:root {
  --bg-primary: #110c22;
  --bg-gradient: radial-gradient(circle at center, #271442 0%, #0d071a 100%);
  --bg-card: rgba(43, 20, 77, 0.7);
  --border-color: rgba(168, 85, 247, 0.3);
  --accent-neon: #a855f7; /* Violet */
  --accent-cyan: #06b6d4;
  --accent-gold: #fbbf24;
  --text-primary: #ffffff;
  --text-secondary: #c084fc;
  --font-family: 'Outfit', sans-serif;
  --header-height: 56px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  overflow: hidden;
  height: 100vh;
  width: 100vw;
  display: flex;
  justify-content: center;
  align-items: center;
}

.arcade-app {
  display: flex;
  flex-direction: column;
  width: 100%;
  height: 100%;
  background: var(--bg-gradient);
  position: relative;
  overflow: hidden;
  padding-top: 80px;
}

/* Header */
.app-header {
  height: var(--header-height);
  background: rgba(13, 7, 26, 0.85);
  border-bottom: 1px solid var(--border-color);
  padding: 0 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 100;
  flex-shrink: 0;
}

.app-header h2 {
  font-size: 17px;
  font-weight: 900;
  letter-spacing: -0.5px;
  text-shadow: 0 0 8px var(--accent-neon);
}

.hud-back-btn {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border-color);
  color: #fff;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.header-right {
  font-size: 14px;
  font-weight: 700;
  color: var(--accent-gold);
}

/* Viewport and views */
.app-viewport {
  flex-grow: 1;
  position: relative;
  overflow: hidden;
}

.arcade-view {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
}

.arcade-view.active {
  opacity: 1;
  pointer-events: auto;
}

/* Dashboard Selector grid */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  max-width: 480px;
  margin: 0 auto;
  width: 100%;
  padding-bottom: 20px;
}

.game-select-card {
  background: var(--bg-card);
  border: 1.5px solid var(--border-color);
  border-radius: 20px;
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  cursor: pointer;
  transition: transform 0.2s, border-color 0.2s;
  box-shadow: 0 6px 18px rgba(0,0,0,0.3);
  position: relative;
}

.game-select-card:hover {
  border-color: var(--accent-cyan);
}

.game-select-card:active {
  transform: scale(0.96);
}

.game-badge {
  position: absolute;
  top: 8px;
  right: 8px;
  font-size: 8px;
  background: var(--accent-neon);
  color: #fff;
  padding: 2px 6px;
  border-radius: 8px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.game-select-emoji {
  font-size: 40px;
  margin-bottom: 8px;
  filter: drop-shadow(0 4px 8px rgba(0,0,0,0.3));
}

.game-select-card h3 {
  font-size: 14px;
  font-weight: 800;
  margin-bottom: 4px;
}

.game-select-card p {
  font-size: 10px;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* Game engine containers */
.game-engine-panel {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  width: 100%;
  height: 100%;
}

.game-engine-panel.active {
  display: flex;
}

.mini-hud {
  display: flex;
  justify-content: space-around;
  width: 100%;
  max-width: 300px;
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--border-color);
  padding: 8px 16px;
  border-radius: 16px;
  font-size: 13px;
  color: var(--text-secondary);
}

.mini-hud strong {
  color: #fff;
}

/* 2.1 Clicker Game styles */
.clicker-arena {
  flex-grow: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.clicker-gold-coin {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #fff176 0%, #fbc02d 40%, #f57f17 80%);
  border: 5px solid #fff176;
  box-shadow: 0 0 25px rgba(251, 192, 45, 0.5), inset 0 4px 8px rgba(255,255,255,0.6);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 64px;
  font-weight: 900;
  color: #f57f17;
  user-select: none;
  transition: transform 0.05s;
}

.clicker-gold-coin:active {
  transform: scale(0.9);
}

/* 2.2 Stacker Game styles */
.stacker-arena, .helix-arena {
  background: #090615;
  border: 2px solid var(--border-color);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 0 15px rgba(168,85,247,0.15);
}

#stacker-canvas, #helix-canvas {
  display: block;
}

.action-btn {
  width: 100%;
  max-width: 300px;
  background: linear-gradient(135deg, var(--accent-neon), var(--accent-cyan));
  color: white;
  border: none;
  border-radius: 12px;
  padding: 14px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
}

.action-btn:active {
  transform: scale(0.98);
}

/* 2.3 Memory Grid Styles */
.memory-arena {
  flex-grow: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.memory-grid-wrapper {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  width: 240px;
  height: 240px;
}

.memory-tile {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  cursor: pointer;
  transition: background-color 0.15s, transform 0.1s;
}

.memory-tile:active {
  transform: scale(0.92);
}

.memory-tile.blink {
  background: var(--accent-cyan);
  box-shadow: 0 0 15px var(--accent-cyan);
}

.memory-tile.correct {
  background: #10b981;
  box-shadow: 0 0 15px #10b981;
}

.memory-tile.wrong {
  background: #ef4444;
  box-shadow: 0 0 15px #ef4444;
}

.game-instructions {
  font-size: 12px;
  color: var(--text-secondary);
  text-align: center;
}

/* 2.4 Helix Avoid controls */
.helix-controls {
  display: flex;
  gap: 16px;
  width: 100%;
  max-width: 300px;
}

.control-btn {
  flex-grow: 1;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border-color);
  color: #fff;
  font-family: var(--font-family);
  font-size: 13px;
  font-weight: 700;
  padding: 12px;
  border-radius: 12px;
  cursor: pointer;
}

.control-btn:active {
  background: rgba(255,255,255,0.08);
}

/* Modal Overlay */
.overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(13,7,26,0.9);
  backdrop-filter: blur(5px);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
}

.gameover-card {
  width: 85%;
  max-width: 320px;
  background: rgba(43,20,77,0.8);
  border: 1.5px solid var(--border-color);
  border-radius: 24px;
  padding: 24px;
  text-align: center;
  box-shadow: 0 0 30px rgba(168,85,247,0.3);
}

.gameover-card h2 {
  font-size: 28px;
  color: var(--accent-cyan);
  text-shadow: 0 0 8px var(--accent-cyan);
  margin-bottom: 8px;
}

.gameover-card p {
  font-size: 12px;
  color: var(--text-secondary);
}

.secondary-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-family: var(--font-family);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
}