/* ============================================================================
   MERGY — Passe Esthétique Premium HARMONISÉE CB-ARCADE
   Mobile-first, tokens cohérents avec le kit CB-ARCADE.
   Palette: identité merge preservée (bleu indigo + or premium),
   harmonisée avec le système design premium du kit.
   Glassmorphism, animations GPU-accélérées, WCAG AAA,
   RTL transparent (dir="rtl"), safe-areas iPhone, light/dark cohérent.
   ============================================================================ */

:root {
  /* ---- PALETTE PREMIUM (utiliser tokens CB-ARCADE) ---- */
  /* Fond & surfaces : cohérence système-wide */
  --bg:              var(--cb-neutral-1000, #0e1219);  /* Fond primaire */
  --bg-grad-light:   var(--cb-neutral-900, #1a2029);   /* Gradient top */
  --surface-0:       var(--cb-surface-0, #151d2a);     /* Surface claire */
  --surface-1:       var(--cb-surface-1, #0f131a);     /* Surface foncée */
  --panel:           var(--cb-surface-0, #151d2a);     /* Cartes/panneaux */
  --cell:            var(--cb-surface-2, #1a2332);     /* Cases grille */
  --line:            var(--cb-border-strong, rgba(255, 255, 255, 0.18)); /* Bordures */

  /* Texte : contrastes WCAG AAA */
  --ink:             var(--cb-text-primary, #f0f4fa);    /* Principal */
  --muted:           var(--cb-text-secondary, #9aa8bd);  /* Secondaire */
  --accent:          var(--cb-accent, #ffc107);          /* Or premium */
  --accent-ink:      var(--cb-text-on-accent, #0a0f22);  /* Texte sur or */
  --accent-dark:     var(--cb-accent-dark, #d4a500);     /* Or sombre */
  --warm:            var(--cb-warning, #ffb300);         /* Orange */

  /* Ombres premium (bokeh-like, profondeur accrue) */
  --shadow-xs:       var(--cb-shadow-xs, 0 2px 4px rgba(0, 0, 0, 0.14));
  --shadow-sm:       var(--cb-shadow-md, 0 8px 22px rgba(0, 0, 0, 0.38));
  --shadow-md:       var(--cb-shadow-lg, 0 16px 48px rgba(0, 0, 0, 0.48));
  --shadow-lg:       var(--cb-shadow-lg, 0 16px 48px rgba(0, 0, 0, 0.50));
  --shadow-xl:       var(--cb-shadow-xl, 0 20px 60px rgba(0, 0, 0, 0.58));
  --shadow-panel:    var(--cb-shadow-xl, 0 20px 60px rgba(0, 0, 0, 0.60));
  --shadow-inset:    var(--cb-shadow-inset, inset 0 1px 0 rgba(255, 255, 255, 0.10));

  /* Rayons (border-radius) — smooth premium */
  --radius-xs:       var(--cb-radius-xs, 4px);
  --radius-sm:       var(--cb-radius-sm, 8px);
  --radius-md:       var(--cb-radius-md, 12px);
  --radius-lg:       var(--cb-radius-lg, 16px);
  --radius-xl:       var(--cb-radius-xl, 20px);
  --radius-pill:     var(--cb-radius-full, 999px);

  /* Espacements (8px grid strict) */
  --gap-xs:          var(--cb-gap-xs, 4px);
  --gap-sm:          var(--cb-gap-sm, 6px);
  --gap-md:          var(--cb-gap-md, 8px);
  --gap-lg:          var(--cb-gap-lg, 12px);
  --gap-xl:          var(--cb-gap-xl, 16px);
  --pad-sm:          var(--cb-pad-xs, 6px);
  --pad-md:          var(--cb-pad-sm, 8px);
  --pad-lg:          var(--cb-pad-md, 12px);

  /* Typo (système harmonic scale) */
  --heading-xl:      var(--cb-heading-xl, 2rem);
  --heading-lg:      var(--cb-heading-lg, 1.5rem);
  --heading-md:      var(--cb-heading-md, 1.25rem);
  --heading-sm:      var(--cb-heading-sm, 1.125rem);
  --text-lg:         var(--cb-text-lg, 1rem);
  --text-base:       var(--cb-text-base, 0.9375rem);
  --text-sm:         var(--cb-text-sm, 0.875rem);
  --text-xs:         var(--cb-text-xs, 0.8125rem);
  --font-regular:    var(--cb-font-regular, 400);
  --font-semibold:   var(--cb-font-semibold, 600);
  --font-bold:       var(--cb-font-bold, 700);
  --font-black:      var(--cb-font-black, 800);
  --letter-spacing-normal: var(--cb-letter-spacing-normal, normal);
  --letter-spacing-label:  var(--cb-letter-spacing-label, 0.02em);
  --letter-spacing-caps:   var(--cb-letter-spacing-caps, 0.05em);
  --line-height-tight:  var(--cb-line-height-tight, 1.2);
  --line-height-normal: var(--cb-line-height-normal, 1.35);
  --line-height-relaxed: var(--cb-line-height-relaxed, 1.5);

  /* Transitions & animations (GPU-accélérées, sobres) */
  --dur-instant:     var(--cb-duration-instant, 0.08s);
  --dur-fast:        var(--cb-duration-fast, 0.12s);
  --dur-normal:      var(--cb-duration-normal, 0.18s);
  --dur-slow:        var(--cb-duration-slow, 0.3s);
  --dur-deliberate:  var(--cb-duration-deliberate, 0.4s);
  --ease-in-out:     var(--cb-easing-in-out, cubic-bezier(0.4, 0, 0.2, 1));
  --ease-bounce:     var(--cb-easing-bounce, cubic-bezier(0.2, 0.9, 0.3, 1.15));
  --ease-out:        var(--cb-easing-ease-out, cubic-bezier(0.16, 1, 0.3, 1));
  --ease-subtle:     cubic-bezier(0.45, 0, 0.55, 1);

  /* Glassmorphism (profondeur, verre dépoli premium — utiliser kit) */
  --glass-bg:        var(--cb-glass-bg, rgba(21, 29, 42, 0.90));
  --glass-bg-light:  var(--cb-glass-bg-light, rgba(33, 44, 62, 0.80));
  --glass-blur:      var(--cb-glass-blur, blur(14px) saturate(1.22));
  --overlay-bg:      var(--cb-overlay-bg, rgba(7, 10, 16, 0.75));
  --overlay-blur:    var(--cb-overlay-blur, blur(6px));

  /* States */
  --focus-ring:      2px solid rgba(212, 175, 55, 0.9);
  --focus-offset:    2px;
  --focus-shadow:    0 0 0 5px rgba(212, 175, 55, 0.18);
  --hover-bg:        rgba(255, 255, 255, 0.06);
  --active-scale:    0.94;
  --disabled-opacity: 0.5;

