:root {
  --bg: #F6F7FA;
  --text: #10151B;
  --muted: #5B6472;
  --border: #10151B;
  --white: #FFFFFF;

  --card-back: #0E4793;
  --card-back-border: #09306A;
  --ring-matched: #035A2C;
  --ring-active: #029ADB;
  --ring-wrong: #D64545;

  --pink: #F06DC1;
  --yellow: #FEC400;
  --grey-badge: #E2E5EA;

  --level-1: #029ADB;
  --level-2: #019A46;
  --level-3: #0E4793;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

[hidden] { display: none !important; }

html, body { height: 100%; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Space Grotesk', system-ui, -apple-system, 'Segoe UI', sans-serif;
  height: 100vh;
  height: 100dvh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.mono { font-family: 'Space Mono', 'Courier New', monospace; }

/* ---------- Header ---------- */

.header {
  flex-shrink: 0;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 32px;
  background: var(--white);
  border-bottom: 2px solid var(--border);
  flex-wrap: wrap;
}

.header__title {
  align-self: flex-end;
  margin-bottom: 8px;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.01em;
  text-transform: uppercase;
}

.levels {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.level-btn {
  min-height: 44px;
  box-sizing: border-box;
  padding: 10px 16px;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  background: var(--white);
  color: var(--text);
  border: 2px solid var(--level-color, var(--text));
  transition: transform .12s ease, background .15s ease, color .15s ease;
}

.level-btn:hover:not(:disabled) { transform: translateY(-1px); }

.level-btn[aria-pressed="true"] {
  background: var(--level-color);
  color: var(--level-text-on-active, var(--text));
  font-weight: 700;
}

.level-btn:disabled {
  cursor: not-allowed;
  opacity: .5;
  filter: grayscale(.6);
}

.level-btn__tag {
  display: inline-block;
  margin-left: 6px;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .04em;
  padding: 2px 6px;
  border-radius: 999px;
  background: rgba(16,21,27,.08);
}

.header__stats {
  display: flex;
  align-items: flex-end;
  gap: 20px;
  flex-wrap: wrap;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
}

.stat__label {
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .06em;
}

.stat__badge {
  padding: 6px 14px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 16px;
  color: var(--text);
  white-space: nowrap;
}

.stat__badge--time { background: var(--pink); }
.stat__badge--score { background: var(--yellow); }
.stat__badge--moves { background: var(--grey-badge); }

.stars { letter-spacing: 1px; }
.stars .filled { color: var(--text); }
.stars .empty { color: rgba(16,21,27,.35); }

.btn {
  min-height: 44px;
  padding: 10px 20px;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  border: 2px solid transparent;
  transition: filter .15s ease, transform .12s ease;
}

.btn:hover { filter: brightness(1.08); transform: translateY(-1px); }

.btn__icon { display: none; }

.btn--primary {
  background: var(--level-3);
  color: var(--white);
  border-color: var(--level-3);
}

.btn--ghost {
  background: var(--white);
  color: var(--text);
  border-color: var(--text);
}

/* ---------- Main / board ---------- */

.main {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 16px 20px;
  gap: 14px;
  overflow: auto;
}

.main__info {
  flex-shrink: 0;
  color: var(--muted);
  font-size: 14px;
  text-align: center;
}

.board {
  flex-shrink: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin: 0 auto;
}

.empty-state {
  width: 100%;
  max-width: 480px;
  text-align: center;
  padding: 48px 24px;
  color: var(--muted);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.empty-state p:first-child { font-size: 18px; color: var(--text); font-weight: 600; }

.empty-state code {
  font-family: 'Space Mono', monospace;
  background: rgba(16,21,27,.06);
  padding: 2px 6px;
  border-radius: 4px;
}

/* ---------- Card ---------- */

.card {
  position: relative;
  width: var(--card-size);
  height: var(--card-size);
  flex-shrink: 0;
  cursor: pointer;
  perspective: 800px;
}

.card.is-matched,
.card.is-disabled { cursor: default; }

.card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform .45s cubic-bezier(.3,.1,.3,1);
  border-radius: 10px;
}

.card.is-flipped .card-inner,
.card.is-matched .card-inner {
  transform: rotateY(180deg);
}

.card.is-wrong .card-inner {
  animation: shake .4s ease;
}

/* Retournement accéléré : l'utilisateur a enchaîné sur une autre carte
   pendant qu'une paire fautive était encore affichée. */
.card.is-quick-hide .card-inner {
  transition-duration: .15s;
}

.face {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border-radius: 10px;
  overflow: hidden;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

/* Face cachée */
.face--back {
  background: var(--card-back);
  border: 1px solid var(--card-back-border);
}

.face--back__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

/* Face visible */
.face--front {
  background: var(--white);
  transform: rotateY(180deg);
  transition: box-shadow .2s ease;
}

.face--front img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.card.is-active .face--front {
  box-shadow: inset 0 0 0 3px var(--ring-active);
}

