/* ============================================
   THEORY REFERENCE PAGE
   ============================================ */

.theory-page {
    padding: var(--space-6);
    max-width: var(--content-max-width);
    margin: 0 auto;
}

.theory-header {
    margin-bottom: var(--space-6);
}

.theory-tabs {
    display: flex;
    gap: var(--space-2);
    margin-bottom: var(--space-6);
    border-bottom: 1px solid var(--border-glass);
    padding-bottom: var(--space-2);
    flex-wrap: wrap;
}

/* --- Forms Grid --- */
.forms-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--space-4);
}

.form-card {
    padding: var(--space-5);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.form-card__header {
    display: flex;
    gap: var(--space-3);
    align-items: flex-start;
}

.form-icon {
    font-size: 2rem;
}

.form-name {
    font-size: var(--text-xl);
    margin-bottom: var(--space-1);
}

.form-structure,
.form-usul {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.form-desc {
    line-height: var(--leading-relaxed);
    margin: 0;
}

/* --- Fasıl Timeline --- */
.fasil-section {
    max-width: 600px;
}

.fasil-intro {
    padding: var(--space-4);
    margin-bottom: var(--space-6);
}

.fasil-timeline {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.fasil-step {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4);
    position: relative;
    transition: border-color var(--transition-fast);
}

.fasil-step:hover {
    border-color: var(--border-glass-accent);
}

.fasil-number {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-full);
    background: rgba(212, 165, 116, 0.15);
    border: 1px solid var(--border-glass-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--accent-primary);
    flex-shrink: 0;
}

.fasil-icon {
    font-size: 1.5rem;
}

.fasil-info {
    display: flex;
    flex-direction: column;
}

.fasil-name {
    font-size: var(--text-base);
    font-weight: 500;
}

.fasil-connector {
    position: absolute;
    left: 33px;
    bottom: -4px;
    width: 2px;
    height: 8px;
    background: var(--border-glass-accent);
}

/* --- Usul Grid --- */
.usul-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-4);
}

.usul-card {
    padding: var(--space-5);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.usul-card__header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.usul-meta {
    display: flex;
    gap: var(--space-2);
}

.usul-beats,
.usul-pattern {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.beats-number {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--accent-primary);
}

.pattern-display {
    padding: var(--space-2) var(--space-3);
    background: var(--bg-glass);
    border-radius: var(--radius-sm);
    letter-spacing: 0.05em;
    overflow-x: auto;
}

/* --- Perde Table --- */
.perde-table-section {
    overflow: hidden;
}

.perde-table-info {
    padding: var(--space-4);
    margin-bottom: var(--space-4);
}

.perde-table-wrap {
    overflow-x: auto;
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
}

.perde-ref-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--text-sm);
}

.perde-ref-table th,
.perde-ref-table td {
    padding: var(--space-2) var(--space-3);
    text-align: left;
    border-bottom: 1px solid var(--border-glass);
    white-space: nowrap;
}

.perde-ref-table th {
    background: var(--bg-glass);
    font-size: var(--text-xs);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-muted);
    position: sticky;
    top: 0;
}

.perde-ref-table tr:hover {
    background: var(--bg-glass);
}

.perde-makams {
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* --- Responsive --- */
@media (max-width: 768px) {
    .theory-page {
        padding: var(--space-4);
    }

    .forms-grid {
        grid-template-columns: 1fr;
    }

    .usul-grid {
        grid-template-columns: 1fr;
    }

    .theory-tabs {
        overflow-x: auto;
    }
}