:root {
  --bg: #0e1118;
  --panel: #151b26;
  --panel-2: #0f141f;
  --text: #f4f1ea;
  --muted: #a3b1c6;
  --accent: #f7c76b;
  --accent-2: #4fd1c5;
  --danger: #ff6b5a;
  --shadow: rgba(6, 9, 15, 0.35);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Avenir Next", "Gill Sans", "Trebuchet MS", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 15% 20%, rgba(79, 209, 197, 0.18), transparent 45%),
    radial-gradient(circle at 75% 10%, rgba(247, 199, 107, 0.18), transparent 40%),
    linear-gradient(160deg, #0c0f17, #0b1220 40%, #141a28 100%);
  display: flex;
  justify-content: center;
  padding: 24px 16px 40px;
}

.page {
  width: min(920px, 100%);
  display: grid;
  gap: 20px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.eyebrow {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 11px;
  color: var(--muted);
}

h1 {
  margin: 6px 0 0;
  font-size: clamp(28px, 4vw, 40px);
  letter-spacing: 0.04em;
}

.back {
  color: var(--accent);
  text-decoration: none;
  font-weight: 700;
}

.back:hover {
  color: var(--accent-2);
}

.hud {
  background: linear-gradient(145deg, rgba(21, 27, 38, 0.85), rgba(12, 16, 26, 0.95));
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 18px;
  padding: 14px 18px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 12px;
  align-items: center;
  box-shadow: 0 20px 45px var(--shadow);
}

.stat {
  display: grid;
  gap: 6px;
}

.label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.value {
  font-size: 22px;
  font-weight: 800;
  color: var(--text);
}

.actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  align-items: center;
}

button {
  border: none;
  border-radius: 12px;
  padding: 10px 16px;
  font-weight: 800;
  letter-spacing: 0.04em;
  cursor: pointer;
  background: linear-gradient(135deg, var(--accent), #ffe1a8);
  color: #2a1b0b;
  box-shadow: 0 12px 25px rgba(247, 199, 107, 0.35);
}

button.ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: none;
}

button.ghost[aria-pressed="true"] {
  border-color: var(--danger);
  color: var(--danger);
}

.stage {
  position: relative;
  background: linear-gradient(180deg, rgba(15, 20, 31, 0.9), rgba(8, 11, 18, 0.95));
  border-radius: 22px;
  padding: 12px;
  box-shadow: 0 30px 60px var(--shadow);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

canvas {
  width: 100%;
  height: 70vh;
  min-height: 360px;
  border-radius: 18px;
  display: block;
  touch-action: manipulation;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), transparent 45%),
    radial-gradient(circle at 50% 20%, rgba(79, 209, 197, 0.08), transparent 45%),
    #0a0f1a;
}

.overlay {
  position: absolute;
  inset: 12px;
  border-radius: 18px;
  display: grid;
  place-content: center;
  text-align: center;
  background: rgba(9, 12, 18, 0.62);
  backdrop-filter: blur(3px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms ease;
}

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

.overlay h2 {
  margin: 0 0 6px;
  font-size: clamp(24px, 3vw, 32px);
}

.overlay p {
  margin: 0;
  color: var(--muted);
}

.feedback {
  position: absolute;
  top: 20px;
  left: 50%;
  transform: translateX(-50%) scale(0.9);
  padding: 8px 16px;
  border-radius: 999px;
  background: rgba(79, 209, 197, 0.2);
  color: var(--accent-2);
  font-weight: 800;
  letter-spacing: 0.08em;
  opacity: 0;
  pointer-events: none;
  border: 1px solid rgba(79, 209, 197, 0.45);
}

.feedback.show {
  animation: pop 900ms ease;
}

.footer {
  text-align: center;
  color: var(--muted);
  font-size: 14px;
}

@keyframes pop {
  0% { opacity: 0; transform: translateX(-50%) translateY(6px) scale(0.95); }
  20% { opacity: 1; transform: translateX(-50%) translateY(0) scale(1); }
  70% { opacity: 1; }
  100% { opacity: 0; transform: translateX(-50%) translateY(-10px) scale(1.05); }
}

@media (max-width: 720px) {
  .actions { justify-content: flex-start; }
  .hud { grid-template-columns: repeat(auto-fit, minmax(110px, 1fr)); }
}