/* =========================================
   Concert Hall — Virtual Concert Hall
   /concert (lobby) and /concert/[slug] (performance)
   ========================================= */

/* ---- Concert-specific tokens ---- */
.concert-lobby,
.concert-hall {
  --font-display: 'Cormorant Garamond', 'Crimson Pro', Georgia, serif;
  --concert-gold: #C9A84C;
  --concert-cream: #F5F0E8;
  --concert-brown: #1A0F00;
  --concert-brown-mid: #2A1A08;
  --transition-ceremonial: 700ms ease;
}

/* =========================================
   LOBBY PAGE — /concert
   ========================================= */

.concert-hero {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: #1a0f05 url("/assets/images/concert-hall-bg.jpg") center center / contain no-repeat;
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  aspect-ratio: 16 / 9;
  max-height: 80vh;
  min-height: 300px;
}

.concert-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(0,0,0,0.1) 0%, rgba(20,12,5,0.45) 100%);
}

.concert-hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: var(--space-xl) var(--space-md);
}

.concert-hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 600;
  color: var(--concert-gold);
  letter-spacing: 0.04em;
  margin: 0 0 0.5rem;
}

.concert-hero-subtitle {
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  color: var(--concert-cream);
  opacity: 0.85;
  margin: 0;
  font-style: italic;
}

/* ---- Lobby Body ---- */

.concert-lobby-body {
  max-width: 900px;
  margin: 0 auto;
  padding: var(--space-xl) var(--space-md);
}

.concert-lobby-intro {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.concert-lobby-intro p {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  line-height: 1.8;
  color: var(--concert-cream);
  max-width: 640px;
  margin: 0 auto;
}

/* ---- Performance Card Grid ---- */

.concert-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-lg);
}

.concert-card {
  display: block;
  text-decoration: none;
  background: var(--concert-brown-mid);
  border: 1px solid rgba(201, 168, 76, 0.2);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition:
    border-color var(--transition-ceremonial),
    box-shadow var(--transition-ceremonial),
    transform 400ms ease;
}

.concert-card:hover {
  border-color: var(--concert-gold);
  box-shadow: 0 8px 30px rgba(201, 168, 76, 0.15);
  transform: translateY(-2px);
}

.concert-card-type {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--concert-gold);
  opacity: 0.7;
  margin-bottom: var(--space-sm);
}

.concert-card-title {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--concert-cream);
  margin: 0 0 0.5rem;
  line-height: 1.3;
}

.concert-card-subtitle {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--concert-cream);
  opacity: 0.7;
  margin: 0 0 var(--space-md);
  font-style: italic;
  line-height: 1.5;
}

.concert-card-meta {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--concert-gold);
  opacity: 0.6;
}


/* =========================================
   PERFORMANCE PAGE — /concert/[slug]
   ========================================= */

/* ---- Hero ---- */

.concert-hall-hero {
  position: relative;
  min-height: 40vh;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  background: url('/assets/images/concert-hall-bg.jpg') center top / cover no-repeat scroll;
  overflow: hidden;
}

.concert-hall-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(0,0,0,0.1) 0%, rgba(20,12,5,0.45) 100%);
}

.concert-hall-hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: var(--space-xl) var(--space-md) var(--space-lg);
}

.concert-hall-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  color: var(--concert-gold);
  letter-spacing: 0.03em;
  margin: 0 0 0.4rem;
}

.concert-hall-subtitle {
  font-family: var(--font-serif);
  font-size: clamp(1rem, 2vw, 1.3rem);
  color: var(--concert-cream);
  opacity: 0.8;
  margin: 0;
  font-style: italic;
}

/* ---- Welcome Note ---- */

.concert-hall-welcome {
  max-width: 680px;
  margin: 0 auto;
  padding: var(--space-xl) var(--space-md);
  text-align: center;
}

.concert-hall-welcome p {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  line-height: 1.85;
  color: var(--concert-cream);
  opacity: 0.9;
}

/* ---- Player Panel ---- */

.concert-hall-player {
  max-width: 960px;
  margin: 0 auto;
  padding: var(--space-lg) var(--space-md) 0;
  background: var(--concert-brown);
  border-radius: var(--radius-lg);
  transition: opacity var(--transition-ceremonial);
}

.concert-hall-player--dimmed {
  opacity: 0.4;
}

.player-movement-info {
  text-align: center;
  margin-bottom: var(--space-lg);
}

.player-mvt-number {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--concert-gold);
  opacity: 0.6;
  margin-bottom: 0.3rem;
}

