/* Dashboard CSS with CSS Grid layout and responsive design */

:root {
    --bg-primary: #f8fafc;
    --bg-card: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --accent-blue: #2563eb;
    --accent-green: #16a34a;
    --accent-red: #dc2626;
    --accent-orange: #ea580c;
    --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: system-ui, -apple-system, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow);
}

header h1 {
    margin: 0;
    font-size: 1.5rem;
    color: var(--text-primary);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.last-updated {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.logout-btn {
    padding: 0.5rem 1rem;
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.logout-btn:hover {
    border-color: var(--accent-red);
    color: var(--accent-red);
}

/* Dashboard Grid Layout */
.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    padding: 1.5rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

/* Panel Cards */
.panel {
    background: var(--bg-card);
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.panel h2 {
    margin: 0 0 1rem 0;
    font-size: 1.1rem;
    color: var(--text-primary);
}

/* WAN Status Panel (Full Width) */
.wan-panel {
    grid-column: 1 / -1;
}

.wan-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.wan-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.wan-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
}

.wan-value {
    font-size: 1.1rem;
    font-weight: 600;
}

/* Bandwidth Panel */
.chart-container {
    position: relative;
    height: 300px;
}

/* Devices Panel */
.device-count {
    font-weight: normal;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.table-wrapper {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

th {
    text-align: left;
    padding: 0.75rem;
    border-bottom: 2px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

td {
    padding: 0.75rem;
    border-bottom: 1px solid var(--border-color);
}

tr:last-child td {
    border-bottom: none;
}

.loading {
    text-align: center;
    color: var(--text-secondary);
    padding: 2rem;
}

/* Status Indicators */
.status-online {
    color: var(--accent-green);
    font-weight: 600;
}

.status-offline {
    color: var(--text-secondary);
}

/* Stale Warning */
.stale-warning {
    color: var(--accent-orange);
    font-size: 0.8rem;
    margin-top: 0.5rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
        padding: 1rem;
    }

    .wan-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    header {
        padding: 1rem;
    }

    header h1 {
        font-size: 1.2rem;
    }
}