:root {
  color-scheme: light dark;
  --bg:#0f1115; --panel:#171a21; --panel2:#20242d; --text:#f3f4f6; --muted:#a7afbd;
  --accent:#5eead4; --accent2:#22d3ee; --danger:#fb7185; --neck:#b9824f; --fret:#e5e7eb;
  --string:#e7e7e7; --dot:#f8fafc; --dotText:#0f172a; --root:#fbbf24; --open:#86efac;
}
*{box-sizing:border-box}
.is-hidden{display:none!important}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;background:radial-gradient(circle at top,#1b2330 0,var(--bg) 45%);color:var(--text);min-height:100vh}
.app{max-width:1480px;margin:0 auto;padding:28px}
header{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:22px;flex-wrap:wrap}
h1{font-size:clamp(1.6rem,3vw,2.6rem);margin:0;letter-spacing:-.04em}
.subtitle{color:var(--muted);margin:.35rem 0 0}
.help-btn{
  appearance:none;border:1px solid #4f6674;background:linear-gradient(180deg,#22313d,#18232c);
  color:#eef7fb;border-radius:12px;padding:10px 14px;font:inherit;font-weight:800;cursor:pointer;
  display:inline-flex;align-items:center;gap:8px;transition:.15s ease
}
.help-btn:hover{border-color:var(--accent2);box-shadow:0 0 0 3px #22d3ee1b;transform:translateY(-1px)}
.help-btn:active{transform:translateY(0)}
.notice-overlay{
  position:fixed;inset:0;background:#05080dbf;backdrop-filter:blur(5px);z-index:9999;
  display:none;align-items:center;justify-content:center;padding:20px
}
.notice-overlay.open{display:flex}
.notice-dialog{
  width:min(900px,96vw);max-height:90vh;overflow:auto;background:linear-gradient(180deg,#1a1f28,#101419);
  border:1px solid #343c49;border-radius:20px;box-shadow:0 30px 90px #000a
}
.notice-head{
  position:sticky;top:0;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:18px 20px;background:#171c24ed;backdrop-filter:blur(8px);border-bottom:1px solid #303744
}
.notice-head h2{margin:0;font-size:1.35rem}
.notice-close{
  width:36px;height:36px;border-radius:50%;border:1px solid #414a58;background:#202630;color:#fff;
  font-size:1.3rem;cursor:pointer
}
.notice-close:hover{border-color:var(--danger);background:#3b1820}
.notice-body{padding:20px}
.notice-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.notice-block{background:#0e1117;border:1px solid #292f3a;border-radius:14px;padding:14px}
.notice-block h3{margin:0 0 8px;font-size:1rem}
.notice-block p,.notice-block li{color:#c7ced9;font-size:.91rem;line-height:1.55}
.notice-block p{margin:.4rem 0}
.notice-block ul{margin:.4rem 0 0;padding-left:1.15rem}
.notice-kbd{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:#121820;border:1px solid #313a47;border-radius:6px;padding:1px 6px}
.notice-tip{margin-top:14px;background:#122229;border:1px solid #29515a;border-radius:14px;padding:13px 14px;color:#d7fffa;font-size:.9rem}
@media(max-width:760px){.notice-grid{grid-template-columns:1fr}}
.controls{display:grid;grid-template-columns:repeat(5,minmax(150px,1fr));gap:12px;background:color-mix(in srgb,var(--panel) 94%,transparent);padding:16px;border:1px solid #2c3240;border-radius:16px;box-shadow:0 18px 45px #0006}
label{display:grid;gap:7px;font-size:.82rem;color:var(--muted);font-weight:700;letter-spacing:.04em;text-transform:uppercase}
select{width:100%;font:inherit;color:var(--text);background:var(--panel2);border:1px solid #343b49;border-radius:11px;padding:11px 12px;outline:none}
select:focus{border-color:var(--accent);box-shadow:0 0 0 3px #5eead426}
.play-btn{
  appearance:none;border:1px solid #35545a;background:linear-gradient(180deg,#17383b,#102a2d);
  color:#dffdfa;border-radius:11px;padding:10px 14px;font:inherit;font-weight:800;cursor:pointer;
  display:inline-flex;align-items:center;gap:8px;transition:.15s ease;white-space:nowrap
}
.play-btn:hover{transform:translateY(-1px);border-color:var(--accent);box-shadow:0 0 0 3px #5eead41a}
.play-btn:active{transform:translateY(0)}
.play-btn .icon{font-size:1.05rem}
.card-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.card{margin-top:18px;background:linear-gradient(180deg,#1a1e26,#12151a);border:1px solid #2b303b;border-radius:20px;overflow:hidden;box-shadow:0 24px 60px #0007}
.card-head{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 20px;border-bottom:1px solid #2b303b;flex-wrap:wrap}
.chord-name{display:flex;align-items:baseline;gap:12px}
.chord-name strong{font-size:2rem;letter-spacing:-.04em}
.fingering{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;color:var(--muted);background:#0d1015;padding:7px 10px;border-radius:9px;border:1px solid #2a2f39}
.legend{display:flex;gap:14px;flex-wrap:wrap;font-size:.85rem;color:var(--muted)}
.key{display:inline-flex;align-items:center;gap:7px}
.swatch{width:12px;height:12px;border-radius:50%;display:inline-block;background:var(--dot)}
.swatch.root{background:var(--root)}
.barre-line{fill:#111827;stroke:#f8fafc;stroke-width:1.5;opacity:.94}
.barre-label{fill:#f8fafc;font-size:9px;font-weight:900;font-family:system-ui}
.neck-wrap{padding:16px 10px 8px;overflow:auto}