.player-mvt-title {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--concert-cream);
  margin: 0 0 0.4rem;
}

.player-grace-label {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--concert-cream);
  opacity: 0.6;
  font-style: italic;
  margin: 0;
}

/* ---- Audio Controls ---- */

.player-controls {
  max-width: 480px;
  margin: 0 auto;
}

.player-progress-wrap {
  position: relative;
  margin-bottom: 0.5rem;
}

.player-progress-bar {
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2px;
  overflow: hidden;
}

.player-progress-fill {
  height: 100%;
  background: var(--concert-gold);
  border-radius: 2px;
  width: 0%;
  transition: width 0.1s linear;
}

.player-seek {
  position: absolute;
  top: -6px;
  left: 0;
  width: 100%;
  height: 16px;
  opacity: 0;
  cursor: pointer;
  -webkit-appearance: none;
  appearance: none;
  margin: 0;
  background: transparent;
}

.player-time {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  color: var(--concert-cream);
  opacity: 0.5;
  margin-bottom: var(--space-md);
}

.player-buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
}

.player-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: var(--concert-cream);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 50%;
  transition: color var(--transition-normal), background var(--transition-normal);
}

.player-btn:hover {
  color: var(--concert-gold);
  background: rgba(201, 168, 76, 0.1);
}

.player-btn-play {
  width: 56px;
  height: 56px;
  border: 2px solid var(--concert-gold);
}

.player-btn-play:hover {
  background: rgba(201, 168, 76, 0.15);
}

/* ---- Script Panel ---- */

.player-script-toggle {
  text-align: center;
  margin-top: var(--space-md);
}

.btn-script-toggle {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--concert-gold);
  background: none;
  border: 1px solid rgba(201, 168, 76, 0.3);
  border-radius: var(--radius-md);
  padding: 0.5rem 1.2rem;
  cursor: pointer;
  transition: border-color var(--transition-normal), background var(--transition-normal);
}

.btn-script-toggle:hover {
  border-color: var(--concert-gold);
  background: rgba(201, 168, 76, 0.08);
}

.player-script-panel {
  margin-top: var(--space-md);
  padding: var(--space-md);
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-md);
  border: 1px solid rgba(201, 168, 76, 0.1);
}

.player-script-panel p {
  font-family: var(--font-serif);
  font-size: 1rem;
  line-height: 1.8;
  color: var(--concert-cream);
  opacity: 0.85;
}

/* ---- Interstitial (between movements) ---- */

.concert-hall-interstitial {
  max-width: 680px;
  margin: var(--space-lg) auto;
  text-align: center;
  padding: var(--space-xl) var(--space-md);
  opacity: 0;
  transition: opacity var(--transition-ceremonial);
}

.interstitial--visible {
  opacity: 1;
}

.concert-hall-interstitial p {
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--concert-cream);
  opacity: 0.7;
  font-style: italic;
  line-height: 1.6;
}

/* ---- Closing Reflection (after final movement) ---- */

.concert-hall-closing {
  max-width: 680px;
  margin: var(--space-xxl) auto;
  text-align: center;
  padding: var(--space-xl) var(--space-md);
  opacity: 0;
  transition: opacity 1.5s ease;
}

.closing--visible {
  opacity: 1;
}

.closing-reflection {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 400;
  color: var(--concert-gold);
  font-style: italic;
  margin: 0 0 var(--space-xl);
  line-height: 1.4;
}

.closing-chapter-link {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--concert-cream);
  text-decoration: none;
  border-bottom: 1px solid rgba(201, 168, 76, 0.3);
  padding-bottom: 2px;
  opacity: 0;
  transition: opacity 1.2s ease, color var(--transition-normal);
}

.closing-link--visible {
  opacity: 0.7;
}

.closing-chapter-link:hover {
  color: var(--concert-gold);
  opacity: 1;
}

/* ---- Mobile Now-Playing Bar ---- */

.mobile-now-playing {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--concert-brown);
  border-top: 1px solid rgba(201, 168, 76, 0.2);
  padding: 0.75rem var(--space-md);
  align-items: center;
  justify-content: space-between;
}

.mobile-np-info {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  overflow: hidden;
  flex: 1;
  cursor: pointer;
}

.mobile-np-number {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--concert-gold);
  flex-shrink: 0;
}

.mobile-np-title {
  font-family: var(--font-serif);
  font-size: 0.9rem;
  color: var(--concert-cream);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mobile-np-play {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: none;
  border: 1.5px solid var(--concert-gold);
  border-radius: 50%;
  color: var(--concert-cream);
  cursor: pointer;
}

