:root{
  --bg0:#070a14;
  --bg1:#0b1020;
  --bg2:#1b0f3a;
  --fg:#f2f6ff;
  --muted: rgba(242,246,255,.72);

  --card: rgba(255,255,255,.10);
  --card2: rgba(255,255,255,.14);
  --bd: rgba(255,255,255,.18);

  --shadow: 0 18px 50px rgba(0,0,0,.45);
  --shadow2: 0 10px 22px rgba(0,0,0,.28);

  --r: 18px;
  --r2: 26px;

  --gold: #ffd36a;
  --pink: #ff5bd6;
  --cyan: #39d7ff;
  --lime: #7dff6a;
  --vio: #8b7bff;

  --cardMin: 160px;
  --gap: 12px;

  /* >>> DOS DES CARTES (ton fichier) <<< */
  --dos-carte-url: url("./assets/dosCarte3.png");
}

*{ box-sizing: border-box; }
html,body{ height:100%; margin:0; background:var(--bg1); color:var(--fg);
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif; }
body{ overflow-x:hidden; }

/* ----- Décor animé ----- */
.bg{ position:fixed; inset:0; z-index:-2; overflow:hidden; background:
  radial-gradient(1200px 700px at 10% 15%, rgba(57,215,255,.18), transparent 65%),
  radial-gradient(900px 600px at 85% 30%, rgba(255,91,214,.16), transparent 60%),
  radial-gradient(1000px 700px at 50% 90%, rgba(125,255,106,.12), transparent 60%),
  linear-gradient(135deg, var(--bg1), var(--bg2));
}
.blob{
  position:absolute; width:520px; height:520px; border-radius:999px;
  filter: blur(35px) saturate(140%);
  opacity:.55;
  animation: floaty 9s ease-in-out infinite;
}
.b1{ left:-120px; top:-140px; background: radial-gradient(circle at 30% 30%, rgba(57,215,255,.85), rgba(139,123,255,.10) 65%, transparent 70%); }
.b2{ right:-160px; top:80px; background: radial-gradient(circle at 30% 30%, rgba(255,91,214,.85), rgba(255,211,106,.15) 60%, transparent 70%); animation-duration: 11s; }
.b3{ left:22%; bottom:-220px; background: radial-gradient(circle at 30% 30%, rgba(125,255,106,.75), rgba(57,215,255,.10) 65%, transparent 70%); animation-duration: 13s; }
@keyframes floaty{
  0%{ transform: translate(0,0) scale(1); }
  50%{ transform: translate(40px, -28px) scale(1.08); }
  100%{ transform: translate(0,0) scale(1); }
}
.grain{
  position:absolute; inset:0; z-index:-1;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='.25'/%3E%3C/svg%3E");
  opacity:.14;
  mix-blend-mode: overlay;
}

/* ----- Topbar ----- */
.topbar{
  display:flex; align-items:center; justify-content:space-between;
  padding: 12px 14px;
  gap: 12px;
}
.brand{ display:flex; align-items:center; gap:10px; }
.logo{
  width:44px; height:44px; border-radius:16px;
  display:grid; place-items:center;
  background: linear-gradient(135deg, rgba(255,211,106,.95), rgba(255,91,214,.85));
  box-shadow: var(--shadow2);
  transform: rotate(-3deg);
}
.title{ font-weight: 900; letter-spacing:.2px; font-size: 18px; }
.subtitle{ font-size: 12px; color: var(--muted); margin-top:1px; }

.controls{
  display:flex; align-items:center; gap:10px; flex-wrap:wrap; justify-content:flex-end;
}
.seg{
  display:flex; gap:0;
  border:1px solid var(--bd);
  border-radius: 999px;
  overflow:hidden;
  background: rgba(255,255,255,.06);
  box-shadow: var(--shadow2);
}
.segBtn{
  border:0; padding:10px 12px; color:var(--fg);
  background:transparent; cursor:pointer; font-weight:800;
  transition: .2s transform, .2s background;
}
.segBtn:hover{ transform: translateY(-1px); }
.segBtn.active{
  background: linear-gradient(135deg, rgba(57,215,255,.35), rgba(139,123,255,.25));
}

.btn{
  border:1px solid var(--bd);
  background: rgba(255,255,255,.08);
  color: var(--fg);
  padding: 10px 12px;
  border-radius: 999px;
  cursor:pointer;
  font-weight: 800;
  box-shadow: var(--shadow2);
  transition: .18s transform, .18s filter, .18s background;
}
.btn:hover{ transform: translateY(-1px); filter: brightness(1.06); }
.btn:active{ transform: translateY(0px) scale(.99); }
.btn.primary{
  border-color: transparent;
  background: linear-gradient(135deg, rgba(255,91,214,.85), rgba(57,215,255,.75));
}
.btn.gold{
  border-color: rgba(255,211,106,.55);
  background: linear-gradient(135deg, rgba(255,211,106,.35), rgba(255,91,214,.22));
}
.btn:disabled{ opacity:.45; cursor:not-allowed; transform:none; }

