/* ============================================================================
   LETRA — style cartoon kawaii (charte galaxie SANTVIA, standard flotte)
   ============================================================================
   Aplats de couleur, contour épais net (--toon-outline), ombres "sticker" plates
   (zéro flou, décalage net), reflet brillant statique en 2e couche de
   background (--kawaii-sheen), formes rondes. Thème piloté par /_kit/theme.js
   (html[data-theme]), pas par le seul OS — voir index.html.

   La grille de jeu (canvas #board, src/game.js › drawTile) reste une scène
   fixe autonome (dégradé "bonbon" + gloss, même patron que klonz/atouz) :
   seul le CHROME (HUD, outils, clavier, écrans) suit le kawaii ci-dessous.
   ========================================================================== */

:root {
  --letter-correct: #3aff8f;
  --letter-present: #ffc107;
  --letter-absent: var(--cb-text-muted, #7c8aa0);
  --danger: var(--cb-danger, #ff5252);

  /* Fond (violet vif -> profond) */
  --lt-bg-1: #4a2f8f;
  --lt-bg-2: #2a1a5c;
  --lt-bg-3: #140b30;

  /* Contour + ombres sticker (kawaii B) : zéro flou, décalage plat net. */
  --toon-outline: #180f30;
  --toon-outline-w: 3px;
  --lt-border: rgba(255, 255, 255, 0.22);
  --kawaii-sheen: linear-gradient(165deg, rgba(255, 255, 255, 0.30), rgba(255, 255, 255, 0) 55%);
  --lt-shadow-xs: 0 2px 0 var(--toon-outline);
  --lt-shadow-sm: 0 3px 0 var(--toon-outline);
  --lt-shadow-md: 0 4px 0 var(--toon-outline);
  --lt-shadow-lg: 0 6px 0 var(--toon-outline);
  --lt-shadow-xl: 0 8px 0 var(--toon-outline);
  --lt-shadow-2xl: 0 10px 0 var(--toon-outline);

  /* Surfaces (panneaux/chips/touches) */
  --lt-panel: #2c1d63;
  --lt-panel-2: #382577;
  --lt-key: #362472;

  /* Encre (contrastes AA+, kit CB-Arcade) */
  --text-primary: var(--cb-text-primary, #f0f4fa);
  --text-secondary: var(--cb-text-secondary, #9aa8bd);
  --text-muted: var(--cb-text-muted, #7c8aa0);
  --text-on-accent: var(--cb-text-on-accent, #0a0f22);

  --accent: var(--cb-accent, #ffc107);
  --accent-light: var(--cb-accent-light, #ffd54f);
  --accent-dark: var(--cb-accent-dark, #d4a500);

  --duration-instant: var(--cb-duration-instant, 0.08s);
  --duration-fast: var(--cb-duration-fast, 0.14s);
  --duration-normal: var(--cb-duration-normal, 0.20s);
  --duration-slow: var(--cb-duration-slow, 0.35s);
  --easing-bounce: var(--cb-easing-bounce, cubic-bezier(0.175, 0.885, 0.32, 1.275));
  --easing-out: var(--cb-easing-ease-out, cubic-bezier(0.16, 1, 0.3, 1));
  --easing-in-out: var(--cb-easing-in-out, cubic-bezier(0.38, 0.1, 0.2, 1));

  color-scheme: dark;
}

html[data-theme="light"] {
  --lt-bg-1: #f3edff;
  --lt-bg-2: #e3d6fb;
  --lt-bg-3: #cdb8f5;
  --lt-panel: #ffffff;
  --lt-panel-2: #f5f0ff;
  --lt-key: #f0e9fd;
  --lt-border: rgba(24, 15, 48, 0.14);
  --text-primary: #1e1440;
  --text-secondary: #5b5885;
  --text-muted: #756fa0;
  --text-on-accent: #3a2600;
  color-scheme: light;
}

