:root{--bg: #f4f6f9;--card: #ffffff;--border: #dfe3eb;--text: #1f2733;--muted: #6b7585;--primary: #2563eb;--primary-d: #1d4ed8;--danger: #dc2626;--ok: #16a34a;--radius: 8px;--shadow: 0 1px 3px rgba(16, 24, 40, .08), 0 1px 2px rgba(16, 24, 40, .04)}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;color:var(--text);background:var(--bg);font-size:14px;line-height:1.5}.app-header{display:flex;align-items:center;gap:16px;padding:12px 20px;background:#0f172a;color:#f8fafc;box-shadow:var(--shadow)}.brand{font-weight:700;font-size:16px}.header-nav{display:flex;gap:14px}.header-nav a{color:#cbd5e1;text-decoration:none;font-size:13px}.header-nav a:hover{color:#fff;text-decoration:underline}.user-box{margin-left:auto;display:flex;align-items:center;gap:12px}.username{font-size:13px;color:#e2e8f0}main{max-width:1100px;margin:24px auto;padding:0 16px}.view-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;flex-wrap:wrap;gap:10px}.view-head h2{margin:0;font-size:20px}.actions{display:flex;gap:8px}.centered{display:flex;justify-content:center;padding-top:60px}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}.login-card{max-width:360px;width:100%;text-align:center}.login-card h2{margin-top:0}.btn{border:1px solid transparent;border-radius:6px;padding:7px 14px;font-size:13px;font-weight:600;cursor:pointer;background:#e5e7eb;color:var(--text)}.btn:hover{filter:brightness(.97)}.btn:disabled{opacity:.6;cursor:default}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-d);filter:none}.btn-ghost{background:transparent;border-color:var(--border);color:inherit}.app-header .btn-ghost{color:#e2e8f0;border-color:#334155}.btn-sm{padding:4px 9px;font-size:12px}.btn-danger{background:transparent;color:var(--danger);border-color:#f3c2c2}.btn-danger:hover{background:#fee2e2}.table-wrap{overflow-x:auto;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}table.grid{width:100%;border-collapse:collapse}table.grid th,table.grid td{text-align:left;padding:9px 12px;border-bottom:1px solid var(--border);white-space:nowrap}table.grid th{background:#f8fafc;font-size:12px;text-transform:uppercase;letter-spacing:.03em;color:var(--muted)}table.grid tbody tr:hover{background:#f8fafc}.actions-col{width:1%}td.row-actions{display:flex;gap:6px}.badge{display:inline-block;padding:1px 8px;border-radius:999px;font-size:12px;font-weight:600}.badge.on{background:#dcfce7;color:var(--ok)}.badge.off{background:#fee2e2;color:var(--danger)}.form fieldset{border:1px solid var(--border);border-radius:var(--radius);margin:0 0 16px;padding:14px 16px}.form legend{font-weight:700;font-size:13px;padding:0 6px;color:var(--muted);text-transform:uppercase;letter-spacing:.03em}.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px 18px}.form label{display:flex;flex-direction:column;font-size:12px;font-weight:600;color:var(--muted);gap:4px}.form label.check{flex-direction:row;align-items:center;gap:8px;font-size:13px;color:var(--text)}.form input,.form select{font:inherit;padding:7px 9px;border:1px solid var(--border);border-radius:6px;background:#fff;color:var(--text);width:100%}.form label.check input{width:auto}.form input:focus,.form select:focus{outline:2px solid var(--primary);outline-offset:-1px;border-color:var(--primary)}.hint{font-weight:400;color:var(--muted)}.req{color:var(--danger)}.form-actions{display:flex;gap:10px;margin-top:4px}.form-error{background:#fee2e2;color:#991b1b;border:1px solid #fca5a5;border-radius:6px;padding:10px 12px;margin-bottom:14px;white-space:pre-wrap}.link{color:var(--primary);text-decoration:none;font-size:13px;cursor:pointer;background:none;border:none;padding:0;font:inherit}.link:hover{text-decoration:underline}.muted{color:var(--muted)}.toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%);background:#0f172a;color:#fff;padding:11px 18px;border-radius:8px;box-shadow:0 6px 20px #00000040;font-size:13px;z-index:100;max-width:90vw}.toast.ok{background:#166534}.toast.err{background:#991b1b}