/* ---- Chapter 9 Concert Callout ---- */

.concert-callout {
  max-width: 480px;
  margin: 2rem auto;
  padding: 1.25rem 0;
  text-align: center;
  border-top: 1px solid rgba(196, 148, 58, 0.2);
  border-bottom: 1px solid rgba(196, 148, 58, 0.2);
}

.concert-callout p {
  font-family: var(--font-serif, 'Crimson Pro', Georgia, serif);
  font-size: 0.9rem;
  font-style: italic;
  line-height: 1.7;
  color: var(--cream, #E8DCC4);
  opacity: 0.72;
  margin: 0 0 0.6rem;
}

.concert-callout a {
  display: inline-block;
  font-family: var(--font-serif, 'Crimson Pro', Georgia, serif);
  font-size: 0.9rem;
  font-style: italic;
  color: var(--gold-primary, #C4943A);
  text-decoration: none;
  border-bottom: 1px solid rgba(196, 148, 58, 0.35);
  padding-bottom: 1px;
  letter-spacing: 0.01em;
  transition: color 0.3s ease, border-color 0.3s ease;
}

.concert-callout a:hover {
  color: #d4a84b;
  border-color: rgba(212, 168, 75, 0.7);
}


/* ---- Program Notes Panel ---- */

.ch-player-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  align-items: start;
}

.ch-player-col {
  min-width: 0;
}

.ch-program-panel {
  background: rgba(245, 240, 232, 0.04);
  border: 1px solid rgba(201, 168, 76, 0.12);
  border-radius: var(--radius-md);
  padding: var(--space-md);
}

.ch-program-heading {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-variant: small-caps;
  letter-spacing: 0.1em;
  color: var(--concert-gold);
  opacity: 0.6;
  margin-bottom: 0.75rem;
}

.ch-program-teaser {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--concert-cream);
  font-style: italic;
  margin: 0 0 0.75rem;
}

.ch-program-toggle {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  color: var(--concert-gold);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  opacity: 0.7;
  transition: opacity var(--transition-normal);
}

.ch-program-toggle:hover {
  opacity: 1;
}

/* Expanded section — hidden by default */
.ch-program-expanded {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 800ms ease, opacity 600ms ease;
}

.ch-program-panel--expanded .ch-program-expanded {
  max-height: 2000px;
  opacity: 1;
}

.ch-program-section {
  margin-top: var(--space-md);
}

.ch-program-section-label {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--concert-cream);
  opacity: 0.4;
  margin-bottom: 0.3rem;
}

.ch-program-arc,
.ch-program-note {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--concert-cream);
  opacity: 0.85;
  margin: 0;
}

.ch-program-divider {
  border: none;
  border-top: 1px solid rgba(201, 168, 76, 0.12);
  margin: var(--space-md) 0;
}

/* Architecture grid */
.ch-program-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem 1rem;
}

.ch-program-grid-item {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.ch-program-grid-item--full {
  grid-column: 1 / -1;
}

.ch-program-grid-label {
  font-family: var(--font-sans);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--concert-cream);
  opacity: 0.35;
}

.ch-program-key,
.ch-program-tempo,
.ch-program-leitmotif,
.ch-program-form,
.ch-program-dynamic,
.ch-program-beatitude {
  font-family: var(--font-serif);
  font-size: 0.88rem;
  color: var(--concert-cream);
  opacity: 0.8;
}

/* Leitmotif tier indicators */
.ch-leitmotif-full {
  color: var(--concert-gold);
  opacity: 1;
}

.ch-leitmotif-echo {
  color: #8a7030;
  opacity: 1;
}

.ch-leitmotif-absent {
  color: #555;
  opacity: 1;
}

/* Instrument pill tags */
.ch-program-instruments {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.ch-instrument-tag {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  color: var(--concert-cream);
  opacity: 0.8;
  border: 1px solid rgba(201, 168, 76, 0.3);
  border-radius: 100px;
  padding: 0.15rem 0.6rem;
  white-space: nowrap;
}

/* ═══════════════════════════════════════════════════
   Movement Accordion — attached to bottom of player
   ═══════════════════════════════════════════════════ */

.ch-accordion {
  border-top: 1px solid rgba(201, 168, 76, 0.15);
  margin-top: var(--space-lg);
}

.ch-accordion-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 0.85rem 1rem;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--concert-cream);
  transition: background 300ms ease;
}

