/*
 * Tonleiter-Darstellung (createTonleiterView aus js/tonleiter-view.js):
 * Halbtonachse, Schrittfolge und Stufentabelle für Dur/Moll. Eigenständige,
 * wiederverwendbare Komponente - Farben kommen aus lokalen CSS-Variablen auf
 * .tonleiter-view; die Defaults bilden das helle Theme (CAGED-/Intervall-
 * Design). Eine dunkle Seite kann die Variablen einfach überschreiben
 * (siehe css/scale-panel.css für dasselbe Muster).
 */

/* ── Übergang: Griffbrett-Bereich → Tonleiter-Erklärung ────── */
.section-divider {
    position: relative;
    max-width: 900px;
    margin: 56px auto 0;
    padding: 0 4px;
    text-align: center;
}

.section-divider::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(to right, transparent, #d8d0c0 15%, #d8d0c0 85%, transparent);
}

.section-divider span {
    position: relative;
    display: inline-block;
    padding: 4px 16px;
    background: var(--bg);
    font-family: "Courier New", monospace;
    font-size: 11px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: #9a9184;
}

.tonleiter-view {
    --tlv-bg: #fffdf8;
    --tlv-border: #e4ddd0;
    --tlv-eyebrow: #9a9184;
    --tlv-title: #211e19;
    --tlv-text: #5c564b;
    --tlv-accent: var(--color-interval, #1976d2);
    --tlv-accent-text: #ffffff;
    --tlv-whole: var(--color-third, #f9a825);
    --tlv-half: #8a8175;
    --tlv-thead-bg: #f3eee3;
    --tlv-row-divider: #efe9dd;
    --tlv-tonic-bg: #f6f1e4;

    max-width: 900px;
    margin: 40px auto 0;
    padding: 0 4px;
    color: var(--tlv-text);
}

.tonleiter-view__header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 6px;
}

.tonleiter-view__controls {
    display: flex;
    align-items: flex-end;
    gap: 20px;
    flex-wrap: wrap;
}

.tonleiter-view__key-select {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.tonleiter-view__key-select-label {
    font-family: "Courier New", monospace;
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--tlv-eyebrow);
}

.tonleiter-view__key-select select {
    padding: 7px 10px;
    font-size: 15px;
    border: 1px solid var(--tlv-border);
    border-radius: 6px;
    background: var(--tlv-bg);
    color: var(--tlv-title);
}

.tonleiter-view__eyebrow {
    font-family: "Courier New", monospace;
    font-size: 11px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--tlv-eyebrow);
    margin-bottom: 6px;
}

.tonleiter-view__title {
    margin: 0;
    text-align: left;
    font-size: 30px;
    color: var(--tlv-title);
}

.tonleiter-view__mode-label {
    font-style: italic;
    font-size: 15px;
    color: var(--tlv-text);
    margin: 8px 0 22px;
    max-width: 620px;
}

.tonleiter-view__card {
    background: var(--tlv-bg);
    border: 1px solid var(--tlv-border);
    border-radius: 14px;
    padding: 22px 0 18px;
    margin-bottom: 20px;
}

.tonleiter-view__intro-card {
    padding: 20px 28px;
}

.tonleiter-view__intro-title {
    margin: 0 0 8px;
    font-size: 17px;
    color: var(--tlv-title);
}

.tonleiter-view__intro {
    font-size: 15px;
    line-height: 1.5;
    color: var(--tlv-text);
    margin: 0;
}

.tonleiter-view__card-label {
    font-family: "Courier New", monospace;
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--tlv-eyebrow);
    padding: 0 28px;
    margin-bottom: 20px;
}

/* ── Halbtonachse ───────────────────────────── */
.tonleiter-view__ladder-scroll {
    display: flex;
    justify-content: center;
    overflow-x: auto;
}

.tonleiter-view__ladder {
    position: relative;
    height: 172px;
    padding: 0 20px;
}

.tonleiter-view__axis {
    position: absolute;
    top: 74px;
    left: 20px;
    right: 20px;
    height: 2px;
    background: var(--tlv-border);
}

.tonleiter-view__step-bar {
    position: absolute;
    top: 71px;
    height: 6px;
    border-radius: 3px;
    z-index: 1;
}

.tonleiter-view__step-pill {
    position: absolute;
    top: 26px;
    transform: translateX(-50%);
    font-family: "Courier New", monospace;
    font-size: 12px;
    font-weight: 700;
    border-radius: 20px;
    padding: 2px 10px;
    background: var(--tlv-bg);
    border: 1px solid transparent;
    z-index: 2;
}

.tonleiter-view__step-bar.is-whole,
.tonleiter-view__step-pill.is-whole {
    background: var(--tlv-whole);
}

.tonleiter-view__step-pill.is-whole {
    color: var(--tlv-whole);
    border-color: var(--tlv-whole);
    background: var(--tlv-bg);
}

.tonleiter-view__step-bar.is-half,
.tonleiter-view__step-pill.is-half {
    background: var(--tlv-half);
}

.tonleiter-view__step-pill.is-half {
    color: var(--tlv-half);
    border-color: var(--tlv-half);
    background: var(--tlv-bg);
}

