:root,[data-theme=dark]{--bg: #0e0e0e;--card: #1a1a1a;--field: #141414;--fg: #f2f2f2;--muted: #9a9a9a;--border: #2c2c2c;--accent: #f2f2f2;--accent-fg: #0e0e0e;--danger: #c9c9c9;--danger-border: #6a6a6a}[data-theme=light]{--bg: #ffffff;--card: #f6f6f6;--field: #ffffff;--fg: #111111;--muted: #666666;--border: #dcdcdc;--accent: #111111;--accent-fg: #ffffff;--danger: #444444;--danger-border: #999999}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.5 system-ui,-apple-system,sans-serif}.app{max-width:680px;margin:0 auto;padding:0 16px 64px}.topbar{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px;padding:16px 0;border-bottom:1px solid var(--border);margin-bottom:24px}.brand{font-weight:700;font-size:20px;color:var(--fg);text-decoration:none}nav{display:flex;gap:12px;align-items:center;flex-wrap:wrap}nav a{color:var(--fg);text-decoration:none}nav a:hover{text-decoration:underline}.subnav{display:flex;gap:4px;border-bottom:1px solid var(--border);margin-bottom:24px;overflow-x:auto;white-space:nowrap;-webkit-overflow-scrolling:touch}.subnav a{color:var(--muted);text-decoration:none;padding:10px 14px;min-height:44px;display:inline-flex;align-items:center;border-bottom:2px solid transparent;margin-bottom:-1px}.subnav a.active{color:var(--fg);border-bottom-color:var(--fg);font-weight:600}h1,h2{margin:0 0 8px}h3{margin:0}.muted{color:var(--muted)}.error{color:var(--fg);font-weight:600}.stack{display:flex;flex-direction:column;gap:16px}.row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.row.between{justify-content:space-between}.card,.block{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:16px}.block{position:relative}.block.editing{border-color:var(--muted)}.page-header{display:flex;justify-content:space-between;align-items:flex-start;flex-wrap:wrap;gap:16px}.block-head{display:flex;gap:8px;align-items:center}.block-actions{position:absolute;top:12px;right:12px}.badge{font-size:12px;color:var(--muted);border:1px solid var(--border);border-radius:999px;padding:1px 8px}.body{white-space:pre-wrap}.block .title-input{font-size:1.5em;font-weight:700}label{display:flex;flex-direction:column;gap:4px;font-size:14px;color:var(--muted)}input,textarea,select{background:var(--field);color:var(--fg);border:1px solid var(--border);border-radius:8px;padding:8px 10px;font:inherit;width:100%}textarea{min-height:80px;resize:vertical}button{background:var(--accent);color:var(--accent-fg);border:none;border-radius:8px;padding:8px 14px;font:inherit;font-weight:600;cursor:pointer;white-space:nowrap;min-height:44px}button.link{background:none;color:var(--fg);padding:0;font-weight:500;min-height:auto}button.danger{background:transparent;color:var(--danger);border:1px solid var(--danger-border)}.icon-btn{background:transparent;color:var(--muted);border:none;border-radius:8px;padding:0;width:44px;height:44px;min-height:44px;display:inline-flex;align-items:center;justify-content:center;cursor:pointer}.icon-btn:hover{color:var(--fg);background:var(--field)}.add-block{width:100%;min-height:48px;background:transparent;color:var(--muted);border:1px dashed var(--border);border-radius:10px;font-weight:600;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:8px}.add-block:hover{color:var(--fg);border-color:var(--muted)}@media (max-width: 480px){.app{padding:0 12px 48px}}