/*
 * Mind Snap — twilight-violet memory styling. The grid is the hero; tiles
 * light up like stars during the flash and cool to picked embers on recall.
 */

:root {
  --bg0: #12080f;
  --bg1: #1c0f26;
  --ink: #f5f1fa;
  --dim: rgba(245, 241, 250, 0.62);
  --faint: rgba(245, 241, 250, 0.4);
  --card: rgba(255, 255, 255, 0.05);
  --line: rgba(255, 255, 255, 0.1);
  --line-hi: rgba(255, 255, 255, 0.22);
  --violet: #8b5cf6;
  --violet-hi: #a78bfa;
  --magenta: #e879f9;
  --gold: #ffc432;
  --green: #34d399;
  --red: #ff4757;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family:
    -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(900px 600px at 85% -10%, rgba(139, 92, 246, 0.2), transparent 60%),
    radial-gradient(700px 500px at -10% 50%, rgba(232, 121, 249, 0.1), transparent 55%),
    linear-gradient(180deg, var(--bg0), var(--bg1) 60%, var(--bg0));
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100svh;
  overscroll-behavior: none;
  -webkit-font-smoothing: antialiased;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--violet);
  color: #fff;
  padding: 10px 16px;
  z-index: 50;
}
.skip-link:focus {
  left: 0;
}

.noscript-card {
  max-width: 420px;
  margin: 18vh auto 0;
  padding: 22px;
  background: var(--card);
  border: 1px solid var(--line-hi);
  border-radius: 16px;
  line-height: 1.55;
}
.noscript-card a {
  color: var(--violet-hi);
}
.noscript-title {
  margin-top: 0;
}

.hidden {
  display: none !important;
}

.mini-header {
  width: 100%;
  max-width: 640px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 4px 10px;
  padding: 14px 16px 6px;
}
.brand-link {
  color: var(--ink);
  text-decoration: none;
  font-weight: 800;
  padding: 12px 0;
}
.brand-link .accent {
  color: var(--magenta);
}
.mini-header-right {
  display: flex;
  align-items: center;
  gap: 8px;
}
.more-games {
  color: var(--dim);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 700;
  white-space: nowrap;
  padding: 14px 0;
}
.more-games:hover {
  color: var(--violet-hi);
}

.chip-btn {
  min-height: 44px;
  min-width: 44px;
  padding: 0 13px;
  border: 1px solid var(--line-hi);
  border-radius: 99px;
  background: var(--card);
  color: var(--dim);
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  touch-action: manipulation;
}

.screen {
  width: 100%;
  max-width: 640px;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: calc(100svh - 60px);
}

.screen-inner {
  width: 100%;
  max-width: 460px;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 8vh 16px 0;
}

.game-title {
  margin: 0 0 6px;
  font-size: clamp(2.2rem, 9vw, 3.2rem);
  font-weight: 900;
  text-align: center;
}
.game-title .accent {
  color: var(--magenta);
  text-shadow: 0 0 30px rgba(232, 121, 249, 0.4);
}
.hook-line {
  margin: 0 0 24px;
  color: var(--dim);
  font-weight: 600;
  text-align: center;
}

.best-card {
  width: 100%;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 22px;
}
.best-card > div {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px 8px;
  text-align: center;
}
.best-card span {
  display: block;
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--faint);
  margin-bottom: 4px;
}
.best-card b {
  font-size: 1.15rem;
  font-weight: 900;
  font-variant-numeric: tabular-nums;
  color: var(--violet-hi);
}

.btn-primary {
  min-height: 58px;
  padding: 0 60px;
  border: none;
  border-radius: 16px;
  font-size: 1.25rem;
  font-weight: 900;
  letter-spacing: 0.04em;
  color: #fff;
  background: linear-gradient(135deg, var(--violet), var(--magenta));
  box-shadow: 0 10px 30px rgba(139, 92, 246, 0.4);
  cursor: pointer;
  touch-action: manipulation;
}
.btn-primary:active {
  transform: scale(0.97);
}
.btn-ghost {
  margin-top: 12px;
  min-height: 48px;
  padding: 0 30px;
  border: 1px solid var(--line-hi);
  border-radius: 13px;
  background: transparent;
  color: var(--dim);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
}
.hint-line {
  margin-top: 18px;
  color: var(--faint);
  font-size: 0.8rem;
  text-align: center;
  padding: 0 16px;
}

