* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #0f172a;
    color: #e5e7eb;
}

.page {
    padding: 24px;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 24px;
}

h1 {
    margin: 0;
    font-size: 30px;
}

p {
    color: #94a3b8;
    margin: 8px 0 0;
}

.meta {
    text-align: right;
    color: #94a3b8;
    font-size: 14px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
    gap: 18px;
}

.card {
    background: #111827;
    border: 1px solid #1f2937;
    border-radius: 18px;
    padding: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.25);
}

.card.live {
    border-color: #ef4444;
}

.card.monitoring {
    border-color: #22c55e;
}

.card.offline {
    border-color: #6b7280;
}

.card.no_heartbeat {
    border-color: #f97316;
}

.card.off_hours {
    border-color: #eab308;
}

.card-top {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 16px;
}

.camera-name {
    font-size: 20px;
    font-weight: 700;
}

.camera-code {
    color: #94a3b8;
    font-size: 13px;
    margin-top: 4px;
}

.badge {
    padding: 6px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 700;
    white-space: nowrap;
}

.badge.live {
    background: #7f1d1d;
    color: #fecaca;
}

.badge.monitoring {
    background: #14532d;
    color: #bbf7d0;
}

.badge.offline {
    background: #374151;
    color: #e5e7eb;
}

.badge.no_heartbeat {
    background: #7c2d12;
    color: #fed7aa;
}

.badge.off_hours {
    background: #713f12;
    color: #fef3c7;
}

.metrics {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.metric {
    background: #020617;
    border-radius: 12px;
    padding: 12px;
}

.label {
    color: #94a3b8;
    font-size: 12px;
}

.value {
    margin-top: 4px;
    font-size: 18px;
    font-weight: 700;
}

.footer {
    margin-top: 14px;
    padding-top: 14px;
    border-top: 1px solid #1f2937;
    color: #94a3b8;
    font-size: 13px;
}

.loading {
    color: #94a3b8;
}

@media (max-width: 640px) {
    .page {
        padding: 16px;
    }

    header {
        flex-direction: column;
    }

    .meta {
        text-align: left;
    }
}