/**
 * Piano Key — Styles partagés
 * ════════════════════════════════════════════════════════════
 * Fichier CSS unique pour toutes les pages HTML
 */

/* ── Google Fonts ── */
@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=Inter:wght@300;400;500;600&family=DM+Mono:wght@400;500&display=swap');

/* ── Reset ── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ── Variables CSS ── */
:root {
  --bg0: #09090f;
  --bg1: #0f0f18;
  --bg2: #16161f;
  --bg3: #1e1e2a;
  --bg4: #272734;
  --v:   #8B6FE8;
  --v2:  #a48ff0;
  --v3:  #c4b4f8;
  --vg:  rgba(139, 111, 232, 0.12);
  --vb:  rgba(139, 111, 232, 0.28);
  --text1: #eeeaf8;
  --text2: #8880a8;
  --text3: #4a4468;
  --border1:  rgba(255, 255, 255, 0.05);
  --borderv:  rgba(139, 111, 232, 0.22);
  --border2:  rgba(139, 111, 232, 0.15);
  --green: #3dd68c;
  --red:   #e85f5f;
  --topbar-h: 46px;
  --sidebar-w: 220px;
  --radius: 14px;
  --radius-sm: 8px;
  --trans: 0.18s ease;
}

/* ── Base ── */
html, body {
  height: 100%;
}

body {
  background: var(--bg0);
  color: var(--text1);
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

/* ── Fond animé (CSS only) ── */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 30% 25% at 20% 80%, rgba(139,111,232,0.06) 0%, transparent 70%),
    radial-gradient(ellipse 25% 20% at 80% 20%, rgba(139,111,232,0.05) 0%, transparent 70%);
  animation: bgShift 18s ease-in-out infinite alternate;
  pointer-events: none;
  z-index: 0;
}

/* ── Animations ── */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.85); }
}

@keyframes skeleton {
  0%, 100% { opacity: 0.4; }
  50%       { opacity: 0.7; }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

@keyframes bgShift {
  0%   { opacity: 0.6; transform: scale(1) translateY(0px); }
  50%  { opacity: 1;   transform: scale(1.05) translateY(-8px); }
  100% { opacity: 0.7; transform: scale(1) translateY(4px); }
}

/* ── Topbar ── */
.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--topbar-h);
  background: var(--bg1);
  border-bottom: 1px solid var(--border1);
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 12px;
  z-index: 100;
}

.topbar-logo {
  font-family: 'Instrument Serif', serif;
  font-size: 17px;
  color: var(--text1);
  display: flex;
  align-items: center;
  gap: 10px;
}

.piano-logo {
  border-radius: 3px;
  overflow: hidden;
  flex-shrink: 0;
  display: block;
}

.logo-text {
  font-family: 'Instrument Serif', serif;
  font-size: 17px;
  color: var(--text1);
  letter-spacing: 0.01em;
}

.logo-text em {
  font-style: italic;
  color: var(--v2);
}

.topbar-spacer { flex: 1; }

/* ── Layout ── */
.layout {
  display: flex;
  padding-top: var(--topbar-h);
  min-height: 100vh;
}

/* ── Sidebar ── */
.sidebar {
  width: var(--sidebar-w);
  background: var(--bg1);
  border-right: 1px solid var(--border1);
  position: fixed;
  top: var(--topbar-h);
  left: 0;
  bottom: 0;
  overflow-y: auto;
  padding: 12px 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  z-index: 50;
}

.sidebar-section {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text3);
  padding: 10px 10px 4px;
  margin-top: 8px;
}

.nv {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  color: var(--text2);
  font-size: 13.5px;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--trans), color var(--trans);
  white-space: nowrap;
}

.nv:hover {
  background: var(--bg3);
  color: var(--text1);
}

.nv.act {
  background: var(--vg);
  color: var(--v2);
  border: 1px solid var(--borderv);
}

.nv .nv-icon {
  font-size: 15px;
  opacity: 0.8;
  min-width: 18px;
  text-align: center;
}

