:root{--bg: #0f172a;--bg-soft: #1e293b;--panel: #ffffff;--line: #e5e7eb;--text: #0f172a;--muted: #64748b;--primary: #4f46e5;--primary-d: #4338ca;--danger: #dc2626;--radius: 12px}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:#f1f5f9;color:var(--text)}a{color:var(--primary);text-decoration:none}.app{display:flex;min-height:100vh}.sidebar{width:240px;background:var(--bg);color:#cbd5e1;padding:20px 14px;display:flex;flex-direction:column;gap:6px}.brand{color:#fff;font-size:20px;font-weight:700;padding:6px 10px 18px}.brand span{color:#818cf8}.nav-link{color:#cbd5e1;padding:10px 12px;border-radius:8px;font-size:14px;cursor:pointer;display:block}.nav-link:hover{background:var(--bg-soft);color:#fff}.nav-link.active{background:var(--primary);color:#fff}.sidebar-foot{margin-top:auto;font-size:12px;color:#64748b}.content{flex:1;padding:28px 32px;max-width:1100px}.page-title{font-size:24px;font-weight:700;margin:0 0 4px}.page-sub{color:var(--muted);margin:0 0 22px;font-size:14px}.row-between{display:flex;align-items:center;justify-content:space-between}.btn{border:none;border-radius:8px;padding:9px 16px;font-size:14px;font-weight:600;cursor:pointer;background:var(--primary);color:#fff}.btn:hover{background:var(--primary-d)}.btn.secondary{background:#e2e8f0;color:#0f172a}.btn.secondary:hover{background:#cbd5e1}.btn.danger{background:var(--danger)}.btn.ghost{background:transparent;color:var(--muted)}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-sm{padding:6px 10px;font-size:13px}.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:18px;margin-bottom:16px}.table{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line)}.table th,.table td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);font-size:14px}.table th{background:#f8fafc;color:var(--muted);font-weight:600}.table tr:last-child td{border-bottom:none}.table tr:hover td{background:#fafafa}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}.field.full{grid-column:1 / -1}.field label{font-size:13px;font-weight:600;color:#334155}.field input,.field textarea{border:1px solid var(--line);border-radius:8px;padding:10px 12px;font-size:14px;font-family:inherit;outline:none}.field input:focus,.field textarea:focus{border-color:var(--primary)}.field .hint{font-size:12px;color:var(--muted)}textarea{resize:vertical;min-height:80px}.color-row{display:flex;gap:12px}.color-row .field{flex:1}.color-input{display:flex;align-items:center;gap:8px}.color-input input[type=color]{width:42px;height:38px;padding:2px;border-radius:8px}.badge{display:inline-block;padding:2px 9px;border-radius:999px;font-size:12px;font-weight:600}.badge.on{background:#dcfce7;color:#166534}.badge.off{background:#fee2e2;color:#991b1b}.muted{color:var(--muted)}.error{background:#fee2e2;color:#991b1b;padding:10px 14px;border-radius:8px;font-size:14px;margin-bottom:14px}.empty{text-align:center;color:var(--muted);padding:40px}.spinner{padding:40px;text-align:center;color:var(--muted)}.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#4f46e5,#0ea5e9)}.login-card{background:#fff;padding:32px;border-radius:16px;width:360px;box-shadow:0 20px 60px #00000040}.login-card h1{margin:0 0 4px;font-size:22px}.login-card p{margin:0 0 20px;color:var(--muted);font-size:14px}.msg{display:flex;margin-bottom:10px}.msg.user{justify-content:flex-end}.msg .bubble{max-width:70%;padding:10px 13px;border-radius:12px;font-size:14px;white-space:pre-wrap}.msg.assistant .bubble{background:#f1f5f9}.msg.user .bubble{background:var(--primary);color:#fff}@media (max-width: 760px){.app{flex-direction:column}.sidebar{width:100%;flex-direction:row;flex-wrap:wrap}.sidebar-foot{display:none}.form-grid{grid-template-columns:1fr}.content{padding:18px}}