:root {
  --bg: #0b0f1a;
  --panel: rgba(255, 255, 255, 0.06);
  --panel2: rgba(255, 255, 255, 0.09);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.65);
  --muted2: rgba(255, 255, 255, 0.45);
  --accent: rgba(120, 170, 255, 0.95);
  --danger: rgba(255, 120, 120, 0.95);
  --ok: rgba(255, 220, 140, 0.95);
  --good: rgba(160, 255, 190, 0.95);
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
  --radius: 14px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
  font-family: var(--sans);
  background: radial-gradient(1200px 800px at 30% 10%, rgba(120,170,255,0.15), transparent 60%),
              radial-gradient(900px 700px at 80% 60%, rgba(255,160,200,0.12), transparent 60%),
              var(--bg);
  color: var(--text);
}

#app {
  height: 100%;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 12px;
  padding: 14px;
  max-width: 1200px;
  margin: 0 auto;
}

#topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--panel);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius);
  padding: 12px 14px;
  box-shadow: var(--shadow);
}

.title {
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.2px;
}

.subtitle {
  margin-top: 2px;
  font-size: 12px;
  color: var(--muted);
}

.right {
  display: flex;
  gap: 8px;
}

button {
  appearance: none;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.08);
  color: var(--text);
  border-radius: 12px;
  padding: 10px 12px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 80ms ease, background 120ms ease, border-color 120ms ease;
}

button:hover {
  background: rgba(255,255,255,0.12);
  border-color: rgba(255,255,255,0.2);
}

button:active { transform: translateY(1px); }

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

#stage {
  position: relative;
  background: var(--panel);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

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

#hud {
  position: absolute;
  top: 10px;
  left: 10px;
  background: rgba(0,0,0,0.25);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: 12px;
  padding: 10px 12px;
  backdrop-filter: blur(6px);
  min-width: 240px;
}

.hud-row {
  display: flex;
  gap: 14px;
  align-items: center;
  justify-content: flex-start;
  font-weight: 600;
}

.hud-row.small {
  margin-top: 6px;
  font-weight: 500;
  color: var(--muted);
  gap: 10px;
}

#hud span {
  font-family: var(--mono);
}

kbd {
  font-family: var(--mono);
  font-size: 0.9em;
  padding: 2px 6px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.08);
}

#centerPrompt {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  pointer-events: none;
}

.promptCard {
  pointer-events: none;
  background: rgba(0,0,0,0.40);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: 16px;
  padding: 16px 18px;
  max-width: 460px;
  text-align: center;
  backdrop-filter: blur(8px);
}

.promptTitle {
  font-weight: 800;
  font-size: 20px;
  margin-bottom: 6px;
}

.promptText {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.4;
}

.promptText.subtle {
  margin-top: 6px;
  color: var(--muted2);
}

.promptHint {
  margin-top: 10px;
  font-weight: 700;
  color: rgba(120,170,255,0.95);
}

#toast {
  position: absolute;
  right: 14px;
  bottom: 14px;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(0,0,0,0.28);
  backdrop-filter: blur(6px);
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 150ms ease, transform 150ms ease;
  max-width: 48ch;
}

#toast.show {
  opacity: 1;
  transform: translateY(0);
}

#footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--panel);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius);
  padding: 10px 14px;
  box-shadow: var(--shadow);
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.10);
  background: rgba(255,255,255,0.06);
  color: var(--muted);
  font-size: 12px;
  margin-right: 8px;
}

.small {
  font-size: 12px;
  color: var(--muted);
}

code {
  font-family: var(--mono);
  font-size: 0.95em;
}