.card.is-matched .face--front {
  box-shadow: inset 0 0 0 3px var(--ring-matched);
}

.card.is-wrong .face--front {
  box-shadow: inset 0 0 0 3px var(--ring-wrong);
}

@keyframes shake {
  0%, 100% { transform: rotateY(180deg) translateX(0); }
  25% { transform: rotateY(180deg) translateX(-4px); }
  75% { transform: rotateY(180deg) translateX(4px); }
}

/* ---------- Modal ---------- */

.modal {
  position: fixed;
  inset: 0;
  background: rgba(16,21,27,.55);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 100;
}

.modal__card {
  background: var(--white);
  border-radius: 12px;
  border: 2px solid var(--border);
  padding: 32px;
  max-width: 360px;
  width: 100%;
  max-height: calc(100vh - 40px);
  overflow-y: auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

.modal__emoji { font-size: 40px; }
.modal__title { font-size: 20px; font-weight: 700; }

.modal__stats {
  display: flex;
  gap: 24px;
  margin: 8px 0;
}

.modal__stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.modal__record {
  font-size: 13px;
}

.modal__record-new {
  color: var(--ring-matched);
  font-weight: 700;
}

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

/* ---------- Classement (Top 10) ---------- */

.board-section {
  width: 100%;
  border-top: 2px solid var(--border);
  padding-top: 14px;
  margin-top: 2px;
}

.board-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 10px;
  text-align: left;
}

.board-heading h3 {
  font-size: 14px;
  font-weight: 700;
}

.board-heading span {
  font-size: 11px;
  color: var(--muted);
  font-weight: 600;
}

.board-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 100%;
}

.board-list .row {
  display: grid;
  grid-template-columns: 26px 1fr auto;
  align-items: center;
  gap: 10px;
  padding: 6px 8px;
  border-radius: 8px;
}

.board-list .rank {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  background: var(--grey-badge);
  color: var(--text);
}

.board-list .row:nth-child(1) .rank { background: var(--level-3); color: var(--white); }
.board-list .row:nth-child(2) .rank,
.board-list .row:nth-child(3) .rank { background: var(--level-1); color: var(--white); }

.board-list .name {
  text-align: left;
  font-weight: 600;
  font-size: 14px;
}

.board-list .score {
  font-size: 14px;
  font-weight: 700;
}

.board-list .row.you { background: rgba(2,154,219,.08); }
.board-list .row.you .rank { background: var(--level-1); color: var(--white); }

.you-form {
  display: flex;
  align-items: center;
  gap: 6px;
}

.you-form input {
  border: 2px solid var(--border);
  border-radius: 999px;
  padding: 4px 10px;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: 13px;
  width: 100%;
  min-width: 0;
  outline: none;
  color: var(--text);
}

.you-form input:focus { border-color: var(--level-1); }

.you-form button {
  min-height: 30px;
  padding: 0 12px;
  border-radius: 999px;
  border: 2px solid var(--level-1);
  background: var(--level-1);
  color: var(--white);
  font-weight: 700;
  font-size: 12px;
  cursor: pointer;
  font-family: inherit;
  flex-shrink: 0;
}

.you-form button:hover { filter: brightness(1.08); }
.you-form button:disabled { opacity: .6; cursor: default; }

.board-status {
  font-size: 12px;
  color: var(--muted);
  margin-top: 8px;
}

.modal__actions {
  display: flex;
  gap: 10px;
  margin-top: 8px;
}

/* ---------- Responsive ---------- */

@media (max-width: 680px) {
  .header {
    padding: 10px 14px;
    gap: 8px;
  }

  .header__title { font-size: 15px; }

  .levels {
    order: 3;
    width: 100%;
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 2px;
    gap: 8px;
  }

  .level-btn {
    flex-shrink: 0;
    white-space: nowrap;
    min-height: 36px;
    padding: 8px 12px;
    font-size: 13px;
  }

  /* Les pastilles Temps/Coups/Score se suffisent à elles-mêmes (format
     mm:ss, nombre, étoiles) : le libellé au-dessus reste accessible aux
     lecteurs d'écran mais n'occupe plus de place à l'écran. */
  .header__stats {
    gap: 6px;
    align-items: center;
  }

  .stat {
    flex-direction: row;
    align-items: center;
  }

  .stat__label {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }

  .stat__badge {
    padding: 4px 9px;
    font-size: 13px;
  }

  /* Le bouton "Nouvelle partie" devient une icône seule pour gagner de la
     place ; le libellé reste disponible pour les lecteurs d'écran via
     aria-label sur le bouton. */
  .btn { margin-top: 0; }

  .btn--primary {
    min-height: 36px;
    min-width: 36px;
    padding: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .btn--primary .btn__icon {
    display: inline-block;
    font-size: 17px;
    line-height: 1;
  }

  .btn--primary .btn__label { display: none; }

  .board { gap: 8px; }
}

@media (max-width: 420px) {
  .board { gap: 6px; }
  .header__title { font-size: 14px; }
}