/* Memorama de Los Cuñados */

:root {
  --neg: #02141d;
  --mar: #022b4a;
  --tur: #04b5f8;
  --cian: #5ee7ff;
  --deep: #003d5c;
  --bla: #fdfdfb;
  --wa: #25d366;
  --board-max: min(96vw, 680px);
  --radius: 14px;
  --font: "Poppins", system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  font-family: var(--font);
  color: var(--bla);
  background: var(--neg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

.skip {
  position: absolute; left: -999px; top: 0;
}
.skip:focus {
  left: 12px; top: 12px; z-index: 200; background: var(--bla); color: var(--neg);
  padding: 8px 12px; border-radius: 8px;
}

/* Fondo oceánico */
.ocean-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  background: linear-gradient(180deg, #0ec5e8 0%, #0288d1 28%, #01579b 55%, #02141d 100%);
  overflow: hidden;
}
.ocean-bg__rays {
  position: absolute;
  inset: -20% 0 0;
  background:
    conic-gradient(from 200deg at 50% -10%, rgba(255,255,255,0.35), transparent 40%),
    linear-gradient(180deg, rgba(255,255,255,0.2) 0%, transparent 45%);
  animation: rays-drift 12s ease-in-out infinite alternate;
  opacity: 0.7;
}
@keyframes rays-drift {
  from { transform: translateX(-2%) scale(1); }
  to { transform: translateX(2%) scale(1.02); }
}
.ocean-bg__silhouettes {
  position: absolute;
  inset: 0;
  background:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 400 120'%3E%3Cpath fill='%2302141d' opacity='.85' d='M0 80 Q50 60 100 75 T200 70 T300 78 T400 65 V120 H0Z'/%3E%3C/svg%3E") bottom center / 100% auto no-repeat,
    radial-gradient(ellipse 8px 5px at 15% 40%, rgba(2,20,29,.4), transparent),
    radial-gradient(ellipse 6px 4px at 85% 35%, rgba(2,20,29,.35), transparent);
  pointer-events: none;
}
.bubbles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}
.bubble {
  position: absolute;
  bottom: -20px;
  width: var(--sz, 8px);
  height: var(--sz, 8px);
  border-radius: 50%;
  background: rgba(255,255,255,0.25);
  border: 1px solid rgba(255,255,255,0.35);
  animation: rise var(--dur, 8s) linear infinite;
  animation-delay: var(--delay, 0s);
  left: var(--x, 50%);
}
@keyframes rise {
  to { transform: translateY(-110vh) translateX(12px); opacity: 0; }
}

.app {
  position: relative;
  z-index: 1;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: max(12px, env(safe-area-inset-top)) 16px max(20px, env(safe-area-inset-bottom));
}

.screen {
  display: none;
  width: min(100%, 720px);
  flex-direction: column;
  align-items: center;
  gap: 16px;
  animation: screen-in 0.45s ease;
}
.screen.is-active { display: flex; }
.screen[hidden] { display: none !important; }
@keyframes screen-in {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: none; }
}

/* Menú */
.menu-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  width: 100%;
}
.menu-back {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 4px;
  padding: 0.55em 1.1em;
  color: var(--bla);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.92rem;
  letter-spacing: 0.02em;
  border-radius: 999px;
  border: 2px solid rgba(255, 255, 255, 0.85);
  background: rgba(2, 20, 29, 0.45);
  box-shadow:
    0 4px 14px rgba(0, 0, 0, 0.25),
    inset 0 1px 0 rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease, transform 0.15s ease;
}
.menu-back:hover {
  color: var(--cian);
  border-color: var(--cian);
  background: rgba(2, 20, 29, 0.62);
  transform: translateY(-1px);
}
.menu-back:focus-visible {
  outline: 3px solid var(--cian);
  outline-offset: 3px;
}
.menu-logo {
  display: block;
  width: min(92vw, 220px);
  height: auto;
  max-height: none;
  object-fit: contain;
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.35));
}
.menu-title {
  margin: 0;
  font-size: clamp(1.5rem, 5vw, 2rem);
  font-weight: 800;
  text-align: center;
  text-shadow: 0 2px 8px rgba(0,0,0,0.35);
}
.menu-sub {
  margin: 0;
  font-size: 1.05rem;
  opacity: 0.92;
  text-align: center;
}