  /* Borders */
  --border-light:    rgba(255, 255, 255, 0.08);
  --border-medium:   rgba(255, 255, 255, 0.12);
  --border-strong:   rgba(255, 255, 255, 0.16);

  /* Glows premium (multi-layer, signature MERGY) */
  --glow-gold:       rgba(255, 215, 80, 0.15);
  --glow-gold-bright: rgba(255, 215, 80, 0.28);
  --glow-gold-intense: rgba(255, 215, 80, 0.42);

  color-scheme: dark;
}

/* ---- MODE CLAIR (Light Mode — tokens CB-ARCADE) ---- */
/* Suit le choix explicite du hub (data-theme posé par /_kit/theme.js),
   plutôt que l'OS seul (retour porteur 2026-09-10). */
html[data-theme="light"] {
    --bg:              var(--cb-neutral-50, #f8f9fb);    /* Fond très clair */
    --bg-grad-light:   var(--cb-neutral-100, #f0f3f7);   /* Gradient top */
    --surface-0:       var(--cb-neutral-0, #ffffff);     /* Surface blanche */
    --surface-1:       var(--cb-neutral-50, #f8f9fb);    /* Surface très claire */
    --panel:           var(--cb-neutral-0, #ffffff);     /* Cartes blanches */
    --cell:            var(--cb-neutral-200, #e5ebf3);   /* Cases légères */
    --line:            var(--cb-border-light, rgba(0, 0, 0, 0.1)); /* Bordures */

    --ink:             var(--cb-text-primary, #0d1828);   /* Texte très foncé */
    --muted:           var(--cb-text-secondary, #5a6e8a); /* Texte secondaire */
    --accent:          var(--cb-accent, #ffc107);         /* Or premium */
    --accent-ink:      var(--cb-text-on-accent, #0a0f22); /* Texte sur or */
    --accent-dark:     var(--cb-accent-dark, #d4a500);    /* Or sombre */
    --warm:            var(--cb-warning, #ffb300);        /* Orange */

    --shadow-xs:       0 2px 4px rgba(14, 18, 25, 0.08);
    --shadow-sm:       0 6px 16px rgba(80, 60, 150, 0.1);
    --shadow-md:       0 8px 22px rgba(80, 60, 150, 0.12);
    --shadow-lg:       0 14px 40px rgba(80, 60, 150, 0.12);
    --shadow-xl:       0 18px 44px rgba(80, 60, 150, 0.14);
    --shadow-panel:    0 18px 44px rgba(80, 60, 150, 0.14);

    --glass-bg:        rgba(248, 250, 254, 0.85);
    --glass-bg-light:  rgba(240, 243, 247, 0.75);
    --overlay-bg:      rgba(14, 18, 25, 0.35);

    /* Glows light mode (subtiles) */
    --glow-gold:       rgba(212, 175, 55, 0.12);
    --glow-gold-bright: rgba(212, 175, 55, 0.18);
    --glow-gold-intense: rgba(212, 175, 55, 0.28);

    color-scheme: light;
}

* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html, body {
  margin: 0;
  height: 100%;
  background: radial-gradient(1200px 600px at 50% -10%, var(--bg-grad-light) 0%, var(--bg) 60%);
  color: var(--ink);
  font-family: var(--cb-font-family, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif);
  font-size: 16px;
  font-weight: var(--font-regular);
  line-height: var(--line-height-normal);
  overscroll-behavior: none;
  touch-action: none;
  transition: background-color var(--dur-slow) var(--ease-subtle);
}

/* Respecter prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Support du contraste élevé */
@media (prefers-contrast: more) {
  :root {
    --border-light:    var(--cb-border-strong, rgba(255, 255, 255, 0.18));
    --border-medium:   rgba(255, 255, 255, 0.24);
    --border-strong:   rgba(255, 255, 255, 0.32);
  }
}

/* iPhone notch + home indicator safe-areas + Dynamic Island */
@supports (padding: max(0px)) {
  #wrap {
    padding-top: max(12px, env(safe-area-inset-top));
    padding-right: max(12px, env(safe-area-inset-right));
    padding-bottom: max(12px, env(safe-area-inset-bottom));
    padding-left: max(12px, env(safe-area-inset-left));
  }
}

#wrap {
  max-width: 520px;
  margin: 0 auto;
  padding: max(10px, env(safe-area-inset-top)) max(12px, env(safe-area-inset-right))
           max(12px, env(safe-area-inset-bottom)) max(12px, env(safe-area-inset-left));
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--gap-md);
  min-height: 100%;
}

/* ============================================================================
   HEADER & HUD
   ============================================================================ */

header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--pad-md) var(--gap-xs) 0;
  gap: var(--gap-md);
  backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--border-light);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  background: rgba(20, 26, 35, 0.4);
  animation: header-fade-in var(--dur-normal) var(--ease-out);
}

@keyframes header-fade-in {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

.brand {
  font-weight: var(--font-black);
  letter-spacing: var(--letter-spacing-label);
  font-size: 22px;
  line-height: var(--line-height-tight);
  transition: transform var(--dur-fast) var(--ease-out);
  will-change: text-shadow, transform, filter;
  animation: brand-pulse 3.2s ease-in-out infinite;
}

.brand:active { transform: scale(0.96); }

.brand b {
  color: var(--accent);
  text-shadow: 0 0 12px rgba(255, 215, 80, 0.3);
}

.scores {
  display: flex;
  gap: var(--gap-lg);
  align-items: center;
}

.score {
  text-align: end;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: var(--pad-sm);
  border-radius: var(--radius-md);
  background: var(--glass-bg);
  border: 1px solid var(--border-light);
  backdrop-filter: var(--glass-blur);
  transition: all var(--dur-normal) var(--ease-out);
  will-change: box-shadow, background, border-color, transform;
}

@media (hover: hover) and (pointer: fine) {
  .score:hover {
    background: var(--glass-bg-light);
    border-color: var(--border-medium);
    box-shadow: var(--shadow-sm), 0 0 16px rgba(255, 215, 80, 0.22), 0 0 32px rgba(255, 215, 80, 0.12);
    transform: translateY(-2px);
    animation: glow-cascade 0.6s ease-in-out;
  }
}

.score .lbl {
  font-size: 10px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-label);
  font-weight: var(--font-semibold);
  opacity: 0.8;
}

.score .val {
  font-size: 22px;
  font-weight: var(--font-black);
  font-variant-numeric: tabular-nums;
  line-height: var(--line-height-tight);
  color: var(--accent);
  text-shadow: 0 0 8px rgba(255, 215, 80, 0.25), 0 0 16px rgba(255, 215, 80, 0.15);
  animation: value-glow 2.8s ease-in-out infinite;
  will-change: text-shadow, filter;
}

