:root{color-scheme:light;--bg:#f6f7f9;--panel:#fff;--text:#1e252e;--muted:#667085;--line:#d8dee8;--accent:#0f766e}*{box-sizing:border-box}body{margin:0;min-height:100vh;display:grid;grid-template-columns:248px 1fr;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}.sidebar{background:#111827;color:#f9fafb;padding:24px 16px}.brand{font-size:22px;font-weight:750;margin-bottom:28px}nav{display:grid;grid-gap:4px;gap:4px}nav a{display:flex;align-items:center;gap:10px;min-height:42px;padding:0 12px;color:#d1d5db;text-decoration:none;border-radius:6px}nav a:hover{background:#1f2937;color:#fff}main{padding:32px}h1{margin:0;font-size:28px;letter-spacing:0}p{color:var(--muted)}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));grid-gap:16px;gap:16px;margin-top:24px}.card,.panel{background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:18px}.card{display:grid;grid-gap:10px;gap:10px}.card svg{color:var(--accent)}.card span{color:var(--muted);font-size:14px}.card strong{font-size:20px}table{width:100%;margin-top:24px;border-collapse:collapse;background:var(--panel);border:1px solid var(--line);border-radius:8px;overflow:hidden}th{text-align:left;color:var(--muted);font-size:13px;padding:14px;border-bottom:1px solid var(--line)}@media (max-width:760px){body{grid-template-columns:1fr}.sidebar{position:static}}.narrow{max-width:720px}.form{display:grid;grid-gap:12px;gap:12px;margin-top:20px}.form label{display:grid;grid-gap:6px;gap:6px;color:var(--muted);font-size:14px}button,input,select{min-height:40px;border:1px solid var(--line);border-radius:6px;padding:0 12px;font:inherit}button{background:var(--accent);color:#fff;border-color:var(--accent);cursor:pointer}.inline-form{grid-template-columns:repeat(auto-fit,minmax(160px,1fr));align-items:end}td{padding:12px 14px;border-bottom:1px solid var(--line)}.notice{color:var(--accent);font-weight:650}.stack{display:grid;grid-gap:10px;gap:10px}code{overflow-wrap:anywhere;background:#eef2f7;padding:4px 6px;border-radius:4px}.chat-layout{display:grid;grid-template-columns:minmax(260px,340px) 1fr;grid-gap:16px;gap:16px;margin-top:24px}.list-button{width:100%;text-align:left;background:#eef2f7;color:var(--text);border-color:var(--line)}.chat-panel{display:grid;grid-template-rows:auto 1fr auto;min-height:640px}.messages{display:grid;align-content:start;grid-gap:10px;gap:10px;overflow:auto;padding:16px 0}.message{background:#f8fafc;border:1px solid var(--line);border-radius:8px;padding:10px 12px}.message small,.message span{color:var(--muted);font-size:12px}.message p{margin:4px 0;color:var(--text)}.composer{display:grid;grid-template-columns:1fr 96px;grid-gap:10px;gap:10px}@media (max-width:900px){.chat-layout{grid-template-columns:1fr}}