* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", sans-serif;
    background: #0f172a;
    min-height: 100vh;
    padding: 20px;
    color: #f1f5f9;
}

.container {
    max-width: 1600px;
    margin: 0 auto;
}

header {
    background: #1e293b;
    padding: 24px 32px;
    border-radius: 12px;
    border: 1px solid #334155;
    margin-bottom: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

h1 {
    font-size: 1.875rem;
    font-weight: 600;
    color: #f1f5f9;
}

.update-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

#last-update {
    color: #94a3b8;
    font-size: 0.875rem;
}

.dashboard {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 600px), 1fr));
    gap: 16px;
}

.card {
    background: #1e293b;
    padding: 24px;
    border-radius: 12px;
    border: 1px solid #334155;
}

.card.full-width {
    grid-column: 1 / -1;
}

h2 {
    color: #f1f5f9;
    margin-bottom: 20px;
    font-size: 1.125rem;
    font-weight: 600;
    border-bottom: 1px solid #334155;
    padding-bottom: 12px;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.card-header h2 {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
    flex: 1;
    min-width: 200px;
}

.stats-controls {
    display: flex;
    align-items: center;
    gap: 12px;
}

.stats-duration {
    color: #94a3b8;
    font-size: 0.875rem;
}

.reset-btn {
    background: #f1f5f9;
    color: #0f172a;
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.15s;
}

.reset-btn:hover:not(:disabled) {
    background: #cbd5e1;
}

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

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr));
    gap: 12px;
}

.stat-item {
    background: #0f172a;
    padding: 16px;
    border-radius: 8px;
    border: 1px solid #334155;
    display: flex;
    flex-direction: column;
    gap: 8px;
    transition: border-color 0.15s;
}

.stat-item:hover {
    border-color: #475569;
}

.stat-item.highlight {
    background: #1e293b;
    border-color: #3b82f6;
}

.stat-item.success {
    background: #1e293b;
    border-color: #22c55e;
}

.stat-item.info {
    background: #1e293b;
    border-color: #06b6d4;
}

.stat-item.warning {
    background: #1e293b;
    border-color: #f59e0b;
}

.stat-label {
    font-size: 0.875rem;
    color: #94a3b8;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 600;
    color: #f1f5f9;
}

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

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 8px;
}

thead {
    background: #0f172a;
    border-bottom: 1px solid #334155;
}

th {
    padding: 12px 16px;
    text-align: left;
    font-weight: 500;
    font-size: 0.875rem;
    color: #94a3b8;
}

tbody tr {
    border-bottom: 1px solid #334155;
    transition: background 0.15s;
}

tbody tr:hover {
    background: #0f172a;
}

td {
    padding: 12px 16px;
    font-size: 0.875rem;
}

.no-data {
    text-align: center;
    color: #64748b;
    padding: 24px;
}

.error-high {
    color: #ef4444;
    font-weight: 500;
}

.rank-cell {
    font-weight: 600;
    text-align: center;
    width: 60px;
}

#top-clients-table th:nth-child(1),
#top-clients-table td:nth-child(1),
#top-domains-table th:nth-child(1),
#top-domains-table td:nth-child(1) {
    width: 60px;
}

.rank-1 {
    background: rgba(234, 179, 8, 0.1);
}

.rank-1 .rank-cell {
    color: #eab308;
}

.rank-2 {
    background: rgba(148, 163, 184, 0.1);
}

.rank-2 .rank-cell {
    color: #94a3b8;
}

.rank-3 {
    background: rgba(251, 146, 60, 0.1);
}

.rank-3 .rank-cell {
    color: #fb923c;
}

.domain-cell {
    max-width: 300px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

footer {
    text-align: center;
    color: #94a3b8;
    margin-top: 24px;
    padding: 20px;
    font-size: 0.875rem;
}

.footer-content {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.version-info {
    display: flex;
    align-items: center;
    gap: 8px;
    background: #1e293b;
    padding: 6px 12px;
    border-radius: 6px;
    border: 1px solid #334155;
}

#version-display {
    font-weight: 500;
}

.update-btn {
    background: transparent;
    color: #94a3b8;
    border: 1px solid #334155;
    width: 28px;
    height: 28px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s;
}

.update-btn:hover:not(:disabled) {
    background: #334155;
    color: #f1f5f9;
}

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

@media (max-width: 768px) {
    body {
        padding: 12px;
    }

    header {
        flex-direction: column;
        gap: 12px;
        padding: 16px;
    }

    h1 {
        font-size: 1.5rem;
    }

    .card {
        padding: 16px;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    table {
        font-size: 0.8rem;
        min-width: 500px;
    }

    th, td {
        padding: 8px;
    }

    #upstream-table th:nth-child(5),
    #upstream-table td:nth-child(5) {
        display: none;
    }
}