/* ============================================================================
   BOARD & CANVAS
   ============================================================================ */

.board-wrap {
  /* Habillage du TABLEAU courant (variété + progression, src/levels-config.js) :
     posé en JS via style.setProperty sur cet élément — repli neutre sinon. */
  --theme-a: #0e1219;
  --theme-b: #1a2029;
  --theme-glow: 255, 193, 7;
  position: relative;
  width: 100%;
  padding: 9px;
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, var(--theme-a), var(--theme-b));
  border: 1px solid var(--border-medium);
  box-shadow: var(--shadow-lg),
              var(--shadow-inset),
              0 0 24px rgba(var(--theme-glow), 0.10);
  backdrop-filter: var(--glass-blur);
  margin-block: 0 auto;
  max-width: min(100%, calc((100vh - 188px) * 0.732 + 18px));
  max-width: min(100%, calc((100dvh - 188px) * 0.732 + 18px));
  animation: board-rise var(--dur-normal) var(--ease-bounce);
  transition: box-shadow var(--dur-slow) var(--ease-subtle), background var(--dur-deliberate) var(--ease-subtle);
  will-change: box-shadow, transform, border-color, background;
}

.level-badge {
  position: absolute;
  top: -11px;
  left: 14px;
  z-index: 1;
  font-size: 10px;
  font-weight: var(--font-black);
  letter-spacing: var(--letter-spacing-caps);
  text-transform: uppercase;
  color: var(--accent-ink);
  background: var(--accent);
  border-radius: var(--radius-pill);
  padding: 3px 10px;
  box-shadow: 0 2px 8px rgba(var(--theme-glow), 0.35);
}

[dir=rtl] .level-badge { left: auto; right: 14px; }

@keyframes board-rise {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

html[data-theme="light"] .board-wrap {
  background: linear-gradient(160deg, #e8f0ff, #d9e5ff);
  border-color: var(--border-light);
  box-shadow: var(--shadow-md),
              inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

@media (hover: hover) and (pointer: fine) {
  .board-wrap:hover {
    box-shadow: var(--shadow-xl),
                var(--shadow-inset),
                0 0 32px rgba(255, 215, 80, 0.12);
    border-color: var(--border-strong);
  }
}

canvas {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-md);
  touch-action: none;
  background: radial-gradient(circle at 30% 30%,
    rgba(24, 42, 63, 0.4),
    rgba(10, 18, 25, 0.6));
  box-shadow: inset 0 1px 4px rgba(0, 0, 0, 0.3),
              0 10px 26px rgba(0, 0, 0, 0.4);
  transition: filter var(--dur-normal) var(--ease-out);
}

html[data-theme="light"] canvas {
  background: radial-gradient(circle at 30% 30%,
    rgba(200, 220, 245, 0.3),
    rgba(232, 240, 255, 0.6));
  box-shadow: inset 0 1px 4px rgba(10, 30, 80, 0.08),
              0 10px 26px rgba(10, 30, 80, 0.1);
}

/* ============================================================================
   FOOTER & FLASH
   ============================================================================ */

footer {
  color: var(--muted);
  font-size: 12px;
  text-align: center;
  padding-bottom: 6px;
  min-height: 16px;
  opacity: 0.8;
  transition: opacity var(--dur-normal) var(--ease-subtle);
}

footer:hover { opacity: 1; }

/* ============================================================================
   HUD — Score chips & controls
   ============================================================================ */

.hud {
  width: 100%;
  display: flex;
  gap: var(--gap-md);
  align-items: center;
  padding: 0 var(--gap-xs);
  flex-wrap: wrap;
  animation: hud-slide-up var(--dur-normal) var(--ease-bounce);
  will-change: opacity, transform;
}

@keyframes hud-slide-up {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Icônes SVG trait fin partagées (charte galaxie SANTVIA, zéro emoji) */
.ico-svg { display: inline-flex; vertical-align: -0.15em; line-height: 1; }
.ico-svg svg { width: 14px; height: 14px; }

/* Porte-monnaie mutualisé (2 soldes CB-Arcade : Jouer, icône SVG + Gagner ◆) */
.wallet-hud { display: flex; gap: 6px; align-items: center; margin-left: auto; }
.wchip {
  display: flex; align-items: center; gap: 4px;
  font-size: 13px; font-weight: var(--font-bold);
  color: var(--text-primary, #fff);
  background: var(--glass-bg); border: 1px solid var(--border-light);
  border-radius: var(--radius-pill); padding: var(--pad-xs) 10px; white-space: nowrap;
}
.wchip .ic { font-size: 14px; line-height: 1; }
.wchip.earn { color: #e9c46a; border-color: rgba(233,196,106,.35); background: rgba(233,196,106,.08); }

/* Vies : rouge quand vides, pour signaler le blocage d'un coup d'œil. */
.lives-chip { font-size: 15px; }
.lives-chip b { font-variant-numeric: tabular-nums; }
.lives-chip.empty {
  border-color: rgba(255, 90, 90, 0.56);
  color: #ff8a8a;
  animation: lives-empty-pulse 1.6s ease-in-out infinite;
}
.lives-chip.empty b { color: #ff8a8a; }

@keyframes lives-empty-pulse {
  0%, 100% { box-shadow: var(--shadow-xs), 0 0 8px rgba(255, 90, 90, 0.10); }
  50% { box-shadow: var(--shadow-sm), 0 0 16px rgba(255, 90, 90, 0.30); }
}

.chip {
  background: var(--glass-bg);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-pill);
  padding: var(--pad-xs) 12px;
  font-size: 13px;
  font-weight: var(--font-bold);
  display: flex;
  align-items: center;
  gap: 6px;
  font-variant-numeric: tabular-nums;
  backdrop-filter: var(--glass-blur);
  transition: all var(--dur-normal) var(--ease-out);
  box-shadow: var(--shadow-xs), 0 0 8px rgba(255, 215, 80, 0.05);
  will-change: box-shadow, transform, background, border-color;
}

.chip:active { transform: scale(0.94); }

@media (hover: hover) and (pointer: fine) {
  .chip:hover {
    background: var(--glass-bg-light);
    border-color: var(--border-medium);
    box-shadow: var(--shadow-sm), 0 0 16px rgba(255, 215, 80, 0.15), 0 0 32px rgba(255, 215, 80, 0.08);
    transform: translateY(-2px);
  }
}

.chip.pulse {
  animation: chip-pop 0.35s var(--ease-bounce);
}

@keyframes chip-pop {
  0%, 100% { transform: scale(1); }
  45% { transform: scale(1.18); }
}

