:root{--bg: #0f172a;--bg-soft: #1e293b;--panel: #ffffff;--ink: #0f172a;--muted: #64748b;--line: #e2e8f0;--brand: #2563eb;--brand-dark: #1d4ed8;--green: #16a34a;--red: #dc2626;--amber: #d97706;--shadow: 0 1px 3px rgba(0, 0, 0, .1)}*{box-sizing:border-box}body{margin:0;font-family:Segoe UI,system-ui,-apple-system,sans-serif;background:#f1f5f9;color:var(--ink)}a{color:var(--brand);text-decoration:none}.app{display:flex;min-height:100vh}.sidebar{width:230px;background:var(--bg);color:#cbd5e1;display:flex;flex-direction:column;position:sticky;top:0;height:100vh}.sidebar .brand{padding:18px 20px;font-weight:700;color:#fff;font-size:16px;border-bottom:1px solid #334155}.sidebar nav{flex:1;padding:8px 0;overflow-y:auto}.sidebar nav a{display:block;padding:10px 20px;color:#cbd5e1;font-size:14px;border-left:3px solid transparent}.sidebar nav a:hover{background:var(--bg-soft);color:#fff}.sidebar nav a.active{background:var(--bg-soft);color:#fff;border-left-color:var(--brand)}.sidebar .foot{padding:14px 20px;border-top:1px solid #334155;font-size:13px}.main{flex:1;min-width:0}.topbar{background:#fff;border-bottom:1px solid var(--line);padding:14px 24px;display:flex;justify-content:space-between;align-items:center}.content{padding:24px}h1{font-size:20px;margin:0 0 4px}h2{font-size:16px;margin:0 0 12px}.sub{color:var(--muted);font-size:13px;margin:0 0 18px}.grid{display:grid;gap:16px}.cards{grid-template-columns:repeat(auto-fill,minmax(190px,1fr))}.card{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:16px;box-shadow:var(--shadow)}.stat .num{font-size:28px;font-weight:700}.stat .lbl{color:var(--muted);font-size:13px;margin-top:4px}table{width:100%;border-collapse:collapse;background:#fff;border-radius:10px;overflow:hidden;box-shadow:var(--shadow)}th,td{text-align:left;padding:10px 12px;font-size:13px;border-bottom:1px solid var(--line)}th{background:#f8fafc;color:var(--muted);font-weight:600}tr:last-child td{border-bottom:none}.badge{display:inline-block;padding:2px 8px;border-radius:999px;font-size:12px;font-weight:600}.badge.green{background:#dcfce7;color:#166534}.badge.red{background:#fee2e2;color:#991b1b}.badge.amber{background:#fef3c7;color:#92400e}.badge.gray{background:#e2e8f0;color:#475569}.badge.blue{background:#dbeafe;color:#1e40af}label{display:block;font-size:13px;font-weight:600;margin:12px 0 4px}input,select,textarea{width:100%;padding:9px 11px;border:1px solid var(--line);border-radius:8px;font-size:14px;font-family:inherit}input:focus,select:focus{outline:2px solid var(--brand);border-color:var(--brand)}.btn{display:inline-flex;align-items:center;gap:6px;padding:9px 14px;border:none;border-radius:8px;background:var(--brand);color:#fff;font-size:14px;font-weight:600;cursor:pointer}.btn:hover{background:var(--brand-dark)}.btn.ghost{background:#fff;color:var(--ink);border:1px solid var(--line)}.btn.ghost:hover{background:#f8fafc}.btn.danger{background:var(--red)}.btn.small{padding:6px 10px;font-size:13px}.btn:disabled{opacity:.55;cursor:not-allowed}.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 18px}.alert{padding:11px 14px;border-radius:8px;font-size:14px;margin:10px 0}.alert.ok{background:#dcfce7;color:#166534}.alert.err{background:#fee2e2;color:#991b1b}.alert.info{background:#dbeafe;color:#1e40af}.login-wrap{min-height:100vh;display:grid;place-items:center;background:var(--bg)}.login-card{width:360px;background:#fff;border-radius:14px;padding:30px;box-shadow:0 10px 40px #0000004d}.login-card h1,.login-card .sub{text-align:center}.muted{color:var(--muted)}.mono{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12px;background:#f1f5f9;padding:2px 6px;border-radius:5px;word-break:break-all}.dot{width:9px;height:9px;border-radius:50%;display:inline-block;margin-right:6px}.dot.on{background:var(--green)}.dot.off{background:var(--red)}pre.code{background:var(--bg);color:#e2e8f0;padding:14px;border-radius:8px;overflow-x:auto;font-size:12px;line-height:1.5}