svg{width:100%;min-width:980px;height:auto;display:block}
.info{display:grid;grid-template-columns:1fr 1fr;gap:12px;padding:0 20px 20px}
.info-box{background:#0e1117;border:1px solid #292e39;border-radius:13px;padding:12px 14px}
.info-title{font-size:.75rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-bottom:6px}
.notes{font-size:1.05rem;font-weight:700;word-spacing:.3rem}
footer{color:#737b89;font-size:.78rem;margin-top:13px;text-align:right}
.progression-generator{
  margin-top:18px;background:linear-gradient(180deg,#181d25,#11151b);
  border:1px solid #2b303b;border-radius:20px;padding:18px 20px;
  box-shadow:0 20px 50px #0005
}
.generator-head{
  display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  flex-wrap:wrap;margin-bottom:14px
}
.generator-head h2{font-size:1.25rem;margin:0}
.generator-subtitle{color:var(--muted);font-size:.84rem;line-height:1.45;margin-top:4px;max-width:900px}
.generator-controls{
  display:grid;grid-template-columns:repeat(5,minmax(150px,1fr));gap:10px;
  align-items:end
}
.generator-controls label{
  background:#0e1117;border:1px solid #292f3a;border-radius:12px;padding:10px
}
.generator-actions{
  display:flex;gap:8px;flex-wrap:wrap;margin-top:12px
}
.generator-btn{
  appearance:none;border:1px solid #42696d;background:linear-gradient(180deg,#1d4549,#153337);
  color:#e7fffc;border-radius:11px;padding:10px 13px;font:inherit;font-weight:900;cursor:pointer;
  transition:.14s ease
}
.generator-btn.secondary{background:#19212a;border-color:#3a4554;color:#e5e9ef}
.generator-btn:hover{border-color:var(--accent);transform:translateY(-1px)}
.generator-preview{
  margin-top:14px;background:#0d1117;border:1px solid #2c3440;border-radius:14px;padding:13px
}
.generator-preview-head{
  display:flex;justify-content:space-between;gap:12px;align-items:center;flex-wrap:wrap;margin-bottom:10px
}
.generator-preview-title{font-size:.76rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}
.generator-summary{font-size:.75rem;color:#98a3b2}
.generator-chords{display:flex;align-items:center;gap:7px;flex-wrap:wrap}
.generator-chip{
  display:inline-flex;align-items:center;gap:6px;padding:7px 10px;border-radius:999px;
  border:1px solid #364453;background:#151c24;color:#eafffb;font-size:.82rem;font-weight:900
}
.generator-chip .roman{color:#8dd9d0;font-size:.7rem}
.generator-arrow{color:#6f7b8b;font-weight:900}
.generator-note{margin-top:9px;color:#788493;font-size:.72rem;line-height:1.45}
@media(max-width:1050px){.generator-controls{grid-template-columns:repeat(3,1fr)}}
@media(max-width:720px){.generator-controls{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.generator-controls{grid-template-columns:1fr}}
.metronome-section{
  margin-top:18px;background:linear-gradient(180deg,#181d25,#11151b);
  border:1px solid #2b303b;border-radius:20px;padding:18px 20px;
  box-shadow:0 20px 50px #0005
}
.metro-head{
  display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  flex-wrap:wrap;margin-bottom:15px
}
.metro-head h2{font-size:1.25rem;margin:0}
.metro-subtitle{color:var(--muted);font-size:.84rem;line-height:1.45;margin-top:4px}
.metro-status{
  min-width:140px;text-align:center;background:#0d1117;border:1px solid #303744;
  border-radius:13px;padding:9px 12px
}
.metro-status strong{display:block;font-size:1.25rem;color:#e8fffc}
.metro-status span{display:block;color:var(--muted);font-size:.72rem;margin-top:2px}
.metro-main{
  display:grid;grid-template-columns:minmax(250px,1.15fr) minmax(240px,1fr) minmax(240px,1fr);
  gap:14px
}
.metro-panel{
  background:#0e1117;border:1px solid #292f3a;border-radius:14px;padding:14px;
  display:grid;gap:12px;align-content:start
}
.metro-panel h3{font-size:.86rem;margin:0;color:#dce4ee;text-transform:uppercase;letter-spacing:.07em}
.metro-bpm-line{display:grid;grid-template-columns:44px minmax(82px,110px) 44px;gap:8px;align-items:center;justify-content:center}
.metro-bpm{
  width:100%;font:900 1.8rem/1 system-ui;text-align:center;color:#fff;
  background:#151b23;border:1px solid #3a4351;border-radius:11px;padding:10px 6px
}
.metro-small-btn,.metro-action,.metro-preset,.accent-beat{
  appearance:none;font:inherit;cursor:pointer;transition:.14s ease
}
.metro-small-btn{
  height:42px;border:1px solid #3a4554;background:#19212a;color:#eef4fb;border-radius:10px;
  font-weight:900;font-size:1.1rem
}
.metro-small-btn:hover,.metro-preset:hover,.accent-beat:hover{border-color:var(--accent);transform:translateY(-1px)}
.metro-slider{width:100%;accent-color:var(--accent)}
.metro-range-labels{display:flex;justify-content:space-between;color:#737e8d;font-size:.7rem;margin-top:-8px}
.metro-actions{display:grid;grid-template-columns:1.3fr 1fr;gap:8px}
.metro-action{
  border:1px solid #42696d;background:linear-gradient(180deg,#1d4549,#153337);
  color:#e7fffc;border-radius:11px;padding:11px 12px;font-weight:900
}
.metro-action.secondary{background:#19212a;border-color:#3a4554;color:#e5e9ef}
