:root {
  --bg-deep: #0a0e14;
  --bg-panel: #121a24;
  --border: #2a3f55;
  --accent: #ff6b2c;
  --accent-glow: rgba(255, 107, 44, 0.45);
  --gold: #ffd54a;
  --gold-dim: #c9a227;
  --text: #e8eef5;
  --muted: #7a8fa3;
  --mine: #e63946;
  --cell-hidden: #1a2636;
  --cell-open: #0f1822;
  --radius: 12px;
  --font-display: "Orbitron", sans-serif;
  --font-ui: "Rajdhani", system-ui, sans-serif;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-x: max(12px, env(safe-area-inset-left, 0px), env(safe-area-inset-right, 0px));
  --content-max: min(100%, 440px);
  --cell-gap: clamp(3px, 0.9vmin, 7px);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-tap-highlight-color: transparent;
}

body {
  margin: 0;
  min-height: 100dvh;
  min-height: -webkit-fill-available;
  font-family: var(--font-ui);
  color: var(--text);
  background: radial-gradient(ellipse 120% 80% at 50% -20%, #1a2840 0%, var(--bg-deep) 55%);
  position: relative;
  overflow-x: hidden;
}

body.phase-game {
  height: 100dvh;
  max-height: 100dvh;
  overflow: hidden;
}

.bg-noise {
  position: fixed;
  inset: 0;
  opacity: 0.04;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  z-index: 0;
}

.scanlines {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.03) 2px,
    rgba(0, 0, 0, 0.03) 4px
  );
  z-index: 1;
}

/* ——— Intro ——— */
.intro-screen {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(1rem + var(--safe-top)) var(--safe-x) calc(1rem + var(--safe-bottom));
  background: radial-gradient(ellipse 100% 90% at 50% 0%, #1a2840 0%, var(--bg-deep) 60%);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.intro-screen[hidden] {
  display: none;
}

.intro-inner {
  width: 100%;
  max-width: 26rem;
  text-align: center;
}

.intro-hero {
  margin-bottom: 0.5rem;
}

.intro-crystal {
  width: clamp(72px, 22vw, 104px);
  height: auto;
  object-fit: contain;
  filter: drop-shadow(0 0 20px rgba(255, 213, 74, 0.35));
  animation: float 3.2s ease-in-out infinite;
  display: inline-block;
  will-change: transform, opacity, filter;
}

.intro-title {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.35rem, 5vw, 1.85rem);
  letter-spacing: 0.08em;
  line-height: 1.25;
}

.intro-title .intro-line {
  display: block;
}

.intro-slogan {
  margin: 0 auto 1.25rem;
  max-width: 22rem;
  font-size: clamp(0.92rem, 3.4vw, 1.08rem);
  font-weight: 600;
  color: var(--muted);
  line-height: 1.5;
  text-align: center;
}

.intro-line {
  display: block;
}

.intro-char {
  display: inline-block;
  white-space: pre;
  will-change: transform, opacity, filter;
}

.intro-char--space {
  min-width: 0.28em;
}

.btn-enter {
  width: 100%;
  max-width: 280px;
  margin: 0 auto 0.75rem;
  display: flex;
  background: linear-gradient(180deg, #ff8f4d, var(--accent));
  color: #1a0a00;
  box-shadow: 0 4px 24px var(--accent-glow);
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: clamp(0.95rem, 3.5vw, 1.05rem);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  border: none;
  border-radius: var(--radius);
  min-height: max(48px, 44px);
  padding: 0.65rem 1.5rem;
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}

@media (hover: hover) and (pointer: fine) {
  .btn-enter:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px var(--accent-glow);
  }
}

.btn-enter:active {
  transform: scale(0.98);
}

.bot-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 0.25rem;
  padding: 0.45rem 1rem;
  font-size: clamp(0.72rem, 2.8vw, 0.82rem);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  color: #7eb8ff;
  border: 1px solid rgba(94, 158, 255, 0.35);
  border-radius: 999px;
  background: rgba(18, 26, 36, 0.85);
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}

.bot-pill:hover {
  color: #a8d0ff;
  border-color: rgba(126, 184, 255, 0.55);
  background: rgba(26, 38, 52, 0.95);
}

.intro-legal {
  margin: 1rem 0 0;
  font-size: 0.68rem;
  color: var(--muted);
  opacity: 0.7;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-6px);
  }
}

@keyframes introCharScatter {
  to {
    opacity: 0;
    transform: translate3d(var(--tx, 0), var(--ty, 0), 0) rotate(var(--rot, 0deg)) scale(0.25);
    filter: blur(6px);
  }
}