/* ── Main ── */
.main {
  margin-left: var(--sidebar-w);
  flex: 1;
  padding: 28px 32px;
  max-width: 1100px;
  position: relative;
  z-index: 1;
}

/* ── Page Sections ── */
.page { display: none; }
.page.act {
  display: block;
  animation: fadeIn 0.2s ease;
}

/* ── Page Header ── */
.ph {
  margin-bottom: 24px;
}

/* Titre de page (Instrument Serif, aéré) */
.pt {
  font-family: 'Instrument Serif', serif;
  font-size: 26px;
  font-weight: 400;
  color: var(--text1);
  letter-spacing: 0.01em;
  line-height: 1.3;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Sous-titre descriptif */
.pd {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text3);
  letter-spacing: 0.01em;
  max-width: 560px;
}

/* Ancien style page header — conservé pour index/loops */
.ph-title {
  font-family: 'Instrument Serif', serif;
  font-size: 26px;
  font-weight: 400;
  color: var(--text1);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
  letter-spacing: 0.01em;
  line-height: 1.3;
}

.ph-desc {
  color: var(--text2);
  font-size: 13px;
  line-height: 1.6;
  letter-spacing: 0.01em;
  max-width: 560px;
}

/* ── Cards ── */
.card {
  background: var(--bg2);
  border: 1px solid var(--border1);
  border-radius: var(--radius);
  padding: 20px;
  position: relative;
  overflow: hidden;
  transition: border-color var(--trans);
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 120px;
  background: radial-gradient(ellipse at 50% -20%, rgba(139, 111, 232, 0.07) 0%, transparent 70%);
  opacity: 0;
  transition: opacity var(--trans);
  pointer-events: none;
}

.card:hover {
  border-color: var(--borderv);
}

.card:hover::before {
  opacity: 1;
}

.card-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text1);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: 0.01em;
}

/* ── Grilles ── */
.grid2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.grid4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

/* ── Badges ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 20px;
  letter-spacing: 0.04em;
}

.b-live {
  background: rgba(61, 214, 140, 0.12);
  color: var(--green);
  border: 1px solid rgba(61, 214, 140, 0.25);
}

.b-plan {
  background: var(--vg);
  color: var(--v2);
  border: 1px solid var(--borderv);
}

.b-adm {
  background: rgba(232, 95, 95, 0.1);
  color: var(--red);
  border: 1px solid rgba(232, 95, 95, 0.22);
}

.b-ok {
  background: rgba(61, 214, 140, 0.1);
  color: var(--green);
  border: 1px solid rgba(61, 214, 140, 0.22);
}

/* ── Tonalités ── */
#ton-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.ton {
  font-family: 'DM Mono', monospace;
  font-size: 12px;
  padding: 5px 10px;
  background: var(--bg3);
  border: 1px solid var(--border2);
  border-radius: 6px;
  color: var(--text2);
  cursor: pointer;
  transition: all var(--trans);
  user-select: none;
}

.ton:hover {
  background: var(--bg4);
  color: var(--text1);
  border-color: var(--borderv);
}

.ton.sel {
  background: var(--vg);
  border-color: var(--v);
  color: var(--v2);
}

/* ── Chips de style ── */
.chips-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-bottom: 16px;
}

.chip {
  font-size: 13px;
  font-weight: 500;
  padding: 6px 14px;
  background: var(--bg3);
  border: 1px solid var(--border2);
  border-radius: 20px;
  color: var(--text2);
  cursor: pointer;
  transition: all var(--trans);
  user-select: none;
}

.chip:hover {
  background: var(--bg4);
  color: var(--text1);
  border-color: var(--borderv);
}

.chip.sel {
  background: var(--vg);
  border-color: var(--v);
  color: var(--v2);
}

/* ── Bouton générer ── */
.gen-btn {
  width: 100%;
  padding: 11px 20px;
  background: var(--v);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--trans), transform var(--trans), box-shadow var(--trans);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.gen-btn:hover {
  background: var(--v2);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(139, 111, 232, 0.35);
}