.ch-accordion-trigger:hover {
  background: rgba(201, 168, 76, 0.06);
}

/* Accordion trigger label — now carries three styled spans */
.ch-accordion-label {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  color: var(--concert-cream);
  letter-spacing: 0.01em;
  text-align: left;
}

.ch-accordion-now-playing {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--concert-gold);
  margin-right: 0.35em;
}

.ch-accordion-nav-hint {
  font-family: var(--font-serif);
  font-size: 0.8rem;
  font-style: italic;
  color: var(--concert-cream);
  opacity: 0.35;
  margin-left: 0.5em;
}

.ch-accordion-chevron {
  color: var(--concert-gold);
  opacity: 0.6;
  transition: transform 350ms ease;
  flex-shrink: 0;
}

.ch-accordion-trigger[aria-expanded="true"] .ch-accordion-chevron {
  transform: rotate(180deg);
}

/* Accordion body — hidden by default */
.ch-accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 500ms ease;
}

.ch-accordion-body--open {
  max-height: 1200px;
}

/* Phase band header */
.ch-accordion-phase {
  padding: 0.5rem 0;
  border-top: 1px solid rgba(201, 168, 76, 0.08);
}

.ch-accordion-phase:first-child {
  border-top: none;
}

.ch-accordion-phase-label {
  font-family: var(--font-sans);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--concert-gold);
  opacity: 0.45;
  padding: 0.5rem 1rem 0.25rem;
}

/* Movement row inside accordion */
.ch-accordion-mvt {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  width: 100%;
  padding: 0.6rem 1rem;
  background: none;
  border: none;
  border-left: 3px solid transparent;
  cursor: pointer;
  text-align: left;
  transition: background 250ms ease, border-color 250ms ease;
}

.ch-accordion-mvt:hover {
  background: rgba(201, 168, 76, 0.07);
}

.ch-accordion-mvt--active {
  background: rgba(201, 168, 76, 0.12);
  border-left-color: var(--concert-gold);
}

.ch-accordion-mvt-num {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--concert-cream);
  opacity: 0.45;
  min-width: 1.4rem;
  transition: opacity 250ms ease, color 250ms ease;
}

.ch-accordion-mvt--active .ch-accordion-mvt-num {
  color: var(--concert-gold);
  opacity: 1;
}

.ch-accordion-mvt-title {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--concert-cream);
  opacity: 0.4;
  flex: 1;
  transition: opacity 250ms ease;
}

.ch-accordion-mvt--active .ch-accordion-mvt-title {
  opacity: 0.85;
}

.ch-accordion-mvt-duration {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  color: var(--concert-cream);
  opacity: 0.28;
  flex-shrink: 0;
}

.ch-accordion-mvt--active .ch-accordion-mvt-duration {
  opacity: 0.5;
}

/* ═══════════════════════════════════════════════════
   Easter Egg: Composition Notes + Architecture link (below player)
   ═══════════════════════════════════════════════════ */

.concert-hall-extras {
  max-width: 960px;
  margin: 0 auto;
  padding: var(--space-md) var(--space-md) var(--space-xl);
  display: flex;
  align-items: center;
  gap: 2rem;
  justify-content: center;
  flex-wrap: wrap;
}

.extras-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--concert-gold);
  font-family: 'Cormorant Garamond', 'Crimson Pro', Georgia, serif;
  font-size: 0.88rem;
  font-style: italic;
  letter-spacing: 0.02em;
  text-decoration: none;
  background: none;
  border: none;
  border-bottom: 1px solid rgba(201, 168, 76, 0.3);
  padding-bottom: 0.1rem;
  cursor: pointer;
  opacity: 0.6;
  transition: opacity 0.3s ease, border-color 0.3s ease;
}

.extras-link:hover,
.extras-link:focus-visible {
  opacity: 1;
  border-color: rgba(201, 168, 76, 0.7);
  outline: none;
}

.extras-link svg {
  flex-shrink: 0;
  opacity: 0.7;
}

/* =========================================
   ARCHITECTURE VISUAL MODAL
   ========================================= */

.arch-visual-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9000;
  align-items: center;
  justify-content: center;
}

.arch-visual-modal--open {
  display: flex;
}

.arch-visual-modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.88);
  cursor: pointer;
}

.arch-visual-modal-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 95vw;
  max-height: 95vh;
  padding: 1rem;
}

