherit;border-radius:6px;margin-left:auto;padding:1px 7px;font-size:.8rem}.toolbar .menu{z-index:8}.toolbar-tablet .menu{top:0;left:calc(100% + 10px);right:auto}.side-right .toolbar-tablet .menu{left:auto;right:calc(100% + 10px)}.item-bar,.symbol-bar{scrollbar-width:none;max-width:calc(100vw - 24px);overflow-x:auto}