/* --- Reset & base --- */
* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html, body {
  margin: 0;
  height: 100%;
  color: var(--text-primary);
  font-family: var(--cb-font-family, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, system-ui, sans-serif);
  overscroll-behavior: none;
  touch-action: none;
}

body {
  background: radial-gradient(1100px 700px at 50% 0%, var(--lt-bg-1), var(--lt-bg-2) 55%, var(--lt-bg-3));
  background-attachment: fixed;
  -webkit-user-select: none;
  user-select: none;
  transition: background-color var(--duration-normal) var(--easing-in-out);
}

[dir="rtl"] {
  direction: rtl;
}

/* --- Layout principal (safe-areas iPhone) --- */
#app {
  position: relative;
  z-index: 1;
  max-width: 520px;
  margin: 0 auto;
  min-height: 100%;
  padding: max(12px, env(safe-area-inset-top)) max(12px, env(safe-area-inset-right)) max(10px, env(safe-area-inset-bottom)) max(12px, env(safe-area-inset-left));
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* --- HUD en pilules sticker --- */
.hud {
  display: flex;
  align-items: center;
  gap: 7px;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--text-primary);
  background: var(--lt-panel);
  background-image: var(--kawaii-sheen);
  border: var(--toon-outline-w) solid var(--toon-outline);
  box-shadow: var(--lt-shadow-sm);
  transition: transform var(--duration-fast) var(--easing-in-out), box-shadow var(--duration-fast) var(--easing-in-out);
}

.pill .ico {
  display: inline-flex;
  width: 16px;
  height: 16px;
}

.pill .ico svg {
  width: 100%;
  height: 100%;
}

button.pill {
  cursor: pointer;
  font-family: inherit;
}

button.pill:active {
  transform: translateY(3px);
  box-shadow: none;
}

@media (hover: hover) and (pointer: fine) {
  button.pill:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: var(--lt-shadow-md);
  }
}

.pill.grow {
  margin-inline-start: auto;
}

/* --- Porte-monnaie mutualisé (2 soldes CB-Arcade : Jouer + ◆ Gagner) --- */
.wallet-hud {
  display: flex;
  gap: 6px;
  align-items: center;
}

.wchip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 7px 12px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  color: var(--text-primary);
  background: var(--lt-panel);
  background-image: var(--kawaii-sheen);
  border: var(--toon-outline-w) solid var(--toon-outline);
  box-shadow: var(--lt-shadow-sm);
}

.wchip .ic {
  display: inline-flex;
  width: 14px;
  height: 14px;
  line-height: 1;
}

.wchip .ic svg {
  width: 100%;
  height: 100%;
}

.wchip.earn {
  color: var(--text-on-accent);
  border-color: var(--toon-outline);
  background: var(--accent);
  background-image: var(--kawaii-sheen);
}

/* --- Consigne visible --- */
.objective {
  text-align: center;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  min-height: 18px;
  letter-spacing: 0.02em;
}

.objective b {
  color: var(--accent);
  font-weight: 800;
}

/* --- Bezel du plateau : cadre kawaii, la grille (canvas) reste une scène fixe --- */
.board-wrap {
  width: 100%;
  margin: 2px auto 0;
  padding: 12px;
  border-radius: 20px;
  background: var(--lt-panel);
  background-image: var(--kawaii-sheen);
  border: var(--toon-outline-w) solid var(--toon-outline);
  box-shadow: var(--lt-shadow-lg);
}

canvas#board {
  width: 100%;
  height: auto;
  display: block;
  touch-action: manipulation;
  border-radius: 14px;
}

/* --- Barre d'outils --- */
.tools {
  display: flex;
  gap: 8px;
}

.tool {
  position: relative;
  flex: 1;
  padding: 10px 6px 8px;
  cursor: pointer;
  border-radius: 14px;
  font-family: inherit;
  color: var(--text-primary);
  background: var(--lt-panel);
  background-image: var(--kawaii-sheen);
  border: var(--toon-outline-w) solid var(--toon-outline);
  box-shadow: var(--lt-shadow-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  transition: transform var(--duration-fast) var(--easing-in-out), box-shadow var(--duration-fast) var(--easing-in-out);
}

.tool:active {
  transform: translateY(3px) scale(0.98);
  box-shadow: none;
}

@media (hover: hover) and (pointer: fine) {
  .tool:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: var(--lt-shadow-md);
  }
}

