/* ==========================================================================
   Data Composition Charts Section
   ========================================================================== */

.composition {
    padding: var(--space-4xl) 0;
    background: var(--bg-body);
}

.composition__header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.composition__section-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-secondary);
    margin-bottom: var(--space-md);
}

.composition__heading {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
    line-height: 1.2;
}

.composition__subtitle {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto var(--space-xl);
}

/* Species Toggle */
.composition__toggle {
    display: inline-flex;
    background: var(--bg-muted);
    border-radius: var(--radius-full);
    padding: 4px;
    gap: 4px;
}

.composition__toggle-btn {
    padding: var(--space-sm) var(--space-xl);
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-base);
    background: transparent;
    color: var(--text-muted);
}

.composition__toggle-btn--active {
    background: var(--color-secondary);
    color: var(--text-inverse);
    box-shadow: var(--shadow-sm);
}

/* Chart Grid */
.composition__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-areas:
        "gross     condition"
        "sex       age"
        "skin      skin"
        "fine      fine"
        "batch     batch";
    gap: var(--space-lg);
}

.composition__chart-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    min-height: 380px;
    display: flex;
    flex-direction: column;
}

.composition__chart-card--gross     { grid-area: gross; }
.composition__chart-card--condition { grid-area: condition; }
.composition__chart-card--sex       { grid-area: sex; }
.composition__chart-card--age       { grid-area: age; }
.composition__chart-card--skin      { grid-area: skin; }
.composition__chart-card--fine      { grid-area: fine; min-height: 600px; }
.composition__chart-card--batch     { grid-area: batch; min-height: 500px; }

.composition__chart-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.composition__chart-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: var(--space-md);
}

.composition__chart-container {
    flex: 1;
    min-height: 0;
}

/* Responsive */
@media (max-width: 1024px) {
    .composition__grid {
        grid-template-columns: 1fr;
        grid-template-areas:
            "gross"
            "condition"
            "sex"
            "age"
            "skin"
            "fine"
            "batch";
    }

    .composition__chart-card {
        min-height: 350px;
    }

    .composition__chart-card--fine {
        min-height: 550px;
    }

    .composition__chart-card--batch {
        min-height: 450px;
    }
}

@media (max-width: 768px) {
    .composition__heading {
        font-size: 1.75rem;
    }

    .composition__chart-card {
        padding: var(--space-lg);
        min-height: 320px;
    }

    .composition__chart-card--fine {
        min-height: 500px;
    }

    .composition__chart-card--batch {
        min-height: 420px;
    }
}