.gen-btn:active {
  transform: translateY(0);
  box-shadow: none;
}

.gen-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* ── Accords ── */
.chord-cell {
  background: var(--bg3);
  border: 1px solid var(--border1);
  border-radius: 10px;
  padding: 14px 12px;
  text-align: center;
  transition: border-color var(--trans);
}

.chord-cell.root {
  border-color: var(--v);
  background: var(--vg);
}

.chord-name {
  font-family: 'DM Mono', monospace;
  font-size: 18px;
  font-weight: 500;
  color: var(--text1);
  margin-bottom: 4px;
}

.chord-degree {
  font-family: 'DM Mono', monospace;
  font-size: 11px;
  color: var(--v2);
  margin-bottom: 4px;
}

.chord-label {
  font-size: 11px;
  color: var(--text2);
}

/* Skeleton loading */
.chord-skeleton {
  background: var(--bg3);
  border: 1px solid var(--border1);
  border-radius: 10px;
  padding: 14px 12px;
  animation: skeleton 1.2s ease-in-out infinite;
}

.chord-skeleton .skel-line {
  height: 10px;
  border-radius: 5px;
  background: var(--bg4);
  margin-bottom: 8px;
}

.chord-skeleton .skel-line:last-child { margin-bottom: 0; }
.chord-skeleton .skel-line.lg { width: 70%; margin: 0 auto 8px; }
.chord-skeleton .skel-line.sm { width: 40%; margin: 0 auto; }

/* ── Sliders ── */
.sl-row {
  margin-bottom: 16px;
}

.sl-label {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text2);
  margin-bottom: 6px;
}

.sl-label span {
  font-family: 'DM Mono', monospace;
  color: var(--v3);
}

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 2px;
  background: var(--bg4);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--v2);
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

input[type="range"]::-moz-range-thumb {
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--v2);
  cursor: pointer;
  border: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

input[type="range"]:hover::-webkit-slider-thumb {
  transform: scale(1.3);
  box-shadow: 0 0 8px rgba(139, 111, 232, 0.6);
}

input[type="range"]:hover::-moz-range-thumb {
  transform: scale(1.3);
  box-shadow: 0 0 8px rgba(139, 111, 232, 0.6);
}

/* ── Loop rows ── */
.loop-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  transition: background var(--trans);
  cursor: pointer;
  border: 1px solid transparent;
}

.loop-row:hover {
  background: var(--bg3);
  border-color: var(--border1);
}

.loop-row.playing {
  background: var(--vg);
  border-color: var(--borderv);
}

/* Bouton play dans les loop-rows (loops.html) */
.loop-play-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--bg4);
  border: 1px solid var(--border1);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 11px;
  color: var(--text2);
  transition: all var(--trans);
}

.loop-row:hover .loop-play-btn,
.loop-row.playing .loop-play-btn {
  background: var(--v);
  border-color: var(--v);
  color: #fff;
}

/* Bouton play dans admin (triangle SVG-like) */
.play-ic {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--bg4);
  border: 1px solid var(--border1);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  cursor: pointer;
  transition: all var(--trans);
}

.loop-row:hover .play-ic,
.loop-row.playing .play-ic {
  background: var(--v);
  border-color: var(--v);
}

.tri-ic {
  width: 0;
  height: 0;
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
  border-left: 8px solid var(--text2);
  margin-left: 2px;
  transition: border-left-color var(--trans);
}

.loop-row:hover .tri-ic,
.loop-row.playing .tri-ic {
  border-left-color: #fff;
}

.loop-info {
  flex: 1;
  min-width: 0;
}

.loop-name {
  font-size: 13.5px;
  color: var(--text1);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.loop-cat {
  font-size: 11px;
  color: var(--text2);
  margin-top: 1px;
}

.loop-duration {
  font-family: 'DM Mono', monospace;
  font-size: 12px;
  color: var(--text3);
  flex-shrink: 0;
}

.loop-vol {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

/* ── Filtres catégorie ── */
.cat-btns,
.cat-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.cat-btn {
  font-size: 12px;
  font-weight: 500;
  padding: 5px 12px;
  background: var(--bg3);
  border: 1px solid var(--border2);
  border-radius: 20px;
  color: var(--text2);
  cursor: pointer;
  transition: all var(--trans);
  user-select: none;
}

