:root {
  color-scheme: dark;
  --bg: #0f1117;
  --surface: #171a23;
  --surface-2: #232838;
  --border: #262a36;
  --text: #e7e9ee;
  --muted: #9aa1b1;
  --accent: #5b8cff;
  --tile: #e8d9b5;     /* jeton de Scrabble */
  --tile-ink: #1a1a1a;
  --tap: 44px; /* taille minimale d'une zone tactile */
  --link-pad: 12px; /* espacement horizontal des liens de navigation */
}

*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  overflow-wrap: break-word;
}

main { flex: 1 0 auto; }

img, svg, video { max-width: 100%; height: auto; }
code { overflow-wrap: anywhere; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.container {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  padding-left: max(20px, env(safe-area-inset-left));
  padding-right: max(20px, env(safe-area-inset-right));
}

/* ---------- En-tete et navigation ---------- */

.site-header {
  border-bottom: 1px solid var(--border);
}

.site-header nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 4px 16px;
  padding-top: 12px;
  padding-bottom: 12px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: var(--tap);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
  text-decoration: none;
}

.logo-tile {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 5px;
  background: var(--tile);
  color: var(--tile-ink);
  font-size: 0.95rem;
}

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
}

.links a {
  display: inline-flex;
  align-items: center;
  min-height: var(--tap);
  padding: 0 var(--link-pad);
  border-radius: 8px;
  color: var(--muted);
  text-decoration: none;
}

.links a[aria-current="page"] {
  color: var(--text);
  background: var(--surface-2);
}

/* ---------- Contenu ---------- */

.hero {
  padding: 48px 0 24px;
}

.hero h1 {
  font-size: 2rem;
  line-height: 1.2;
  margin-bottom: 12px;
}

.hero p {
  color: var(--muted);
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  margin: 24px 0;
}

h1, h2 { line-height: 1.25; }

button {
  font: inherit;
  font-size: 0.95rem;
  line-height: 1.2;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 8px;
  padding: 10px 16px;
  min-height: var(--tap);
  margin: 4px 8px 4px 0;
  cursor: pointer;
  touch-action: manipulation;
}

.site-footer {
  text-align: center;
  color: var(--muted);
  padding: 32px 0;
  padding-bottom: calc(32px + env(safe-area-inset-bottom));
  font-size: 0.85rem;
}

a { color: var(--accent); }

.muted { color: var(--muted); }

/* Lien affiche comme un bouton (appels a l'action). */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--tap);
  padding: 12px 22px;
  border-radius: 8px;
  background: var(--accent);
  color: white;
  font-weight: 600;
  text-decoration: none;
}

.btn-secondary {
  background: var(--surface-2);
  color: var(--text);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.cta-center {
  justify-content: center;
  margin: 8px 0 24px;
}

/* ---------- Accueil ---------- */

.home-hero h1 {
  font-size: 2.3rem;
  max-width: 16em;
}

.home-hero p {
  font-size: 1.05rem;
  max-width: 36em;
}

.word-tiles {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 20px;
}

.tile {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  /* 8 jetons toujours sur une ligne, meme sur un petit telephone. */
  width: min(44px, calc((100% - 42px) / 8));
  aspect-ratio: 1 / 1;
  border-radius: 6px;
  background: var(--tile);
  color: var(--tile-ink);
  font-weight: 700;
  font-size: clamp(1rem, 5vw, 1.35rem);
  box-shadow: 0 3px 0 #b9a77c;
}

.tile small {
  position: absolute;
  right: 4px;
  bottom: 2px;
  font-size: 0.6rem;
  font-weight: 400;
}

.features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 24px 0;
}

.feature {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}

.feature h2 {
  font-size: 1.05rem;
  margin: 0 0 6px;
}

.feature p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.card h2 { margin-top: 0; }

.steps {
  padding-left: 1.3em;
  margin: 0 0 12px;
}

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

.notice {
  color: var(--muted);
  font-size: 0.85rem;
  text-align: center;
}

/* ---------- A propos ---------- */

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

.legend {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.legend li {
  display: flex;
  align-items: center;
  gap: 12px;
}

.swatch {
  flex: 0 0 40px;
  height: 40px;
  border-radius: 4px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text);
}

/* Memes couleurs que les cases du plateau. */
.swatch.dl { background: #16324f; }
.swatch.tl { background: #0f4a63; }
.swatch.dw { background: #4a2436; }
.swatch.tw { background: #5c1f1f; }

.letter-values {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.value-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.value-label {
  flex: 0 0 5.5em;
  color: var(--muted);
  font-size: 0.9rem;
}

.mini-tiles {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.mini-tiles span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 4px;
  background: var(--tile);
  color: var(--tile-ink);
  font-weight: 700;
}

.mini-tiles .joker { background: #cfe3d0; }

/* ---------- Scrabble ---------- */

.hidden {
  display: none !important;
}

.scrabble-card p {
  color: var(--muted);
}

.scrabble-help {
  margin-bottom: 8px;
}

.scrabble-help summary,
.scrabble-more summary {
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  min-height: var(--tap);
  color: var(--muted);
  list-style: none;
}

