:root {
    --primary-color: #006FFF;
    --secondary-color: #00439C;
    --background-color: #f8f9fa;
    --card-background: #ffffff;
    --text-color: #2c3e50;
    --border-radius: 12px;
}

body {
    font-family: 'Inter', -apple-system, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    margin: 0;
    padding: 0;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

.header {
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 20px;
    border-radius: var(--border-radius);
    margin-bottom: 30px;
}

.metrics-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 25px;
    margin-top: 20px;
}

.metric-card {
    background: var(--card-background);
    padding: 25px;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 6px rgba(0,0,0,0.07);
    transition: transform 0.2s ease;
}

.metric-card:hover {
    transform: translateY(-5px);
}

.device-status {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 10px 0;
}

.status-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.status-up {
    background-color: #10B981;
}

.status-down {
    background-color: #EF4444;
}

.diagnostics-panel {
    margin-top: 15px;
}

.diagnostic-item {
    padding: 10px;
    border-left: 4px solid var(--primary-color);
    margin: 10px 0;
    background: rgba(0,111,255,0.1);
}

.fiber-diagnostic {
    border-color: #10B981;
}

.copper-diagnostic {
    border-color: #F59E0B;
}

.device-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.device-details {
    font-size: 0.8em;
    color: #666;
}

.diagnostic-details {
    display: grid;
    gap: 15px;
    padding: 10px;
}

.status-group, .firmware-group, .interfaces-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.interface-item {
    display: flex;
    align-items: center;
    gap: 10px;
}

.label {
    font-weight: 500;
    color: #666;
}

.value {
    font-family: monospace;
}
.interface-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    cursor: pointer;
    background: rgba(0,111,255,0.05);
    border-radius: 8px;
    margin-bottom: 5px;
}

.interface-header:hover {
    background: rgba(0,111,255,0.1);
}

.interface-list {
    max-height: 500px;
    overflow-y: auto;
    transition: max-height 0.3s ease-out;
}

.interface-list.collapsed {
    max-height: 0;
    overflow: hidden;
}

.interface-item {
    display: grid;
    grid-template-columns: 1fr 1fr auto;
    padding: 8px;
    border-bottom: 1px solid #eee;
    align-items: center;
}

.port-status {
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.8em;
    font-weight: 500;
}

.port-status.up {
    background-color: #10B981;
    color: white;
}

.port-status.down {
    background-color: #EF4444;
    color: white;
}

.expand-icon {
    transition: transform 0.3s ease;
}

.collapsed + .expand-icon {
    transform: rotate(-90deg);
}

.port-speed {
    font-family: monospace;
    color: var(--secondary-color);
}
.metrics-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin-top: 10px;
}

.metric-item {
    background: rgba(0,111,255,0.1);
    padding: 10px;
    border-radius: 8px;
    text-align: center;
}
.online {
    color: #10B981;
}

.offline {
    color: #EF4444;
}

.interface-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
}

.metric-value {
    font-family: monospace;
    font-size: 1.2em;
    color: var(--primary-color);
}