.cat-btn:hover {
  color: var(--text1);
  border-color: var(--borderv);
}

/* Classes de sélection (sel = loops.html, s = admin) */
.cat-btn.sel,
.cat-btn.s {
  background: var(--vg);
  border-color: var(--v);
  color: var(--v2);
}

/* ── Bouton primaire général ── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 18px;
  background: var(--v);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-family: 'Inter', sans-serif;
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--trans), transform var(--trans), box-shadow var(--trans);
}

.btn-primary:hover {
  background: var(--v2);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(139, 111, 232, 0.35);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: var(--bg4);
  color: var(--text2);
  border: 1px solid var(--border1);
  border-radius: var(--radius-sm);
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--trans);
}

.btn-secondary:hover {
  background: var(--bg3);
  color: var(--text1);
  border-color: var(--borderv);
}

/* ── Note ── */
.note {
  font-size: 12px;
  color: var(--text3);
  margin-top: 10px;
  padding: 8px 10px;
  background: var(--bg3);
  border-radius: 6px;
  border-left: 2px solid var(--border2);
}

/* ── Error message ── */
.error-msg {
  font-size: 13px;
  color: var(--red);
  padding: 12px;
  background: rgba(232, 95, 95, 0.08);
  border: 1px solid rgba(232, 95, 95, 0.2);
  border-radius: var(--radius-sm);
  text-align: center;
}

/* ── Séparateur ── */
.sep {
  height: 1px;
  background: var(--border1);
  margin: 8px 0;
}

/* ── Utilitaires ── */
.cl { color: var(--text2); }
.mt { margin-top: 12px; }
.mb { margin-bottom: 12px; }
.bold { font-weight: 600; }
.mono { font-family: 'DM Mono', monospace; }
.center { text-align: center; }
.flex { display: flex; align-items: center; gap: 8px; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.w100 { width: 100%; }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--bg4); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text3); }

/* ── Quiz ── */

/* Cartes de niveau (écran démarrage) */
.level-card {
  background: var(--bg3);
  border: 1px solid var(--border1);
  border-radius: 12px;
  padding: 1.1rem .75rem;
  text-align: center;
  cursor: pointer;
  transition: all .2s;
}
.level-card:hover {
  border-color: var(--borderv);
  background: var(--vg);
  transform: translateY(-2px);
}
.level-card.selected {
  border-color: var(--v);
  background: var(--vg);
  box-shadow: 0 0 20px rgba(139,111,232,.2);
}
.level-icon  { font-size: 24px; margin-bottom: .5rem; }
.level-name  { font-size: 14px; font-weight: 500; color: var(--text1); margin-bottom: .25rem; }
.level-desc  { font-size: 12px; color: var(--v2); font-family: 'DM Mono',monospace; margin-bottom: .2rem; }
.level-detail{ font-size: 11px; color: var(--text3); }

/* Bouton "Écouter la note" */
.listen-btn {
  display: flex; align-items: center; justify-content: center; gap: .6rem;
  width: 100%; padding: 13px; border-radius: 10px;
  border: 1px solid var(--borderv); background: var(--vg);
  color: var(--v2); font-size: 14px; font-weight: 500;
  cursor: pointer; transition: all .2s;
  font-family: 'Inter', sans-serif; margin-bottom: 1.1rem;
}
.listen-btn:hover { background: rgba(139,111,232,.2); transform: translateY(-1px); }
.listen-btn.playing { opacity: .6; pointer-events: none; }
.listen-btn:disabled { opacity: .4; cursor: default; transform: none; }