.arch-visual-modal-close {
  position: absolute;
  top: -0.25rem;
  right: -0.25rem;
  background: rgba(0, 0, 0, 0.6);
  border: 1px solid rgba(196, 148, 58, 0.3);
  border-radius: 50%;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: rgba(240, 230, 210, 0.8);
  transition: color 0.2s, border-color 0.2s;
  z-index: 2;
}

.arch-visual-modal-close:hover {
  color: #C4943A;
  border-color: rgba(196, 148, 58, 0.7);
}

.arch-visual-modal-img {
  display: block;
  max-width: 90vw;
  max-height: 80vh;
  width: auto;
  height: auto;
  object-fit: contain;
  border: 1px solid rgba(196, 148, 58, 0.2);
}

.arch-visual-modal-caption {
  margin: 0.75rem 0 0;
  max-width: 800px;
  font-family: 'Cormorant Garamond', 'Crimson Pro', Georgia, serif;
  font-size: 0.85rem;
  font-style: italic;
  color: rgba(240, 230, 210, 0.55);
  text-align: center;
  line-height: 1.5;
}

/* ═══════════════════════════════════════════════════
   Mode Toggle Bar — With / Without Narration
   ═══════════════════════════════════════════════════ */
.ch-mode-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 0.6rem 0;
  margin-top: 0.5rem;
  flex-wrap: wrap;
}
.ch-mode-label {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--concert-cream);
  opacity: 0.55;
  transition: opacity 300ms ease;
  user-select: none;
}
.ch-mode-label--right {
  opacity: 0.35;
}
/* When toggle is OFF (Without Narration active), flip opacities */
.ch-mode-toggle[aria-checked="false"] ~ .ch-mode-label--right,
.ch-mode-bar:has(.ch-mode-toggle[aria-checked="false"]) .ch-mode-label--right {
  opacity: 0.55;
}
.ch-mode-toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
}
.ch-mode-toggle-track {
  display: block;
  width: 42px;
  height: 24px;
  background: rgba(201, 168, 76, 0.18);
  border: 1px solid rgba(201, 168, 76, 0.35);
  border-radius: 12px;
  position: relative;
  transition: background 300ms ease, border-color 300ms ease;
}
.ch-mode-toggle[aria-checked="true"] .ch-mode-toggle-track {
  background: rgba(201, 168, 76, 0.28);
  border-color: rgba(201, 168, 76, 0.6);
}
.ch-mode-toggle-thumb {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 16px;
  height: 16px;
  background: var(--concert-gold);
  border-radius: 50%;
  transition: transform 300ms ease, opacity 300ms ease;
  opacity: 0.6;
}
.ch-mode-toggle[aria-checked="true"] .ch-mode-toggle-thumb {
  transform: translateX(0px);
  opacity: 1;
}
.ch-mode-toggle[aria-checked="false"] .ch-mode-toggle-thumb {
  transform: translateX(18px);
  opacity: 0.85;
}
.ch-mode-unavailable {
  font-family: var(--font-serif);
  font-size: 0.78rem;
  font-style: italic;
  color: var(--concert-cream);
  opacity: 0.38;
  width: 100%;
  text-align: center;
}

/* =========================================
   RESPONSIVE
   ========================================= */

@media (max-width: 768px) {
  .concert-hero,
  .concert-hall-hero {
    min-height: 35vh;
    background-attachment: scroll;
  }

  .concert-lobby-body {
    padding: var(--space-lg) var(--space-sm);
  }

  .concert-card-grid {
    grid-template-columns: 1fr;
  }

  .concert-hall-player {
    margin: 0 var(--space-sm);
    padding: var(--space-md) var(--space-sm) 0;
  }

  .ch-player-columns {
    grid-template-columns: 1fr;
  }

  .player-mvt-title {
    font-size: 1.4rem;
  }

  .concert-hall {
    padding-bottom: 70px;
  }

  .concert-hall-welcome {
    padding: var(--space-sm) var(--space-md);
  }

  .concert-hall-extras {
    gap: 1.25rem;
    padding: var(--space-sm) var(--space-md) var(--space-lg);
  }
}

@media (max-width: 480px) {
  .concert-hero-title {
    font-size: 2rem;
  }

  .concert-hall-title {
    font-size: 1.8rem;
  }

  .player-buttons {
    gap: var(--space-sm);
  }

  .player-btn-play {
    width: 48px;
    height: 48px;
  }

  .arch-visual-modal-img {
    max-width: 95vw;
    max-height: 75vh;
  }

  .extras-link {
    font-size: 0.82rem;
  }

  .ch-accordion-nav-hint {
    display: none; /* too long on small screens — drop the hint */
  }
}