.tonleiter-view__tick {
    position: absolute;
    top: 84px;
    width: 1px;
    height: 8px;
    background: var(--tlv-border);
}

.tonleiter-view__tick-label {
    position: absolute;
    top: 98px;
    transform: translateX(-50%);
    font-family: "Courier New", monospace;
    font-size: 11px;
    color: var(--tlv-eyebrow);
}

.tonleiter-view__note-label {
    position: absolute;
    top: 120px;
    transform: translateX(-50%);
    min-width: 26px;
    text-align: center;
    padding: 3px 7px;
    border-radius: 6px;
    background: var(--tlv-thead-bg);
    color: var(--tlv-title);
    font-size: 14px;
    font-weight: 700;
}

.tonleiter-view__note-label.is-tonic {
    background: var(--tlv-accent);
    color: var(--tlv-accent-text);
}

.tonleiter-view__node {
    position: absolute;
    top: 57px;
    transform: translateX(-50%);
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: var(--tlv-accent);
    color: var(--tlv-accent-text);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    box-shadow: 0 2px 6px rgba(0, 0, 0, .18);
    z-index: 3;
}

/* ── Legende zu den Schrittzahlen ───────────── */
.tonleiter-view__step-legend {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 16px 28px 0;
    font-size: 13px;
    color: var(--tlv-text);
}

.tonleiter-view__step-legend div {
    display: flex;
    align-items: center;
    gap: 8px;
}

.tonleiter-view__step-legend-pill {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 24px;
    height: 22px;
    padding: 0 8px;
    border-radius: 20px;
    font-family: "Courier New", monospace;
    font-size: 12px;
    font-weight: 700;
    background: var(--tlv-bg);
    border: 1px solid transparent;
}

.tonleiter-view__step-legend-pill.is-whole {
    color: var(--tlv-whole);
    border-color: var(--tlv-whole);
}

.tonleiter-view__step-legend-pill.is-half {
    color: var(--tlv-half);
    border-color: var(--tlv-half);
}

/* ── Schrittfolge-Chips ─────────────────────── */
.tonleiter-view__steps {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    margin: 0 2px 20px;
}

.tonleiter-view__steps-label {
    font-family: "Courier New", monospace;
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--tlv-eyebrow);
    margin-right: 4px;
}

.tonleiter-view__chip {
    font-family: "Courier New", monospace;
    font-size: 13px;
    font-weight: 700;
    padding: 6px 14px;
    border-radius: 8px;
    color: #fffdf8;
}

.tonleiter-view__chip.is-whole { background: var(--tlv-whole); }
.tonleiter-view__chip.is-half { background: var(--tlv-half); }

/* ── Stufentabelle ──────────────────────────── */
.tonleiter-view__table-card {
    padding: 0;
    overflow: hidden;
}

.tonleiter-view__table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.tonleiter-view__table th {
    text-align: left;
    background: var(--tlv-thead-bg);
    padding: 12px 16px;
    font-family: "Courier New", monospace;
    font-size: 11px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--tlv-eyebrow);
    font-weight: 600;
}

.tonleiter-view__table th:nth-child(3) { text-align: center; }
.tonleiter-view__table th:last-child { text-align: right; }

.tonleiter-view__table tr.is-tonic {
    background: var(--tlv-tonic-bg);
}

.tonleiter-view__table td {
    padding: 13px 16px;
    border-top: 1px solid var(--tlv-row-divider);
}

.tonleiter-view__roman {
    font-family: "Courier New", monospace;
    color: var(--tlv-eyebrow);
}

.tonleiter-view__degree-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--tlv-title);
}

.tonleiter-view__degree-quality {
    font-size: 12px;
    color: var(--tlv-eyebrow);
    margin-top: 2px;
}

.tonleiter-view__step-cell {
    text-align: center;
}

.tonleiter-view__badge {
    display: inline-block;
    font-family: "Courier New", monospace;
    font-size: 12px;
    font-weight: 700;
    padding: 4px 11px;
    border-radius: 20px;
    color: #fffdf8;
}

.tonleiter-view__badge.is-whole { background: var(--tlv-whole); }
.tonleiter-view__badge.is-half { background: var(--tlv-half); }
.tonleiter-view__badge.is-empty {
    color: #c2b9aa;
    background: transparent;
    padding: 0;
}

.tonleiter-view__cumulative {
    text-align: right;
    font-family: "Courier New", monospace;
    color: var(--tlv-text);
}

/* ── Legende ────────────────────────────────── */
.tonleiter-view__legend {
    display: flex;
    gap: 22px;
    flex-wrap: wrap;
    margin-top: 16px;
    font-size: 13px;
    color: var(--tlv-text);
}

.tonleiter-view__legend div {
    display: flex;
    align-items: center;
    gap: 8px;
}

.tonleiter-view__swatch {
    width: 14px;
    height: 14px;
    border-radius: 4px;
    display: inline-block;
}

.tonleiter-view__swatch.is-whole { background: var(--tlv-whole); }
.tonleiter-view__swatch.is-half { background: var(--tlv-half); }

.tonleiter-view__legend-note {
    color: var(--tlv-eyebrow);
}