:root {
  color-scheme: dark;
  --bg: #070b12;
  --panel: #111827;
  --panel-alt: #1e293b;
  --border: #334155;
  --text: #f8fafc;
  --muted: #94a3b8;
  --brand: #f97316;
  --gold: #fde047;
  --emerald: #34d399;
  --crimson: #ef4444;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  width: 100%;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  overflow: hidden;
  user-select: none;
}

button {
  font: inherit;
  color: inherit;
  cursor: pointer;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

#app {
  display: flex;
  flex-direction: column;
  width: 100%;
  height: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 6px 10px;
  gap: 6px;
}

body.is-fullscreen #app {
  max-width: 100%;
  padding: 4px 8px;
  gap: 4px;
}

body.is-fullscreen .legend {
  display: none;
}

/* Header HUD */
#hud {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 4px 10px;
  flex-shrink: 0;
}

.title-block h1 {
  margin: 0;
  font-size: 15px;
  font-weight: 800;
  color: var(--gold);
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.subtitle {
  margin: 0;
  font-size: 11px;
  color: var(--muted);
}

.meters {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.meter {
  display: flex;
  align-items: baseline;
  gap: 4px;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--muted);
}

.meter strong {
  font-size: 12.5px;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

/* 16:9 Stage & Contained Canvas */
#stage {
  position: relative;
  container-type: size;
  flex: 1 1 auto;
  min-width: 0;
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #030712;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  padding: 2px;
}

#game {
  display: block;
  width: min(100cqw, calc(100cqh * 16 / 9));
  height: min(100cqh, calc(100cqw * 9 / 16));
  max-width: 100%;
  max-height: 100%;
  aspect-ratio: 960 / 540;
  border-radius: 6px;
  outline: none;
  cursor: crosshair;
}

/* Controls & Mission Bar */
#controls {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 10px;
  flex-shrink: 0;
}

.status-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
}

#promptText {
  margin: 0;
  font-size: 11.5px;
  color: var(--gold);
  font-weight: 600;
}

#missionSelect {
  display: flex;
  align-items: center;
  gap: 4px;
}

.mission-label {
  font-size: 10.5px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-right: 2px;
}

.mission-btn {
  background: var(--panel-alt);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 2px 7px;
  font-size: 11px;
  font-weight: 700;
  color: var(--muted);
}

.mission-btn.active {
  background: var(--brand);
  border-color: var(--gold);
  color: #090d16;
}

.button-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
}

.action-group,
#touchPad {
  display: flex;
  align-items: center;
  gap: 5px;
  flex-wrap: wrap;
}

.action-group button,
#touchPad button {
  background: var(--panel-alt);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 9px;
  font-size: 11.5px;
  font-weight: 600;
  transition: border-color 0.15s, background 0.15s;
}

.action-group button:hover:not(:disabled),
#touchPad button:hover:not(:disabled) {
  border-color: var(--gold);
}

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

.action-group button.primary {
  background: var(--brand);
  border-color: #fb923c;
  color: #090d16;
  font-weight: 800;
}

.action-group button.accent,
#touchPad button.pad-fire {
  background: #dc2626;
  border-color: #f87171;
  color: #ffffff;
}

#touchPad button.pad-bomb {
  background: #d97706;
  border-color: #fbbf24;
  color: #090d16;
}

#touchPad button.pad-jump {
  background: #0284c7;
  border-color: #38bdf8;
  color: #ffffff;
}

.legend {
  margin: 0;
  font-size: 10.5px;
  color: var(--muted);
  line-height: 1.35;
}

kbd {
  display: inline-block;
  padding: 0 4px;
  font-size: 10px;
  font-family: ui-monospace, monospace;
  background: var(--panel-alt);
  border: 1px solid var(--border);
  border-radius: 3px;
  color: var(--text);
}

@media (max-width: 640px) {
  #app {
    padding: 2px 4px;
    gap: 2px;
  }

  #hud {
    padding: 2px 6px;
    gap: 4px;
  }

  .title-block h1 {
    font-size: 11.5px;
  }

  .subtitle,
  .status-row,
  .legend {
    display: none;
  }

  .meters {
    gap: 5px;
  }

  .meter {
    font-size: 8.5px;
  }

  .meter strong {
    font-size: 10px;
  }

  #stage {
    min-height: 48px;
  }

  #controls {
    padding: 2px 6px;
    gap: 2px;
  }

  .action-group,
  #touchPad {
    gap: 3px;
  }

  .action-group button,
  #touchPad button {
    padding: 1px 5px;
    font-size: 9.5px;
  }
}