.scrabble-help summary::-webkit-details-marker,
.scrabble-more summary::-webkit-details-marker { display: none; }

.scrabble-help summary::after,
.scrabble-more summary::after {
  content: "\25BE"; /* fleche vers le bas : repliable */
}

.scrabble-help[open] summary::after,
.scrabble-more[open] summary::after {
  content: "\25B4";
}

.scrabble-mode-screen {
  text-align: center;
  padding: 24px 0;
}

.scrabble-mode-buttons {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin: 16px 0;
}

.scrabble-mode-buttons button {
  margin: 0;
  padding: 14px 22px;
  font-size: 1rem;
}

.scrabble-card .scrabble-status {
  min-height: 1.4em;
  margin: 8px 0 0;
  color: var(--accent);
  font-size: 0.9rem;
}

.scrabble-hint {
  color: var(--muted);
  font-size: 0.85rem;
  max-width: 480px;
  margin: 16px auto 0;
}

.scrabble-info {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px 12px;
  color: var(--text);
  font-size: 0.95rem;
  margin: 16px 0;
}

.scrabble-players {
  align-items: center;
}

.player-box {
  padding: 6px 12px;
  border-radius: 8px;
  border: 1px solid transparent;
  transition: border-color 0.2s, background 0.2s;
}

.player-box.active-player {
  border-color: var(--accent);
  background: rgba(91, 140, 255, 0.12);
}

.scrabble-turn {
  color: var(--accent);
  font-weight: 700;
  font-size: 0.9rem;
}

/* Plateau : container-type permet de dimensionner lettres et points en cqw
   (1cqw = 1 % de la largeur du plateau), donc proportionnellement aux cases. */
.scrabble-board {
  container-type: inline-size;
  display: grid;
  grid-template-columns: repeat(15, minmax(0, 1fr));
  gap: 2px;
  width: 100%;
  max-width: 560px;
  margin: 0 auto;
  aspect-ratio: 1 / 1;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.scrabble-cell {
  position: relative;
  min-width: 0;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  aspect-ratio: 1 / 1;
}

.scrabble-cell.dl { background: #16324f; }
.scrabble-cell.tl { background: #0f4a63; }
.scrabble-cell.dw { background: #4a2436; }
.scrabble-cell.tw { background: #5c1f1f; }
.scrabble-cell.center { background: #4a2436; }

.scrabble-cell .cell-premium {
  font-size: 0.55rem;
  font-size: 2.2cqw;
  color: var(--muted);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.scrabble-cell .cell-star {
  color: var(--muted);
  font-size: 0.9rem;
  font-size: 4cqw;
}

.scrabble-cell.filled {
  background: #e8d9b5;
}

.scrabble-cell.tentative {
  background: #f2e6c2;
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

.scrabble-cell.blank-tile {
  background: #cfe3d0;
}

.scrabble-cell .cell-letter {
  color: #1a1a1a;
  font-weight: 700;
  font-size: clamp(0.6rem, 2vw, 0.95rem);
  font-size: 4.3cqw;
  line-height: 1;
}

.scrabble-cell .cell-pts {
  position: absolute;
  bottom: 2px;
  right: 3px;
  font-size: 0.5rem;
  font-size: 2.2cqw;
  line-height: 1;
  bottom: 0.5cqw;
  right: 0.7cqw;
  color: #1a1a1a;
  font-weight: 400;
}

.scrabble-suggestions {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  margin-top: 12px;
  font-size: 0.9rem;
}

.scrabble-suggestions p {
  margin: 0 0 8px;
  color: var(--muted);
}

.suggestion-list {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.suggestion-btn {
  margin: 0;
  background: #2c5f4f;
}

/* Chevalet + message + actions principales : groupe "dock", colle au bas de l'ecran sur mobile. */
.scrabble-dock {
  margin-top: 8px;
}

.scrabble-rack {
  display: flex;
  gap: 8px;
  justify-content: center;
  min-height: 52px;
  margin-top: 12px;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.rack-tile {
  position: relative;
  flex: 0 1 48px;
  min-width: 0;
  aspect-ratio: 1 / 1;
  background: #e8d9b5;
  color: #1a1a1a;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
  cursor: pointer;
}

.rack-tile.blank-tile {
  background: #cfe3d0;
}

.rack-tile.selected {
  outline: 3px solid var(--accent);
  outline-offset: 1px;
}

.rack-tile .pts {
  position: absolute;
  bottom: 2px;
  right: 4px;
  font-size: 0.55rem;
  font-weight: 400;
}

.scrabble-message {
  text-align: center;
  min-height: 2.6em;
  margin: 8px 0 0;
  color: var(--accent);
  font-size: 0.9rem;
  line-height: 1.3;
}

.scrabble-controls {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 12px;
}

.scrabble-controls button {
  margin: 0;
}

.scrabble-controls-secondary button {
  background: var(--surface-2);
}

body.ai-turn .scrabble-board,
body.ai-turn .scrabble-rack,
body.ai-turn .scrabble-controls button {
  pointer-events: none;
  opacity: 0.6;
}

