.ai-tenant-usage-card {
    background: linear-gradient(135deg, #f8fafc 0%, #eef2ff 100%);
}

.ai-tenant-usage-header {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}

.ai-tenant-usage-heading {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.ai-tenant-usage-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: #0f172a;
}

.ai-tenant-usage-subtitle {
    font-size: 0.88rem;
    color: #475569;
    max-width: 54rem;
}

.ai-tenant-usage-toggle {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
}

.ai-tenant-usage-toggle-button {
    border: 1px solid #cbd5e1;
    background: #ffffff;
    color: #334155;
    border-radius: 999px;
    padding: 0.55rem 0.95rem;
    font-size: 0.82rem;
    font-weight: 700;
    transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.ai-tenant-usage-toggle-button:hover {
    background: #dbeafe;
    border-color: #1d4ed8;
    color: #1e3a8a;
}

.ai-tenant-usage-toggle-button.is-active {
    background: #1d4ed8;
    border-color: #1d4ed8;
    color: #ffffff;
}

.ai-tenant-usage-summary {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.ai-tenant-usage-summary-tile {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    padding: 0.85rem 1rem;
    background: rgba(255, 255, 255, 0.88);
    border: 1px solid #dbe3f0;
    border-radius: 14px;
}

.ai-tenant-usage-summary-label {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: #64748b;
}

.ai-tenant-usage-summary-value {
    font-size: 1rem;
    font-weight: 700;
    color: #0f172a;
}

.ai-tenant-usage-visuals {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.ai-tenant-usage-chart-shell {
    display: flex;
    flex-direction: column;
    gap: 0.55rem;
}

.ai-tenant-usage-chart-header {
    display: flex;
    justify-content: space-between;
    gap: 0.75rem;
    flex-wrap: wrap;
    font-size: 0.82rem;
    color: #475569;
}

.ai-tenant-usage-chart {
    position: relative;
    width: 100%;
    min-height: 240px;
    padding: 0.45rem 0.35rem 0.85rem;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.94);
    border: 1px solid #dbe3f0;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.75);
    overflow: hidden;
}

.ai-tenant-usage-chart-svg {
    width: 100%;
    height: 240px;
    display: block;
}

.ai-tenant-usage-axis {
    stroke: #cbd5e1;
    stroke-width: 1;
}

.ai-tenant-usage-grid-line {
    stroke: rgba(148, 163, 184, 0.28);
    stroke-width: 1;
    stroke-dasharray: 4 6;
}

.ai-tenant-usage-line {
    fill: none;
    stroke-width: 2.8;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.ai-tenant-usage-overlay {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.ai-tenant-usage-axis-label {
    position: absolute;
    transform: translate(-50%, -50%);
    font-size: 0.72rem;
    color: #64748b;
    background: rgba(255, 255, 255, 0.82);
    padding: 0 0.2rem;
    border-radius: 6px;
    white-space: nowrap;
}

.ai-tenant-usage-y-axis .ai-tenant-usage-axis-label {
    transform: translateY(-50%);
}

.ai-tenant-usage-x-axis .ai-tenant-usage-axis-label {
    transform: translateX(-50%);
}

.ai-tenant-usage-legend {
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}

.ai-tenant-usage-legend-item {
    display: flex;
    align-items: flex-start;
    gap: 0.65rem;
    padding: 0.7rem 0.85rem;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.76);
    border: 1px solid #dbe3f0;
}

.ai-tenant-usage-legend-swatch {
    width: 0.9rem;
    height: 0.9rem;
    border-radius: 999px;
    margin-top: 0.2rem;
    flex: 0 0 auto;
}

.ai-tenant-usage-legend-copy {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.ai-tenant-usage-legend-title {
    font-size: 0.9rem;
    font-weight: 700;
    color: #0f172a;
}

.ai-tenant-usage-legend-meta {
    font-size: 0.78rem;
    color: #475569;
}

@media (min-width: 768px) {
    .ai-tenant-usage-header {
        flex-direction: row;
        align-items: flex-start;
        justify-content: space-between;
    }

    .ai-tenant-usage-summary {
        flex-direction: row;
        flex-wrap: wrap;
    }

    .ai-tenant-usage-summary-tile {
        flex: 1 1 12rem;
    }

    .ai-tenant-usage-visuals {
        flex-direction: row;
        align-items: stretch;
    }

    .ai-tenant-usage-chart-shell {
        flex: 1 1 0;
        min-width: 0;
    }

    .ai-tenant-usage-legend {
        flex: 0 0 18rem;
        max-height: 20rem;
        overflow: auto;
    }
}