.tool .ico {
  display: inline-flex;
  width: 22px;
  height: 22px;
}

.tool .ico svg {
  width: 100%;
  height: 100%;
}

.tool .nm {
  font-size: 10px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-secondary);
}

.tool .n {
  position: absolute;
  top: -8px;
  inset-inline-end: -6px;
  min-width: 24px;
  height: 22px;
  padding: 0 6px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 3px;
  background: var(--accent);
  color: var(--text-on-accent);
  font-size: 11px;
  font-weight: 800;
  border: 2px solid var(--toon-outline);
  box-shadow: var(--lt-shadow-xs);
}

.tool .n .ico-mini {
  width: 11px;
  height: 11px;
}

/* --- Clavier --- */
.keyboard {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 2px;
}

.krow {
  display: flex;
  gap: 5px;
  justify-content: center;
  flex-wrap: wrap;
}

.keyboard.pool .krow {
  max-height: 34vh;
  overflow-y: auto;
}

.key {
  flex: 1 1 auto;
  min-width: 28px;
  padding: 11px 6px;
  cursor: pointer;
  border-radius: 12px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.3px;
  color: var(--text-primary);
  background: var(--lt-key);
  border: 2px solid var(--toon-outline);
  box-shadow: var(--lt-shadow-xs);
  transition: transform var(--duration-fast) var(--easing-in-out), box-shadow var(--duration-fast) var(--easing-in-out);
}

.key:active {
  transform: translateY(2px);
  box-shadow: none;
}

@media (hover: hover) and (pointer: fine) {
  .key:hover {
    border-color: var(--accent);
  }
}

.key.wide {
  flex: 2 1 auto;
  font-size: 13px;
  letter-spacing: 0.05em;
}

.key.correct {
  background: var(--letter-correct);
  color: #0c3a22;
  border-color: var(--toon-outline);
}

.key.present {
  background: var(--letter-present);
  color: #3a2600;
  border-color: var(--toon-outline);
}

.key.absent {
  background: rgba(122, 138, 160, 0.30);
  color: var(--text-secondary);
  border-color: var(--lt-border);
  box-shadow: none;
}

/* --- Boutons --- */
.btn {
  width: 100%;
  cursor: pointer;
  font-family: inherit;
  font-weight: 800;
  font-size: 15px;
  letter-spacing: 0.02em;
  padding: 14px 16px;
  border-radius: 16px;
  margin-top: 10px;
  color: var(--text-on-accent);
  background: var(--accent);
  background-image: var(--kawaii-sheen);
  border: var(--toon-outline-w) solid var(--toon-outline);
  box-shadow: var(--lt-shadow-md);
  transition: transform var(--duration-fast) var(--easing-in-out), box-shadow var(--duration-fast) var(--easing-in-out);
}

.btn:active:not(:disabled) {
  transform: translateY(4px);
  box-shadow: none;
}

@media (hover: hover) and (pointer: fine) {
  .btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--lt-shadow-lg);
  }
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn.ghost {
  color: var(--text-primary);
  background: var(--lt-panel);
  background-image: var(--kawaii-sheen);
  box-shadow: var(--lt-shadow-sm);
}

.btn.ghost:active:not(:disabled) {
  box-shadow: none;
}

@media (hover: hover) and (pointer: fine) {
  .btn.ghost:hover:not(:disabled) {
    box-shadow: var(--lt-shadow-md);
  }
}

.btn.ad {
  color: #fff;
  background: #4d78e8;
  background-image: var(--kawaii-sheen);
  box-shadow: var(--lt-shadow-md);
}

.btn small {
  display: block;
  font-weight: 700;
  font-size: 11px;
  opacity: 0.85;
  margin-top: 2px;
}

.btn.slim {
  padding: 11px 12px;
  font-size: 14px;
  margin-top: 6px;
}

/* --- Écrans (overlays) --- */
.screen {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: none;
  align-items: center;
  justify-content: center;
  padding: max(16px, env(safe-area-inset-top)) max(16px, env(safe-area-inset-right)) max(16px, env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));
  background: rgba(10, 6, 24, 0.62);
}

