:root {
  color-scheme: dark;
  --bg: #08141d;
  --bg-deep: #05090d;
  --surface: rgba(8, 20, 29, 0.7);
  --surface-strong: rgba(8, 20, 29, 0.92);
  --line: rgba(190, 243, 255, 0.14);
  --text: #f6f4ed;
  --muted: #adc6cf;
  --teal: #7af7d9;
  --amber: #ffb347;
  --coral: #ff6f61;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.38);
}

* {
  box-sizing: border-box;
}

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

body {
  position: relative;
  overflow-x: hidden;
  font-family: "Manrope", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(122, 247, 217, 0.18), transparent 32%),
    radial-gradient(circle at 85% 10%, rgba(255, 111, 97, 0.18), transparent 28%),
    radial-gradient(circle at 50% 100%, rgba(255, 179, 71, 0.14), transparent 28%),
    linear-gradient(140deg, #071118 10%, #0d1b24 45%, #06090f 100%);
}

button,
canvas {
  touch-action: manipulation;
}

.noise,
.ambient {
  pointer-events: none;
  position: fixed;
  inset: 0;
}

.noise {
  opacity: 0.16;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 10px 10px;
  mask-image: radial-gradient(circle at center, black, transparent 90%);
}

.ambient {
  filter: blur(36px);
  opacity: 0.85;
}

.ambient-a {
  inset: 10% auto auto 8%;
  width: 22rem;
  height: 22rem;
  border-radius: 50%;
  background: rgba(122, 247, 217, 0.18);
  animation: drift 16s ease-in-out infinite;
}

.ambient-b {
  inset: auto 10% 14% auto;
  width: 20rem;
  height: 20rem;
  border-radius: 50%;
  background: rgba(255, 179, 71, 0.16);
  animation: drift 20s ease-in-out infinite reverse;
}

.ambient-c {
  inset: 52% auto auto 56%;
  width: 18rem;
  height: 18rem;
  border-radius: 50%;
  background: rgba(255, 111, 97, 0.14);
  animation: float 14s ease-in-out infinite;
}

.app-shell {
  position: relative;
  z-index: 1;
  width: min(1180px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 40px 0 56px;
}

.hero-card,
.game-stage,
.control-panel {
  border: 1px solid var(--line);
  border-radius: 28px;
  background: linear-gradient(180deg, rgba(14, 26, 35, 0.88), rgba(6, 12, 18, 0.78));
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.hero-card {
  display: grid;
  gap: 24px;
  padding: 28px;
}

.eyebrow,
.panel-label,
.stat-label,
.overlay-kicker {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  color: var(--muted);
}

.hero-copy h1,
.stage-header h2,
.overlay h3 {
  margin: 0;
  font-family: "Syne", sans-serif;
}

.hero-copy h1 {
  font-size: clamp(3rem, 7vw, 5.6rem);
  line-height: 0.92;
  max-width: 10ch;
}

.lede {
  max-width: 62ch;
  margin: 14px 0 0;
  color: #d2e0e5;
  font-size: 1.04rem;
  line-height: 1.75;
}

.stats-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.stat-card {
  padding: 18px 20px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.stat-card strong {
  display: block;
  margin-top: 10px;
  font-size: clamp(1.4rem, 3vw, 2.4rem);
  font-weight: 800;
}

.playground {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(280px, 0.8fr);
  gap: 22px;
  margin-top: 22px;
}

.game-stage,
.control-panel {
  padding: 22px;
}

.stage-header,
.panel-block {
  display: grid;
  gap: 14px;
}

.stage-header {
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: start;
  margin-bottom: 18px;
}

.stage-header h2 {
  margin-top: 8px;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
}

.status-pill {
  align-self: center;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid rgba(122, 247, 217, 0.22);
  background: rgba(122, 247, 217, 0.08);
  color: var(--teal);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.canvas-shell {
  position: relative;
  overflow: hidden;
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(180deg, rgba(11, 25, 33, 0.92), rgba(4, 10, 14, 0.98));
  background-size: 30px 30px, 30px 30px, auto;
  aspect-ratio: 1;
}

#game {
  display: block;
  width: 100%;
  height: 100%;
}

.overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  gap: 14px;
  padding: 24px;
  text-align: center;
  background: radial-gradient(circle, rgba(6, 13, 19, 0.56), rgba(6, 13, 19, 0.82));
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 220ms ease,
    visibility 220ms ease;
}

.overlay.visible {
  opacity: 1;
  visibility: visible;
}

.overlay h3 {
  font-size: clamp(2rem, 5vw, 3rem);
}

.overlay p:not(.overlay-kicker) {
  max-width: 34ch;
  margin: 0 auto;
  color: #d1dfe4;
  line-height: 1.7;
}

.control-panel {
  display: grid;
  align-content: start;
  gap: 18px;
}

.button-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.primary-button,
.secondary-button,
.control-key {
  border: 0;
  border-radius: 18px;
  color: var(--text);
  font: inherit;
  cursor: pointer;
  transition:
    transform 160ms ease,
    box-shadow 160ms ease,
    background 160ms ease;
}

.primary-button,
.secondary-button {
  min-height: 52px;
  padding: 0 16px;
}

.primary-button {
  background: linear-gradient(135deg, var(--amber), #ff7e56);
  color: #1f120b;
  font-weight: 800;
  box-shadow: 0 16px 36px rgba(255, 126, 86, 0.26);
}

.secondary-button {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-weight: 700;
}

.primary-button:hover,
.secondary-button:hover,
.control-key:hover {
  transform: translateY(-2px);
}

.primary-button:active,
.secondary-button:active,
.control-key:active {
  transform: translateY(1px) scale(0.99);
}

.control-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  max-width: 280px;
}

.control-key {
  min-height: 72px;
  background:
    linear-gradient(180deg, rgba(122, 247, 217, 0.18), rgba(122, 247, 217, 0.05)),
    rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(122, 247, 217, 0.18);
  font-size: 1.5rem;
  font-weight: 700;
}

.control-key.up {
  grid-column: 2;
}

.control-key.left {
  grid-column: 1;
  grid-row: 2;
}

.control-key.down {
  grid-column: 2;
  grid-row: 2;
}

.control-key.right {
  grid-column: 3;
  grid-row: 2;
}

.hint-list {
  margin: 0;
  padding-left: 18px;
  color: #d4e3e7;
  line-height: 1.75;
}

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

@keyframes drift {
  0%,
  100% {
    transform: translate3d(0, 0, 0) scale(1);
  }

  50% {
    transform: translate3d(24px, -28px, 0) scale(1.08);
  }
}

@keyframes float {
  0%,
  100% {
    transform: translate3d(0, 0, 0) scale(1);
  }

  50% {
    transform: translate3d(-30px, 22px, 0) scale(0.94);
  }
}

@media (max-width: 980px) {
  .stats-row,
  .playground,
  .button-row {
    grid-template-columns: 1fr;
  }

  .control-grid {
    max-width: none;
  }
}

@media (max-width: 720px) {
  .app-shell {
    width: min(100vw - 18px, 1180px);
    padding: 18px 0 28px;
  }

  .hero-card,
  .game-stage,
  .control-panel {
    border-radius: 22px;
    padding: 18px;
  }

  .hero-copy h1 {
    font-size: clamp(2.6rem, 14vw, 4.4rem);
  }

  .stage-header {
    grid-template-columns: 1fr;
  }

  .control-key {
    min-height: 64px;
  }
}