.plan-usage-panel {
    margin-bottom: 24px;
    padding: 24px 24px 22px;
    border: 1px solid rgba(255, 255, 255, 0.7);
    border-radius: 28px;
    background: rgba(255, 251, 245, 0.84);
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(8px);
}

.plan-usage-panel[hidden] {
    display: none !important;
}

.plan-usage-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 18px;
    flex-wrap: wrap;
}

.plan-usage-copy {
    flex: 1 1 520px;
    min-width: 0;
}

.plan-usage-kicker {
    display: inline-flex;
    align-items: center;
    min-height: 28px;
    padding: 4px 12px;
    border-radius: 999px;
    background: rgba(24, 52, 79, 0.08);
    color: #18344f;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.plan-usage-title {
    margin: 12px 0 8px;
    font-size: clamp(24px, 3vw, 32px);
    line-height: 1.15;
    letter-spacing: -0.03em;
}

.plan-usage-description {
    margin: 0;
    color: #425065;
    font-size: 14px;
    line-height: 1.75;
    max-width: 860px;
}

.plan-usage-meta {
    margin-top: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.plan-usage-chip {
    display: inline-flex;
    align-items: center;
    min-height: 34px;
    padding: 0 13px;
    border-radius: 999px;
    border: 1px solid rgba(23, 32, 51, 0.08);
    background: rgba(255, 255, 255, 0.72);
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 700;
    box-shadow: 0 10px 20px rgba(23, 32, 51, 0.05);
}

.plan-usage-chip strong {
    color: var(--text-primary);
    font-weight: 800;
    margin-right: 6px;
}

.plan-usage-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: stretch;
    min-width: 220px;
}

.plan-usage-actions-label {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-tertiary);
}

.plan-usage-panel .segmented-control {
    display: inline-flex;
    border: 1px solid rgba(23, 32, 51, 0.12);
    border-radius: 999px;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.72);
    box-shadow: 0 10px 20px rgba(23, 32, 51, 0.05);
}

.plan-usage-panel .segment-btn {
    min-width: 82px;
    min-height: 42px;
    padding: 0 16px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 700;
    font-family: inherit;
    cursor: pointer;
    transition: background 0.18s ease, color 0.18s ease;
}

.plan-usage-panel .segment-btn + .segment-btn {
    border-left: 1px solid rgba(23, 32, 51, 0.1);
}

.plan-usage-panel .segment-btn:hover:not(:disabled) {
    color: var(--text-primary);
    background: rgba(15, 118, 110, 0.08);
}

.plan-usage-panel .segment-btn.active {
    background: linear-gradient(135deg, #173753, #0f766e);
    color: #f7fffd;
}

.plan-usage-panel .segment-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.plan-usage-state {
    margin-top: 18px;
    min-height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 18px;
    border: 1px dashed rgba(23, 32, 51, 0.14);
    background: rgba(255, 255, 255, 0.52);
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
    text-align: center;
    padding: 14px 18px;
}

.plan-usage-state.is-error {
    color: #9f1239;
    border-color: rgba(239, 68, 68, 0.2);
    background: rgba(255, 236, 236, 0.72);
}

.plan-usage-chart {
    margin-top: 18px;
    width: 100%;
    height: 440px;
    border-radius: 22px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.5), rgba(248, 242, 231, 0.7));
    border: 1px solid rgba(23, 32, 51, 0.08);
}

.plan-usage-chart[hidden] {
    display: none;
}

.plan-usage-chart-stack {
    display: grid;
    gap: 20px;
}

.plan-usage-chart-block {
    padding: 18px 18px 16px;
    border-radius: 22px;
    border: 1px solid rgba(23, 32, 51, 0.08);
    background: rgba(255, 255, 255, 0.28);
}

.plan-usage-chart-header {
    display: grid;
    gap: 8px;
    min-width: 0;
}

.plan-usage-chart-title {
    margin: 0;
    font-size: 18px;
    line-height: 1.3;
    color: var(--text-primary);
    min-width: 0;
}

.plan-usage-chart-subtitle {
    margin: 0;
    max-width: 100%;
    color: var(--text-tertiary);
    font-size: 12px;
    line-height: 1.7;
    white-space: normal;
    overflow-wrap: anywhere;
}

.plan-usage-footer {
    margin-top: 14px;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}

.plan-usage-footnote,
.plan-usage-coverage {
    color: var(--text-tertiary);
    font-size: 12px;
    line-height: 1.7;
}

.plan-usage-footnote strong,
.plan-usage-coverage strong {
    color: var(--text-primary);
}

@media (max-width: 900px) {
    .plan-usage-panel {
        padding: 20px 18px 18px;
        border-radius: 24px;
    }

    .plan-usage-header {
        gap: 14px;
    }

    .plan-usage-actions {
        min-width: 0;
        width: 100%;
    }

    .plan-usage-panel .segmented-control {
        width: 100%;
    }

    .plan-usage-panel .segment-btn {
        flex: 1 1 0;
        min-width: 0;
    }

    .plan-usage-chart {
        height: 380px;
    }
}

@media (max-width: 640px) {
    .plan-usage-title {
        font-size: 24px;
    }

    .plan-usage-meta {
        gap: 8px;
    }

    .plan-usage-chip {
        min-height: 32px;
        padding: 0 11px;
    }

    .plan-usage-chart {
        height: 340px;
    }
}