.switch{
  display:flex; align-items:center; gap:10px;
  background: rgba(255,255,255,.06);
  border:1px solid var(--bd);
  padding:8px 10px;
  border-radius:999px;
  box-shadow: var(--shadow2);
}
.switchLabel{ font-size: 12px; color: var(--muted); font-weight: 800; }
.switch input{ display:none; }
.slider{
  width: 44px; height: 24px; border-radius: 999px;
  background: rgba(255,255,255,.14);
  position:relative;
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.2);
}
.slider::after{
  content:"";
  width: 18px; height: 18px; border-radius:999px;
  position:absolute; top:3px; left:3px;
  background: rgba(255,255,255,.9);
  transition: .18s transform, .18s background;
}
.switch input:checked + .slider{ background: rgba(125,255,106,.22); }
.switch input:checked + .slider::after{
  transform: translateX(20px);
  background: rgba(255,211,106,.95);
}

/* ----- HUD ----- */
.hud{
  display:grid;
  grid-template-columns: repeat(6, minmax(120px, 1fr));
  gap:10px;
  padding: 0 14px 12px 14px;
}
.hudItem{
  background: rgba(255,255,255,.06);
  border:1px solid var(--bd);
  border-radius: 18px;
  padding: 10px 12px;
  box-shadow: var(--shadow2);
  overflow:hidden;
  position:relative;
}
.hudItem::before{
  content:"";
  position:absolute; inset:-2px;
  background: radial-gradient(260px 120px at 0% 0%, rgba(57,215,255,.10), transparent 60%);
  pointer-events:none;
}
.hudItem.accent::before{
  background: radial-gradient(260px 120px at 0% 0%, rgba(255,211,106,.14), transparent 60%),
              radial-gradient(260px 120px at 100% 0%, rgba(255,91,214,.10), transparent 60%);
}
.hudLabel{ font-size: 12px; color: var(--muted); font-weight: 900; }
.hudValue{ font-size: 18px; font-weight: 1000; letter-spacing:.2px; margin-top:2px; }

.main{ padding: 0 14px 18px 14px; }
.board{
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(var(--cardMin), 1fr));
  gap: var(--gap);
  align-items: stretch;
}

/* ==============================
   CARTES + VARIATIONS DOS
================================ */

/* Valeurs par défaut (seront écrasées aléatoirement par JS) */
.card{
  perspective: 1200px;
  position:relative;

  --back-rot: 0deg;
  --back-flipx: 1;
  --back-flipy: 1;
  --back-scale: 1.08;
  --back-posx: 50%;
  --back-posy: 50%;
  --back-hue: 0deg;
  --back-sat: 1.05;
  --back-contrast: 1.05;

  --s1x: 25%; --s1y: 30%; --s1r: 18%; --s1c: rgba(120,70,30,.18);
  --s2x: 70%; --s2y: 55%; --s2r: 14%; --s2c: rgba(90,50,20,.14);
  --s3x: 40%; --s3y: 78%; --s3r: 22%; --s3c: rgba(140,85,35,.15);
  --s4x: 60%; --s4y: 18%; --s4r: 12%; --s4c: rgba(110,60,25,.12);
}

.cardBtn{
  width:100%;
  border:0;
  padding:0;
  background: transparent;
  cursor:pointer;
  height: 100%;
}

.cardInner{
  position:relative;
  width:100%;
  height: 100%;
  min-height: 188px;
  transform-style: preserve-3d;
  transition: transform .55s cubic-bezier(.2,.8,.2,1);
}
.card.flipped .cardInner{ transform: rotateY(180deg); }

.face{
  position:absolute; inset:0;
  border-radius: var(--r2);
  backface-visibility: hidden;
  border:1px solid rgba(255,255,255,.18);
  box-shadow: var(--shadow);
  overflow:hidden;
}