.metro-action:hover{border-color:var(--accent);transform:translateY(-1px)}
.metro-action.running{
  border-color:#fbbf24;color:#fff3c4;background:linear-gradient(180deg,#4c3e1b,#342b16)
}
.metro-grid-2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.metro-grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.metro-field{display:grid;gap:6px}
.metro-field>span,.metro-check span{font-size:.72rem;color:#9aa5b3;font-weight:800;text-transform:uppercase;letter-spacing:.05em}
.metro-field input[type="number"],.metro-field select{
  width:100%;font:inherit;color:var(--text);background:#171d25;border:1px solid #343d49;
  border-radius:9px;padding:8px 9px;outline:none
}
.metro-field input[type="number"]:focus,.metro-field select:focus{border-color:var(--accent)}
.metro-check{
  display:flex;align-items:center;gap:8px;background:#121821;border:1px solid #2d3541;
  border-radius:10px;padding:9px 10px
}
.metro-check input{accent-color:var(--accent)}
.metro-presets{display:flex;flex-wrap:wrap;gap:6px}
.metro-preset{
  border:1px solid #35404d;background:#151b23;color:#cfd7e2;border-radius:999px;
  padding:5px 9px;font-size:.72rem;font-weight:800
}
.metro-beats{
  display:flex;align-items:center;justify-content:center;gap:7px;flex-wrap:wrap;
  min-height:34px;padding:4px 0
}
.metro-beat{
  width:22px;height:22px;border-radius:50%;background:#222a34;border:2px solid #3d4857;
  transition:.08s ease
}
.metro-beat.accent{border-color:#fbbf24}
.metro-beat.active{background:#e7fffc;border-color:#5eead4;transform:scale(1.25);box-shadow:0 0 16px #5eead488}
.metro-beat.active.accent{background:#fbbf24;border-color:#fde68a;box-shadow:0 0 18px #fbbf2490}
.accent-pattern{display:flex;gap:6px;flex-wrap:wrap}
.accent-beat{
  min-width:31px;height:31px;border-radius:8px;border:1px solid #36404d;background:#151b23;
  color:#aeb8c5;font-weight:900;font-size:.76rem
}
.accent-beat.active{background:#4b3d16;border-color:#fbbf24;color:#fff1b8}
.metro-readout{
  display:grid;grid-template-columns:repeat(3,1fr);gap:8px
}
.metro-readout>div{
  background:#111720;border:1px solid #2d3540;border-radius:10px;padding:8px;text-align:center
}
.metro-readout strong{display:block;font-size:1rem}
.metro-readout span{font-size:.65rem;color:#7e8998;text-transform:uppercase}
.metro-help{font-size:.74rem;color:#7f8998;line-height:1.45}
.metro-trainer-box{
  display:grid;gap:9px;padding:10px;background:#111720;border:1px solid #2d3540;border-radius:11px
}
@media(max-width:1050px){.metro-main{grid-template-columns:1fr 1fr}.metro-panel:last-child{grid-column:1/-1}}
@media(max-width:720px){.metro-main{grid-template-columns:1fr}.metro-panel:last-child{grid-column:auto}.metro-grid-3{grid-template-columns:1fr 1fr}.metro-readout{grid-template-columns:1fr 1fr 1fr}}
.select-btn{
  appearance:none;border:1px solid #4f6f73;background:linear-gradient(180deg,#24464a,#173438);
  color:#e8fffc;border-radius:11px;padding:10px 14px;font:inherit;font-weight:800;cursor:pointer;
  display:inline-flex;align-items:center;gap:8px;transition:.15s ease;white-space:nowrap
}
.select-btn:hover:not(:disabled){transform:translateY(-1px);border-color:var(--accent);box-shadow:0 0 0 3px #5eead41a}
.select-btn:disabled{opacity:.55;cursor:default}
.view-toggle-btn[aria-pressed="true"]{
  border-color:var(--accent);background:linear-gradient(180deg,#28575a,#194044);
  box-shadow:0 0 0 3px #5eead41a
}
.selected-section{
  margin-top:18px;background:linear-gradient(180deg,#171b22,#111419);
  border:1px solid #2b303b;border-radius:20px;padding:18px 20px;box-shadow:0 20px 50px #0005
}
.selected-head{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;margin-bottom:14px}
.selected-head h2{font-size:1.25rem;margin:0}
.selected-count{color:var(--muted);font-size:.9rem}
.selected-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.progression-btn{
  appearance:none;border:1px solid #46686d;background:linear-gradient(180deg,#1d4549,#153337);
  color:#e7fffc;border-radius:11px;padding:9px 13px;font:inherit;font-weight:850;cursor:pointer;
  display:inline-flex;align-items:center;gap:8px;transition:.15s ease
}
.progression-btn:hover:not(:disabled){transform:translateY(-1px);border-color:var(--accent);box-shadow:0 0 0 3px #5eead41a}
.progression-btn:disabled{opacity:.45;cursor:not-allowed}
.progression-btn.playing{border-color:#fbbf24;color:#fff4c2;background:linear-gradient(180deg,#4a3c1b,#342b16)}
.selected-empty{color:var(--muted);padding:10px 2px}
.selected-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:14px}
.chord-diagram-card{
  position:relative;background:#0e1117;border:1px solid #2b303b;border-radius:14px;padding:12px;
  display:grid;justify-items:center;gap:8px
}
.chord-diagram-title{font-size:1.05rem;font-weight:900;letter-spacing:-.02em}
.chord-diagram-frets{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;color:var(--muted);font-size:.78rem}
.finger-summary{font-size:.72rem;color:#aab4c2;text-align:center;line-height:1.45}
