/* ── Theory intro blocks ── */
.theory-section {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 40px;
}

.theory-block {
    background: var(--panel);
    border: 2px solid var(--ink);
    box-shadow: var(--shadow);
    border-radius: var(--r);
    padding: 24px 28px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.theory-block-title {
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--accent);
    margin-bottom: 4px;
}

.theory-block h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text);
    margin: 0;
}

.theory-block p {
    font-size: 0.9rem;
    color: var(--text-dim);
    line-height: 1.65;
    margin: 0;
}

.theory-block strong { color: var(--text); }

.theory-example {
    background: var(--panel2);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px 16px;
    font-size: 0.83rem;
    color: var(--text-dim);
    line-height: 1.6;
}

.theory-example strong { color: var(--accent3); }

.theory-cols {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-top: 4px;
}

@media (max-width: 700px) { .theory-cols { grid-template-columns: 1fr; } }

@media (max-width: 600px) {
    .theory-block { padding: 16px; }
    .theory-cols { grid-template-columns: 1fr; }
}

.theory-col {
    background: var(--panel2);
    border-radius: 8px;
    padding: 12px 14px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.theory-col-label {
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

.theory-col-label.tonic    { color: #1f7a6d; }
.theory-col-label.subdom   { color: #c0871f; }
.theory-col-label.dominant { color: #c5421f; }

.theory-col p {
    font-size: 0.78rem !important;
    color: var(--text-dim);
    line-height: 1.5 !important;
}

/* ── Mode cards ── */
.modes-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    margin-bottom: 40px;
}

@media (max-width: 900px) { .modes-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .modes-grid { grid-template-columns: 1fr; } }

.mode-card {
    background: var(--panel);
    border: 2px solid var(--ink);
    border-left: 8px solid var(--mode-color);
    box-shadow: var(--shadow);
    border-radius: var(--r);
    padding: 18px 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.mode-name {
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text);
}

.mode-tags {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.mode-tag {
    font-size: 0.62rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--mode-color);
    background: color-mix(in srgb, var(--mode-color) 12%, transparent);
    padding: 2px 7px;
    border-radius: 4px;
    white-space: nowrap;
}

.mode-desc {
    font-size: 0.84rem;
    color: var(--text);
    line-height: 1.55;
    margin: 0;
}

.mode-detail {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.mode-detail-label {
    font-size: 0.6rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--mode-color);
}

.mode-detail-text {
    font-size: 0.78rem;
    color: var(--text-dim);
    line-height: 1.5;
}

.mode-artists {
    font-size: 0.7rem;
    color: var(--text-dim);
    font-style: italic;
    border-top: 1px solid var(--border);
    padding-top: 8px;
    margin-top: 2px;
}

.theory-divider {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: var(--text-dim);
    margin: 8px 0 16px;
}

.theory-crosslink {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--accent);
    text-decoration: none;
    margin-top: 14px;
    opacity: 0.85;
    transition: opacity 0.15s;
}
.theory-crosslink:hover { opacity: 0.55; }