.chip-btn {
  font-family: inherit;
  width: auto;
  margin: 0 0 0 auto;
  padding: var(--pad-xs) 12px;
  font-size: 15px;
  background: var(--glass-bg);
  color: var(--ink);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  cursor: pointer;
  backdrop-filter: var(--glass-blur);
  box-shadow: var(--shadow-xs), 0 0 8px rgba(255, 215, 80, 0.05);
  transition: all var(--dur-fast) var(--ease-out);
  font-weight: var(--font-semibold);
  will-change: box-shadow, transform, background, border-color, filter;
}

.chip-btn:active:not(:disabled) {
  transform: scale(0.94);
}

.chip-btn:disabled {
  opacity: var(--disabled-opacity);
  cursor: not-allowed;
}

@media (hover: hover) and (pointer: fine) {
  .chip-btn:not(:disabled):hover {
    background: var(--glass-bg-light);
    border-color: var(--border-medium);
    box-shadow: var(--shadow-sm), 0 0 16px rgba(255, 215, 80, 0.22), 0 0 32px rgba(255, 215, 80, 0.10);
    filter: brightness(1.08);
    transform: translateY(-2px);
    animation: glow-cascade 0.5s ease-in-out;
  }
}

/* ============================================================================
   CHALLENGE BAR — bandeau du mode Défis (remplace le HUD pendant un niveau)
   ============================================================================ */

.challenge-bar {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--gap-md);
  padding: var(--pad-md) var(--gap-lg);
  border-radius: var(--radius-md);
  background: var(--glass-bg);
  border: 1px solid var(--border-light);
  backdrop-filter: var(--glass-blur);
  animation: hud-slide-up var(--dur-normal) var(--ease-bounce);
}

.cb-info {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  min-width: 0;
}

.cb-level {
  font-weight: var(--font-black);
  font-size: 14px;
  color: var(--ink);
  white-space: nowrap;
}

.cb-chip {
  font-size: 12px;
  font-weight: var(--font-semibold);
  color: var(--accent);
  background: rgba(255, 215, 80, 0.1);
  border: 1px solid rgba(255, 215, 80, 0.22);
  border-radius: var(--radius-pill);
  padding: 3px 10px;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

#btn-challenge-quit { margin: 0; width: auto; padding: var(--pad-xs) 12px; font-size: 13px; }

/* ============================================================================
   LEVEL LIST — sélection des Défis
   ============================================================================ */

#challenge-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-align: left;
  max-height: 52vh;
  overflow-y: auto;
  margin: 6px 0;
}

.level-row {
  display: flex;
  align-items: center;
  gap: var(--gap-md);
  padding: 10px 12px;
  border-radius: var(--radius-md);
  background: var(--glass-bg);
  border: 1px solid var(--border-light);
  transition: all var(--dur-fast) var(--ease-out);
}

.level-row.done {
  border-color: rgba(255, 215, 80, 0.35);
  background: rgba(255, 215, 80, 0.07);
}

.level-row.locked { opacity: 0.55; }

.level-row .lv-num {
  width: 30px; height: 30px;
  border-radius: var(--radius-pill);
  display: flex; align-items: center; justify-content: center;
  font-weight: var(--font-black);
  font-size: 13px;
  background: var(--surface-1);
  border: 1px solid var(--border-light);
  flex: none;
}

.level-row.done .lv-num {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
}

.level-row .lv-info { flex: 1; min-width: 0; }

.level-row .lv-tier {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-label);
  color: var(--muted);
  font-weight: var(--font-semibold);
  opacity: 0.85;
}

.level-row .lv-meta {
  font-size: 12px;
  color: var(--muted);
  margin-top: 1px;
}

.level-row .lv-target {
  flex: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

.level-row .lv-tile {
  min-width: 40px;
  height: 30px;
  padding: 0 8px;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-weight: var(--font-black);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  box-shadow: var(--shadow-xs);
}

.level-row .lv-icon {
  width: 18px; height: 18px;
  color: var(--muted);
  flex: none;
}

.level-row.done .lv-icon { color: var(--accent); }

.level-row button.lv-play {
  width: auto;
  margin: 0;
  padding: 8px 14px;
  font-size: 13px;
}

[dir=rtl] .level-row { text-align: right; }
[dir=rtl] .challenge-bar { flex-direction: row-reverse; }

/* ============================================================================
   FLASH — transient messages
   ============================================================================ */

.flash {
  height: 20px;
  font-weight: var(--font-black);
  color: var(--accent);
  font-size: 15px;
  letter-spacing: var(--letter-spacing-label);
  opacity: 0;
  transition: opacity var(--dur-fast) var(--ease-subtle);
  text-shadow: 0 0 8px rgba(255, 215, 80, 0.3);
  will-change: opacity, transform, text-shadow;
}

.flash.show {
  opacity: 1;
  animation: flash-fade 2.2s var(--ease-subtle) forwards;
}

@keyframes flash-fade {
  0% { opacity: 1; transform: scale(1) translateY(0); }
  50% { opacity: 1; }
  100% { opacity: 0; transform: scale(0.95) translateY(-4px); }
}

/* ============================================================================
   ACTIONS — New game / Undo buttons
   ============================================================================ */

.actions {
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap-md);
  align-items: stretch;
  padding: 0 var(--gap-xs);
  animation: actions-slide-up var(--dur-normal) var(--ease-bounce) 0.05s both;
}

@keyframes actions-slide-up {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.actions button {
  flex: 1;
  margin: 0;
  padding: 11px 10px;
  font-size: 14px;
  transition: all var(--dur-fast) var(--ease-out);
  border: 1px solid var(--border-light);
  backdrop-filter: var(--glass-blur);
  will-change: box-shadow, background, border-color, transform;
}

.actions button:active:not(:disabled) {
  transform: scale(0.94);
}

.actions button:disabled {
  opacity: var(--disabled-opacity);
  cursor: not-allowed;
}

.actions .btn-rewarded small {
  font-size: 10px;
  display: block;
  opacity: 0.85;
  font-weight: var(--font-semibold);
}

.actions .wide {
  flex-basis: 100%;
}

[hidden] {
  display: none !important;
}

/* ============================================================================
   OVERLAYS — Modals and dialogs
   ============================================================================ */

.overlay {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  background: var(--overlay-bg);
  backdrop-filter: var(--overlay-blur);
  z-index: 5;
  padding: max(12px, env(safe-area-inset-top)) max(12px, env(safe-area-inset-right))
           max(12px, env(safe-area-inset-bottom)) max(12px, env(safe-area-inset-left));
}

html[data-theme="light"] .overlay {
  background: rgba(20, 50, 80, 0.42);
  backdrop-filter: blur(5px);
}

