:root {
    --bg-color: #121212;
    --card-bg: #1e1e1e;
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --accent-color: #bb86fc;
    --success-color: #03dac6;
    --danger-color: #cf6679;
    --warning-color: #ffb74d;
    --border-color: #333333;
}

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

.navbar {
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-refresh {
    background-color: var(--accent-color);
    color: #000;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 600;
    transition: opacity 0.2s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-refresh:hover {
    opacity: 0.9;
}

.btn-refresh:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.container {
    padding: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.summary-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
}

.card-title {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.card-value {
    font-size: 1.5rem;
    font-weight: 700;
}

.table-container {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    background-color: rgba(255, 255, 255, 0.05);
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.875rem;
    cursor: pointer;
}

th:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

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

tr:hover {
    background-color: rgba(255, 255, 255, 0.02);
}

.text-success { color: var(--success-color); }
.text-danger { color: var(--danger-color); }
.text-warning { color: var(--warning-color); }

.trend-sparkline {
    width: 100px;
    height: 30px;
}

.range-bar-container {
    width: 100px;
    height: 6px;
    background-color: #333;
    border-radius: 3px;
    position: relative;
    margin-top: 5px;
}

.range-bar-fill {
    height: 100%;
    background-color: var(--accent-color);
    border-radius: 3px;
    position: absolute;
}

.range-marker {
    width: 2px;
    height: 10px;
    background-color: #fff;
    position: absolute;
    top: -2px;
    transform: translateX(-50%);
}

.alert-badge {
    background-color: rgba(207, 102, 121, 0.2);
    color: var(--danger-color);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    visibility: hidden;
    opacity: 0;
    transition: opacity 0.3s;
}

.loading-overlay.active {
    visibility: visible;
    opacity: 1;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-left-color: var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.last-updated {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-left: auto;
    margin-right: 1rem;
}