/* ============================================================================
 * EPO Pompe — Graphiques des cours metaux precieux
 * Composant [epo_chart] — Adapte au design system pompe-*
 * ============================================================================ */

/* Section wrapper */
.epo-chart-section {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
    padding: 24px 20px;
    border: 1px solid rgba(191, 149, 63, 0.15);
}

/* Header : titre + prix + controles */
.epo-chart__header {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 20px;
}

.epo-chart__info {
    display: flex;
    align-items: baseline;
    gap: 20px;
    flex-wrap: wrap;
}

.epo-chart__title {
    font-family: var(--pompe-font-display, 'Montserrat', sans-serif);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--pompe-text-dark, #1a1a2e);
    margin: 0;
    line-height: 1.2;
}

.epo-chart__price {
    display: flex;
    align-items: baseline;
    gap: 4px;
}

.epo-chart__value {
    font-family: var(--pompe-font-display, 'Montserrat', sans-serif);
    font-size: 1.75rem;
    font-weight: 700;
    color: #BF953F;
}

.epo-chart__unit {
    font-family: var(--pompe-font-display, 'Montserrat', sans-serif);
    font-size: 0.875rem;
    color: #666;
    font-weight: 500;
}

/* Boutons de periode */
.epo-chart__controls {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.epo-chart__btn {
    font-family: var(--pompe-font-display, 'Montserrat', sans-serif);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    padding: 8px 16px;
    border: 1px solid rgba(191, 149, 63, 0.25);
    border-radius: 9999px;
    background: #fff;
    color: #666;
    cursor: pointer;
    transition: background-color 0.2s, color 0.2s, border-color 0.2s;
    min-height: 44px;
    line-height: 1;
    display: inline-flex;
    align-items: center;
}

.epo-chart__btn:hover {
    background: #faf3e0;
    border-color: #d4af37;
    color: #8B7635;
}

.epo-chart__btn--active {
    background: #BF953F;
    border-color: #BF953F;
    color: #fff;
}

.epo-chart__btn--active:hover {
    background: #AA771C;
    border-color: #AA771C;
    color: #fff;
}

/* Zone du canvas */
.epo-chart__canvas-wrap {
    position: relative;
    width: 100%;
}

/* Footer : date + source */
.epo-chart__footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
    font-family: var(--pompe-font-display, 'Montserrat', sans-serif);
    font-size: 0.75rem;
    color: #999;
}

/* Message vide / erreur */
.epo-chart__empty {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    min-height: 200px;
    font-family: var(--pompe-font-display, 'Montserrat', sans-serif);
    font-size: 1rem;
    color: #999;
    margin: 0;
}

/* ============================================================================
 * VARIANTE ARGENT
 * ============================================================================ */

.epo-chart-section--argent .epo-chart__value {
    color: #5A5A5A;
}

.epo-chart-section--argent .epo-chart__btn:hover {
    background: #f0f0f0;
    border-color: #C0C0C0;
    color: #5A5A5A;
}

.epo-chart-section--argent .epo-chart__btn--active {
    background: #5A5A5A;
    border-color: #5A5A5A;
    color: #fff;
}

.epo-chart-section--argent .epo-chart__btn--active:hover {
    background: #1A1A1A;
    border-color: #1A1A1A;
    color: #fff;
}

/* ============================================================================
 * RESPONSIVE — Tablet+
 * ============================================================================ */

@media (min-width: 640px) {
    .epo-chart-section {
        padding: 32px;
    }

    .epo-chart__header {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }

    .epo-chart__title {
        font-size: 1.35rem;
    }

    .epo-chart__btn {
        font-size: 0.875rem;
        padding: 8px 18px;
    }
}

@media (min-width: 1024px) {
    .epo-chart-section {
        padding: 36px 40px;
    }

    .epo-chart__title {
        font-size: 1.45rem;
    }

    .epo-chart__value {
        font-size: 2rem;
    }
}