.overlay.show {
  display: flex;
  animation: overlay-fade-in var(--dur-normal) var(--ease-out);
  will-change: opacity;
}

@keyframes overlay-fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* ============================================================================
   CARDS — Modal content
   ============================================================================ */

.overlay .card {
  background: var(--panel);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  padding: 26px 22px;
  width: min(360px, 88vw);
  max-height: 92vh;
  overflow-y: auto;
  text-align: center;
  box-shadow: var(--shadow-panel), 0 0 32px rgba(255, 215, 80, 0.10);
  color: var(--ink);
  display: block;
  animation: card-rise 0.22s var(--ease-bounce);
  backdrop-filter: var(--glass-blur);
  background: rgba(26, 29, 45, 0.96);
  will-change: transform, opacity, box-shadow;
}

html[data-theme="light"] .overlay .card {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-lg);
}

@keyframes card-rise {
  from {
    opacity: 0;
    transform: translateY(10px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.overlay h2 {
  margin: 0 0 4px;
  font-size: 25px;
  font-weight: var(--font-black);
  letter-spacing: -0.5px;
  color: var(--ink);
}

.overlay .big {
  font-size: 52px;
  font-weight: 900;
  color: var(--accent);
  margin: 6px 0 2px;
  font-variant-numeric: tabular-nums;
  text-shadow: 0 0 16px rgba(255, 215, 80, 0.25);
  animation: value-glow 3s ease-in-out infinite;
  will-change: text-shadow;
}

.overlay .sub {
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 16px;
  line-height: var(--line-height-relaxed);
}

/* ============================================================================
   BUTTONS — All button styles
   ============================================================================ */

button {
  border: 0;
  border-radius: var(--radius-md);
  padding: 13px 16px;
  font-size: 16px;
  font-weight: var(--font-black);
  width: 100%;
  cursor: pointer;
  margin-top: var(--gap-sm);
  font-family: inherit;
  transition: all var(--dur-fast) var(--ease-out);
  line-height: var(--line-height-tight);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

button:active:not(:disabled) {
  transform: scale(var(--active-scale));
}

button:disabled {
  opacity: var(--disabled-opacity);
  cursor: not-allowed;
}

button:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-offset);
  box-shadow: var(--focus-shadow);
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
  box-shadow: var(--shadow-md), 0 0 16px rgba(255, 215, 80, 0.28), 0 0 32px rgba(255, 215, 80, 0.12);
  font-weight: var(--font-black);
  will-change: box-shadow, filter, transform, text-shadow;
}

@media (hover: hover) and (pointer: fine) {
  .btn-primary:not(:disabled):hover {
    filter: brightness(1.10) drop-shadow(0 0 12px rgba(255, 215, 80, 0.3));
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl), 0 0 24px rgba(255, 215, 80, 0.40), 0 0 48px rgba(255, 215, 80, 0.18);
  }
}

.btn-primary:active:not(:disabled) {
  transform: scale(0.93) translateY(2px);
}

.btn-ghost {
  background: var(--glass-bg);
  color: var(--ink);
  border: 1px solid var(--border-light);
  backdrop-filter: var(--glass-blur);
  box-shadow: var(--shadow-sm), 0 0 8px rgba(255, 215, 80, 0.06);
  will-change: box-shadow, background, border-color, transform, filter;
}

@media (hover: hover) and (pointer: fine) {
  .btn-ghost:not(:disabled):hover {
    background: var(--glass-bg-light);
    border-color: var(--border-medium);
    box-shadow: var(--shadow-md), 0 0 16px rgba(255, 215, 80, 0.20), 0 0 32px rgba(255, 215, 80, 0.10);
    filter: brightness(1.05);
    transform: translateY(-2px);
    animation: glow-cascade 0.6s ease-in-out;
  }
}

.btn-rewarded {
  background: linear-gradient(90deg, #5b8cff, #8b5bff);
  color: #fff;
  box-shadow: var(--shadow-md), 0 0 16px rgba(91, 140, 255, 0.35), 0 0 32px rgba(91, 140, 255, 0.15);
  position: relative;
  overflow: hidden;
  will-change: box-shadow, filter, transform, background;
}

.btn-rewarded::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg,
    rgba(255, 255, 255, 0),
    rgba(255, 255, 255, 0.15),
    rgba(255, 255, 255, 0));
  transform: translateX(-100%);
  transition: transform var(--dur-normal) var(--ease-out);
}

@media (hover: hover) and (pointer: fine) {
  .btn-rewarded:not(:disabled):hover {
    filter: brightness(1.10) drop-shadow(0 0 12px rgba(91, 140, 255, 0.4));
    box-shadow: var(--shadow-lg), 0 0 24px rgba(91, 140, 255, 0.50), 0 0 48px rgba(91, 140, 255, 0.20);
    transform: translateY(-2px);
  }

  .btn-rewarded:not(:disabled):hover::before {
    transform: translateX(100%);
  }
}

.btn-rewarded small {
  display: block;
  font-weight: var(--font-semibold);
  opacity: 0.85;
  font-size: 11px;
}

/* ============================================================================
   HOME SCREEN
   ============================================================================ */

.overlay .card.home {
  padding: 22px 20px 18px;
  max-height: 90vh;
}

.logo {
  font-weight: var(--font-black);
  letter-spacing: var(--letter-spacing-caps);
  font-size: 38px;
  line-height: var(--line-height-tight);
  margin-bottom: 8px;
  animation: logo-bounce 0.6s var(--ease-bounce);
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  will-change: text-shadow, transform;
}

@keyframes logo-bounce {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.logo b {
  color: var(--accent);
  text-shadow: 0 0 12px rgba(255, 215, 80, 0.4);
}

.card.home .sub {
  margin-bottom: 14px;
  font-size: var(--text-sm);
}

.stats {
  display: flex;
  gap: var(--gap-md);
  margin-bottom: 6px;
  animation: stats-fade-in 0.4s var(--ease-out) 0.1s both;
}

@keyframes stats-fade-in {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.stat {
  flex: 1;
  background: var(--glass-bg);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: var(--pad-sm);
  backdrop-filter: var(--glass-blur);
  transition: all var(--dur-normal) var(--ease-out);
  box-shadow: var(--shadow-xs), 0 0 8px rgba(255, 215, 80, 0.06);
  will-change: box-shadow, background, border-color, transform, filter;
}

@media (hover: hover) and (pointer: fine) {
  .stat:hover {
    background: var(--glass-bg-light);
    border-color: var(--border-medium);
    box-shadow: var(--shadow-sm), 0 0 16px rgba(255, 215, 80, 0.16), 0 0 32px rgba(255, 215, 80, 0.08);
    transform: translateY(-3px);
    filter: brightness(1.04);
  }
}