/* ---------- game screen ---------- */

.game-top {
  width: 100%;
  max-width: 540px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  padding: calc(env(safe-area-inset-top) + 12px) 0 6px;
}
.top-spacer {
  width: 44px;
}
.hud {
  display: flex;
  gap: 8px;
}
.hud-item {
  min-width: 70px;
  text-align: center;
  padding: 7px 10px;
  border-radius: 12px;
  background: var(--card);
  border: 1px solid var(--line-hi);
}
.hud-item span {
  display: block;
  font-size: 0.6rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--faint);
}
.hud-item b {
  font-size: 0.95rem;
  font-weight: 900;
  font-variant-numeric: tabular-nums;
}

.phase-msg {
  min-height: 1.5em;
  margin: 14px 0 10px;
  font-weight: 800;
  font-size: 1.02rem;
  color: var(--violet-hi);
  text-align: center;
  padding: 0 16px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(var(--n, 3), 1fr);
  gap: clamp(6px, 1.8vw, 12px);
  width: min(88vw, 60vh, 460px);
  aspect-ratio: 1;
  margin: 0 auto;
}
.cell {
  border: 1.5px solid var(--line);
  border-radius: clamp(8px, 2vw, 14px);
  background: rgba(255, 255, 255, 0.03);
  cursor: pointer;
  touch-action: manipulation;
  transition:
    background 0.15s ease-out,
    box-shadow 0.15s ease-out,
    transform 0.1s ease-out;
}
.cell.lit {
  background: radial-gradient(circle at 35% 30%, var(--violet-hi), var(--violet));
  box-shadow:
    0 0 18px rgba(139, 92, 246, 0.7),
    inset 0 1px 0 rgba(255, 255, 255, 0.35);
  border-color: transparent;
}
.cell.picked {
  background: rgba(232, 121, 249, 0.22);
  border-color: var(--magenta);
}
.cell.wrong {
  background: rgba(255, 71, 87, 0.25);
  border-color: var(--red);
  animation: shake 0.4s ease-out;
}
@keyframes shake {
  20%,
  60% {
    translate: -5px 0;
  }
  40%,
  80% {
    translate: 5px 0;
  }
}

.under-hud {
  min-height: 2em;
  display: grid;
  place-items: center;
  padding: 10px 0;
}
.combo {
  font-weight: 900;
  color: var(--gold);
  font-size: 1.05rem;
  animation: comboPop 0.25s ease-out;
}
@keyframes comboPop {
  from {
    transform: scale(1.4);
  }
}

/* ---------- end banner ---------- */

.end-banner {
  position: fixed;
  inset: 0;
  z-index: 35;
  display: grid;
  place-items: center;
  background: rgba(18, 8, 15, 0.78);
  backdrop-filter: blur(6px);
}
.end-inner {
  width: min(88vw, 340px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 28px 24px;
  background: linear-gradient(170deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.03));
  border: 1px solid var(--line-hi);
  border-radius: 22px;
  text-align: center;
}
.end-emoji {
  font-size: 2.4rem;
}
.end-title {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 900;
  letter-spacing: 0.04em;
}
.end-line {
  margin: 0 0 6px;
  color: var(--dim);
  font-weight: 600;
}
.end-best {
  margin: 0 0 6px;
  font-weight: 900;
  letter-spacing: 0.14em;
  font-size: 0.85rem;
  background: linear-gradient(90deg, var(--gold), #fff2c4, var(--gold));
  padding: 4px 14px;
  border-radius: 99px;
  color: #3a2200;
}
.end-inner .btn-primary {
  width: 100%;
  padding: 0;
}
.end-inner .btn-ghost {
  width: 100%;
}

button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--magenta);
  outline-offset: 2px;
}

@media (max-width: 380px) {
  .hud-item {
    min-width: 60px;
    padding: 6px 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .cell {
    transition: none;
  }
  .cell.wrong,
  .combo,
  .end-inner {
    animation: none;
  }
}