:root {
  --ink: #f3ecdf;
  --muted: #c6d3d9;
  --panel: rgba(8, 16, 24, 0.82);
  --panel-edge: rgba(123, 209, 222, 0.35);
  --chip: rgba(5, 12, 18, 0.68);
  --line: rgba(255, 204, 145, 0.32);
  --accent: #ffb36c;
  --accent-2: #63e0e6;
  --danger: #ff665f;
  --danger-2: #ff9b73;
  --safe: #96ffb2;
  --shadow: rgba(0, 0, 0, 0.38);
}

* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

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

body {
  overflow: hidden;
  color: var(--ink);
  font-family: "Avenir Next Condensed", "Franklin Gothic Medium", "Arial Narrow", sans-serif;
  background:
    radial-gradient(circle at 20% 16%, rgba(255, 165, 92, 0.18), transparent 30%),
    radial-gradient(circle at 78% 10%, rgba(105, 225, 236, 0.12), transparent 34%),
    linear-gradient(180deg, #0c1622 0%, #070b11 100%);
}

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

.overlay {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    radial-gradient(circle at center, rgba(14, 28, 40, 0.18), rgba(2, 5, 8, 0.7)),
    linear-gradient(180deg, rgba(4, 9, 14, 0.42), rgba(2, 5, 8, 0.78));
  backdrop-filter: blur(5px);
  z-index: 30;
  opacity: 0;
  pointer-events: none;
  transition: opacity 220ms ease;
}

.overlay.show {
  opacity: 1;
  pointer-events: auto;
}

.overlay.hidden {
  display: none;
}

.panel {
  width: min(720px, 94vw);
  padding: 28px 30px 30px;
  border: 1px solid var(--panel-edge);
  background:
    linear-gradient(160deg, rgba(9, 17, 26, 0.92), rgba(10, 22, 32, 0.78)),
    radial-gradient(circle at top right, rgba(99, 224, 230, 0.12), transparent 34%);
  clip-path: polygon(0 18px, 18px 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%);
  box-shadow:
    0 24px 60px rgba(0, 0, 0, 0.45),
    inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.hero-panel {
  max-width: 720px;
}

.result-panel {
  max-width: 640px;
}

.eyebrow {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.76rem;
  color: #95aeb9;
}

.panel h1,
.panel h2 {
  margin: 8px 0 0;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  font-size: clamp(2rem, 4vw, 3.3rem);
}

.panel h2 {
  font-size: clamp(1.8rem, 3.6vw, 2.6rem);
}

.subtitle {
  margin: 12px 0 0;
  max-width: 58ch;
  color: var(--muted);
  line-height: 1.45;
  font-size: 1rem;
}

.intro-grid,
.result-grid {
  margin-top: 20px;
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.intro-card {
  padding: 14px 16px;
  border: 1px solid rgba(146, 204, 216, 0.26);
  background: rgba(6, 14, 21, 0.5);
  border-radius: 14px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03);
}

.intro-card.danger {
  border-color: rgba(255, 112, 102, 0.36);
  background: linear-gradient(180deg, rgba(66, 15, 14, 0.38), rgba(14, 10, 12, 0.5));
}

.intro-card span {
  display: block;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.72rem;
  color: #9eb1bc;
}

.intro-card strong {
  display: block;
  margin-top: 8px;
  font-size: 1.18rem;
}

.controls {
  margin-top: 20px;
  display: grid;
  gap: 9px;
}

.controls p {
  margin: 0;
  font-size: 0.98rem;
  color: #edf4f8;
}

kbd {
  border: 1px solid rgba(179, 223, 234, 0.55);
  border-bottom-width: 2px;
  border-radius: 8px;
  padding: 2px 8px;
  background: rgba(7, 17, 26, 0.92);
  color: #eefbff;
  font-size: 0.9rem;
}

.start-btn {
  margin-top: 22px;
  border: 1px solid rgba(255, 189, 133, 0.92);
  clip-path: polygon(0 10px, 10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
  padding: 14px 20px;
  background: linear-gradient(120deg, var(--accent), #f8cb88 42%, #ffe4b8 100%);
  color: #111925;
  font-size: 0.98rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform 150ms ease, filter 150ms ease, opacity 150ms ease;
}

.start-btn:hover:not(:disabled) {
  transform: translateY(-1px);
  filter: brightness(1.03);
}

.start-btn:disabled {
  opacity: 0.68;
  cursor: not-allowed;
}

.hud {
  position: fixed;
  top: 12px;
  left: 12px;
  right: 12px;
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(auto-fit, minmax(132px, 1fr));
  z-index: 12;
}

.hud.hidden {
  display: none;
}

.hud-chip {
  padding: 10px 11px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--chip);
  box-shadow: 0 12px 26px rgba(0, 0, 0, 0.16);
  backdrop-filter: blur(6px);
}

.hud-chip span {
  display: block;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.68rem;
  color: #aebdc7;
}

.hud-chip strong {
  display: block;
  margin-top: 5px;
  font-size: 1.04rem;
}

.hud-chip strong.danger {
  color: var(--danger);
}

.hud-chip strong.safe {
  color: var(--safe);
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  min-width: min(460px, calc(100vw - 32px));
  max-width: min(560px, calc(100vw - 32px));
  padding: 12px 16px;
  border: 1px solid rgba(255, 198, 146, 0.32);
  border-radius: 999px;
  background: rgba(6, 13, 19, 0.86);
  box-shadow: 0 16px 34px var(--shadow);
  text-align: center;
  color: #ecf6fb;
  z-index: 14;
  backdrop-filter: blur(6px);
  transition: opacity 180ms ease, transform 180ms ease;
}

.toast.hidden {
  opacity: 0;
  transform: translate(-50%, 10px);
  pointer-events: none;
}

@media (max-width: 900px) {
  .intro-grid,
  .result-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 820px) {
  .overlay {
    padding: 16px;
  }

  .panel {
    padding: 22px 20px 24px;
  }

  .panel h1,
  .panel h2 {
    font-size: clamp(1.7rem, 7vw, 2.3rem);
  }

  .subtitle,
  .controls p {
    font-size: 0.94rem;
  }

  .hud {
    top: 8px;
    left: 8px;
    right: 8px;
    gap: 8px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hud-chip {
    padding: 8px 9px;
  }

  .hud-chip strong {
    font-size: 0.94rem;
  }

  .toast {
    bottom: 12px;
    border-radius: 16px;
  }
}