.stat .lbl {
  font-size: 9px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-label);
  font-weight: var(--font-semibold);
  opacity: 0.8;
}

.stat .val {
  font-size: 20px;
  font-weight: var(--font-black);
  font-variant-numeric: tabular-nums;
  line-height: var(--line-height-tight);
  color: var(--accent);
  text-shadow: 0 0 8px rgba(255, 215, 80, 0.2);
}

/* ============================================================================
   MODES — Board selector (variety + progression, src/modes.js)
   ============================================================================ */

.modes {
  display: flex;
  gap: var(--gap-sm);
  margin-bottom: 14px;
}

.mode-chip {
  flex: 1;
  width: auto;
  margin: 0;
  padding: 10px 6px;
  background: var(--glass-bg);
  color: var(--ink);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  cursor: pointer;
  backdrop-filter: var(--glass-blur);
  transition: all var(--dur-fast) var(--ease-out);
  box-shadow: var(--shadow-xs);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  will-change: box-shadow, background, border-color, transform;
}

.mode-chip b {
  font-size: 13px;
  font-weight: var(--font-black);
}

.mode-chip small {
  font-size: 10px;
  color: var(--muted);
  font-weight: var(--font-semibold);
  opacity: 0.8;
}

.mode-chip small.lock {
  display: block;
  color: var(--muted);
  opacity: 0.9;
  font-size: 9px;
  line-height: 1.3;
}

.mode-chip.on {
  border-color: var(--accent);
  background: rgba(255, 215, 80, 0.12);
  box-shadow: var(--shadow-sm), 0 0 12px rgba(255, 215, 80, 0.20);
}

.mode-chip.on b { color: var(--accent); }

.mode-chip.locked {
  cursor: not-allowed;
  opacity: 0.55;
}

@media (hover: hover) and (pointer: fine) {
  .mode-chip:not(.locked):not(.on):hover {
    background: var(--glass-bg-light);
    border-color: var(--border-medium);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm), 0 0 12px rgba(255, 215, 80, 0.14);
  }
}

.mode-chip:active:not(.locked) { transform: scale(0.96); }

/* ============================================================================
   FORMS — Input fields, labels, rows
   ============================================================================ */

.field {
  display: block;
  text-align: left;
  margin: 10px 0;
}

.field-lbl {
  display: block;
  font-size: 11px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-label);
  margin-bottom: 5px;
  font-weight: var(--font-semibold);
  opacity: 0.8;
}

input, select {
  width: 100%;
  background: var(--glass-bg);
  color: var(--ink);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 12px;
  font-size: 15px;
  font-family: inherit;
  backdrop-filter: var(--glass-blur);
  transition: all var(--dur-normal) var(--ease-out);
  box-shadow: var(--shadow-xs);
  font-weight: var(--font-regular);
  will-change: border-color, box-shadow, background;
}

input:hover, select:hover {
  border-color: var(--border-medium);
}

input:focus, select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: var(--shadow-sm), 0 0 0 3px rgba(255, 215, 80, 0.12), 0 0 16px rgba(255, 215, 80, 0.25), 0 0 32px rgba(255, 215, 80, 0.12);
  animation: glow-cascade 0.5s ease-in-out;
  will-change: box-shadow, border-color;
}

input::placeholder {
  color: var(--muted);
  opacity: 0.6;
}

.row {
  display: flex;
  gap: var(--gap-md);
  margin: 8px 0;
  align-items: stretch;
}

.row input {
  flex: 1;
}

.row button {
  width: auto;
  margin: 0;
  white-space: nowrap;
  padding: 12px 14px;
  font-size: 14px;
}

/* ============================================================================
   FRIENDS & LEADERBOARD
   ============================================================================ */

.board-title {
  margin: 18px 0 6px;
  font-size: 11px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-label);
  text-align: left;
  font-weight: var(--font-semibold);
  opacity: 0.8;
}

.groups {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.group {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--glass-bg);
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  padding: 8px 10px;
  text-align: left;
  backdrop-filter: var(--glass-blur);
  transition: all var(--dur-normal) var(--ease-out);
  box-shadow: var(--shadow-xs);
  will-change: box-shadow, background, border-color;
}

.group.on {
  border-color: var(--accent);
  background: rgba(255, 215, 80, 0.1);
  box-shadow: var(--shadow-sm), 0 0 8px rgba(255, 215, 80, 0.15);
}

@media (hover: hover) and (pointer: fine) {
  .group:hover {
    background: var(--glass-bg-light);
    border-color: var(--border-medium);
  }
}

.group .nm {
  flex: 1;
  font-size: 14px;
  font-weight: var(--font-black);
}

.group .code {
  font-size: 12px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  letter-spacing: var(--letter-spacing-label);
  opacity: 0.7;
}

.group button {
  width: auto;
  margin: 0;
  padding: 6px 9px;
  font-size: 12px;
  border-radius: var(--radius-sm);
  background: var(--border-medium);
  border: 0;
  cursor: pointer;
  transition: all var(--dur-fast) var(--ease-out);
}

.group button:hover {
  background: var(--accent);
  color: var(--accent-ink);
}

.tabs {
  display: flex;
  gap: 6px;
  margin: 14px 0 6px;
}

.tab {
  flex: 1;
  width: auto;
  margin: 0;
  padding: 9px 8px;
  font-size: 13px;
  background: var(--glass-bg);
  color: var(--muted);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: var(--font-semibold);
  backdrop-filter: var(--glass-blur);
  transition: all var(--dur-normal) var(--ease-out);
  will-change: box-shadow, background, border-color;
}

.tab.on {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
}

@media (hover: hover) and (pointer: fine) {
  .tab:not(.on):hover {
    background: var(--glass-bg-light);
    border-color: var(--border-medium);
  }
}

.lb {
  list-style: none;
  margin: 0;
  padding: 0;
  max-height: 34vh;
  overflow-y: auto;
  text-align: left;
}

.lb li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px;
  border-radius: 10px;
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  transition: all var(--dur-fast) var(--ease-out);
  will-change: box-shadow, background, border-color, transform;
}

.lb li:nth-child(odd) {
  background: var(--glass-bg);
}

.lb li.me {
  background: linear-gradient(90deg, rgba(255, 215, 80, 0.2), rgba(255, 215, 80, 0.05));
  color: var(--accent);
  font-weight: var(--font-black);
  border: 1px solid var(--border-medium);
}

@media (hover: hover) and (pointer: fine) {
  .lb li:not(.me):hover {
    background: var(--glass-bg-light);
    filter: brightness(1.06);
    box-shadow: 0 0 8px rgba(255, 215, 80, 0.15);
    animation: glow-cascade 0.5s ease-in-out;
  }
}

