:root {
  color-scheme: dark;
  --background: #07111f;
  --background-soft: #0d1b2f;
  --panel: rgba(11, 27, 46, 0.82);
  --panel-strong: rgba(9, 20, 34, 0.96);
  --text: #f8fafc;
  --muted: #a8bdd2;
  --line: rgba(148, 163, 184, 0.22);
  --green: #22c55e;
  --green-soft: #86efac;
  --cyan: #38bdf8;
  --blue: #2563eb;
  --red: #ef4444;
  --yellow: #facc15;
  --shadow: 0 28px 70px rgba(0, 0, 0, 0.34);
  --radius: 1.25rem;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 15% 8%, rgba(34, 197, 94, 0.22), transparent 28rem),
    radial-gradient(circle at 85% 12%, rgba(37, 99, 235, 0.2), transparent 30rem),
    linear-gradient(145deg, #030712, var(--background) 42%, #0f172a);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.07) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.8), transparent 75%);
}

button,
select {
  font: inherit;
}

button,
a,
select {
  -webkit-tap-highlight-color: transparent;
}

a {
  color: inherit;
}

:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 1000;
  padding: 0.75rem 1rem;
  transform: translateY(-160%);
  border-radius: 0.75rem;
  background: var(--text);
  color: #020617;
  font-weight: 900;
}

.skip-link:focus {
  transform: translateY(0);
}

.container {
  width: min(100% - 2rem, 74rem);
  margin-inline: auto;
}

.hero {
  padding: max(2.25rem, env(safe-area-inset-top)) 0 clamp(2rem, 5vw, 4rem);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(16rem, 0.6fr);
  align-items: end;
  gap: 2rem;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 0.65rem;
  color: var(--green-soft);
  font-size: 0.78rem;
  font-weight: 950;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 58rem;
  margin: 0;
  font-size: clamp(3.2rem, 11vw, 7.5rem);
  line-height: 0.9;
  letter-spacing: -0.075em;
}

.hero p,
.score-section p {
  max-width: 44rem;
  margin: 1.25rem 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.2rem);
}

.hero-actions {
  margin-top: 1.6rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hero-button,
.game-button {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 0.8rem;
  font-weight: 950;
  text-decoration: none;
  cursor: pointer;
  transition: transform 180ms ease, background-color 180ms ease, border-color 180ms ease, color 180ms ease;
}

.hero-button {
  padding: 0.75rem 1rem;
}

.hero-button-primary,
.game-button-primary {
  background: var(--green);
  color: #03120a;
}

.hero-button-primary:hover,
.game-button-primary:hover:not(:disabled) {
  background: #4ade80;
  transform: translateY(-1px);
}

.hero-button-secondary,
.game-button {
  border-color: var(--line);
  background: rgba(15, 23, 42, 0.62);
  color: var(--text);
}

.hero-button-secondary:hover,
.game-button:hover:not(:disabled) {
  border-color: rgba(56, 189, 248, 0.55);
  transform: translateY(-1px);
}

.game-button-danger {
  background: rgba(239, 68, 68, 0.14);
  color: #fecaca;
}

.game-button:disabled {
  cursor: not-allowed;
  opacity: 0.48;
}

.hero-card {
  padding: 1.4rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.hero-card span,
.hero-card small {
  color: var(--muted);
}

.hero-card strong {
  display: block;
  margin: 0.2rem 0;
  color: var(--green-soft);
  font-size: clamp(2.4rem, 7vw, 4rem);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.game-section {
  padding: 0 0 clamp(3rem, 7vw, 5rem);
}

.game-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(17rem, 0.38fr);
  gap: 1.5rem;
  align-items: start;
}

.game-panel,
.control-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.game-panel {
  padding: clamp(1rem, 3vw, 1.5rem);
}

.panel-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.panel-head h2,
.score-section h2,
.control-card h2 {
  margin: 0;
  line-height: 1.1;
  letter-spacing: -0.04em;
}

.panel-head h2 {
  font-size: clamp(1.45rem, 4vw, 2.2rem);
}

.game-status {
  max-width: 23rem;
  margin: 0;
  color: var(--muted);
  text-align: right;
}

.score-strip {
  margin-bottom: 1rem;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: rgba(2, 6, 23, 0.45);
}

.score-strip div {
  padding: 0.75rem;
  border-right: 1px solid var(--line);
}

.score-strip div:last-child {
  border-right: 0;
}

.score-strip span {
  display: block;
  color: var(--muted);
  font-size: 0.74rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.score-strip strong {
  display: block;
  color: var(--text);
  font-size: clamp(1.25rem, 3vw, 1.8rem);
  font-variant-numeric: tabular-nums;
}