/* Boutons de réponse */
.note-btn {
  padding: 12px 4px; border-radius: 9px;
  border: 1px solid var(--border1); background: var(--bg3);
  color: var(--text1); font-size: 13px; font-weight: 500;
  cursor: pointer; transition: all .18s;
  font-family: 'DM Mono', monospace; text-align: center;
}
.note-btn:hover:not(:disabled) {
  border-color: var(--v); color: var(--v2);
  background: var(--vg); transform: translateY(-1px);
}
.note-btn.correct {
  background: rgba(61,214,140,0.12);
  border-color: rgba(61,214,140,0.3);
  color: #3dd68c;
}
.note-btn.wrong {
  background: rgba(224,85,85,0.12);
  border-color: rgba(224,85,85,0.3);
  color: #e05555;
}
.note-btn:disabled { cursor: default; }

/* Bouton "Question suivante" */
.next-btn {
  width: 100%; padding: 10px; border-radius: 9px;
  border: none; background: var(--v); color: #fff;
  font-size: 13px; font-weight: 500; cursor: pointer;
  transition: all .2s; font-family: 'Inter',sans-serif;
  margin-top: .9rem; display: none;
}
.next-btn:hover { background: var(--v2); transform: translateY(-1px); }
.next-btn.show  { display: block; }

/* Feedback correct / wrong */
.feedback {
  border-radius: 8px; padding: .55rem; text-align: center;
  font-size: 13px; font-weight: 500; margin-bottom: .9rem;
}
.feedback.correct {
  background: rgba(61,214,140,0.12);
  color: #3dd68c;
  border: 1px solid rgba(61,214,140,0.3);
}
.feedback.wrong {
  background: rgba(224,85,85,0.12);
  color: #e05555;
  border: 1px solid rgba(224,85,85,0.3);
}
.feedback.hidden { display: none; }

/* Barre de progression */
.progress-bar {
  height: 3px; background: var(--bg4);
  border-radius: 2px; overflow: hidden;
}
.progress-bar-fill {
  height: 100%; background: var(--v);
  border-radius: 2px; transition: width .3s ease;
}

/* Grille de boutons de réponse (colonnes dynamiques via JS) */
.note-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-bottom: 4px;
}

/* Cercle score final */
.score-circle {
  width: 110px; height: 110px; border-radius: 50%;
  border: 2px solid var(--v); margin: 0 auto 1.25rem;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  background: var(--vg); box-shadow: 0 0 30px rgba(139,111,232,.2);
}
.score-num   { font-family:'DM Mono',monospace; font-size:38px; font-weight:300; color:var(--v2); line-height:1; }
.score-denom { font-size:11px; color:var(--text3); margin-top:2px; }

/* Stats finales (cartes 3 colonnes) */
.score-stat  { background:var(--bg3); border-radius:8px; padding:.6rem .4rem; text-align:center; border:1px solid var(--border1); }
.stat-num    { font-family:'DM Mono',monospace; font-size:18px; color:var(--v2); }
.stat-lbl    { font-size:9px; color:var(--text3); margin-top:2px; text-transform:uppercase; letter-spacing:.06em; }

/* Panneau notes toggleables (colonne droite) */
.option-note {
  display: flex; align-items: center; justify-content: space-between;
  padding: .45rem .7rem; border-radius: 7px;
  background: var(--bg3); border: 1px solid var(--border1);
  margin-bottom: 4px; cursor: pointer; transition: all .15s;
}
.option-note:hover { border-color: var(--borderv); }
.option-note.on    { background: var(--vg); border-color: var(--v); }
.option-name { font-size:12px; font-family:'DM Mono',monospace; color:var(--text1); }
.option-dot  {
  width:12px; height:12px; border-radius:50%;
  border:1.5px solid var(--border1); transition:all .15s; flex-shrink:0;
}
.option-note.on .option-dot { background:var(--v); border-color:var(--v); }

/* ── Drums ── */
.drum-card-title {
  font-family: 'Instrument Serif', serif;
  font-size: 18px;
  font-weight: 400;
  letter-spacing: 0.01em;
  color: var(--text1);
  margin-bottom: 4px;
}

.time-tag {
  display: inline-block;
  font-family: 'DM Mono', monospace;
  font-size: 11px;
  padding: 2px 7px;
  background: var(--bg4);
  border: 1px solid var(--border1);
  border-radius: 4px;
  color: var(--text2);
  margin-bottom: 16px;
}