/* ---- DOS : image + taches + symétries ---- */
.back{
  display:flex; align-items:center; justify-content:center;
  background: none;
}
.back::before{
  content:"";
  position:absolute;
  inset:-18%;
  background-image:
    var(--dos-carte-url),
    radial-gradient(circle at var(--s1x) var(--s1y), var(--s1c) 0, rgba(0,0,0,0) var(--s1r)),
    radial-gradient(circle at var(--s2x) var(--s2y), var(--s2c) 0, rgba(0,0,0,0) var(--s2r)),
    radial-gradient(circle at var(--s3x) var(--s3y), var(--s3c) 0, rgba(0,0,0,0) var(--s3r)),
    radial-gradient(circle at var(--s4x) var(--s4y), var(--s4c) 0, rgba(0,0,0,0) var(--s4r));
  background-size: cover, auto, auto, auto, auto;
  background-position: var(--back-posx) var(--back-posy), center, center, center, center;
  background-repeat: no-repeat;

  transform:
    rotate(var(--back-rot))
    scale(var(--back-scale))
    scaleX(var(--back-flipx))
    scaleY(var(--back-flipy));

  filter:
    hue-rotate(var(--back-hue))
    saturate(var(--back-sat))
    contrast(var(--back-contrast));

  opacity: .95;
  will-change: transform, filter;
}
.back::after{
  /* vignettage + micro-rayures (illusion “usé”) */
  content:"";
  position:absolute; inset:0;
  background:
    radial-gradient(280px 180px at 30% 30%, rgba(255,255,255,.08), transparent 60%),
    radial-gradient(420px 260px at 70% 70%, rgba(0,0,0,.16), transparent 65%),
    repeating-linear-gradient(12deg, rgba(0,0,0,.06) 0 1px, transparent 1px 6px);
  mix-blend-mode: multiply;
  opacity: .55;
  pointer-events:none;
}

.back .mark{
  position:relative;
  z-index:2;
  font-size: 30px;
  font-weight: 1000;
  opacity:.55;
  filter: drop-shadow(0 10px 14px rgba(0,0,0,.35));
  transform: rotate(-6deg);
}

.front{
  transform: rotateY(180deg);
  background:
    radial-gradient(260px 140px at 0% 0%, rgba(57,215,255,.16), transparent 60%),
    radial-gradient(260px 140px at 100% 0%, rgba(255,91,214,.16), transparent 60%),
    rgba(255,255,255,.08);
  padding: 10px;
  display:flex;
  flex-direction:column;
  gap:10px;
}

.cardHeader{
  display:flex; align-items:flex-start; justify-content:space-between; gap:10px;
}
.names{ display:flex; flex-direction:column; gap:2px; }
.nameEn{ font-size: 18px; font-weight: 1000; letter-spacing:.3px; }
.nameFr{ font-size: 13px; font-weight: 900; color: rgba(242,246,255,.85); }

/* double notation (SANS le mot "enharmonie") */
.altLine{
  font-size: 11px;
  color: var(--muted);
  font-weight: 900;
}

.badge{
  font-size: 11px;
  font-weight: 1000;
  padding: 6px 10px;
  border-radius: 999px;
  border:1px solid rgba(255,255,255,.18);
  background: rgba(0,0,0,.20);
  box-shadow: var(--shadow2);
  white-space:nowrap;
}
.badge.gold{
  border-color: rgba(255,211,106,.55);
  background: rgba(255,211,106,.10);
}

/* Portée : uniquement notes (si tu la gardes) */
.staffWrap{
  border:1px solid rgba(255,255,255,.14);
  background: rgba(0,0,0,.12);
  border-radius: 16px;
  padding: 6px 8px;
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.10);
}

/* Clavier (prioritaire et grand) */
.keyboard{
  position:relative;
  flex: 1;
  min-height: 140px;
  border-radius: 18px;
  background: rgba(0,0,0,.14);
  border:1px solid rgba(255,255,255,.14);
  overflow:hidden;
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.10);
}
.keysWhite{ display:flex; height:100%; position:relative; z-index:1; }
.whiteKey{
  flex:1;
  border-right: 1px solid rgba(0,0,0,.18);
  background: linear-gradient(180deg, rgba(255,255,255,.92), rgba(255,255,255,.75));
}
.whiteKey:last-child{ border-right:0; }
.whiteKey.active{
  background: linear-gradient(180deg, rgba(255,211,106,.98), rgba(255,91,214,.55));
  box-shadow: inset 0 0 0 2px rgba(255,255,255,.28);
}

.keysBlack{ position:absolute; inset:0; pointer-events:none; z-index:3; }
.blackKey{
  position:absolute;
  top:0;
  width: 7.2%;
  height: 62%;
  border-radius: 0 0 10px 10px;
  background: linear-gradient(180deg, rgba(16,18,24,.98), rgba(8,10,16,.92));
  box-shadow: 0 10px 18px rgba(0,0,0,.35);
  border: 1px solid rgba(255,255,255,.08);
}
.blackKey.active{
  background: linear-gradient(180deg, rgba(57,215,255,.95), rgba(139,123,255,.85));
  box-shadow: 0 10px 18px rgba(0,0,0,.35), inset 0 0 0 2px rgba(255,255,255,.22);
}