.diagram-svg{width:150px;min-width:0;height:190px}
.remove-chord{
  position:absolute;top:8px;right:8px;width:28px;height:28px;border-radius:50%;
  border:1px solid #3a404c;background:#171b22;color:#b8c0cd;cursor:pointer;font-size:1rem;line-height:1
}
.remove-chord:hover{border-color:var(--danger);color:#fff;background:#3a1720}
.next-chords{width:100%;border-top:1px solid #252b35;padding-top:10px;margin-top:2px}
.next-chords-title{font-size:.7rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-bottom:4px;text-align:center}
.next-chords-context{font-size:.68rem;color:#7f8998;text-align:center;margin-bottom:8px}
.next-chords-advice{margin:0 auto 9px;padding:7px 10px;border:1px solid #69f6e536;border-radius:10px;background:#10262a;color:#bff8f1;font-size:.72rem;line-height:1.4;text-align:center}
.next-chords-list{display:flex;flex-wrap:wrap;justify-content:center;gap:6px}
.next-chord-chip{
  appearance:none;border:1px solid #33414c;background:#151c22;color:#d8f7f2;border-radius:999px;
  padding:5px 9px;font:inherit;font-size:.78rem;font-weight:800;cursor:pointer;transition:.14s ease;
  display:inline-flex;align-items:center;gap:6px
}
.next-chord-degree{color:#8dd9d0;font-size:.68rem;font-weight:900;letter-spacing:.03em}
.next-chord-chip.recommended{border-color:#61e9da;background:#173135;box-shadow:0 0 0 1px #61e9da24,0 0 14px #2dd4bf18}
.next-chord-chip.recommended::before{content:'★';color:#7ff7e9;font-size:.64rem}
.next-chord-chip:hover{border-color:var(--accent);background:#183034;transform:translateY(-1px)}
.next-chord-chip:active{transform:translateY(0)}
.next-chords-waiting{
  width:100%;border-top:1px solid #252b35;padding-top:10px;margin-top:2px;
  color:#7f8998;font-size:.72rem;line-height:1.45;text-align:center
}
@media(max-width:760px){.app{padding:16px}.controls{grid-template-columns:1fr}.info{grid-template-columns:1fr}.selected-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}}

/* =========================================================
   RESPONSIVE MOBILE / TABLETTE
   ========================================================= */
html{
  -webkit-text-size-adjust:100%;
  text-size-adjust:100%;
}
body{
  overflow-x:hidden;
}
.app{
  width:100%;
  padding:
    max(14px,env(safe-area-inset-top))
    max(14px,env(safe-area-inset-right))
    max(18px,env(safe-area-inset-bottom))
    max(14px,env(safe-area-inset-left));
}
button,select,input{
  touch-action:manipulation;
}
button,select,input[type="number"]{
  min-height:44px;
}
select,input,button{
  max-width:100%;
}
.neck-wrap{
  -webkit-overflow-scrolling:touch;
  overscroll-behavior-x:contain;
  scrollbar-width:thin;
}
.fretboard-scroll-hint{
  display:none;
}

/* Tablettes et petits ordinateurs */
@media(max-width:1050px){
  .app{padding:20px}
  .controls{
    grid-template-columns:repeat(3,minmax(0,1fr));
  }
  .card-head{
    align-items:flex-start;
  }
  .selected-grid{
    grid-template-columns:repeat(auto-fill,minmax(165px,1fr));
  }
  svg{
    min-width:860px;
  }
}

/* Tablettes portrait / grands téléphones */
@media(max-width:820px){
  header{
    align-items:flex-start;
  }
  h1{
    font-size:clamp(1.65rem,7vw,2.25rem);
    line-height:1.08;
  }
  .subtitle{
    font-size:.92rem;
    line-height:1.45;
  }
  .controls{
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:10px;
    padding:13px;
  }
  .card,.selected-section,.progression-generator,.metronome-section{
    border-radius:16px;
  }
  .card-head{
    display:grid;
    grid-template-columns:1fr;
    padding:15px;
  }
  .chord-name{
    flex-wrap:wrap;
    gap:8px;
  }
  .chord-name strong{
    font-size:1.7rem;
  }
  .fingering{
    font-size:.8rem;
    overflow-wrap:anywhere;
  }
  .card-actions{
    width:100%;
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:9px;
  }
  .card-actions .legend{
    grid-column:1/-1;
  }
  .card-actions button{
    width:100%;
    justify-content:center;
  }
  .legend{
    gap:9px 12px;
    font-size:.78rem;
    line-height:1.35;
  }
  .neck-wrap{
    padding:12px 5px 6px;
  }
  svg{
    min-width:760px;
  }
  .info{
    grid-template-columns:1fr;
    padding:0 14px 14px;
  }
  .selected-section,.progression-generator,.metronome-section{
    padding:15px;
  }
  .selected-head{
    align-items:flex-start;
  }
  .selected-actions{
    width:100%;
    justify-content:space-between;
  }
  .selected-actions .progression-btn{
    flex:1 1 210px;
    justify-content:center;
  }
  .generator-controls{
    grid-template-columns:repeat(2,minmax(0,1fr));
  }
  .generator-actions{
    display:grid;
    grid-template-columns:1fr 1fr;
  }
  .generator-actions .generator-btn:first-child{
    grid-column:1/-1;
  }
  .metro-head{
    margin-bottom:12px;
  }
  .metro-status{
    width:100%;
  }
  .metro-main{
    grid-template-columns:1fr;
  }
  .metro-panel:last-child{
    grid-column:auto;
  }
}

/* Téléphones */
@media(max-width:600px){
  .app{
    padding:
      max(10px,env(safe-area-inset-top))
      max(10px,env(safe-area-inset-right))
      max(16px,env(safe-area-inset-bottom))
      max(10px,env(safe-area-inset-left));
  }
  header{
    display:grid;
    grid-template-columns:1fr;
    gap:12px;
    margin-bottom:14px;
  }
  .help-btn{
    width:100%;
    justify-content:center;
  }
  .controls{
    grid-template-columns:1fr;
    padding:11px;
    border-radius:14px;
  }
  label{
    font-size:.76rem;
  }
  select{
    padding:11px 10px;
  }
  .card{
    margin-top:12px;
  }
  .card-head{
    padding:12px;
    gap:12px;
  }
  .chord-name{
    display:grid;
    grid-template-columns:1fr;
  }
  .chord-name strong{
    font-size:1.55rem;
  }
  .fingering{
    width:100%;
    white-space:normal;
  }
  .card-actions{
    grid-template-columns:1fr;
  }
  .card-actions .legend{
    grid-column:auto;
  }
  .legend{
    display:grid;
    grid-template-columns:1fr 1fr;
    width:100%;
  }
  .key{
    align-items:flex-start;
  }
  .neck-wrap{
    position:relative;
    margin:0 -2px;
  }
  svg{
    min-width:650px;
  }
  .notes{
    font-size:.95rem;
    line-height:1.5;
    word-spacing:.15rem;
    overflow-wrap:anywhere;
  }
  .selected-section{
    margin-top:12px;
    padding:12px;
  }
  .selected-head{
    margin-bottom:10px;
  }
  .selected-actions{
    display:grid;
    grid-template-columns:1fr;
    gap:8px;
  }
  .selected-count{
    text-align:center;
  }
  .selected-grid{
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:9px;
  }
  .chord-diagram-card{
    padding:9px 6px;
    gap:6px;
  }
  .chord-diagram-title{
    font-size:.95rem;
    padding-right:24px;
    text-align:center;
  }
  .diagram-svg{
    width:100%;
    max-width:138px;
    height:auto;
    aspect-ratio:150/190;
  }
  .chord-diagram-frets,.finger-summary{
    font-size:.66rem;
    line-height:1.35;
    overflow-wrap:anywhere;
  }
  .remove-chord{
    width:30px;
    height:30px;
    top:5px;
    right:5px;
  }
  .next-chord-chip{
    min-height:38px;
    padding:7px 10px;
  }

  .progression-generator{
    margin-top:12px;
    padding:12px;
  }
  .generator-controls{
    grid-template-columns:1fr;
  }
  .generator-actions{
    grid-template-columns:1fr;
  }
  .generator-actions .generator-btn:first-child{
    grid-column:auto;
  }
  .generator-btn{
    width:100%;
  }
  .generator-preview{
    padding:10px;
  }
  .generator-chords{
    gap:5px;
  }
  .generator-chip{
    padding:6px 9px;
    font-size:.77rem;
  }
  .generator-arrow{
    font-size:.8rem;
  }

  .metronome-section{
    margin-top:12px;
    padding:12px;
  }
  .metro-head h2,.generator-head h2,.selected-head h2{
    font-size:1.08rem;
  }
  .metro-subtitle,.generator-subtitle{
    font-size:.78rem;
  }
  .metro-panel{
    padding:11px;
  }
  .metro-bpm-line{
    grid-template-columns:48px minmax(92px,1fr) 48px;
  }
  .metro-bpm{
    font-size:1.65rem;
  }
  .metro-actions{
    grid-template-columns:1fr;
  }
  .metro-grid-2,.metro-grid-3{
    grid-template-columns:1fr 1fr;
  }
  .metro-readout{
    grid-template-columns:repeat(3,1fr);
  }
  .metro-readout>div{
    padding:7px 4px;
  }
  .metro-readout strong{
    font-size:.92rem;
  }
  .accent-pattern{
    gap:5px;
  }
  .accent-beat{
    min-width:36px;
    height:36px;
  }

  .notice-overlay{
    padding:0;
    align-items:stretch;
  }
  .notice-dialog{
    width:100%;
    max-height:100dvh;
    height:100dvh;
    border-radius:0;
    border-left:0;
    border-right:0;
  }
  .notice-head{
    padding:
      max(12px,env(safe-area-inset-top))
      14px 12px;
  }
  .notice-body{
    padding:12px;
    padding-bottom:max(18px,env(safe-area-inset-bottom));
  }
  .notice-grid{
    gap:10px;
  }
  .notice-block{
    padding:11px;
  }
}

/* Très petits téléphones */
@media(max-width:380px){
  .selected-grid{
    grid-template-columns:1fr;
  }
  .diagram-svg{
    max-width:150px;
  }
  .legend{
    grid-template-columns:1fr;
  }
  .metro-grid-2,.metro-grid-3{
    grid-template-columns:1fr;
  }
  .metro-readout{
    grid-template-columns:1fr 1fr 1fr;
    font-size:.82rem;
  }
  svg{
    min-width:590px;
  }
}

/* Sur écran tactile, éviter les animations de survol inutiles */
@media(hover:none){
  .help-btn:hover,
  .play-btn:hover,
  .select-btn:hover:not(:disabled),
  .progression-btn:hover:not(:disabled),
  .generator-btn:hover,
  .metro-action:hover,
  .metro-small-btn:hover,
  .metro-preset:hover,
  .accent-beat:hover,
  .next-chord-chip:hover{
    transform:none;
    box-shadow:none;
  }
}

/* Interface modernisée */
body{background:radial-gradient(1000px 520px at 8% -12%,#185a632c,transparent 62%),radial-gradient(820px 480px at 96% 0,#4353aa22,transparent 62%),#0b0e14}
.app{max-width:1400px;padding:clamp(16px,3vw,42px)}
header{align-items:center;padding:18px 20px;margin-bottom:16px;border:1px solid #ffffff12;border-radius:22px;background:#151a23b8;box-shadow:0 18px 55px #0004;backdrop-filter:blur(18px)}