.screen.show {
  display: flex;
  animation: fade-in var(--duration-normal) var(--easing-bounce);
}

@keyframes fade-in {
  from { opacity: 0; transform: scale(0.96); }
  to { opacity: 1; transform: scale(1); }
}

.card {
  width: min(400px, 94vw);
  max-height: 92vh;
  overflow-y: auto;
  text-align: center;
  padding: 24px 22px calc(22px + env(safe-area-inset-bottom));
  border-radius: 22px;
  background: var(--lt-panel);
  background-image: var(--kawaii-sheen);
  border: var(--toon-outline-w) solid var(--toon-outline);
  box-shadow: var(--lt-shadow-xl);
  animation: card-rise var(--duration-normal) var(--easing-bounce);
}

@keyframes card-rise {
  from { transform: translateY(24px) scale(0.94); opacity: 0; }
  to { transform: translateY(0) scale(1); opacity: 1; }
}

.card h2 {
  margin: 0 0 6px;
  font-size: 28px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.card .sub {
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 16px;
  line-height: 1.45;
}

.card .big {
  font-size: 56px;
  font-weight: 800;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  margin: 4px 0;
  letter-spacing: -0.02em;
  text-shadow: 0 3px 0 var(--toon-outline);
}

.big-ico {
  width: 64px;
  height: 64px;
  margin: 6px auto;
  color: var(--accent);
}

.big-ico svg {
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 3px 0 var(--toon-outline));
}

.logo {
  font-size: 48px;
  font-weight: 800;
  letter-spacing: 3px;
  line-height: 1;
  color: var(--accent);
  text-shadow: 0 3px 0 var(--toon-outline);
}

.stats {
  display: flex;
  gap: 8px;
  margin: 16px 0 6px;
}

.stat {
  flex: 1;
  padding: 12px 8px;
  border-radius: 14px;
  background: var(--lt-panel-2);
  border: 2px solid var(--toon-outline);
}

.stat .lbl {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
  color: var(--text-secondary);
}

.stat .val {
  font-size: 24px;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  color: var(--accent);
  margin-top: 4px;
}

/* --- Défis : grille de niveaux par palier --- */
.lvl-board {
  text-align: start;
  margin: 6px 0 4px;
}

.lvl-tier {
  margin-bottom: 14px;
}

.lvl-tier h3 {
  margin: 0 0 8px;
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
}

.lvl-tier-note {
  margin: -4px 0 8px;
  font-size: 11px;
  color: var(--text-secondary);
  opacity: .8;
}

.lvl-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 6px;
}

.lvl {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--lt-border);
  border-radius: 12px;
  background: var(--lt-panel-2);
  color: var(--text-primary);
  font-family: inherit;
  font-weight: 800;
  font-size: 14px;
  cursor: pointer;
  transition: transform var(--duration-fast) var(--easing-in-out);
}

.lvl:active:not(.locked) {
  transform: scale(0.94);
}

.lvl.done {
  color: var(--text-on-accent);
  background: var(--accent);
  border-color: var(--toon-outline);
}

.lvl.locked {
  cursor: not-allowed;
  opacity: 0.45;
}

/* --- Aide, tutoriel --- */
.rules {
  text-align: start;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-primary);
  font-weight: 500;
}

.rules li {
  margin-bottom: 8px;
}

.legend {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin: 14px 0 6px;
}

.legend i {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: inline-block;
  border: 2px solid var(--toon-outline);
  box-shadow: var(--lt-shadow-xs);
  cursor: help;
}

.legend i.c {
  background: var(--letter-correct);
}

.legend i.p {
  background: var(--letter-present);
}

.legend i.a {
  background: rgba(122, 138, 160, 0.35);
}

.dots {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin: 14px 0 8px;
  flex-wrap: wrap;
}

.dot {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  font-size: 12px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--lt-panel-2);
  color: var(--text-secondary);
  border: 2px solid var(--lt-border);
  cursor: pointer;
}

.dot.on {
  background: var(--accent);
  color: var(--text-on-accent);
  border-color: var(--toon-outline);
}

