:root {
  --bg: #0f172a;
  --panel: #111827;
  --card: #000;
  --accent: #dadada;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --danger: #000;
  --shadow: 0 10px 30px rgba(0, 0, 0, .35);
  --radius: 0px;
}

button.card {
    border: 0px;
}

dialog#winModal h2 {
    color: white;
}

.pexeso-app {
  width: min(1100px, 100%);
  margin: 0 auto;
  font-family: inherit;
  color: var(--text);
}

.pexeso-app header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.pexeso-app h1 {
  margin: 0;
  font-size: clamp(20px, 2.3vw, 28px);
}

.pexeso-app .btn {
  appearance: none;
  border: 0;
  border-radius: 0px;
  padding: 10px 14px;
  font-weight: 700;
  cursor: pointer;
}

.pexeso-app .btn {
  background: var(--accent);
  color: #052e25;
}

.pexeso-app .btn.secondary {
  background: #000;
  color: #d1d5db;
}

.pexeso-app .btn.danger {
  background: var(--danger);
  color: #fff;
}

.pexeso-app .stats {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.pexeso-app .stat {
  background: #000;
  border: 1px solid #000;
  padding: 8px 12px;
  border-radius: 0px;
  color: var(--muted);
}

.pexeso-app .stat b {
  color: var(--text);
}

.pexeso-app .board-wrap {
  background: #000;
  border: 1px solid #000;
  border-radius: var(--radius);
  padding: 16px;
}

.pexeso-app .board {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}

@media(max-width:920px) {
  .pexeso-app .board {
    grid-template-columns: repeat(6, 1fr);
  }
}

@media(max-width:640px) {
  .pexeso-app .board {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media(max-width:520px) {
  .pexeso-app .board {
    grid-template-columns: repeat(2, 1fr);
  }
}

.pexeso-app .card {
  aspect-ratio: 1/1;
  border-radius: 0px;
  position: relative;
  cursor: pointer;
  transform-style: preserve-3d;
  transition: transform .4s;
}

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

.pexeso-app .card.matched {
  outline: 2px solid var(--accent);
}

.pexeso-app .face {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  backface-visibility: hidden;
  border-radius: inherit;
}

.pexeso-app .face img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: inherit;
  pointer-events: none;
  user-select: none;
}

.pexeso-app .front {
  background: #0e172a;
}

.pexeso-app .back {
  transform: rotateY(180deg);
  background: #111827;
}

.pexeso-app dialog.modal {
  border: 0;
  border-radius: 0px;
  background: #000;
  color: var(--text);
  padding: 22px;
  width: min(460px, 92vw);
}

.pexeso-app dialog::backdrop {
  background: rgba(2, 6, 23, .6);
}