.bpm-display {
  font-family: 'DM Mono', monospace;
  font-size: 42px;
  font-weight: 500;
  color: var(--v2);
  text-align: center;
  line-height: 1;
  margin-bottom: 2px;
}

.bpm-unit {
  font-family: 'DM Mono', monospace;
  font-size: 11px;
  color: var(--text3);
  text-align: center;
  margin-bottom: 14px;
}

.drum-btns {
  display: flex;
  gap: 8px;
  margin-top: 4px;
}

.btn-play, .btn-stop {
  flex: 1;
  padding: 9px 0;
  border: none;
  border-radius: var(--radius-sm);
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--trans);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.btn-play {
  background: var(--v);
  color: #fff;
}

.btn-play:hover {
  background: var(--v2);
  transform: translateY(-1px);
  box-shadow: 0 3px 14px rgba(139, 111, 232, 0.35);
}

.btn-play.playing {
  background: rgba(61, 214, 140, 0.15);
  color: var(--green);
  border: 1px solid rgba(61, 214, 140, 0.3);
}

.btn-stop {
  background: var(--bg4);
  color: var(--text2);
  border: 1px solid var(--border1);
}

.btn-stop:hover {
  background: var(--bg3);
  color: var(--text1);
}

/* ── Player card avec waveform ── */
.player-card {
  background: var(--bg2);
  border: 1px solid var(--border1);
  border-radius: 14px;
  padding: 1.1rem;
  margin-bottom: 10px;
  transition: border-color .2s;
}
.player-card:hover { border-color: var(--borderv); }
.player-card.active { border-color: var(--borderv); }

.player-top {
  display: flex;
  align-items: center;
  gap: .75rem;
  margin-bottom: .9rem;
}

.play-btn {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--v);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all .18s;
}
.play-btn:hover { background: var(--v2); transform: scale(1.07); }

.wf-container {
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: .75rem;
  background: var(--bg3);
  cursor: pointer;
}

.track-time {
  font-family: 'DM Mono', monospace;
  font-size: 11px;
  color: var(--text2);
  white-space: nowrap;
}

.empty-msg {
  padding: 1.5rem;
  text-align: center;
  color: var(--text3);
  font-size: 13px;
  line-height: 1.6;
}

/* ── Backing Track ── */

.status-row {
  display: flex; align-items: center; gap: .75rem;
  padding: .6rem .9rem; background: var(--bg3);
  border-radius: 8px; margin-bottom: 1rem;
}
.status-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--text3); flex-shrink: 0;
}
.status-dot.playing {
  background: var(--green);
  box-shadow: 0 0 8px rgba(61,214,140,.6);
  animation: statusPulse 1s infinite;
}
@keyframes statusPulse { 0%,100%{opacity:1} 50%{opacity:.4} }
.status-txt  { font-size: 12px; color: var(--text2); }
.bar-counter { margin-left: auto; font-family: 'DM Mono',monospace; font-size: 11px; color: var(--v2); }

.backing-controls {
  display: grid;
  grid-template-columns: 1fr 1fr 200px;
  gap: 10px;
  margin-bottom: 12px;
}
.ctrl-card {
  background: var(--bg2); border: 1px solid var(--border1);
  border-radius: 14px; padding: 1rem;
  transition: border-color .2s;
}
.ctrl-card:hover { border-color: var(--borderv); }

/* Chips backing (classe propre pour éviter conflit avec .chips-wrap harmony) */
.backing-chips-wrap {
  display: flex; flex-wrap: wrap; gap: 4px;
  max-height: 120px; overflow-y: auto;
}
.backing-chips-wrap::-webkit-scrollbar { width: 2px; }
.backing-chips-wrap::-webkit-scrollbar-thumb { background: var(--bg4); }

/* Chip sélectionnable (backing) */
.sel-chip {
  font-family: 'DM Mono', monospace;
  font-size: 11px; padding: 3px 8px;
  background: var(--bg3); border: 1px solid var(--border2);
  border-radius: 5px; color: var(--text2);
  cursor: pointer; transition: all var(--trans); user-select: none;
}
.sel-chip:hover  { border-color: var(--borderv); color: var(--text1); }
.sel-chip.s      { background: var(--vg); border-color: var(--v); color: var(--v2); }