.difficulty {
  border: 2px solid rgba(255,255,255,0.25);
  border-radius: var(--radius);
  padding: 12px 16px;
  width: 100%;
  max-width: 360px;
  background: rgba(2,20,29,0.45);
  backdrop-filter: blur(8px);
}
.difficulty__legend {
  font-weight: 700;
  padding: 0 4px 8px;
}
.difficulty__opt {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 4px;
  cursor: pointer;
  font-weight: 600;
}
.difficulty__opt span {
  font-size: 0.78rem;
  font-weight: 500;
  opacity: 0.75;
}

.record-line {
  font-size: 0.88rem;
  opacity: 0.9;
  text-align: center;
  margin: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0.85em 1.6em;
  border-radius: 999px;
  border: 2px solid transparent;
  font-family: inherit;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s;
}
.btn:focus-visible { outline: 3px solid var(--cian); outline-offset: 3px; }
.btn-play {
  background: linear-gradient(180deg, #ff5252, #d32f2f);
  color: var(--bla);
  font-size: 1.15rem;
  padding: 1em 2.2em;
  box-shadow: 0 8px 24px rgba(211,47,47,0.45);
  width: min(100%, 280px);
}
.btn-play:hover { transform: translateY(-2px); }
.btn-ghost {
  background: rgba(255,255,255,0.12);
  color: var(--bla);
  border-color: rgba(255,255,255,0.35);
}
.btn-wa { background: var(--wa); color: var(--bla); }

/* HUD */
.screen--game {
  width: min(100%, 900px);
  align-self: stretch;
}
.game-hud {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 8px 12px;
  align-items: center;
  width: 100%;
}
.hud-pill {
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 999px;
  padding: 6px 14px;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 72px;
}
.hud-timer .hud-value {
  font-size: 1.35rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}
.hud-label { font-size: 0.65rem; text-transform: uppercase; letter-spacing: 0.06em; opacity: 0.85; }
.hud-value { font-weight: 700; font-size: 0.95rem; }
.hud-stats { display: flex; gap: 8px; }
.hud-actions { display: flex; gap: 6px; }
.icon-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.3);
  background: rgba(2,20,29,0.5);
  color: var(--bla);
  font-size: 1.1rem;
  cursor: pointer;
}
.icon-btn:focus-visible { outline: 3px solid var(--cian); }

.board-wrap {
  width: 100%;
  display: flex;
  justify-content: center;
  padding: 10px 0 4px;
}
.board-shell {
  width: 100%;
  max-width: var(--board-max);
  padding: clamp(12px, 2.5vw, 20px);
  border-radius: 20px;
  background: rgba(2, 20, 29, 0.42);
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow:
    0 24px 48px rgba(0, 0, 0, 0.28),
    inset 0 1px 0 rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(10px);
}
.board {
  display: grid;
  gap: clamp(8px, 2vw, 12px);
  width: 100%;
  margin: 0 auto;
}
.board--easy,
.board--normal {
  grid-template-columns: repeat(4, minmax(76px, 1fr));
  max-width: 560px;
}
.board--hard {
  grid-template-columns: repeat(6, minmax(64px, 1fr));
  max-width: var(--board-max);
}

@media (max-width: 640px) {
  .board--hard { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
@media (max-width: 520px) {
  .game-hud { grid-template-columns: 1fr 1fr; }
  .hud-actions { grid-column: 1 / -1; justify-content: center; }
}

/* Cartas */
.card {
  display: block;
  width: 100%;
  margin: 0;
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
  border-radius: var(--radius);
  -webkit-tap-highlight-color: transparent;
  appearance: none;
  -webkit-appearance: none;
  font: inherit;
  color: inherit;
}
.card:disabled { cursor: default; opacity: 0.92; }