/* --- Toast --- */
.toast {
  position: fixed;
  left: 50%;
  bottom: calc(20px + env(safe-area-inset-bottom));
  transform: translateX(-50%) translateY(12px);
  z-index: 30;
  opacity: 0;
  padding: 12px 20px;
  border-radius: 14px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.3px;
  background: var(--lt-panel);
  border: 2px solid var(--toon-outline);
  color: var(--text-primary);
  box-shadow: var(--lt-shadow-md);
  pointer-events: none;
  max-width: 85vw;
  text-align: center;
  transition: opacity var(--duration-normal) var(--easing-in-out), transform var(--duration-normal) var(--easing-in-out);
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

/* --- Sélecteur de difficulté --- */
.difficulty-selector {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin: 10px 0;
  flex-wrap: wrap;
}

.diff-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border: 2px solid var(--lt-border);
  border-radius: 999px;
  cursor: pointer;
  font-family: inherit;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-secondary);
  background: var(--lt-panel-2);
  transition: transform var(--duration-fast) var(--easing-in-out), box-shadow var(--duration-fast) var(--easing-in-out);
}

.diff-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  display: inline-block;
  border: 1px solid var(--toon-outline);
}

.diff-btn.active {
  color: var(--text-on-accent);
  background: var(--accent);
  border-color: var(--toon-outline);
  box-shadow: var(--lt-shadow-xs);
  font-weight: 800;
}

@media (hover: hover) and (pointer: fine) {
  .diff-btn:hover {
    border-color: var(--accent);
    transform: translateY(-1px);
  }
}

/* --- Gains de fin de manche (icône SVG + texte, zéro emoji) --- */
#over-gain {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  justify-content: center;
}

.gain-bit {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.ico-mini {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

/* --- Accessibilité clavier (focus rings) --- */
a:focus-visible, button:focus-visible,
.key:focus-visible, .tool:focus-visible {
  outline: var(--cb-focus-ring, 2px solid #ffc107);
  outline-offset: var(--cb-focus-offset, 2px);
  box-shadow: var(--cb-focus-shadow, 0 0 0 6px rgba(255, 193, 7, 0.20));
}

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

/* --- Accessibilité : haut contraste --- */
@media (prefers-contrast: more) {
  :root {
    --lt-border: rgba(255, 255, 255, 0.45);
  }

  a:focus-visible, button:focus-visible,
  .key:focus-visible, .tool:focus-visible {
    outline: 3px solid rgba(255, 193, 7, 1);
    outline-offset: 3px;
  }
}

/* --- Responsive mobile-first --- */
@media (max-width: 480px) {
  #app {
    gap: var(--cb-gap-sm, 8px);
    padding: max(10px, env(safe-area-inset-top)) max(10px, env(safe-area-inset-right)) max(8px, env(safe-area-inset-bottom)) max(10px, env(safe-area-inset-left));
  }

  .hud {
    gap: 5px;
  }

  .pill {
    padding: 7px 11px;
    font-size: 13px;
  }

  .wallet-hud {
    gap: 5px;
  }

  .wchip {
    padding: 6px 10px;
    font-size: 12px;
  }

  .btn {
    font-size: 14px;
    padding: 12px 14px;
    margin-top: 8px;
  }

  .btn.slim {
    font-size: 13px;
    padding: 10px 11px;
  }

  .card {
    padding: 18px 15px calc(15px + env(safe-area-inset-bottom));
    border-radius: 18px;
  }

  .card h2 {
    font-size: 24px;
    margin-bottom: 4px;
  }

  .logo {
    font-size: 42px;
    letter-spacing: 2px;
  }

  .stats {
    gap: 6px;
    margin-bottom: 4px;
  }

  .stat {
    padding: 10px 6px;
  }

  .stat .val {
    font-size: 20px;
  }

  .key {
    padding: 10px 4px;
    font-size: 14px;
  }

  .tool {
    padding: 9px 4px 7px;
  }

  .tool .nm {
    font-size: 9px;
  }

  .card .big {
    font-size: 48px;
  }
}

/* --- Tablettes (481px à 768px) --- */
@media (min-width: 481px) and (max-width: 768px) {
  .card {
    width: min(100%, 90vw);
  }

  .card h2 {
    font-size: 26px;
  }
}