:root {
  --bg: #08130e;
  --card: #10291d;
  --card-2: #163626;
  --text: #f4fbf6;
  --muted: #b9cfbf;
  --accent: #8ce36b;
  --accent-dark: #1f7a3f;
  --road: #2b3034;
  --line: rgba(255,255,255,0.12);
  --shadow: 0 22px 60px rgba(0,0,0,0.38);
}

* { box-sizing: border-box; }

html { color-scheme: dark; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 20% 10%, rgba(95, 180, 112, 0.18), transparent 34%),
    linear-gradient(180deg, #0a1710 0%, var(--bg) 100%);
  color: var(--text);
}

button { font: inherit; }

.page-shell {
  width: min(1100px, 100%);
  margin: 0 auto;
  padding: 28px 18px 48px;
}

.game-card {
  background: linear-gradient(180deg, rgba(22,54,38,0.98), rgba(12,29,20,0.98));
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 24px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.game-header {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: flex-end;
  padding: 28px 30px 20px;
}

.eyebrow {
  margin: 0 0 7px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.13em;
  font-size: 0.72rem;
  font-weight: 800;
}

h1, h2, p { margin-top: 0; }

h1 {
  margin-bottom: 8px;
  font-size: clamp(2rem, 6vw, 3.6rem);
  line-height: 0.95;
  letter-spacing: -0.045em;
}

.subtitle {
  margin-bottom: 0;
  max-width: 650px;
  color: var(--muted);
  line-height: 1.55;
}

.score-stack {
  display: flex;
  gap: 10px;
  align-items: stretch;
}

.score-panel {
  min-width: 102px;
  padding: 13px 18px;
  border-radius: 16px;
  background: rgba(0,0,0,0.18);
  border: 1px solid rgba(255,255,255,0.08);
  text-align: center;
}

.score-label {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

#score-value,
#level-value {
  display: block;
  margin-top: 3px;
  font-size: 1.8rem;
}

.status-bar {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 10px 30px;
  background: rgba(0,0,0,0.16);
  border-top: 1px solid rgba(255,255,255,0.06);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  color: var(--muted);
  font-size: 0.92rem;
}

.canvas-wrap {
  position: relative;
  background: #1a1d1f;
}

#game-canvas {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  touch-action: none;
}

.game-overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(5,14,9,0.58);
  backdrop-filter: blur(3px);
  transition: opacity 160ms ease;
}

.game-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.overlay-panel {
  width: min(440px, 92%);
  padding: 24px;
  border-radius: 20px;
  background: rgba(11,31,20,0.94);
  border: 1px solid rgba(255,255,255,0.12);
  box-shadow: 0 18px 44px rgba(0,0,0,0.38);
  text-align: center;
}

.overlay-kicker {
  margin-bottom: 5px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.overlay-panel h2 {
  margin-bottom: 9px;
  font-size: clamp(1.7rem, 5vw, 2.5rem);
}

.overlay-panel p:not(.overlay-kicker) {
  color: var(--muted);
  line-height: 1.5;
}

.primary-button {
  margin-top: 6px;
  border: 0;
  border-radius: 999px;
  padding: 12px 22px;
  background: var(--accent);
  color: #0b2714;
  font-weight: 900;
  cursor: pointer;
  box-shadow: 0 9px 24px rgba(93, 219, 114, 0.2);
}

.primary-button:hover { filter: brightness(1.06); }
.primary-button:active { transform: translateY(1px); }
.primary-button:focus-visible,
.move-button:focus-visible {
  outline: 3px solid #fff;
  outline-offset: 3px;
}

.controls-and-help {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  align-items: center;
  padding: 26px 30px 30px;
}

.instructions h2,
.leaderboard-section h2 {
  margin-bottom: 9px;
  font-size: 1.25rem;
}

.instructions p {
  margin-bottom: 8px;
  max-width: 700px;
  color: var(--muted);
  line-height: 1.55;
}

.touch-controls {
  display: grid;
  grid-template-columns: repeat(3, 52px);
  grid-template-rows: repeat(2, 52px);
  gap: 8px;
}

.move-button {
  border: 1px solid rgba(255,255,255,0.13);
  border-radius: 14px;
  background: rgba(255,255,255,0.08);
  color: #fff;
  font-size: 1.15rem;
  cursor: pointer;
  user-select: none;
  touch-action: manipulation;
}

.move-button:hover { background: rgba(255,255,255,0.13); }
.move-button:active { transform: scale(0.96); }
.move-up { grid-column: 2; grid-row: 1; }
.move-left { grid-column: 1; grid-row: 2; }
.move-down { grid-column: 2; grid-row: 2; }
.move-right { grid-column: 3; grid-row: 2; }

.leaderboard-section {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 20px;
  padding: 24px 30px 30px;
  border-top: 1px solid rgba(255,255,255,0.08);
  background: rgba(0,0,0,0.12);
}

#mis-leaderboard { min-height: 44px; }

@media (max-width: 720px) {
  .page-shell { padding: 0; }
  .game-card { border-radius: 0; min-height: 100vh; }
  .game-header { align-items: flex-start; padding: 22px 18px 16px; }
  .subtitle { font-size: 0.93rem; }
  .score-stack { gap: 6px; }
  .score-panel { min-width: 70px; padding: 10px 10px; }
  .status-bar { padding: 9px 18px; font-size: 0.8rem; }
  .controls-and-help { grid-template-columns: 1fr; padding: 20px 18px 24px; }
  .touch-controls { justify-self: center; grid-template-columns: repeat(3, 58px); grid-template-rows: repeat(2, 58px); }
  .leaderboard-section { grid-template-columns: 1fr; padding: 20px 18px 28px; }
}

@media (max-width: 480px) {
  .game-header { gap: 12px; }
  .subtitle { display: none; }
  .status-bar { flex-direction: column; gap: 3px; }
  .overlay-panel { padding: 20px 16px; }
}

.power-bar {
  display: flex;
  gap: 8px;
  align-items: center;
  min-height: 38px;
  padding: 8px 30px;
  background: rgba(18, 68, 42, 0.55);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  color: var(--muted);
  font-size: 0.88rem;
}

.power-bar-label {
  color: var(--accent);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.72rem;
}

#power-status {
  color: var(--text);
  font-weight: 700;
}

.power-guide {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 20px;
  padding: 24px 30px 28px;
  border-top: 1px solid rgba(255,255,255,0.08);
  background: rgba(255,255,255,0.025);
}

.power-guide h2 {
  margin-bottom: 0;
  font-size: 1.25rem;
}

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

.power-grid > div {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  grid-template-rows: auto auto;
  column-gap: 10px;
  align-items: center;
  padding: 10px;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 13px;
  background: rgba(0,0,0,0.12);
}

.power-grid strong { font-size: 0.86rem; }
.power-grid small {
  grid-column: 2;
  color: var(--muted);
  line-height: 1.3;
}

.power-icon {
  grid-row: 1 / span 2;
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  color: #08130e;
  font-weight: 950;
  box-shadow: inset 0 0 0 2px rgba(255,255,255,0.35);
}
.power-icon.freeze { background: #9ee8ff; }
.power-icon.slow { background: #ffe279; }
.power-icon.shield { background: #8dc6ff; }
.power-icon.clear { background: #ff9ed2; }
.power-icon.jump { background: #b7ff85; }
.power-icon.double { background: #ffc266; }

@media (max-width: 720px) {
  .power-bar { padding: 8px 18px; }
  .power-guide { grid-template-columns: 1fr; padding: 20px 18px 24px; }
  .power-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 430px) {
  .power-grid { grid-template-columns: 1fr; }
}