.card-frame {
  display: block;
  width: 100%;
  aspect-ratio: 3 / 4;
  min-height: 100px;
  position: relative;
  perspective: 1100px;
  -webkit-perspective: 1100px;
  border-radius: var(--radius);
}
.card:not(:disabled):hover .card-inner {
  transform: translateY(-3px);
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.38);
}
.card-inner {
  position: absolute;
  inset: 0;
  transform-style: preserve-3d;
  -webkit-transform-style: preserve-3d;
  transition: transform 0.55s cubic-bezier(0.4, 0.2, 0.2, 1), box-shadow 0.2s ease;
  border-radius: var(--radius);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.32);
  transform: rotateY(0deg);
}
.card.is-flipped .card-inner { transform: rotateY(180deg); }
.card.is-flipped:not(:disabled):hover .card-inner { transform: rotateY(180deg) translateY(-3px); }
.card.is-matched .card-inner {
  box-shadow: 0 0 0 3px var(--cian), 0 10px 28px rgba(4, 181, 248, 0.45);
}
.card.is-shake .card-inner { animation: shake 0.45s ease; }
@keyframes shake {
  0%, 100% { transform: rotateY(180deg) translateX(0); }
  25% { transform: rotateY(180deg) translateX(-5px); }
  75% { transform: rotateY(180deg) translateX(5px); }
}

.card-face {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: var(--radius);
  overflow: hidden;
}
.card-back {
  z-index: 2;
  transform: rotateY(0deg);
  background:
    linear-gradient(145deg, #4fc3f7 0%, #0288d1 45%, #01579b 100%);
  border: 3px solid rgba(255, 255, 255, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
}
.card-back__emoji {
  position: absolute;
  font-size: clamp(1.75rem, 8vw, 2.75rem);
  line-height: 1;
  opacity: 0.35;
  z-index: 0;
}
.card-back__shine {
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(
      -12deg,
      transparent 0,
      transparent 10px,
      rgba(255, 255, 255, 0.08) 10px,
      rgba(255, 255, 255, 0.08) 20px
    );
  animation: wave-shift 4s linear infinite;
}
@keyframes wave-shift {
  from { background-position: 0 0; }
  to { background-position: 40px 0; }
}
.card-back__mark {
  position: relative;
  z-index: 1;
  width: min(62%, 80px);
  height: auto;
  max-height: none;
  aspect-ratio: auto;
  object-fit: contain;
  filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.35));
  opacity: 0.95;
  animation: mark-float 3s ease-in-out infinite;
}
@keyframes mark-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}

.card-front {
  transform: rotateY(180deg);
  background: linear-gradient(180deg, #ffffff 0%, #e3f2fd 100%);
  border: 3px solid #fff;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  padding: 6px 6px 4px;
  gap: 4px;
  z-index: 1;
}
.card-art {
  position: relative;
  flex: 1 1 auto;
  min-height: 65%;
  width: 100%;
  border-radius: 10px;
  overflow: hidden;
  background-color: #b3e5fc;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
.card-art__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  animation: art-bob 2.8s ease-in-out infinite;
  transform-origin: center bottom;
}
.card.is-matched .card-art__img {
  animation: art-celebrate 1.2s ease-in-out infinite;
}
@keyframes art-bob {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-3px) scale(1.03); }
}
@keyframes art-celebrate {
  0%, 100% { transform: scale(1) rotate(0deg); }
  25% { transform: scale(1.06) rotate(-2deg); }
  75% { transform: scale(1.06) rotate(2deg); }
}
.card-front__label {
  font-size: clamp(0.55rem, 2.2vw, 0.72rem);
  font-weight: 700;
  text-align: center;
  color: var(--mar);
  line-height: 1.15;
  padding: 0 2px 2px;
}

.pause-overlay {
  position: fixed;
  inset: 0;
  z-index: 50;
  background: rgba(2,20,29,0.75);
  backdrop-filter: blur(6px);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
}
.pause-overlay:not([hidden]) {
  display: flex;
}
.pause-overlay[hidden] {
  display: none !important;
}
.pause-title { font-size: 1.8rem; font-weight: 800; margin: 0; }