h1{font-size:clamp(1.55rem,3.1vw,2.45rem);font-weight:850}
.subtitle{font-size:.94rem;max-width:680px}
.help-btn{border-color:#ffffff1c;background:#ffffff0d;border-radius:999px;padding:9px 14px}
.controls{gap:10px;padding:12px;border:1px solid #ffffff13;border-radius:18px;background:#151a22cc;box-shadow:none}
.controls label,.generator-controls label{padding:9px;border:1px solid #ffffff0f;border-radius:12px;background:#0b0f16a8}
select{border-color:#ffffff16;background:#121821;border-radius:9px;padding:10px 11px}
.card,.selected-section,.progression-generator,.metronome-section{border-color:#ffffff13;background:linear-gradient(145deg,#171c26e8,#10141cd9);box-shadow:0 18px 48px #0004}
.card{border-radius:22px}.card-head{padding:18px 20px}.chord-name strong{font-size:2.2rem}
.fingering{border-color:#ffffff12;background:#090c12;color:#b9c5d3}
.select-btn,.play-btn,.generator-btn,.progression-btn,.metro-action{border-radius:10px}
.info-box,.generator-preview,.metro-panel,.metro-trainer-box{border-color:#ffffff12;background:#0c1018bd}
.notice-dialog{width:min(680px,94vw);border-color:#ffffff1d;border-radius:22px;background:linear-gradient(145deg,#171d28,#0b0f16)}
.notice-head{padding:16px 18px;background:#171d28e8;border-color:#ffffff10}.notice-head h2{font-size:1.2rem}
.notice-grid{display:none}
.notice-quick{display:grid;gap:10px}.notice-quick-item{padding:12px 13px;border:1px solid #ffffff12;border-radius:13px;background:#0c1119}.notice-quick-item strong{display:block;margin-bottom:4px;color:#9ffcf1;font-size:.91rem}.notice-quick-item p{margin:0;color:#bdc7d4;font-size:.87rem;line-height:1.45}
.notice-tip{margin-top:12px;border-color:#35bdb75c;background:#0e292b;color:#d9fffb}
@media(max-width:600px){header{padding:15px;border-radius:17px}.controls{border-radius:15px}.notice-dialog{border-radius:18px}.notice-quick-item{padding:11px}}

/* Direction artistique : studio futuriste */
:root{--neon:#63f3e4;--violet:#9d8cff;--electric:#46aaff;--glass:#101722b8;--glass-strong:#141d2bdd}
body{position:relative;isolation:isolate;background:radial-gradient(900px 600px at 9% -12%,#00d9bf24,transparent 62%),radial-gradient(800px 540px at 98% 3%,#7663ff29,transparent 62%),radial-gradient(760px 470px at 52% 108%,#168cff1d,transparent 65%),#070a10}
body::before{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.38;background:linear-gradient(#75fff508 1px,transparent 1px),linear-gradient(90deg,#75fff508 1px,transparent 1px);background-size:44px 44px;mask-image:linear-gradient(to bottom,#000,transparent 74%);animation:holoDrift 18s linear infinite}
body::after{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;background:linear-gradient(115deg,transparent 35%,#fff2 48%,transparent 61%);opacity:.12;transform:translateX(-125%);animation:holoSweep 9s ease-in-out infinite}
header{position:relative;overflow:hidden;border:1px solid #8ffffc2e;background:linear-gradient(120deg,#142331de,#0d1320de 54%,#241b49c9);box-shadow:0 22px 70px #0008,0 0 40px #1fffe214}
header::after{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(90deg,#5eead400, #b5fff940 48%,#8b7fff00);transform:translateX(-120%);animation:headerScan 6s ease-in-out infinite}
h1{position:relative;background:linear-gradient(100deg,#fff 10%,#93fff5 48%,#aaa1ff 95%);-webkit-background-clip:text;background-clip:text;color:transparent;text-shadow:none}
.subtitle{color:#b5c7d6}
.help-btn{position:relative;z-index:1;border-color:#91fff65e;background:linear-gradient(135deg,#1b424b,#24204c);box-shadow:inset 0 1px #ffffff26,0 0 20px #53eee52b}
.help-btn:hover{border-color:#a3fff9;box-shadow:0 0 0 3px #50f6e226,0 0 26px #50f6e23d;transform:translateY(-2px)}
.controls{position:relative;overflow:hidden;border-color:#91fff623;background:linear-gradient(145deg,#111a27dd,#0b111bcc);box-shadow:0 18px 48px #0006,inset 0 1px #ffffff0d}
.controls::before{content:"Réglages du manche";position:absolute;right:17px;top:9px;color:#78eae8a3;font-size:.62rem;font-weight:900;letter-spacing:.15em;text-transform:uppercase}
.controls label{position:relative;margin-top:10px;border-color:#ffffff14;background:#09111bad;transition:border-color .2s ease,transform .2s ease}
.controls label:focus-within{border-color:#6ff9ed83;box-shadow:0 0 0 3px #61f4e116;transform:translateY(-2px)}
select{appearance:none;border-color:#7feeea28;background:linear-gradient(135deg,#172432,#111722);box-shadow:inset 0 1px #ffffff0c}
.card,.selected-section,.progression-generator,.metronome-section{position:relative;overflow:hidden;border-color:#8ffffc20;background:linear-gradient(145deg,#121c2be8,#090e17e8);box-shadow:0 24px 70px #0008,inset 0 1px #ffffff0d}
.card::before,.selected-section::before,.progression-generator::before,.metronome-section::before{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(125deg,#5df8eb0e,transparent 36%,#947bff0c);border-top:1px solid #fff1}
.card-head{border-bottom-color:#8ffffc1d;background:#09101973}
