/* ── Usage Page ── */

.usage-page {
    padding: 20px;
    min-height: 100vh;
}

.usage-page-inner {
    max-width: 900px;
    margin: 0 auto;
}

.usage-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.usage-back-link {
    color: #4a9eff;
    text-decoration: none;
    font-size: 14px;
    white-space: nowrap;
}

.usage-title {
    margin: 0;
    color: #fff;
    font-size: 22px;
    font-weight: 600;
}

.usage-card {
    background: #1e1e1e;
    border: 1px solid #2a2a2a;
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 16px;
}

.usage-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 14px;
}

.usage-card-header h2 {
    margin: 0;
    color: #fff;
    font-size: 16px;
    font-weight: 500;
}

.usage-card-header h2 i {
    margin-right: 8px;
    color: #888;
}

.usage-loading {
    text-align: center;
    color: #666;
    padding: 16px;
}

.usage-error {
    text-align: center;
    color: #666;
    padding: 16px;
}

.usage-empty {
    text-align: center;
    color: #555;
    padding: 24px;
    font-size: 14px;
}

/* ── Tier Bar ── */

.usage-tier-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    background: #1e1e1e;
    border: 1px solid #2a2a2a;
    border-radius: 8px;
    padding: 12px 16px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.usage-tier-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.usage-tier-badge {
    font-size: 13px;
    font-weight: 600;
    border: 1px solid;
    border-radius: 4px;
    padding: 2px 8px;
}

.usage-tier-badge i {
    margin-right: 4px;
}

.usage-tier-label {
    color: #aaa;
    font-size: 13px;
}

.usage-tier-expiry {
    color: #888;
    font-size: 12px;
}

.usage-tier-expiry.warning {
    color: #f0c040;
}

.usage-tier-expiry.expired {
    color: #e74c3c;
}

.usage-tier-nudge {
    color: #4a9eff;
    text-decoration: none;
    font-size: 13px;
    white-space: nowrap;
}

.usage-tier-nudge i {
    margin-right: 4px;
}

/* ── Summary Card ── */

.usage-summary {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.usage-meter {}

.usage-meter-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 6px;
}

.usage-meter-label {
    color: #ccc;
    font-size: 14px;
    font-weight: 500;
}

.usage-meter-value {
    color: #888;
    font-size: 13px;
}

.usage-bar-bg {
    background: #222;
    border-radius: 4px;
    height: 8px;
    overflow: hidden;
}

.usage-bar-fill {
    height: 100%;
    border-radius: 4px;
}

.usage-meter-sub {
    color: #555;
    font-size: 12px;
    margin-top: 4px;
}

.usage-section-divider {
    border-top: 1px solid #2a2a2a;
    margin: 0;
}

/* Breakdown */

.usage-breakdown-section {}

.usage-breakdown-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
}

.usage-breakdown-title {
    color: #888;
    font-size: 12px;
    text-transform: uppercase;
}

.usage-bd-tabs {
    display: flex;
    gap: 2px;
    margin-left: auto;
}

.usage-bd-tab {
    background: #222;
    color: #888;
    border: 1px solid #333;
    padding: 2px 8px;
    font-size: 11px;
    border-radius: 3px;
    cursor: pointer;
}

.usage-bd-tab.active {
    background: #333;
    color: #fff;
    border-color: #444;
}

.usage-bd-content {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.usage-bd-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.usage-bd-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
    flex-shrink: 0;
}

.usage-bd-text {
    color: #aaa;
    font-size: 13px;
}

/* Concurrent / Storage */

.usage-concurrent {
    color: #666;
    font-size: 12px;
}

.usage-storage {}

.usage-storage-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.usage-storage-tag {
    color: #aaa;
    font-size: 12px;
    background: #222;
    padding: 2px 8px;
    border-radius: 3px;
}

.usage-storage-tag strong {
    color: #fff;
}

/* ── Spark Charts ── */

.usage-charts-row {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.usage-chart-col {
    min-width: 0;
    border: 1px solid #2a2a2a;
    border-radius: 6px;
    padding: 8px;
}

.usage-chart-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: 3px;
}

.usage-chart-label span:first-child {
    color: #888;
    font-size: 11px;
}

.usage-chart-label span:last-child {
    color: #aaa;
    font-size: 11px;
}

.usage-spark-empty {
    height: 32px;
    background: #1a1a1a;
    border-radius: 3px;
}

/* ── Period Tabs ── */

.usage-period-tabs {
    display: flex;
    gap: 2px;
}

.usage-period-tab {
    background: #222;
    color: #888;
    border: 1px solid #333;
    padding: 4px 12px;
    font-size: 12px;
    border-radius: 4px;
    cursor: pointer;
}

.usage-period-tab.active {
    background: #4a9eff;
    color: #fff;
    border-color: #4a9eff;
}

.usage-period-tab:hover:not(.active) {
    background: #333;
}

/* ── Timesheet Table ── */

.usage-ts-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.usage-ts-table thead th {
    padding: 8px 10px;
    text-align: left;
    color: #888;
    font-size: 11px;
    text-transform: uppercase;
    font-weight: 500;
    border-bottom: 1px solid #333;
    white-space: nowrap;
}

.usage-ts-row {
    border-bottom: 1px solid #222;
}

.usage-ts-row td {
    padding: 8px 10px;
    vertical-align: middle;
}

.usage-ts-time {
    color: #888;
    white-space: nowrap;
    font-size: 12px;
}

.usage-ts-type {
    display: flex;
    align-items: center;
    gap: 6px;
    color: #ccc;
    white-space: nowrap;
}

.usage-ts-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    display: inline-block;
    flex-shrink: 0;
}

.usage-ts-workflow {
    color: #999;
    max-width: 180px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.usage-ts-model {
    color: #999;
    max-width: 160px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.usage-ts-duration {
    color: #fff;
    font-weight: 500;
    white-space: nowrap;
}

.usage-ts-qty {
    color: #888;
    text-align: center;
}

.usage-ts-thumbs {
    display: flex;
    align-items: center;
    gap: 3px;
}

.usage-ts-thumb {
    width: 28px;
    height: 28px;
    border-radius: 3px;
    object-fit: cover;
    background: #222;
}

.usage-ts-thumb-more {
    color: #666;
    font-size: 11px;
    margin-left: 2px;
}

/* Footer */

.usage-ts-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 0 0;
}

.usage-ts-count {
    color: #555;
    font-size: 12px;
}

.usage-load-more-btn {
    background: #2a2a2a;
    color: #aaa;
    border: 1px solid #444;
    padding: 6px 16px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 13px;
}

.usage-load-more-btn:hover:not(:disabled) {
    background: #333;
    color: #fff;
}

.usage-load-more-btn:disabled {
    opacity: 0.5;
    cursor: default;
}

/* ── Mobile ── */

@media (max-width: 768px) {
    .usage-page {
        padding: 12px;
    }

    .usage-charts-row {
        flex-direction: column;
    }

    .usage-chart-col {
        min-width: 0 !important;
    }

    .usage-ts-table {
        font-size: 12px;
    }

    .usage-ts-workflow,
    .usage-ts-model {
        max-width: 100px;
    }

    .usage-ts-table thead th,
    .usage-ts-row td {
        padding: 6px;
    }
}