@keyframes introCrystalOut {
  to {
    opacity: 0;
    transform: translateY(-40%) scale(0.4) rotate(-12deg);
    filter: blur(8px);
  }
}

@keyframes introUiFade {
  to {
    opacity: 0;
    transform: translateY(8px);
    filter: blur(4px);
  }
}

.intro-screen--leaving .intro-char {
  animation: introCharScatter 0.82s cubic-bezier(0.25, 0.1, 0.65, 1) forwards;
  animation-delay: calc(var(--i, 0) * 14ms);
}

.intro-screen--leaving .intro-crystal {
  animation: introCrystalOut 0.75s ease-in forwards;
}

.intro-screen--leaving .btn-enter,
.intro-screen--leaving .bot-pill,
.intro-screen--leaving .intro-legal {
  animation: introUiFade 0.45s ease forwards;
  pointer-events: none;
}

.intro-screen--leaving .intro-slogan {
  pointer-events: none;
}

/* ——— Game (viewport shell) ——— */
.game-root {
  position: relative;
  z-index: 2;
  height: 100dvh;
  max-height: 100dvh;
  width: 100%;
  padding-top: calc(1.25rem + var(--safe-top));
  padding-bottom: calc(1.05rem + var(--safe-bottom));
  padding-inline: max(1rem, env(safe-area-inset-left, 0px), env(safe-area-inset-right, 0px));
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow: hidden;
}

.game-root[hidden] {
  display: none !important;
}

.game-stage {
  width: 100%;
  max-width: var(--content-max);
  height: 100%;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
  animation: gameReveal 0.55s cubic-bezier(0.22, 1, 0.36, 1) both;
}

@keyframes gameReveal {
  from {
    opacity: 0;
    transform: scale(0.96);
    filter: blur(10px);
  }
  to {
    opacity: 1;
    transform: scale(1);
    filter: blur(0);
  }
}

.game-head {
  flex-shrink: 0;
  text-align: center;
  line-height: 1.2;
  padding: 0.2rem 0 clamp(0.5rem, 1.8vmin, 0.75rem);
  margin-bottom: clamp(0.35rem, 1.2vmin, 0.55rem);
}

.game-head-logo {
  display: block;
  width: auto;
  max-width: min(100%, 300px);
  max-height: clamp(32px, 9vmin, 52px);
  height: auto;
  margin: 0 auto;
  object-fit: contain;
  object-position: center;
  filter: drop-shadow(0 2px 12px rgba(0, 0, 0, 0.35));
}

.game-head-sub {
  display: block;
  font-size: clamp(0.72rem, 2.9vmin, 0.92rem);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--gold);
  margin-top: clamp(0.4rem, 1.5vmin, 0.65rem);
}

.game-main {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: flex-start;
  gap: 0;
  width: 100%;
  container-type: size;
}

.game-main::after {
  content: "";
  flex: 1 1 auto;
  min-height: 0;
}

.grid-host {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  min-height: 0;
}

.game-grid-wrap {
  width: fit-content;
  max-width: 100%;
  height: fit-content;
  max-height: 100%;
  margin: 0 auto;
  display: block;
  padding: clamp(2px, 0.55vmin, 5px);
  box-shadow: 0 0 0 1px rgba(255, 107, 44, 0.08), 0 8px 28px rgba(0, 0, 0, 0.3);
  box-sizing: border-box;
}

.game-grid-wrap .grid {
  width: min(88vmin, calc(100dvw - 24px), 400px);
  height: min(88vmin, calc(100dvw - 24px), 400px);
  box-sizing: border-box;
}

@supports (width: 1cqw) {
  .game-grid-wrap .grid {
    width: min(100cqw - 12px, 100cqh - 12px, 400px);
    height: min(100cqw - 12px, 100cqh - 12px, 400px);
    box-sizing: border-box;
  }
}

.game-stats.panel {
  flex-shrink: 0;
  padding: clamp(0.3rem, 1vmin, 0.5rem) clamp(0.5rem, 2vmin, 0.85rem);
}

.game-actions {
  flex-shrink: 0;
  padding-top: 0;
  padding-bottom: 0;
  margin-top: 1px;
}

.game-actions .btn {
  min-height: max(44px, 11vmin);
  padding: 0.5rem 1rem;
  font-size: clamp(0.82rem, 3.2vmin, 0.98rem);
}

.game-foot {
  flex-shrink: 0;
  text-align: center;
  margin-top: 2px;
  padding-top: 0;
  padding-bottom: 0.1rem;
}

