/* Dark charcoal palette tokens */
:root {
  --bg-main: #090d16;
  --bg-surface: #131b2e;
  --bg-surface-elevated: #1e293b;
  --border-color: #334155;
  --border-focus: #64748b;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent-red: #e11d48;
  --accent-cyan: #06b6d4;
  --accent-green: #10b981;
  --accent-yellow: #f59e0b;
  --accent-blue: #3b82f6;
  --radius-sm: 4px;
  --radius-md: 8px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

body {
  background-color: var(--bg-main);
  color: var(--text-primary);
  font-family: var(--font-sans);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 12px;
  overflow-x: hidden;
}

.app-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  max-width: 520px;
}

/* Top Arcade Header */
.arcade-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: 8px 12px;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.arcade-title {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--text-primary);
}

.header-controls {
  display: flex;
  gap: 8px;
}

.btn-icon {
  background: var(--bg-surface-elevated);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 4px 8px;
  font-size: 12px;
  font-family: var(--font-sans);
  font-weight: 600;
  cursor: pointer;
}

.btn-icon:hover {
  background: #334155;
}

.btn-icon:focus-visible {
  outline: 2px solid var(--text-primary);
}

/* Score HUD */
.arcade-hud {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  width: 100%;
  padding: 8px 12px;
  background: #0f172a;
  border-left: 1px solid var(--border-color);
  border-right: 1px solid var(--border-color);
}

.hud-box {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hud-label {
  font-size: 10px;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  letter-spacing: 1px;
}

.hud-value {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
}

.lives-box {
  display: flex;
  gap: 4px;
  margin-top: 4px;
}

.life-vaus {
  display: inline-block;
  width: 14px;
  height: 5px;
  background: #e2e8f0;
  border-radius: 2px;
  border: 1px solid #94a3b8;
}

.powerup-badge {
  grid-column: span 4;
  text-align: center;
  font-size: 11px;
  font-family: var(--font-mono);
  font-weight: 700;
  color: #ffffff;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  margin-top: 4px;
}

/* Game Canvas Container */
.canvas-container {
  position: relative;
  width: 100%;
  aspect-ratio: 448 / 560;
  background: #020617;
  border-left: 1px solid var(--border-color);
  border-right: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  overflow: hidden;
}

#gameCanvas {
  width: 100%;
  height: 100%;
  display: block;
  image-rendering: pixelated;
}

/* Screen Overlays */
.overlay-screen {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(9, 13, 22, 0.92);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 24px;
  text-align: center;
  z-index: 10;
}

.overlay-screen.hidden {
  display: none;
}

.overlay-title {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 800;
  letter-spacing: 3px;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.overlay-subtitle {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.score-display {
  font-family: var(--font-mono);
  font-size: 16px;
  margin-bottom: 20px;
  color: var(--accent-yellow);
}

.action-btn {
  background: var(--text-primary);
  color: var(--bg-main);
  border: none;
  padding: 10px 24px;
  font-size: 14px;
  font-weight: 700;
  border-radius: var(--radius-sm);
  cursor: pointer;
  margin-bottom: 10px;
}

.action-btn:hover {
  background: #e2e8f0;
}

.action-btn:focus-visible {
  outline: 2px solid var(--accent-cyan);
}

.secondary-btn {
  background: var(--bg-surface-elevated);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 8px 18px;
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.secondary-btn:hover {
  background: #334155;
}

.input-row {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.name-input {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 14px;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  width: 90px;
  text-align: center;
}

.name-input:focus {
  outline: 2px solid var(--text-primary);
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.75);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
  padding: 16px;
}

.modal-overlay.hidden {
  display: none;
}

.modal-content {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  max-width: 440px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-title {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--text-primary);
}

.modal-body {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 18px;
}

.help-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
}

.help-item {
  background: var(--bg-surface-elevated);
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.capsule-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 10px;
}

.capsule-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
}

.capsule-chip {
  display: inline-block;
  width: 22px;
  height: 14px;
  border-radius: 7px;
  border: 1px solid #fff;
  color: #fff;
  font-size: 9px;
  font-weight: bold;
  text-align: center;
  line-height: 12px;
  font-family: var(--font-mono);
}

.scores-table {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 12px;
}

.score-row {
  display: flex;
  justify-content: space-between;
  padding: 6px 12px;
  background: var(--bg-surface-elevated);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 13px;
}

/* Mobile Virtual Controls */
.mobile-controls {
  display: flex;
  justify-content: space-between;
  width: 100%;
  margin-top: 12px;
  gap: 8px;
}

.mobile-dpad {
  display: flex;
  gap: 8px;
}

.mobile-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 12px 18px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 14px;
  border-radius: var(--radius-sm);
  touch-action: manipulation;
}

.mobile-btn:active {
  background: var(--bg-surface-elevated);
}

.mobile-action-btn {
  flex-grow: 1;
  background: #1e293b;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  border-radius: var(--radius-sm);
  touch-action: manipulation;
}

.mobile-action-btn:active {
  background: #334155;
}

.footer-branding {
  margin-top: 14px;
  font-size: 11px;
  color: var(--text-muted);
}