:root{--ink: #151313;--paper: #fffaf0;--sun: #f4b400;--melon: #ff6f61;--mint: #4bbf9f;--line: #1f1a14;--surface: #ffffff;--muted: #534f46;--hero-card-bg: linear-gradient(150deg, #fff8e4 0%, #fff 55%, #f6fff7 100%);--hero-shadow: 10px 10px 0 #1f1a14;--status-bg: rgba(75, 191, 159, .12);--btn-ghost-text: var(--ink);--btn-primary-bg: var(--sun);--btn-primary-text: #1d1600;--radius: 14px}*{box-sizing:border-box}html,body{margin:0;width:100%;min-height:100%;font-family:Space Grotesk,sans-serif;color:var(--ink);background:radial-gradient(circle at 10% 10%,rgba(244,180,0,.2),transparent 45%),radial-gradient(circle at 90% 90%,rgba(255,111,97,.16),transparent 40%),var(--paper)}a{color:inherit}#app{width:100%;min-height:100vh;min-height:100dvh}.hero,.workspace,.history,.simple-view{width:100%;min-height:100vh;min-height:100dvh;padding:clamp(12px,2vw,24px);padding-top:clamp(76px,9vw,100px)}.hero{display:grid;place-items:center}.hero-card{width:min(920px,100%);border:2px solid var(--line);border-radius:28px;padding:40px;background:var(--hero-card-bg);box-shadow:var(--hero-shadow)}.eyebrow{margin:0;font-family:IBM Plex Mono,monospace;text-transform:uppercase;letter-spacing:.08em;font-size:.8rem}h1,h2{margin:.35rem 0 0;line-height:1.1}h1{font-size:clamp(2rem,4vw,3rem)}h2{font-size:clamp(1.2rem,2vw,1.5rem)}.lead{margin:1rem 0 0;max-width:60ch}.hero-actions,.toolbar-actions{display:flex;gap:10px;margin-top:22px;flex-wrap:wrap}.btn{border-radius:999px;border:2px solid var(--line);padding:10px 16px;font:inherit;color:var(--btn-ghost-text);font-weight:600;text-decoration:none;cursor:pointer;transition:transform .14s ease,box-shadow .14s ease}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--btn-primary-bg);color:var(--btn-primary-text);box-shadow:4px 4px 0 var(--line)}.btn-ghost{background:var(--surface)}.btn:hover:not(:disabled){transform:translate(-1px,-1px)}.toolbar,.history-head{display:flex;justify-content:space-between;gap:16px;align-items:flex-start;flex-wrap:wrap}.workspace{display:grid;grid-template-rows:auto auto minmax(0,1fr);gap:10px;height:100vh;height:100dvh;min-height:0}.status{margin:0;padding:8px 12px;border:1px dashed var(--line);border-radius:8px;background:var(--status-bg)}.editor-root{border:2px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--surface);height:100%;min-height:0}.editor-frame{width:100%;height:100%;min-height:100%;border:0;display:block}.history-list{list-style:none;padding:0;margin:16px 0 0;display:grid;gap:12px}.history-item{border:2px solid var(--line);background:var(--surface);border-radius:var(--radius);padding:14px}.commit-label{margin:0 0 6px;display:inline-block;font-family:IBM Plex Mono,monospace;font-size:.78rem;padding:2px 8px;border:1px solid var(--line);border-radius:999px;background:#f8e16c}.commit-meta{margin:4px 0 0;color:var(--muted)}.history-graph-wrap{margin-top:16px;border:2px solid var(--line);border-radius:var(--radius);background:var(--surface);overflow:auto;min-height:360px}.history-graph-canvas{position:relative}.history-graph-edges{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;pointer-events:none}.history-graph-edges path{fill:none;stroke:color-mix(in srgb,var(--line) 55%,transparent);stroke-width:2;stroke-linecap:round}.history-node{position:absolute;transform:translate(-50%,-50%);width:194px;padding:10px 12px;border:2px solid var(--line);border-radius:12px;background:var(--surface);color:inherit;text-decoration:none;box-shadow:4px 4px color-mix(in srgb,var(--line) 82%,transparent);display:grid;gap:4px}.history-node-id{font-size:.93rem;font-weight:600}.history-node-meta{font-size:.74rem;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.history-node.is-lineage{border-style:dashed}.history-node.is-root{background:color-mix(in srgb,var(--mint) 18%,var(--surface))}.history-node.is-current{background:color-mix(in srgb,var(--sun) 24%,var(--surface));box-shadow:5px 5px 0 var(--line)}.history-node:hover{transform:translate(-50%,-50%) translate(-1px,-1px)}.mono{font-family:IBM Plex Mono,monospace;overflow-wrap:anywhere}.simple-view{display:grid;place-items:center;text-align:center;gap:16px}.theme-toggle{position:fixed;right:16px;bottom:16px;z-index:30;text-transform:lowercase}.app-brand{position:fixed;top:14px;left:14px;z-index:35;display:inline-flex;align-items:center;gap:10px;padding:8px 14px 8px 10px;border:2px solid var(--line);border-radius:999px;background:color-mix(in srgb,var(--surface) 92%,transparent);box-shadow:4px 4px 0 var(--line);text-decoration:none}.app-brand-logo{width:28px;height:28px;display:block}.app-brand-name{font-size:.95rem;font-weight:700;letter-spacing:.01em}html[data-theme=dark]{--ink: #f0eee8;--paper: #121416;--sun: #e4b321;--line: #e5dfd3;--surface: #1a1f24;--muted: #c2bfb6;--hero-card-bg: linear-gradient(150deg, #20252c 0%, #1c2127 55%, #16211f 100%);--hero-shadow: 10px 10px 0 #090a0c;--status-bg: rgba(75, 191, 159, .2);--btn-ghost-text: #f0eee8;--btn-primary-bg: #9f7608;--btn-primary-text: #ffffff}html[data-theme=dark] body{background:radial-gradient(circle at 10% 10%,rgba(244,180,0,.18),transparent 45%),radial-gradient(circle at 90% 90%,rgba(255,111,97,.12),transparent 40%),var(--paper)}@media(max-width:760px){.hero-card{padding:28px;box-shadow:6px 6px 0 var(--line)}}