.canvas-wrap {
  position: relative;
  overflow: hidden;
  touch-action: none;
  border: 1px solid rgba(56, 189, 248, 0.22);
  border-radius: 1.1rem;
  background:
    radial-gradient(circle at 50% 50%, rgba(34, 197, 94, 0.12), transparent 42%),
    #030712;
}

canvas {
  width: 100%;
  display: block;
  aspect-ratio: 1;
  touch-action: none;
}

.screen-overlay {
  position: absolute;
  inset: 0;
  display: none;
  place-items: center;
  padding: 1rem;
  background: rgba(2, 6, 23, 0.62);
  backdrop-filter: blur(8px);
}

.screen-overlay.is-visible {
  display: grid;
}

.screen-card {
  width: min(100%, 31rem);
  padding: clamp(1.3rem, 4vw, 2rem);
  border: 1px solid rgba(134, 239, 172, 0.35);
  border-radius: 1rem;
  background: rgba(5, 16, 28, 0.94);
  box-shadow: 0 22px 80px rgba(0, 0, 0, 0.44);
  text-align: center;
}

.screen-card.is-win {
  border-color: rgba(134, 239, 172, 0.7);
  background:
    radial-gradient(circle at 50% 0%, rgba(34, 197, 94, 0.24), transparent 55%),
    rgba(5, 16, 28, 0.96);
}

.screen-card.is-crash {
  border-color: rgba(147, 197, 253, 0.82);
  background: #0643a3;
  color: #fff;
  text-align: left;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

.screen-kicker {
  color: var(--green-soft);
  font-size: 0.76rem;
  font-weight: 950;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.screen-card.is-crash .screen-kicker {
  color: #dbeafe;
}

.screen-card h2 {
  margin: 0.45rem 0 0;
  font-size: clamp(2rem, 6vw, 3.25rem);
  line-height: 1;
}

.screen-card p {
  margin: 0.9rem 0 1.4rem;
  color: var(--muted);
}

.screen-card.is-crash p {
  color: #eff6ff;
}

.control-panel {
  display: grid;
  gap: 1rem;
}

.control-card {
  padding: 1.1rem;
}

.control-card h2 {
  margin-bottom: 0.85rem;
  font-size: 1.2rem;
}

.control-card p {
  margin: -0.35rem 0 0.9rem;
  color: var(--muted);
}

.control-card label {
  display: block;
  margin: 0.75rem 0 0.35rem;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.control-card select {
  width: 100%;
  min-height: 46px;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  background: var(--panel-strong);
  color: var(--text);
}

.button-stack {
  display: grid;
  gap: 0.65rem;
}

.dpad {
  display: grid;
  grid-template-columns: repeat(3, 3.25rem);
  grid-template-areas:
    ". up ."
    "left down right";
  gap: 0.55rem;
  justify-content: center;
}

.dpad button {
  width: 3.25rem;
  height: 3.25rem;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  background: rgba(15, 23, 42, 0.82);
  color: var(--text);
  cursor: pointer;
  transition: transform 150ms ease, border-color 150ms ease, background-color 150ms ease;
}

.dpad button:hover,
.dpad button:focus-visible {
  border-color: var(--cyan);
  background: rgba(56, 189, 248, 0.16);
  transform: translateY(-1px);
}

.dpad svg {
  width: 1.35rem;
  height: 1.35rem;
}

.dpad [data-direction="up"] { grid-area: up; }
.dpad [data-direction="left"] { grid-area: left; }
.dpad [data-direction="down"] { grid-area: down; }
.dpad [data-direction="right"] { grid-area: right; }

.score-section {
  padding: clamp(3rem, 8vw, 5.5rem) 0;
  border-top: 1px solid var(--line);
  background: rgba(2, 6, 23, 0.24);
}

.score-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 2rem;
  align-items: start;
}

.score-section h2 {
  font-size: clamp(2rem, 5vw, 3.5rem);
}

.run-list {
  min-height: 8rem;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
  list-style: none;
}

.run-list li {
  padding: 0.9rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  background: var(--panel);
}

.run-list span {
  color: var(--muted);
}

.run-list strong {
  color: var(--green-soft);
  font-size: 1.1rem;
}

@media (max-width: 62rem) {
  .hero-grid,
  .game-layout,
  .score-grid {
    grid-template-columns: 1fr;
  }

  .hero-card {
    max-width: 24rem;
  }

  .game-status {
    text-align: left;
  }
}

@media (max-width: 42rem) {
  .container {
    width: min(100% - 1rem, 74rem);
  }

  .panel-head {
    align-items: start;
    flex-direction: column;
  }

  .score-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .score-strip div:nth-child(2) {
    border-right: 0;
  }

  .score-strip div:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }

  .screen-overlay {
    align-items: end;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }

  .hero-button:hover,
  .game-button:hover,
  .dpad button:hover {
    transform: none !important;
  }
}