:root {
    --navy: #0a2a6b;
    --blue: #1854c4;
    --yellow: #fed500;
    --bg: #f4f6fb;
    --border: #e1e5ee;
    --text: #1c2536;
    --muted: #6b7488;
    --green: #1e9e5a;
    --red: #d94343;
}
* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
}
.topbar {
    background: var(--navy);
    color: #fff;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.topbar h1 { font-size: 18px; margin: 0; font-weight: 600; }
.topbar nav a {
    color: #cdd8f5;
    text-decoration: none;
    margin-left: 20px;
    font-size: 14px;
}
.topbar nav a:hover, .topbar nav a.active { color: #fff; font-weight: 600; }
.wrap { max-width: 960px; margin: 32px auto; padding: 0 20px; }
.card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 20px;
}
.card h2 { margin-top: 0; font-size: 16px; color: var(--navy); }
.badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 600;
}
.badge.on { background: #e5f8ee; color: var(--green); }
.badge.off { background: #fdeaea; color: var(--red); }
.btn {
    display: inline-block;
    background: var(--blue);
    color: #fff;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 14px;
    cursor: pointer;
    text-decoration: none;
}
.btn:hover { background: var(--navy); }
.btn.secondary { background: #eef1f8; color: var(--navy); }
.btn.secondary:hover { background: #dde3f3; }
input[type=text], input[type=password], select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    margin-top: 6px;
    margin-bottom: 16px;
}
label { font-size: 13px; font-weight: 600; color: var(--muted); }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; }
.thumb { width: 56px; height: 70px; object-fit: cover; border-radius: 4px; border: 1px solid var(--border); }
.alert { padding: 12px 16px; border-radius: 8px; font-size: 14px; margin-bottom: 16px; }
.alert.error { background: #fdeaea; color: var(--red); }
.alert.success { background: #e5f8ee; color: var(--green); }
.qr-box { text-align: center; padding: 20px; }
.qr-box img { width: 260px; height: 260px; border: 8px solid #fff; box-shadow: 0 0 0 1px var(--border); border-radius: 8px; }
.muted { color: var(--muted); font-size: 13px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 640px) { .grid2 { grid-template-columns: 1fr; } }