:root{color-scheme:dark;--bg: #0f172a;--surface: #1e293b;--text: #e2e8f0;--muted: #94a3b8;--line: #334155;--accent: #0369a1;--accent-text: #f8fafc;--ok: #166534;--warn: #b45309;--danger: #b91c1c;--shadow: 0 8px 24px rgb(15 23 42 / 35%);font-family:Segoe UI,sans-serif;font-size:16px;line-height:1.5}:root[data-theme=light]{color-scheme:light;--bg: #f8fafc;--surface: #ffffff;--text: #0f172a;--muted: #475569;--line: #e2e8f0;--accent: #0369a1;--accent-text: #f8fafc;--shadow: 0 8px 24px rgb(15 23 42 / 8%)}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}button,input,select,textarea{font:inherit;color:inherit}button,.nav a{min-height:44px;border-radius:8px;border:1px solid transparent;background:transparent;cursor:pointer}button:hover,.nav a:hover{background:color-mix(in srgb,var(--surface) 70%,var(--line))}button:active{transform:translateY(1px)}button:disabled{opacity:.5;cursor:not-allowed}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.primary{background:var(--accent);color:var(--accent-text)}.primary:hover{filter:brightness(1.08)}.danger{background:var(--danger);color:#fff}.app{display:grid;grid-template-columns:220px 1fr;min-height:100vh}.nav{display:flex;flex-direction:column;gap:8px;padding:16px;border-right:1px solid var(--line);background:var(--surface)}.nav a{display:flex;align-items:center;padding:8px 16px;text-decoration:none;color:var(--text)}.nav a[aria-current=page]{background:color-mix(in srgb,var(--accent) 20%,var(--surface))}.brand{font-size:20px;font-weight:650;margin:0 0 8px}main{padding:24px;max-width:960px}.stack{display:grid;gap:16px}.row{display:flex;flex-wrap:wrap;gap:8px;align-items:center}.panel{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:16px}h1{font-size:30px;line-height:1.2;margin:0}h2{font-size:20px;margin:0}p{margin:0}.muted{color:var(--muted)}.banner{padding:8px 16px;border-radius:8px;background:color-mix(in srgb,var(--warn) 18%,var(--surface))}.ok{background:color-mix(in srgb,var(--ok) 18%,var(--surface))}.error{background:color-mix(in srgb,var(--danger) 18%,var(--surface))}label{display:grid;gap:8px;font-size:14px}input,select,textarea{min-height:44px;border:1px solid var(--line);border-radius:8px;background:var(--bg);padding:8px 16px}textarea{min-height:88px}.chat{display:grid;gap:8px}.bubble{padding:16px;border-radius:8px;background:var(--bg);border:1px solid var(--line);white-space:pre-wrap}.bubble.user{margin-left:48px}.composer{display:grid;grid-template-columns:1fr auto auto;gap:8px}.bars{display:grid;gap:8px}.bar{display:grid;grid-template-columns:140px 1fr auto;gap:8px;align-items:center}.track{height:8px;background:var(--line);border-radius:8px;overflow:hidden}.fill{height:100%;background:var(--accent)}table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:8px;border-bottom:1px solid var(--line);vertical-align:top}.mono{font-variant-numeric:tabular-nums}.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}@media(max-width:800px){.app{grid-template-columns:1fr}.nav{position:sticky;bottom:0;top:auto;flex-direction:row;overflow:auto;border-right:0;border-top:1px solid var(--line);order:2}.brand,.nav .status-line{display:none}main{order:1;padding:16px}}@media(prefers-reduced-motion:reduce){*{transition:none!important}}