:root{color-scheme:light;font-family:Segoe UI,Tahoma,sans-serif;--bg: #f3f4f6;--panel: #ffffff;--text: #0f172a;--muted: #64748b;--border: #e2e8f0;--accent: #0f766e}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}a{color:inherit;text-decoration:none}.layout{display:grid;grid-template-columns:240px 1fr;min-height:100vh}.sidebar{background:#111827;color:#e5e7eb;padding:16px;display:flex;flex-direction:column;gap:12px}.sidebar h2{margin:0 0 12px;font-size:18px}.sidebar nav{display:grid;gap:6px}.sidebar nav a{padding:8px;border-radius:6px;color:#cbd5e1}.sidebar nav a.active{background:#0f766e;color:#ecfeff}.sidebar .logout{margin-top:12px;width:100%;border:0;padding:8px;border-radius:6px;background:#334155;color:#f8fafc;cursor:pointer}.main{padding:20px}.main h1{margin:0 0 16px;font-size:24px}.card{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:12px;margin-bottom:12px}.card h3{margin:0 0 8px;font-size:14px;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}pre{margin:0;white-space:pre-wrap;word-break:break-word;font-size:12px}.grid-table{width:100%;border-collapse:collapse;font-size:13px}.grid-table th,.grid-table td{border-top:1px solid var(--border);padding:8px 6px;text-align:left;vertical-align:top}.grid-table .actions{display:flex;flex-wrap:wrap;gap:6px}.grid-table .actions form{margin:0}.grid-table button{border:1px solid var(--border);background:#f8fafc;padding:6px 8px;border-radius:6px;cursor:pointer}.grid-table button.danger{border-color:#fecaca;background:#fff1f2;color:#9f1239}.ok{color:#0f766e;margin:0 0 8px}.err{color:#b91c1c;margin:0 0 8px}.login-wrap{max-width:520px;margin:80px auto;background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:20px}.login-wrap form{display:grid;gap:10px}.login-wrap input,.login-wrap button{padding:10px;border-radius:8px;border:1px solid var(--border)}.login-wrap button{background:var(--accent);color:#fff;border:0;cursor:pointer}@media (max-width: 900px){.layout{grid-template-columns:1fr}.sidebar{position:sticky;top:0;z-index:10}}