:root{
  --cardSize: 88px;
  --gap: 12px;
  --radius: 18px;
}

*{ box-sizing:border-box; }
html,body{ height:100%; }

body{
  margin:0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}

.hidden{ display:none !important; }

/* MENU layout */
.menu{
  min-height: 100dvh;
  display:flex;
  align-items:center;
  justify-content:center;
  padding: 24px 16px;
  position: relative;
}

/* Langue */
.lang{
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 10;
}
.lang-btn{
  width: 44px;
  height: 44px;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  font-size: 18px;
}
.lang-list{
  margin-top: 8px;
  padding: 8px;
  border-radius: 14px;
  display:flex;
  flex-direction:column;
  gap: 6px;
}
.lang-list button{
  border: none;
  padding: 10px 12px;
  border-radius: 12px;
  cursor: pointer;
  text-align:left;
  white-space: nowrap;
}

.menu-card{
  width: min(520px, 100%);
  border-radius: 22px;
  padding: 18px 18px 16px;
  text-align:center;
}

.menu-logo{
  width: 124px;
  height: 124px;
  object-fit: contain;
  margin: 6px auto 10px;
  display:block;
}

.menu-title{
  margin: 0;
  font-size: 28px;
}

.menu-sub{
  margin: 8px 0 14px;
  opacity: .9;
}

.menu-actions{
  display:flex;
  gap: 10px;
  justify-content:center;
  flex-wrap: wrap;
}

.sep{
  margin: 16px 0 12px;
  border: none;
  height: 1px;
  opacity: .35;
}

.scores-title{
  margin: 0 0 10px;
}

.scores{
  display:flex;
  flex-direction:column;
  gap: 8px;
  text-align:left;
}

.score-row{
  display:flex;
  gap: 10px;
  align-items:center;
  justify-content: space-between;
  padding: 10px 12px;
  border-radius: 14px;
}

.score-row .left{
  display:flex;
  gap: 10px;
  align-items:center;
}

.score-row .lvl{
  font-weight: 700;
  width: 72px;
  text-align:left;
}

.score-row .best{
  opacity:.9;
}

.score-row .btn{
  padding: 8px 10px;
  border-radius: 12px;
  font-size: 14px;
}

.more-games{
  position: fixed;
  right: 14px;
  bottom: 14px;
  padding: 12px 14px;
  border-radius: 16px;
  text-decoration:none;
  font-weight: 600;
  z-index: 20;
}

/* GAME */
.game{
  min-height: 100dvh;
}

.topbar{
  position: sticky;
  top: 0;
  padding: 14px 16px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 12px;
}

.topbar-actions{
  display:flex;
  gap: 10px;
  align-items:center;
}

.btn.icon{
  width: 44px;
  padding: 10px 0;
  display:inline-flex;
  align-items:center;
  justify-content:center;
}

.title{
  font-weight: 800;
  font-size: 18px;
}

.sub{
  font-size: 13px;
  opacity: .9;
  margin-top: 4px;
}

.wrap{
  padding: 18px 16px 28px;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap: 14px;
}

.grid{
  display:grid;
  gap: var(--gap);
  justify-content:center;
  align-content:start;
  width: 100%;
}

.hint{
  text-align:center;
  font-size: 13px;
  opacity: .85;
  min-height: 18px;
}

/* cards */
.card{
  width: var(--cardSize);
  height: var(--cardSize);
  border-radius: var(--radius);
  border: none;
  cursor:pointer;
  position: relative;
  transform-style: preserve-3d;
  transition: transform .25s ease;
}

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

.face{
  position:absolute;
  inset:0;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius: var(--radius);
  backface-visibility: hidden;
  font-size: 34px;
  user-select:none;
}

.back{
  transform: rotateY(180deg);
}

.card.is-matched{
  cursor: default;
  opacity: .9;
  transform: rotateY(180deg) scale(.98);
}

/* buttons */
.btn{
  border: none;
  cursor: pointer;
  padding: 12px 14px;
  border-radius: 16px;
  font-weight: 700;
  font-size: 15px;
}

.btn.primary{
  font-weight: 800;
}

.btn.danger{
  font-weight: 800;
}

/* overlay */
.overlay{
  position: fixed;
  inset: 0;
  display:flex;
  align-items:center;
  justify-content:center;
  padding: 24px 16px;
  z-index: 50;
}

.overlay-card{
  width: min(420px, 100%);
  border-radius: 22px;
  padding: 18px 18px 16px;
  text-align:center;
}

.overlay-title{
  font-size: 44px;
  margin-bottom: 8px;
}

.overlay-body{
  display:flex;
  flex-direction:column;
  gap: 8px;
  margin-bottom: 14px;
  font-size: 18px;
  font-weight: 800;
}

.record{
  font-size: 14px;
  font-weight: 700;
  opacity: .9;
}

.overlay-actions{
  display:flex;
  gap: 10px;
  justify-content:center;
  flex-wrap: wrap;
}

/* orientation */
.rotate{
  position: fixed;
  inset: 0;
  display:flex;
  align-items:center;
  justify-content:center;
  padding: 24px 16px;
  z-index: 100;
}

.rotate-card{
  width: min(420px, 100%);
  border-radius: 22px;
  padding: 18px 18px 16px;
  text-align:center;
  font-size: 30px;
}
.rotate-card small{
  display:block;
  margin-top: 8px;
  opacity: .85;
  font-size: 14px;
}