:root {
  --bg: #0b0b0b;
  --fg: #f2f2f2;
  --muted: #bdbdbd;
  --accent: #7cfc00; /* verde fosforito */
  --card: #111;
  --card2: #0f0f0f;
  --line: #2a2a2a;
  --shadow: 0 12px 0 rgba(0, 0, 0, 0.35);
  --radius: 18px;
}

* {
  box-sizing: border-box;
}
html,
body {
  height: 100%;
  font-size: 12px;
  line-height: 1.4;
}

body {
  margin: 0;
  background: radial-gradient(1200px 600px at 20% 0%, #131313, var(--bg));
  color: var(--fg);
  font-family: "Press Start 2P", monospace;
  letter-spacing: 0.2px;
  font-size: 12px;
  line-height: 1.4;
}

.wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 12px 12px 16px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.top {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 18px;
  align-items: start;
}

.brand h1 {
  margin: 0 0 8px;
  font-size: clamp(28px, 4vw, 44px);
  letter-spacing: 1px;
}

.sub {
  margin: 0;
  color: var(--muted);
  line-height: 1.35;
}

.panel {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--card), var(--card2));
  border-radius: var(--radius);
  padding: 14px;
  box-shadow: var(--shadow);
}

.controls {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 10px;
  align-items: end;
  margin-bottom: 12px;
}

.select span {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 6px;
}

select {
  width: 100%;
  border: 1px solid var(--line);
  background: #0e0e0e;
  color: var(--fg);
  padding: 10px 12px;
  border-radius: 12px;
  outline: none;
}

.btn {
  border: 1px solid var(--line);
  background: #0e0e0e;
  color: var(--fg);
  padding: 10px 14px;
  border-radius: 12px;
  cursor: pointer;
  transition:
    transform 0.06s ease,
    border-color 0.2s ease;
}

.btn:hover {
  border-color: var(--accent);
}
.btn:active {
  transform: translateY(1px);
}

.btn.ghost {
  color: var(--accent);
  border-color: #2e3a2e;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.stat {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 10px 10px 8px;
  background: #0c0c0c;
}

.k {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 6px;
}

.v {
  font-size: 18px;
  color: var(--fg);
}

.board-wrap {
  margin-top: 10px;
  display: flex;
  flex-direction: column-reverse;
}

.board {
  display: grid;
  gap: 10px;
  user-select: none;

  align-content: center;
  justify-content: center;

  width: fit-content;
  margin: 0 auto;

  max-height: calc(100vh - 260px);
}
.card {
  position: relative;
  width: 105px;
  aspect-ratio: 1 / 1;
  border-radius: 16px;
  perspective: 900px;
  outline: none;
}

.card button {
  all: unset;
  width: 100%;
  height: 100%;
  cursor: pointer;
  display: block;
}

.face {
  position: absolute;
  inset: 0;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: #0d0d0d;
  display: grid;
  place-items: center;
  box-shadow: 0 10px 0 rgba(0, 0, 0, 0.25);
  backface-visibility: hidden;
  transform-style: preserve-3d;
  transition: transform 220ms ease;
}

/* Dorso (cerrada) */
.back {
  background: linear-gradient(180deg, #111, #0a0a0a);
}

.back .mark {
  font-size: 60px;
  color: var(--muted);
  letter-spacing: 2px;
  transform: scale(0.45);
}

/* Frente (abierta) */
.front {
  transform: rotateY(180deg);
  background: linear-gradient(180deg, #101010, #0b0b0b);
}
.glyph {
  width: 55%;
  height: 55%;
  filter: invert(1);
  color: var(--fg);
}

.card.is-flipped .back {
  transform: rotateY(180deg);
}
.card.is-flipped .front {
  transform: rotateY(0deg);
}

.card.is-matched .front {
  border-color: #2e3a2e;
}

.card.is-matched .glyph {
  filter: brightness(0) saturate(100%) invert(72%) sepia(98%) saturate(1200%)
    hue-rotate(55deg) brightness(1.05);
}

.toast {
  margin-top: 14px;
  min-height: 22px;
  color: var(--accent);
  font-size: 13px;
}

@media (max-width: 860px) {
  .top {
    grid-template-columns: 1fr;
  }
  .wrap {
    padding: 8px 8px 12px;
  }

  .top {
    gap: 10px;
  }

  .panel {
    padding: 10px;
  }

  .controls {
    gap: 8px;
    margin-bottom: 8px;
  }

  .stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }

  .board {
    gap: 6px;
    max-height: calc(100vh - 320px);
  }

  .card {
    width: min(20vw, 72px);
  }
  .stats {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Permite que el click atraviese las caras y llegue al botón */
.face {
  pointer-events: none;
}

/* ===== CRT MODE ===== */
body.crt {
  /* un pelín más de contraste */
  filter: contrast(1.1);
}

body.crt::before,
body.crt::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
}

/* Scanlines */
body.crt::before {
  background: repeating-linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0) 0px,
    rgba(0, 0, 0, 0) 2px,
    rgba(0, 0, 0, 0.18) 3px
  );
  mix-blend-mode: multiply;
  opacity: 0.7;
}

/* Glow + viñeta + un pelín de "fósforo" */
body.crt::after {
  background:
    radial-gradient(
      circle at 50% 45%,
      rgba(124, 252, 0, 0.08),
      transparent 60%
    ),
    radial-gradient(
      circle at 50% 50%,
      transparent 55%,
      rgba(0, 0, 0, 0.55) 100%
    );
  mix-blend-mode: screen;
  opacity: 0.85;
}

/* Curvatura/warp fake */
body.crt .wrap {
  transform: perspective(1200px) rotateX(1.2deg);
}

/* Sutil “flicker” */
@keyframes crtFlicker {
  0% {
    opacity: 0.9;
  }
  50% {
    opacity: 0.75;
  }
  100% {
    opacity: 0.9;
  }
}
body.crt::after {
  animation: crtFlicker 3.2s infinite;
}

/* Un pelín de suavizado para que parezca pantalla */
body.crt .panel,
body.crt .board,
body.crt .stat {
  box-shadow: 0 0 22px rgba(124, 252, 0, 0.06);
}

/* Opcional: ligera “vibración” del tablero */
@keyframes crtJitter {
  0% {
    transform: translate(0, 0);
  }
  20% {
    transform: translate(0.2px, -0.2px);
  }
  40% {
    transform: translate(-0.2px, 0.2px);
  }
  60% {
    transform: translate(0.2px, 0.2px);
  }
  80% {
    transform: translate(-0.2px, -0.2px);
  }
  100% {
    transform: translate(0, 0);
  }
}
body.crt .board {
  animation: crtJitter 6s infinite;
}