.lb .rank {
  width: 22px;
  color: var(--muted);
  font-weight: var(--font-black);
  text-align: center;
}

.lb li.me .rank {
  color: var(--accent);
  font-weight: var(--font-black);
}

.lb .nm {
  flex: 1;
  font-weight: var(--font-bold);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.lb .pts {
  font-weight: var(--font-black);
}

.lb .empty {
  color: var(--muted);
  font-size: 13px;
  padding: 8px;
  text-align: center;
}

/* ============================================================================
   SHOP — Earned coins system
   ============================================================================ */

.balance {
  font-size: 24px;
  font-weight: 900;
  color: var(--accent);
  margin: 6px 0 10px;
  font-variant-numeric: tabular-nums;
  text-shadow: 0 0 12px rgba(255, 215, 80, 0.25);
}

button small {
  display: block;
  font-weight: var(--font-semibold);
  opacity: 0.85;
  font-size: 11px;
}

.shop-row {
  display: flex;
  align-items: center;
  gap: var(--gap-lg);
  padding: 11px 0;
  border-top: 1px solid var(--border-light);
  text-align: left;
  transition: all var(--dur-normal) var(--ease-out);
}

.shop-row:hover {
  background: var(--glass-bg);
  padding: 11px 8px;
  border-radius: var(--radius-sm);
}

.shop-info {
  flex: 1;
  font-size: 14px;
  font-weight: var(--font-bold);
}

.shop-info small {
  display: block;
  color: var(--muted);
  font-size: 11px;
  font-weight: var(--font-semibold);
  margin-top: 2px;
  opacity: 0.7;
}

.shop-row button {
  width: auto;
  margin: 0;
  padding: 10px 14px;
  font-size: 14px;
  white-space: nowrap;
}

/* ============================================================================
   TOOLS — Wallet-funded power-ups (src/monetization.js useWalletTool)
   ============================================================================ */

.tool-actions {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 0 0 auto;
}

.tool-actions button {
  width: auto;
  margin: 0;
  padding: 8px 12px;
  font-size: 12px;
  white-space: nowrap;
}

.shop-row.on .shop-info {
  color: var(--accent);
  font-weight: var(--font-black);
}

.shop-row.on {
  background: rgba(255, 215, 80, 0.08);
  padding: 11px 8px;
  border-radius: var(--radius-sm);
  border-color: var(--accent);
  border-top-width: 1px;
}

/* Défis : même ligne que la boutique, juste un statut (récompense / réussi)
   à droite au lieu d'un bouton d'achat. */
.chal-badge {
  font-size: 12px;
  font-weight: var(--font-bold);
  color: var(--muted);
  white-space: nowrap;
}

.shop-row.on .chal-badge {
  color: var(--accent);
}

/* ============================================================================
   DÉFIS — Fixed-level list (src/challenges.js)
   ============================================================================ */

.challenge-row {
  display: flex;
  align-items: center;
  gap: var(--gap-md);
  padding: 11px 0;
  border-top: 1px solid var(--border-light);
  text-align: left;
  transition: opacity var(--dur-normal) var(--ease-out);
}

.challenge-row:first-child {
  border-top: 0;
}

.challenge-row.locked {
  opacity: 0.5;
}

.challenge-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex: none;
  box-shadow: 0 0 8px currentColor;
}

.challenge-dot.tier-bronze   { color: #cd7f32; background: currentColor; }
.challenge-dot.tier-silver   { color: #b9c2cc; background: currentColor; }
.challenge-dot.tier-gold     { color: var(--accent); background: currentColor; }
.challenge-dot.tier-platinum { color: #7ad0ff; background: currentColor; }
.challenge-dot.tier-diamond  { color: #c05cff; background: currentColor; }

.challenge-info {
  flex: 1;
  font-size: 14px;
  font-weight: var(--font-bold);
}

.challenge-info small {
  display: block;
  color: var(--muted);
  font-size: 11px;
  font-weight: var(--font-semibold);
  margin-top: 2px;
  opacity: 0.75;
}

.challenge-row button {
  width: auto;
  margin: 0;
  padding: 10px 14px;
  font-size: 13px;
  white-space: nowrap;
}

.challenge-icon {
  width: 20px;
  height: 20px;
  flex: none;
  color: var(--muted);
}

.challenge-row.done .challenge-icon {
  color: #3fd39b;
}

[dir=rtl] .challenge-info {
  text-align: right;
}

/* ============================================================================
   SWATCHES — Color palette preview
   ============================================================================ */

.swatches {
  display: flex;
  gap: 3px;
  margin-top: 5px;
  animation: swatches-fade-in 0.3s var(--ease-out);
}

@keyframes swatches-fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

.swatches i {
  width: 14px;
  height: 14px;
  border-radius: var(--radius-xs);
  display: block;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.15), var(--shadow-xs);
  transition: all var(--dur-fast) var(--ease-out);
  will-change: transform, box-shadow;
}

@media (hover: hover) and (pointer: fine) {
  .swatches i:hover {
    transform: scale(1.15) translateY(-2px);
    box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.25), var(--shadow-md);
  }
}

.muted {
  color: var(--muted);
  font-size: 12px;
  margin-top: 10px;
  opacity: 0.7;
}

/* ============================================================================
   PREMIUM ANIMATIONS & ENHANCED GLOWS
   ============================================================================ */

@keyframes brand-pulse {
  0%, 100% {
    text-shadow: 0 0 12px rgba(255, 215, 80, 0.35), 0 0 24px rgba(255, 215, 80, 0.12);
    transform: scale(1);
  }
  50% {
    text-shadow: 0 0 24px rgba(255, 215, 80, 0.55), 0 0 48px rgba(255, 215, 80, 0.25);
    transform: scale(1.02);
  }
}

@keyframes value-glow {
  0%, 100% {
    text-shadow: 0 0 8px rgba(255, 215, 80, 0.25), 0 0 16px rgba(255, 215, 80, 0.12);
  }
  50% {
    text-shadow: 0 0 16px rgba(255, 215, 80, 0.40), 0 0 32px rgba(255, 215, 80, 0.20);
  }
}

@keyframes success-pop {
  0% {
    transform: scale(0.85);
    opacity: 0;
  }
  50% {
    transform: scale(1.12);
    box-shadow: 0 0 20px rgba(255, 215, 80, 0.3);
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes glow-cascade {
  0% {
    box-shadow: var(--shadow-xs),
                0 0 8px rgba(255, 215, 80, 0.12);
  }
  50% {
    box-shadow: var(--shadow-md),
                0 0 24px rgba(255, 215, 80, 0.30),
                0 0 48px rgba(255, 215, 80, 0.15);
  }
  100% {
    box-shadow: var(--shadow-xs),
                0 0 8px rgba(255, 215, 80, 0.12);
  }
}