.bpm-big {
  font-family: 'DM Mono', monospace;
  font-size: 36px; font-weight: 300;
  color: var(--v2); line-height: 1;
}
.bpm-sub {
  font-size: 9px; color: var(--text3);
  text-transform: uppercase; letter-spacing: .08em;
  margin-bottom: .5rem;
}

/* Grille 4 accords */
.chord-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px; margin: .75rem 0 1rem;
}
.chord-cell {
  background: var(--bg3); border: 1px solid var(--border1);
  border-radius: 10px; padding: 1rem .4rem;
  text-align: center; transition: all .2s;
  position: relative; overflow: hidden;
}
.chord-cell::after {
  content: ''; position: absolute;
  bottom: 0; left: 0; right: 0; height: 2px;
  background: var(--v); opacity: 0; transition: opacity .2s;
}
.chord-cell.active          { background: var(--vg); border-color: var(--v); box-shadow: 0 0 24px rgba(139,111,232,.2); }
.chord-cell.active::after   { opacity: 1; }
.chord-cell.placeholder     { opacity: .35; }
.chord-name                 { font-family: 'DM Mono',monospace; font-size: 16px; color: var(--text1); }
.chord-cell.active .chord-name { color: var(--v2); }
.chord-deg                  { font-size: 9px; color: var(--text3); margin-top: 4px; }
.chord-cell.active .chord-deg  { color: rgba(164,143,240,.5); }
.beat-indicator  { display: flex; justify-content: center; gap: 3px; margin-top: 7px; }
.beat-dot        { width: 5px; height: 5px; border-radius: 50%; background: var(--bg4); transition: background .08s; }
.beat-dot.lit    { background: var(--v2); }

/* Transport */
.transport-row { display: flex; gap: 8px; }
.transport-row .gen-btn { flex: 1; width: auto; }

.play-backing-btn {
  padding: 10px 18px; border-radius: 9px;
  border: none; background: var(--green);
  color: #000; font-size: 13px; font-weight: 500;
  cursor: pointer; transition: all .2s;
  font-family: 'Inter', sans-serif;
}
.play-backing-btn:hover    { opacity: .85; transform: translateY(-1px); }
.play-backing-btn:disabled { opacity: .3; cursor: default; transform: none; }

.stop-backing-btn {
  padding: 10px 14px; border-radius: 9px;
  border: 1px solid var(--border1); background: transparent;
  color: var(--text2); font-size: 13px; cursor: pointer;
  transition: all .18s; font-family: 'Inter', sans-serif;
}
.stop-backing-btn:hover { border-color: var(--text2); color: var(--text1); }

/* Mixer */
.mixer-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
}
.mix-channel {
  background: var(--bg3); border: 1px solid var(--border1);
  border-radius: 10px; padding: .75rem .5rem; text-align: center;
}
.mix-label {
  font-size: 10px; color: var(--text3);
  text-transform: uppercase; letter-spacing: .07em;
  margin-bottom: .4rem;
}
.mix-vol-display {
  font-family: 'DM Mono',monospace;
  font-size: 13px; color: var(--v2); margin-bottom: .4rem;
}
.mix-slider {
  width: 100%; -webkit-appearance: none;
  height: 2px; background: var(--bg4);
  border-radius: 2px; outline: none; cursor: pointer;
}
.mix-slider::-webkit-slider-thumb {
  -webkit-appearance: none; width: 13px; height: 13px;
  border-radius: 50%; background: var(--v2);
  border: 2px solid var(--bg0); transition: transform .15s;
}
.mix-slider::-webkit-slider-thumb:hover { transform: scale(1.3); }

/* ── Responsive basique ── */
@media (max-width: 768px) {
  .sidebar { display: none; }
  .main { margin-left: 0; padding: 20px 16px; }
  .grid2 { grid-template-columns: 1fr; }
  .grid4 { grid-template-columns: repeat(2, 1fr); }
}