/* Sur ordinateur, le repli "Plus d'actions" est toujours ouvert et son titre inutile. */
@media (min-width: 641px) {
  .scrabble-more > summary { display: none; }
}

/* ---------- Survol : uniquement pour les pointeurs qui savent survoler ---------- */

@media (hover: hover) {
  button:hover { opacity: 0.9; }
  .links a:hover { color: var(--text); }
  .btn:hover { opacity: 0.9; }
  .suggestion-btn:hover { opacity: 0.85; }
}

/* ---------- Tablette et telephone ---------- */

@media (max-width: 640px) {
  .container {
    padding-left: max(16px, env(safe-area-inset-left));
    padding-right: max(16px, env(safe-area-inset-right));
  }

  /* Le logo au-dessus, les liens sur toute la largeur ; la marge negative compense le
     padding des liens pour que leur texte s'aligne sur la marge de la page. */
  :root { --link-pad: 8px; }
  .site-header nav { gap: 0 12px; }
  .links {
    width: calc(100% + 2 * var(--link-pad));
    margin: 0 calc(-1 * var(--link-pad));
  }
  .links a {
    flex: 1 1 auto;          /* si une ligne ne suffit pas, les liens s'etirent au lieu de laisser un orphelin */
    justify-content: center;
    font-size: 0.9rem;
  }

  .hero { padding: 28px 0 8px; }
  .hero h1,
  .home-hero h1 { font-size: 1.6rem; }

  .card {
    padding: 16px;
    margin: 16px 0;
  }

  .card h1 { font-size: 1.5rem; margin-top: 0; }

  .cta-row .btn { flex: 1 1 100%; }
  .features { grid-template-columns: 1fr; gap: 12px; }

  /* Scrabble */
  .scrabble-card {
    --scrabble-pad: 12px;
    padding: var(--scrabble-pad);
  }

  .scrabble-mode-buttons button { flex: 1 1 100%; }

  /* Les deux joueurs cote a cote, l'indicateur de tour centre au-dessus. */
  .scrabble-players {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    margin: 12px 0 8px;
  }

  .scrabble-turn {
    grid-column: 1 / -1;
    grid-row: 1;
    text-align: center;
  }

  .player-box { text-align: center; }

  .scrabble-players + .scrabble-info {
    justify-content: center;
    margin: 0 0 12px;
  }

  .scrabble-board { gap: 1px; }

  .scrabble-suggestions { padding: 10px 12px; }
  .suggestion-btn { flex: 1 1 calc(50% - 4px); }

  .rack-tile {
    font-size: clamp(1rem, 5.5vw, 1.35rem);
  }

  /* Actions principales sur une seule ligne (Valider un peu plus large) ; actions secondaires en 2 x 2. */
  .scrabble-controls {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
  }

  .scrabble-dock .scrabble-controls {
    grid-template-columns: 1.3fr 1fr 1fr;
    gap: 6px;
    margin-top: 8px;
  }

  .scrabble-dock .scrabble-controls button {
    padding: 8px 6px;
    font-size: 0.88rem;
  }

  .scrabble-more summary { min-height: 40px; }
}

/* Telephone en portrait : le chevalet et les actions principales restent visibles
   pendant qu'on fait defiler le plateau. Pas en paysage (trop peu de hauteur). */
@media (max-width: 640px) and (min-height: 560px) {
  .scrabble-dock {
    position: sticky;
    bottom: 0;
    z-index: 5;
    margin: 12px calc(-1 * var(--scrabble-pad)) 0;
    padding: 4px var(--scrabble-pad) calc(8px + env(safe-area-inset-bottom));
    background: var(--surface);
    border-top: 1px solid var(--border);
    box-shadow: 0 -10px 18px rgba(0, 0, 0, 0.4);
  }

  .scrabble-dock .scrabble-rack {
    margin-top: 6px;
    min-height: 48px;
  }

  .scrabble-dock .scrabble-message {
    margin-top: 6px;
    min-height: 2.6em;
    font-size: 0.85rem;
  }
}

/* Petits telephones : la carte du Scrabble occupe toute la largeur pour agrandir le plateau. */
@media (max-width: 480px) {
  .scrabble-card {
    --scrabble-pad: 8px;
    margin-left: calc(-1 * max(16px, env(safe-area-inset-left)));
    margin-right: calc(-1 * max(16px, env(safe-area-inset-right)));
    border-left: 0;
    border-right: 0;
    border-radius: 0;
  }

}

@media (max-width: 360px) {
  .container {
    padding-left: max(12px, env(safe-area-inset-left));
    padding-right: max(12px, env(safe-area-inset-right));
  }

  :root { --link-pad: 5px; }
  .links a { font-size: 0.85rem; }
  .card { padding: 14px; }
  .scrabble-card {
    padding: var(--scrabble-pad);
    margin-left: calc(-1 * max(12px, env(safe-area-inset-left)));
    margin-right: calc(-1 * max(12px, env(safe-area-inset-right)));
  }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}