/* =========================================================
   ColiMem – Memory-Spiel
   ========================================================= */

.game-stats {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
  margin: 0 0 18px;
}

.stat-tile {
  background: var(--weiss);
  border: 2px solid var(--blau);
  border-radius: 12px;
  padding: 8px 16px;
  text-align: center;
  min-width: 84px;
  box-shadow: 3px 3px 8px rgba(0,0,0,0.12);
}

.stat-tile .stat-label {
  display: block;
  font-size: 0.7rem;
  color: var(--blau-mittel);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.stat-tile .stat-value {
  display: block;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--blau-dunkel);
}

.game-controls {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 20px;
}

.game-controls button,
.name-entry button {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--weiss);
  background: linear-gradient(180deg, #5555ff, #0000aa);
  border: 2px solid #ddddff;
  border-radius: 10px;
  padding: 9px 16px;
  cursor: pointer;
  box-shadow: 3px 3px 6px rgba(0,0,0,0.2);
  transition: background 0.15s ease, transform 0.1s ease;
}

.game-controls button:hover,
.game-controls button:focus-visible,
.name-entry button:hover,
.name-entry button:focus-visible {
  background: linear-gradient(180deg, #00cc00, #009900);
  transform: translateY(-1px);
}

.game-controls button[aria-pressed="true"] {
  background: linear-gradient(180deg, #ffb800, #ff8a00);
}

.memory-board {
  position: relative;
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 8px;
  max-width: 620px;
  margin: 0 auto;
}

.memory-card {
  aspect-ratio: 1 / 1;
  perspective: 600px;
  cursor: pointer;
}

.memory-card.is-matched { cursor: default; }

.card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.45s;
  transform-style: preserve-3d;
}

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

.card-face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: 8px;
  overflow: hidden;
  border: 2px solid var(--blau);
  box-shadow: 2px 2px 5px rgba(0,0,0,0.18);
  transition: opacity 0.15s linear;
}

.card-back {
  background:
    repeating-linear-gradient(45deg, #5555ff 0 10px, #3333dd 10px 20px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 1;
}

.card-back span {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(1rem, 4vw, 1.6rem);
  color: #fff9;
}

.card-front {
  transform: rotateY(180deg);
  background: var(--weiss);
  /* Harte Absicherung: unabhängig davon, ob 3D-Transforms/backface-visibility
     im Browser sauber unterstützt werden, bleibt die Bildseite verdeckt,
     bis die Karte tatsächlich als "aufgedeckt" markiert ist. */
  opacity: 0;
}

.memory-card.is-flipped .card-front,
.memory-card.is-matched .card-front {
  opacity: 1;
}

.memory-card.is-flipped .card-back,
.memory-card.is-matched .card-back {
  opacity: 0;
}

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

.memory-card.is-matched .card-face {
  border-color: #00aa00;
  box-shadow: 0 0 10px rgba(0,170,0,0.5);
}

.pause-overlay {
  position: absolute;
  inset: 0;
  background: rgba(245, 223, 0, 0.95);
  border: 4px solid var(--blau);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  z-index: 5;
}

.pause-overlay[hidden] { display: none; }

.pause-overlay p {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--blau-mittel);
  margin: 0;
}

.game-end {
  text-align: center;
  background: var(--gelb-zitat);
  border: 2px solid var(--blau);
  border-radius: 12px;
  box-shadow: var(--schatten);
  padding: 20px;
  margin: 18px 0;
}

.game-end[hidden] { display: none; }

.game-end h3 { margin-top: 0; color: var(--blau-mittel); }

.name-entry {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 14px;
}

.name-entry[hidden] { display: none; }

.name-entry input {
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 8px 12px;
  border: 2px solid var(--blau);
  border-radius: 8px;
  max-width: 220px;
}

.highscore-list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: rank;
}

.highscore-list li {
  counter-increment: rank;
  display: flex;
  justify-content: space-between;
  gap: 8px;
  padding: 5px 0;
  border-bottom: 1px dashed #b7b7e6;
  font-size: 0.9rem;
}

.highscore-list li::before {
  content: counter(rank) ".";
  font-weight: 700;
  color: var(--blau-mittel);
  margin-right: 6px;
}

.highscore-list li.is-empty {
  color: #8888aa;
  font-style: italic;
}

.highscore-name { flex: 1; text-align: left; }
.highscore-score { font-weight: 700; }

@media (max-width: 700px) {
  .memory-board { grid-template-columns: repeat(4, 1fr); gap: 6px; }
}