/* Enhanced tile merge animations with premium effects */
@keyframes tile-pop-enhanced {
  0% {
    transform: scale(0.8) rotateZ(-8deg);
    opacity: 0;
    filter: blur(2px);
  }
  50% {
    transform: scale(1.15) rotateZ(4deg);
    filter: brightness(1.3) drop-shadow(0 0 12px rgba(255, 215, 80, 0.5));
  }
  100% {
    transform: scale(1) rotateZ(0);
    opacity: 1;
    filter: brightness(1);
  }
}

@keyframes tile-merge-shine {
  0%, 100% {
    background-position: 0% center;
  }
  50% {
    background-position: 100% center;
  }
}

@keyframes particle-burst {
  0% {
    opacity: 1;
    transform: translate(0, 0) scale(1);
  }
  100% {
    opacity: 0;
    transform: translate(var(--tx), var(--ty)) scale(0);
  }
}

/* Premium button effects */
@keyframes button-glow-pulse {
  0%, 100% {
    box-shadow: var(--shadow-lg), 0 0 12px rgba(255, 215, 80, 0.2);
  }
  50% {
    box-shadow: var(--shadow-lg), 0 0 24px rgba(255, 215, 80, 0.35);
  }
}

/* Smooth tile entrance */
@keyframes tile-entrance {
  0% {
    transform: translateY(-20px) scale(0.8);
    opacity: 0;
  }
  60% {
    transform: translateY(2px) scale(1.05);
  }
  100% {
    transform: translateY(0) scale(1);
    opacity: 1;
  }
}

/* ============================================================================
   ACCESSIBILITY — Focus, reduced motion, high contrast
   ============================================================================ */

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-offset);
}

/* Mouvement réduit */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ============================================================================
   RTL (Arabic) — Logical flow, symmetric layout
   ============================================================================ */

[dir=rtl] .score {
  text-align: left;
}

[dir=rtl] .board-title,
[dir=rtl] .field,
[dir=rtl] .group,
[dir=rtl] .lb,
[dir=rtl] .shop-info {
  text-align: right;
}

[dir=rtl] .brand,
[dir=rtl] .logo {
  letter-spacing: normal;
  direction: ltr;
}

[dir=rtl] .hud {
  flex-direction: row-reverse;
}

[dir=rtl] .modes {
  flex-direction: row-reverse;
}

[dir=rtl] .chip-btn {
  margin: 0 auto 0 0;
}

[dir=rtl] .lb .rank {
  order: 2;
}

[dir=rtl] .lb .nm {
  order: 1;
  text-align: right;
}

/* ============================================================================
   MODE DÉFIS — barre de défi, liste des niveaux, écrans de fin
   ============================================================================ */

/* Barre de défi : remplace le HUD normal pendant une tentative. */
.challenge-bar {
  width: 100%;
  display: flex;
  align-items: center;
  gap: var(--gap-md);
  padding: var(--pad-sm) var(--gap-lg);
  border-radius: var(--radius-md);
  background: var(--glass-bg);
  border: 1px solid var(--border-light);
  backdrop-filter: var(--glass-blur);
  box-shadow: var(--shadow-xs);
}

.cb-info {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: var(--font-black);
  font-size: 15px;
  font-variant-numeric: tabular-nums;
}

.cb-icon {
  width: 16px;
  height: 16px;
  color: var(--accent);
  flex-shrink: 0;
}

.cb-moves {
  margin-left: auto;
  font-size: 13px;
  font-weight: var(--font-bold);
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.cb-badge {
  font-size: 10px;
  font-weight: var(--font-bold);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-label);
  color: var(--warm);
  border: 1px solid rgba(255, 179, 0, 0.4);
  border-radius: var(--radius-pill);
  padding: 2px 8px;
  white-space: nowrap;
}

.cb-quit {
  width: 26px;
  height: 26px;
  flex: none;
  padding: 0;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-pill);
  background: var(--glass-bg-light);
  color: var(--ink);
  box-shadow: none;
}

.cb-quit svg { width: 14px; height: 14px; }

/* Le mode Défi masque le HUD/actions endless habituels : la barre de défi
   et les écrans de fin dédiés (#level-win / #level-lose) prennent le relais. */
#wrap.challenge .hud,
#wrap.challenge .actions,
#wrap.challenge footer { display: none; }

/* Carte large : la liste des niveaux a besoin de plus de place que 360px. */
.overlay .card.wide { width: min(460px, 92vw); text-align: left; }
.overlay .card.wide h2,
.overlay .card.wide > .sub { text-align: center; }

.levels-progress {
  text-align: center;
  color: var(--muted);
  font-size: 12px;
  font-weight: var(--font-semibold);
  margin-bottom: 12px;
}

.chapter-title {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin: 16px 0 8px;
  font-size: 12px;
  font-weight: var(--font-bold);
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-label);
}

.chapter-title:first-child { margin-top: 0; }

.chapter-title .num {
  color: var(--accent);
  font-weight: var(--font-black);
}

.level-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
}

.level-chip {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  aspect-ratio: 1;
  border-radius: var(--radius-md);
  background: var(--glass-bg);
  border: 1px solid var(--border-light);
  color: var(--ink);
  cursor: pointer;
  font-weight: var(--font-black);
  font-size: 15px;
  padding: 0;
  margin: 0;
  transition: all var(--dur-fast) var(--ease-out);
  box-shadow: var(--shadow-xs);
}

.level-chip:active:not(:disabled) { transform: scale(0.94); }

.level-chip.done {
  background: rgba(255, 215, 80, 0.12);
  border-color: rgba(255, 215, 80, 0.4);
  color: var(--accent);
}

.level-chip.locked {
  color: var(--muted);
  opacity: 0.55;
  cursor: not-allowed;
}

.level-chip .lock-ic { width: 14px; height: 14px; }

.level-chip .mini-stars {
  display: flex;
  gap: 1px;
}

.level-chip .mini-stars svg { width: 8px; height: 8px; }

/* Étoiles gagnées sur l'écran de victoire d'un défi. */
.level-stars {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin: 10px 0;
}

.level-stars svg { width: 30px; height: 30px; color: var(--border-medium); }
.level-stars svg.on { color: var(--accent); filter: drop-shadow(0 0 8px rgba(255, 215, 80, 0.4)); }

[dir=rtl] .chapter-title,
[dir=rtl] .overlay .card.wide { text-align: right; }

[dir=rtl] .cb-moves { margin-left: 0; margin-right: auto; }