:root {
  --bg: #161512;
  --panel: rgba(255, 250, 238, 0.94);
  --ink: #181714;
  --muted: #6b6559;
  --line: rgba(255, 250, 238, 0.22);
  --cyan: #00d5ff;
  --coral: #ff5a3c;
  --lime: #a9f04f;
  --gold: #ffc947;
  --cream: #fff4d7;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
}

body {
  margin: 0;
  overflow: hidden;
  background:
    radial-gradient(circle at 18% 18%, rgba(255, 90, 60, 0.22), transparent 26rem),
    radial-gradient(circle at 82% 16%, rgba(0, 213, 255, 0.18), transparent 24rem),
    linear-gradient(135deg, #181611, #242018 52%, #17130f);
  color: var(--cream);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button {
  font: inherit;
}

.game-shell {
  display: grid;
  grid-template-rows: auto 1fr;
  width: 100vw;
  height: 100dvh;
  min-height: 500px;
  padding: max(12px, env(safe-area-inset-top)) max(12px, env(safe-area-inset-right)) max(12px, env(safe-area-inset-bottom)) max(12px, env(safe-area-inset-left));
  gap: 10px;
}

.hud {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
  min-height: 54px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(20, 19, 16, 0.74);
  backdrop-filter: blur(12px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.18);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  font-weight: 800;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--coral), var(--gold));
  color: #18110d;
  font-size: 0.78rem;
  box-shadow: 0 0 22px rgba(255, 90, 60, 0.32);
}

.stats {
  display: flex;
  justify-content: center;
  gap: clamp(8px, 2.2vw, 24px);
  min-width: 0;
  color: rgba(255, 244, 215, 0.82);
  font-size: clamp(0.78rem, 1.7vw, 0.96rem);
}

.stats span {
  white-space: nowrap;
}

.stats strong {
  color: #ffffff;
}

.hud-button,
.primary-button,
.ghost-button {
  min-height: 40px;
  border: 0;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 800;
}

.hud-button {
  padding: 0 14px;
  background: rgba(255, 250, 238, 0.1);
  color: var(--cream);
  border: 1px solid rgba(255, 250, 238, 0.18);
}

.hud-button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.play-area {
  position: relative;
  min-height: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    rgba(13, 13, 11, 0.68);
  background-size: 38px 38px;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.4), 0 24px 50px rgba(0, 0, 0, 0.28);
  touch-action: none;
}

#game-stage {
  width: 100%;
  height: 100%;
}

#game-stage canvas {
  display: block;
  margin: auto;
  cursor: none;
}

.panel {
  position: absolute;
  inset: 50% auto auto 50%;
  width: min(92vw, 420px);
  transform: translate(-50%, -50%) scale(0.98);
  padding: 26px;
  border-radius: 8px;
  background: var(--panel);
  color: var(--ink);
  text-align: center;
  box-shadow: 0 26px 70px rgba(0, 0, 0, 0.36);
  opacity: 0;
  pointer-events: none;
  transition: opacity 160ms ease, transform 160ms ease;
}

.panel-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translate(-50%, -50%) scale(1);
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--coral);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.76rem;
}

h1,
h2 {
  margin: 0 0 12px;
  line-height: 1;
}

h1 {
  font-size: clamp(2.25rem, 8vw, 4rem);
}

h2 {
  font-size: clamp(2rem, 7vw, 3.2rem);
}

.panel-copy,
.controls-note {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

.controls-note {
  margin-top: 18px;
  font-size: 0.9rem;
}

.button-row {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 22px;
}

.primary-button,
.ghost-button {
  padding: 0 20px;
}

.primary-button {
  background: linear-gradient(135deg, var(--coral), var(--gold));
  color: #22140c;
  box-shadow: 0 10px 24px rgba(255, 90, 60, 0.28);
}

.ghost-button {
  background: rgba(24, 23, 20, 0.08);
  color: var(--ink);
}

.toast {
  position: absolute;
  left: 50%;
  top: 18px;
  transform: translateX(-50%) translateY(-10px);
  min-width: 180px;
  padding: 10px 14px;
  border-radius: 8px;
  background: rgba(255, 250, 238, 0.94);
  color: var(--ink);
  font-weight: 900;
  text-align: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 160ms ease, transform 160ms ease;
}

.toast-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

@media (max-width: 760px) {
  .game-shell {
    min-height: 430px;
    gap: 8px;
    padding: max(8px, env(safe-area-inset-top)) max(8px, env(safe-area-inset-right)) max(8px, env(safe-area-inset-bottom)) max(8px, env(safe-area-inset-left));
  }

  .hud {
    grid-template-columns: 1fr auto;
    gap: 8px;
    min-height: 0;
  }

  .brand {
    font-size: 0.9rem;
  }

  .brand-mark {
    width: 30px;
    height: 30px;
  }

  .stats {
    grid-column: 1 / -1;
    grid-row: 2;
    justify-content: space-between;
    order: 3;
    overflow-x: auto;
    padding-bottom: 1px;
  }

  .panel {
    padding: 20px;
  }
}

@media (max-width: 420px) {
  .brand span:last-child {
    display: none;
  }

  .stats {
    font-size: 0.72rem;
  }

  .hud-button {
    min-height: 34px;
    padding: 0 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}