.game-foot a {
  font-size: clamp(0.62rem, 2.4vmin, 0.72rem);
  color: #7eb8ff;
  text-decoration: none;
  opacity: 0.85;
}

.game-foot a:hover {
  text-decoration: underline;
}

.panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: clamp(0.65rem, 2.5vw, 0.9rem) clamp(0.75rem, 3vw, 1rem);
}

.stats-panel {
  display: flex;
  justify-content: space-around;
  gap: 0.5rem;
  flex-wrap: nowrap;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.1rem;
  min-width: 0;
  flex: 1;
}

.stat-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  font-size: clamp(0.58rem, 2.2vmin, 0.72rem);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.stat-ico {
  width: clamp(14px, 3.8vmin, 18px);
  height: clamp(14px, 3.8vmin, 18px);
  object-fit: contain;
  flex-shrink: 0;
}

.stat-value {
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 4.5vmin, 1.45rem);
  font-weight: 700;
  color: var(--gold);
}

.stat-mines {
  color: #ff8a7a;
}

.grid-wrap {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.grid {
  --cols: 5;
  display: grid;
  grid-template-columns: repeat(var(--cols), 1fr);
  gap: var(--cell-gap);
  aspect-ratio: 1;
  margin: 0 auto;
  touch-action: manipulation;
}

.cell {
  border: none;
  border-radius: clamp(4px, 1.2vmin, 9px);
  background: linear-gradient(145deg, #243447, var(--cell-hidden));
  color: var(--text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(1px, 0.6vmin, 5px);
  transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.2s ease;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
  min-width: 0;
  min-height: 0;
  aspect-ratio: 1;
}

@media (hover: hover) and (pointer: fine) {
  .cell:hover:not(:disabled) {
    transform: scale(1.03);
    box-shadow: 0 0 16px var(--accent-glow);
  }
}

.cell:active:not(:disabled) {
  transform: scale(0.96);
}

.cell:disabled {
  cursor: default;
}

.cell-icon {
  width: min(70%, 48px);
  height: min(70%, 48px);
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  pointer-events: none;
  user-select: none;
}

@media (min-width: 380px) {
  .cell-icon {
    width: min(66%, 52px);
    height: min(66%, 52px);
  }
}

.cell.open {
  background: var(--cell-open);
  border: 1px solid var(--border);
  box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.25);
}

.cell.open.diamond {
  background: linear-gradient(145deg, #2a2210, #1a1510);
  border-color: var(--gold-dim);
  box-shadow: 0 0 14px rgba(255, 213, 74, 0.25);
}

.cell.open.mine {
  background: linear-gradient(145deg, #3a1518, #1a0a0c);
  border-color: var(--mine);
}

.actions {
  display: flex;
  justify-content: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: max(48px, 44px);
  padding: 0.65rem 1.5rem;
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: clamp(0.92rem, 3.5vw, 1.05rem);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  text-decoration: none;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease, opacity 0.2s;
  width: 100%;
  max-width: min(100%, 340px);
}

.btn-primary {
  background: linear-gradient(180deg, #4ade80, #15803d);
  color: #f0fdf4;
  text-shadow: 0 1px 0 rgba(0, 0, 0, 0.2);
  box-shadow: 0 4px 24px rgba(22, 163, 74, 0.45);
}

@media (hover: hover) and (pointer: fine) {
  .btn-primary:hover:not(.is-disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(34, 197, 94, 0.5);
  }
}

.btn-primary.is-disabled {
  opacity: 0.4;
  pointer-events: none;
  cursor: not-allowed;
}

.btn-accent {
  background: linear-gradient(180deg, #5c9eff, #2d6cdf);
  color: #fff;
  box-shadow: 0 4px 20px rgba(45, 108, 223, 0.35);
}

@media (hover: hover) and (pointer: fine) {
  .btn-accent:hover {
    transform: translateY(-2px);
  }
}

@media (min-width: 480px) {
  :root {
    --content-max: 440px;
  }
}

@media (max-width: 320px) {
  .stats-panel {
    flex-wrap: wrap;
  }
}

@media (prefers-reduced-motion: reduce) {
  .intro-crystal {
    animation: none;
  }

  .intro-screen--leaving .intro-char {
    animation: none;
    opacity: 0;
  }

  .intro-screen--leaving .intro-crystal {
    animation: none;
    opacity: 0;
  }

  .intro-screen--leaving .btn-enter,
  .intro-screen--leaving .bot-pill,
  .intro-screen--leaving .intro-legal {
    animation: none;
    opacity: 0;
  }

  .game-stage {
    animation: none;
  }

  .cell,
  .btn,
  .btn-enter {
    transition: none;
  }
}