:root {
  color-scheme: dark;
  --bg-top: #04111d;
  --bg-bottom: #091a27;
  --panel: rgba(7, 18, 30, 0.82);
  --panel-border: rgba(110, 233, 255, 0.18);
  --text: #ecf7ff;
  --muted: #91a9bd;
  --cyan: #6fe9ff;
  --teal: #27c39f;
  --orange: #ffab55;
  --danger: #ff6d75;
  --shadow: rgba(2, 8, 14, 0.45);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(circle at top, rgba(111, 233, 255, 0.08), transparent 32%),
    linear-gradient(180deg, var(--bg-top), var(--bg-bottom));
  color: var(--text);
  font-family: "Chakra Petch", sans-serif;
}

body {
  overflow: hidden;
}

button {
  font: inherit;
}

.app-shell {
  min-height: 100vh;
  padding: 18px;
  display: grid;
  gap: 16px;
}

.hud {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 22px;
  border: 1px solid var(--panel-border);
  border-radius: 24px;
  background: var(--panel);
  backdrop-filter: blur(16px);
  box-shadow: 0 24px 64px var(--shadow);
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--teal);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.8rem;
}

.brand h1 {
  margin: 0;
  font-size: clamp(1.7rem, 3.5vw, 3rem);
}

.stats {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(5, minmax(92px, 1fr));
}

.stat-card,
.info-panel,
.overlay-card {
  border: 1px solid var(--panel-border);
  background: rgba(7, 18, 30, 0.7);
  box-shadow: 0 20px 50px var(--shadow);
}

.stat-card {
  padding: 10px 14px;
  border-radius: 18px;
  text-align: center;
}

.stat-label {
  display: block;
  color: var(--muted);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.stat-card strong {
  display: block;
  margin-top: 4px;
  font-size: 1.2rem;
}

.game-panel {
  display: grid;
  grid-template-columns: minmax(280px, 340px) minmax(0, 1fr);
  gap: 16px;
  min-height: 0;
  flex: 1;
}

.info-panel {
  padding: 18px;
  border-radius: 24px;
  display: grid;
  align-content: start;
  gap: 18px;
  backdrop-filter: blur(16px);
}

.panel-block {
  display: grid;
  gap: 8px;
}

.panel-block p {
  margin: 0;
  line-height: 1.45;
  color: var(--muted);
}

.panel-title {
  color: var(--text) !important;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.85rem;
}

.panel-actions {
  grid-template-columns: 1fr 1fr;
}

.primary-button,
.secondary-button {
  border: 0;
  border-radius: 16px;
  padding: 13px 16px;
  cursor: pointer;
  transition: transform 160ms ease, opacity 160ms ease, background 160ms ease;
}

.primary-button:hover,
.secondary-button:hover,
.action-button:hover {
  transform: translateY(-1px);
}

.primary-button {
  color: #03111d;
  background: linear-gradient(135deg, var(--cyan), #b5fff4);
  font-weight: 700;
}

.secondary-button {
  color: var(--text);
  background: rgba(111, 233, 255, 0.12);
  border: 1px solid rgba(111, 233, 255, 0.24);
}

.viewport-shell {
  position: relative;
  min-height: 0;
  border-radius: 28px;
  overflow: hidden;
  border: 1px solid rgba(111, 233, 255, 0.18);
  background:
    radial-gradient(circle at 20% 20%, rgba(111, 233, 255, 0.1), transparent 22%),
    radial-gradient(circle at 80% 15%, rgba(255, 171, 85, 0.14), transparent 24%),
    linear-gradient(180deg, rgba(4, 12, 20, 0.94), rgba(6, 16, 24, 0.96));
  box-shadow: 0 24px 64px var(--shadow);
}

#gameCanvas {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 640px;
  touch-action: none;
}

.overlay-card {
  position: absolute;
  left: 28px;
  top: 28px;
  width: min(420px, calc(100% - 56px));
  padding: 22px;
  border-radius: 24px;
  backdrop-filter: blur(18px);
}

.overlay-card.hidden {
  display: none;
}

.overlay-kicker {
  margin: 0;
  color: var(--orange);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.78rem;
}

.overlay-card h2 {
  margin: 10px 0 8px;
  font-size: clamp(1.7rem, 4vw, 2.4rem);
}

.overlay-card p {
  margin: 0 0 18px;
  color: var(--muted);
  line-height: 1.5;
}

.mobile-controls {
  position: absolute;
  inset: auto 0 0;
  padding: 20px;
  display: none;
  align-items: end;
  justify-content: space-between;
  pointer-events: none;
}

.mobile-controls.active {
  display: flex;
}

.joystick {
  position: relative;
  width: 146px;
  height: 146px;
  pointer-events: auto;
}

.joystick-base,
.joystick-knob {
  position: absolute;
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.joystick-base {
  left: 50%;
  top: 50%;
  width: 146px;
  height: 146px;
  border: 1px solid rgba(111, 233, 255, 0.18);
  background: rgba(6, 16, 26, 0.42);
  backdrop-filter: blur(12px);
}

.joystick-knob {
  left: 50%;
  top: 50%;
  width: 68px;
  height: 68px;
  background: rgba(111, 233, 255, 0.2);
  border: 1px solid rgba(111, 233, 255, 0.35);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.24);
}

.action-buttons {
  display: grid;
  gap: 12px;
  pointer-events: auto;
}

.action-button {
  width: 104px;
  min-height: 58px;
  border: 0;
  border-radius: 20px;
  color: var(--text);
  background: rgba(6, 16, 26, 0.62);
  border: 1px solid rgba(111, 233, 255, 0.16);
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.24);
}

.pulse-button {
  background: rgba(111, 233, 255, 0.18);
}

.brake-button {
  background: rgba(255, 171, 85, 0.18);
}

@media (max-width: 980px) {
  body {
    overflow: auto;
  }

  .app-shell {
    padding: 12px;
  }

  .hud,
  .game-panel {
    grid-template-columns: 1fr;
  }

  .hud {
    padding: 16px;
  }

  .stats {
    grid-template-columns: repeat(3, minmax(80px, 1fr));
  }

  .info-panel {
    order: 2;
  }

  #gameCanvas {
    min-height: min(74vh, 720px);
  }

  .overlay-card {
    left: 16px;
    top: 16px;
    width: calc(100% - 32px);
  }
}

@media (pointer: coarse) {
  .mobile-controls {
    display: flex;
  }
}