.chord-name strong{color:#e9fffe;text-shadow:0 0 22px #5eead47a}.fingering{border-color:#79efe538;box-shadow:inset 0 0 14px #4cecdf0c}
.select-btn,.play-btn,.generator-btn,.progression-btn,.metro-action{position:relative;overflow:hidden;border-color:#74faec52;background:linear-gradient(135deg,#104e50,#173057);box-shadow:inset 0 1px #ffffff24,0 7px 18px #0005}
.select-btn::after,.play-btn::after,.generator-btn::after,.progression-btn::after,.metro-action::after{content:"";position:absolute;inset:0;background:linear-gradient(105deg,transparent 32%,#ffffff38 50%,transparent 68%);transform:translateX(-130%);transition:transform .45s ease}
.select-btn:hover::after,.play-btn:hover::after,.generator-btn:hover::after,.progression-btn:hover::after,.metro-action:hover::after{transform:translateX(130%)}
.select-btn:hover,.play-btn:hover,.generator-btn:hover,.progression-btn:hover,.metro-action:hover{border-color:#adfff9;box-shadow:0 0 0 3px #59f5e219,0 0 28px #58eee42c;transform:translateY(-2px)}
.info-box,.generator-preview,.metro-panel,.metro-trainer-box{border-color:#87fff11b;background:linear-gradient(145deg,#0d1520e8,#080d15e8);box-shadow:inset 0 1px #ffffff0a}
.info-title,.generator-preview-head,.metro-panel h3{color:#83eee7}
.selected-count{border-color:#86fff044;background:#0d2930;color:#b5fff8}
.notice-dialog{border-color:#8efff352;background:linear-gradient(145deg,#121d2c,#080d15);box-shadow:0 30px 100px #000c,0 0 55px #4fece729}
.notice-head{background:#121b29ee;border-color:#78fff629}.notice-close{border-color:#7dfcf652;background:#192536}.notice-close:hover{box-shadow:0 0 20px #fb718566}
footer{color:#8da4b4}
@keyframes holoDrift{to{background-position:44px 44px}}
@keyframes holoSweep{0%,25%{transform:translateX(-125%)}55%,100%{transform:translateX(125%)}}
@keyframes headerScan{0%,20%{transform:translateX(-120%)}50%,100%{transform:translateX(120%)}}
@media(max-width:600px){.controls::before{display:none}.controls label{margin-top:0}.card,.selected-section,.progression-generator,.metronome-section{box-shadow:0 15px 42px #0007}}
@media(prefers-reduced-motion:reduce){body::before,body::after,header::after{animation:none!important}}

/* Introduction animée */
body.intro-active{overflow:hidden}
.opening-screen{position:fixed;inset:0;z-index:10000;display:grid;place-items:center;overflow:hidden;background:radial-gradient(circle at 50% 45%,#173c45 0,#101a25 35%,#05070c 78%);color:#f1fffe;transition:opacity .7s ease,visibility .7s ease}
.opening-screen::before,.opening-screen::after{content:"";position:absolute;width:70vmax;height:70vmax;border:1px solid #5eead42e;border-radius:50%;animation:openingOrbit 4.2s linear infinite}
.opening-screen::after{width:46vmax;height:46vmax;border-color:#22d3ee38;animation-direction:reverse;animation-duration:3.1s}
.opening-screen.is-done{opacity:0;visibility:hidden;pointer-events:none}
.opening-noise{position:absolute;inset:0;opacity:.35;background:repeating-linear-gradient(110deg,transparent 0 18px,#5eead408 19px 20px);mask-image:radial-gradient(circle,#000,transparent 75%)}
.opening-content{position:relative;z-index:1;width:min(740px,90vw);text-align:center;animation:openingRise 1.25s cubic-bezier(.2,.8,.2,1) both}
.opening-eyebrow{margin:0 0 14px;color:#7ff7e8;font-size:.76rem;font-weight:900;letter-spacing:.34em;text-transform:uppercase}
.opening-title{margin:0;font-size:clamp(2.4rem,8vw,6.4rem);line-height:.9;letter-spacing:-.075em;text-shadow:0 0 30px #5eead47a,0 0 80px #22d3ee45}
.opening-title span{display:block;color:#9ffcf1;font-size:.38em;letter-spacing:.22em;margin-top:.55em;text-transform:uppercase}
.opening-fretboard{position:relative;margin:clamp(32px,8vh,70px) auto 0;width:min(660px,88vw);height:116px;border:1px solid #85fff669;border-radius:12px;background:linear-gradient(90deg,#07353c,#20535c 30%,#0b3b43 65%,#06282f);box-shadow:0 0 24px #5eead45c,inset 0 0 28px #0009;transform:perspective(500px) rotateX(54deg);overflow:hidden}
.opening-fretboard::before{content:"";position:absolute;inset:0;background:repeating-linear-gradient(90deg,transparent 0 8.25%,#b9fff899 8.45% 8.8%),repeating-linear-gradient(0deg,transparent 0 16.2%,#edfffecc 16.8% 18.3%)}
.opening-pulse{position:absolute;top:-20%;bottom:-20%;width:34px;border-radius:50%;background:#efffff;box-shadow:0 0 18px 8px #5eead4,0 0 60px 22px #22d3ee;animation:openingScan 1.8s cubic-bezier(.4,0,.2,1) infinite}
.opening-status{margin:22px 0 0;color:#b7d8da;font-size:.84rem;letter-spacing:.14em;text-transform:uppercase;animation:openingBlink 1s ease-in-out infinite}
@keyframes openingRise{from{opacity:0;transform:translateY(35px) scale(.9)}to{opacity:1;transform:none}}
@keyframes openingOrbit{to{transform:rotate(360deg) scale(1.08)}}
@keyframes openingScan{from{left:-8%;opacity:0}20%{opacity:1}80%{opacity:1}to{left:104%;opacity:0}}
@keyframes openingBlink{50%{opacity:.42}}