/* matched / feedback */
.card.matched .face{
  outline: 2px solid rgba(125,255,106,.55);
  box-shadow: 0 20px 70px rgba(125,255,106,.10), var(--shadow);
}
.card.wrong .face{
  animation: wobble .28s ease-in-out 1;
  outline: 2px solid rgba(255,91,214,.45);
}
@keyframes wobble{
  0%{ transform: translateX(0); }
  25%{ transform: translateX(-6px); }
  50%{ transform: translateX(6px); }
  75%{ transform: translateX(-4px); }
  100%{ transform: translateX(0); }
}

/* ----- Overlays / Modals (inchangé) ----- */
.overlayMsg{
  position: fixed;
  left: 50%;
  top: 14px;
  transform: translateX(-50%);
  z-index: 40;
  display:flex;
  flex-direction:column;
  gap:8px;
  pointer-events:none;
}
.toast{
  pointer-events:none;
  background: rgba(0,0,0,.40);
  border:1px solid rgba(255,255,255,.18);
  color: var(--fg);
  padding: 10px 12px;
  border-radius: 999px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
  font-weight: 1000;
  letter-spacing:.2px;
  display:flex; align-items:center; gap:10px;
  animation: pop .45s cubic-bezier(.2,.9,.2,1) 1;
}
.toast .pill{
  padding: 4px 10px;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(255,211,106,.45), rgba(57,215,255,.25));
  border:1px solid rgba(255,255,255,.18);
  font-size: 11px;
}
@keyframes pop{
  0%{ transform: translateY(-10px) scale(.96); opacity:0; }
  100%{ transform: translateY(0px) scale(1); opacity:1; }
}

.modal{
  position: fixed; inset:0;
  display:none;
  align-items:center;
  justify-content:center;
  background: rgba(0,0,0,.55);
  z-index: 60;
  padding: 14px;
}
.modal.show{ display:flex; }
.modalCard{
  width: min(520px, 100%);
  background: rgba(255,255,255,.10);
  border:1px solid rgba(255,255,255,.18);
  border-radius: 26px;
  box-shadow: var(--shadow);
  padding: 14px;
  backdrop-filter: blur(14px);
}
.modalCard.wide{ width: min(760px, 100%); }
.row{ display:flex; gap:10px; align-items:center; }
.row.wrap{ flex-wrap:wrap; }
.input{
  flex:1;
  border:1px solid rgba(255,255,255,.18);
  background: rgba(0,0,0,.25);
  color: var(--fg);
  padding: 12px 12px;
  border-radius: 16px;
  outline:none;
  font-weight: 900;
}
.input:focus{
  border-color: rgba(57,215,255,.55);
  box-shadow: 0 0 0 4px rgba(57,215,255,.12);
}
.finStats{
  display:grid;
  grid-template-columns: repeat(3, minmax(160px, 1fr));
  gap:10px;
  margin: 12px 0;
}
.statBox{
  background: rgba(0,0,0,.22);
  border:1px solid rgba(255,255,255,.16);
  border-radius: 18px;
  padding: 10px 12px;
}
.statBox .k{ font-size:12px; color: var(--muted); font-weight:900; }
.statBox .v{ font-size:20px; font-weight:1000; margin-top:3px; }

.overlayOrientation{
  position: fixed; inset:0;
  display:none;
  align-items:center; justify-content:center;
  background: rgba(0,0,0,.65);
  z-index: 80;
  padding:14px;
}
.overlayOrientation.show{ display:flex; }
.overlayCard{
  width:min(560px, 100%);
  border-radius: 26px;
  padding: 16px 16px;
  background: rgba(255,255,255,.10);
  border:1px solid rgba(255,255,255,.18);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
  text-align:center;
}
.rotateIcon{ font-size: 42px; margin-bottom:8px; }
.muted{ color: var(--muted); }
.tiny{ font-size:12px; }

/* ----- Responsive ----- */
@media (max-width: 980px){
  .hud{ grid-template-columns: repeat(3, minmax(120px, 1fr)); }
}
@media (max-width: 560px){
  .controls{ gap:8px; }
  .title{ font-size: 16px; }
  .hudValue{ font-size: 17px; }
  .keyboard{ min-height: 160px; }
}

/* Mode Accords : cartes plus compactes */
body.mode-accords{
  --cardMin: 132px;
  --gap: 10px;
}
body.mode-accords .nameEn{ font-size: 16px; }
body.mode-accords .front{ gap:8px; }
body.mode-accords .cardInner{ min-height: 176px; }
body.mode-accords .keyboard{ min-height: 170px; }

/* Réduction animations si demandé */
@media (prefers-reduced-motion: reduce){
  .blob, .toast{ animation: none !important; }
  .cardInner{ transition: none !important; }
}