/* Resultados */
.screen--result {
  text-align: center;
  padding: 12px;
}
.result-logo {
  display: block;
  width: min(88vw, 200px);
  height: auto;
  margin: 0 auto 8px;
  object-fit: contain;
}
.result-title {
  font-size: clamp(1.25rem, 4vw, 1.65rem);
  margin: 0 0 12px;
  line-height: 1.25;
}
.result-sub { margin: 0 0 16px; opacity: 0.9; }
.result-stats {
  list-style: none;
  padding: 0;
  margin: 0 0 12px;
  font-size: 0.95rem;
}
.result-stats li { margin: 4px 0; }
.result-score { font-size: 1.2rem; margin: 0 0 8px; }
.result-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin: 16px 0;
}

.promo {
  width: 100%;
  max-width: 420px;
  background: rgba(2,20,29,0.55);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius);
  padding: 16px;
  text-align: left;
  font-size: 0.9rem;
}
.promo-lead { margin: 0 0 10px; font-weight: 600; }
.promo-list { margin: 0 0 12px; padding-left: 1.2em; }
.promo-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.promo--compact { text-align: center; }

.settings-dialog {
  border: none;
  border-radius: var(--radius);
  padding: 0;
  max-width: 320px;
  width: min(92vw, 320px);
  font-family: var(--font);
  color: var(--neg);
  overflow: hidden;
}
.settings-dialog::backdrop { background: rgba(0,0,0,0.5); }
.settings-dialog__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 16px 8px;
  border-bottom: 1px solid var(--line);
}
.settings-dialog__head h3 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--neg);
}
.settings-dialog__close {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  margin: -4px -4px 0 0;
  padding: 0;
  border: 2px solid var(--line);
  border-radius: 50%;
  background: var(--bla);
  color: var(--neg);
  font-size: 1.5rem;
  line-height: 1;
  font-weight: 400;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}
.settings-dialog__close:hover {
  background: var(--gris);
  border-color: var(--mar);
  color: var(--mar);
}
.settings-dialog__close:focus-visible {
  outline: 3px solid var(--tur);
  outline-offset: 2px;
}
.settings-row {
  display: flex;
  gap: 10px;
  margin: 12px 16px;
  font-weight: 600;
  color: var(--txt);
}
.btn-settings-done {
  display: block;
  width: calc(100% - 32px);
  margin: 8px 16px 16px;
  padding: 0.75em 1em;
  border-radius: 999px;
  border: 2px solid var(--mar);
  background: var(--mar);
  color: var(--bla);
  font-family: inherit;
  font-weight: 700;
  cursor: pointer;
}
.btn-settings-done:hover { background: #034a7a; }
.btn-settings-done:focus-visible {
  outline: 3px solid var(--tur);
  outline-offset: 2px;
}

.celebration {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 100;
  overflow: hidden;
}
.celebration.is-on .confetti {
  position: absolute;
  width: 8px;
  height: 8px;
  animation: confetti-fall 2.5s ease-out forwards;
}
@keyframes confetti-fall {
  to { transform: translateY(100vh) rotate(720deg); opacity: 0; }
}

.pair-burst {
  position: fixed;
  pointer-events: none;
  z-index: 60;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255,255,255,0.7);
  animation: burst 0.7s ease-out forwards;
}
@keyframes burst {
  to { transform: translate(var(--tx), var(--ty)) scale(0); opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .ocean-bg__rays { animation: none; }
  .bubble { display: none; }
}

body.reduce-motion .card-inner { transition-duration: 0.15s; }
body.reduce-motion .card-art__img,
body.reduce-motion .card-back__mark,
body.reduce-motion .card-back__shine { animation: none !important; }
body.reduce-motion .ocean-bg__rays,
body.reduce-motion .bubble { display: none; }

/* Fallback si el volteo 3D falla en el navegador */
html.flip-simple .card-inner { transform: none !important; }
html.flip-simple .card-face { backface-visibility: visible; -webkit-backface-visibility: visible; }
html.flip-simple .card-front {
  transform: none;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s ease;
}
html.flip-simple .card-back {
  transform: none;
  opacity: 1;
  transition: opacity 0.35s ease;
}
html.flip-simple .card.is-flipped .card-back { opacity: 0; }
html.flip-simple .card.is-flipped .card-front {
  opacity: 1;
  pointer-events: auto;
  z-index: 3;
}
html.flip-simple .card.is-shake .card-inner { animation: shake-simple 0.45s ease; }
@keyframes shake-simple {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  75% { transform: translateX(5px); }
}