@media(prefers-reduced-motion:reduce){.opening-screen::before,.opening-screen::after,.opening-content,.opening-pulse,.opening-status{animation:none!important}.opening-screen{transition:opacity .25s ease,visibility .25s ease}}
/* Studio v006 : commandes latérales, manche au premier plan */
body{background:radial-gradient(ellipse at 80% 0,#18323b66,transparent 55%),#090d13}
body::before,body::after{display:none}
.app{display:grid;grid-template-columns:230px minmax(0,1fr);gap:20px;max-width:1600px;padding:24px;align-items:start}
.app>section,.app>footer{min-width:0;margin:0}
.language-bar{grid-column:1/-1;grid-row:1;display:flex;justify-content:flex-end;align-items:center;gap:10px;padding:0 2px}
.language-bar label{display:flex;align-items:center;gap:9px;color:#8fa6b9;font-size:.68rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase}
.language-bar select{width:auto;min-width:128px;min-height:38px;padding:7px 10px;background:#111923}
.app>.controls{grid-column:1;grid-row:2;display:grid;grid-template-columns:1fr;gap:18px;padding:24px 18px;border-radius:20px;background:#111923;overflow:visible}
.controls::before{display:none}
.controls label{margin:0;padding:0;border:0;background:none;color:#8fa6b9;font-size:.7rem;letter-spacing:.1em}
.controls label:focus-within{transform:none;box-shadow:none}
select{appearance:auto;min-height:46px;background:#1a2633;border:1px solid #344453;border-radius:10px;color:#eaf6ff}
.app>.card{grid-column:2;grid-row:2;border-radius:20px;background:#101820;box-shadow:0 20px 50px #0004}
.card::before,.selected-section::before,.progression-generator::before,.metronome-section::before{display:none}
.card-head{display:flex;align-items:flex-start;gap:20px;padding:24px;background:transparent}
.chord-name{display:flex;flex-direction:column;align-items:flex-start;gap:10px}
.chord-name strong{font-size:clamp(2.5rem,4vw,4rem);line-height:1.05;color:#adfff0;text-shadow:none}
.fingering{font-size:.76rem;background:transparent;border:0;padding:0;color:#96acbb}
.card-actions{display:flex;flex-wrap:wrap;flex:1;justify-content:flex-end;gap:8px}
.legend{width:100%;justify-content:flex-end;font-size:.72rem;color:#95a9b8;margin-top:8px}
.neck-wrap{padding:24px 8px 8px}
.info{padding:12px 24px 24px;gap:12px}
.info-box{border:0;border-radius:10px;background:#19242e}
.info-title{font-size:.66rem;letter-spacing:.12em;color:#8199ac}
.app>.selected-section,.app>.progression-generator,.app>.metronome-section,.app>footer{grid-column:1/-1}
.selected-section,.progression-generator,.metronome-section{padding:24px;border-radius:20px;background:#111923;box-shadow:none;border:1px solid #263441}
.selected-head h2,.generator-head h2,.metro-head h2{font-size:1.15rem;letter-spacing:-.02em}
.generator-subtitle,.metro-subtitle{max-width:760px;color:#91a6b7;font-size:.83rem}
.select-btn,.play-btn,.generator-btn,.progression-btn,.metro-action{background:#20323d;border-color:#38515c;box-shadow:none;font-weight:650}
#selectChord,#generateProgression{background:#a6f5df;color:#08251f;border-color:#a6f5df}
.select-btn::after,.play-btn::after,.generator-btn::after,.progression-btn::after,.metro-action::after{display:none}
button:focus-visible,select:focus-visible{outline:2px solid #b1ffee;outline-offset:4px}
.app>footer{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:8px 0;color:#8fa5b4;text-align:left}
.help-btn{width:auto;background:transparent;border:1px solid #344453;box-shadow:none;color:#c6dce8;font-size:.8rem;white-space:nowrap}
.module-guide{display:flex;align-items:flex-start;gap:10px;margin:0 0 16px;padding:11px 13px;border:1px solid #69f6e52e;border-radius:12px;background:linear-gradient(135deg,#10222a99,#0b141d99);color:#b9cbd4;font-size:.86rem;line-height:1.5}
.module-guide::before{content:"i";display:grid;place-items:center;flex:0 0 22px;height:22px;border:1px solid #7effef66;border-radius:50%;color:#8ff8ec;font-weight:900;font-size:.75rem}
.module-guide strong{color:#e8fffc}
.controls>.module-guide{grid-column:1/-1;margin:0}
.card>.module-guide{margin:14px 18px 0}
@media(max-width:1000px){.app{grid-template-columns:1fr;padding:16px;gap:16px}.app>.controls{grid-column:1;grid-row:auto;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;padding:18px}.app>.card{grid-column:1;grid-row:auto}.card-head{flex-wrap:wrap}.card-actions{justify-content:flex-start}.legend{justify-content:flex-start}}
@media(max-width:600px){.app{padding:12px;gap:12px}.language-bar{justify-content:stretch}.language-bar label,.language-bar select{width:100%}.app>.controls{grid-template-columns:repeat(2,minmax(0,1fr));padding:14px;gap:14px 10px}.controls label:last-child{grid-column:1/-1}.card-head{padding:18px}.card-actions{display:grid;grid-template-columns:1fr 1fr;width:100%;flex-basis:100%}.card-actions button{font-size:.75rem;padding:10px 8px}.card-actions .legend{grid-column:1/-1;display:flex}.view-toggle-btn{grid-column:1/-1}.info{padding:12px 16px 16px}.selected-section,.progression-generator,.metronome-section{padding:16px}.app>footer{flex-wrap:wrap}}