@import url('https://fonts.googleapis.com/css2?family=Fredoka:wght@300;400;500;600;700&family=M+PLUS+Rounded+1c:wght@400;500;700;900&display=swap');

:root {
  /* Cheerful Light Color Palette */
  --bg-primary: #f0f4f8;
  --bg-secondary: #ffffff;
  --bg-tertiary: #e1e8f0;
  --card-bg: #ffffff;
  --card-border: #dbe3eb;
  
  --text-primary: #2c3e50;
  --text-secondary: #5a6e7f;
  --text-muted: #8fa0b0;

  --accent-cyan: #3a86c8; /* Sky Blue */
  --accent-cyan-glow: rgba(58, 134, 200, 0.15);
  --accent-purple: #8338ec; /* Friendly Violet */
  --accent-purple-glow: rgba(131, 56, 236, 0.15);
  --accent-pink: #ff006e; /* Coral Pink */
  --accent-pink-glow: rgba(255, 0, 110, 0.15);
  --accent-green: #38b000; /* Apple Green */
  --accent-green-glow: rgba(56, 176, 0, 0.15);
  --accent-yellow: #ffbe0b; /* Sunny Yellow */
  --accent-yellow-glow: rgba(255, 190, 11, 0.25);
  --accent-orange: #ff7849; /* Juicy Orange */
  --accent-orange-glow: rgba(255, 120, 73, 0.15);
  
  --shadow-sm: 0 4px 8px rgba(140, 155, 170, 0.08);
  --shadow-md: 0 8px 20px rgba(140, 155, 170, 0.12);
  --shadow-lg: 0 16px 36px rgba(140, 155, 170, 0.18);
  
  --font-family: 'Fredoka', 'M PLUS Rounded 1c', sans-serif;
  --transition-fast: 0.15s cubic-bezier(0.2, 0.8, 0.2, 1);
  --transition-normal: 0.25s cubic-bezier(0.2, 0.8, 0.2, 1);
  --transition-slow: 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-family);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
  display: flex;
  flex-direction: column;
  line-height: 1.6;
}

/* Playful pastel background shapes */
body::before {
  content: '';
  position: absolute;
  top: -5%;
  left: -5%;
  width: 40%;
  height: 40%;
  background: radial-gradient(circle, rgba(58, 134, 200, 0.08) 0%, transparent 70%);
  z-index: -2;
  filter: blur(60px);
  pointer-events: none;
}

body::after {
  content: '';
  position: absolute;
  bottom: -5%;
  right: -5%;
  width: 50%;
  height: 50%;
  background: radial-gradient(circle, rgba(255, 190, 11, 0.08) 0%, transparent 70%);
  z-index: -2;
  filter: blur(80px);
  pointer-events: none;
}

/* Scrollbar Customization */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--bg-tertiary);
  border-radius: 6px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Header & Navigation */
header {
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 3px solid var(--bg-tertiary);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-yellow));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 10px rgba(58, 134, 200, 0.2);
}

.logo-icon svg {
  fill: #fff;
  width: 24px;
  height: 24px;
}

.logo-text {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text-primary);
}

.logo-text span {
  color: var(--accent-cyan);
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.icon-btn {
  background: #ffffff;
  border: 2px solid var(--card-border);
  color: var(--text-secondary);
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.icon-btn:hover {
  background: var(--bg-primary);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  transform: scale(1.05);
}

/* Layout container */
main {
  flex: 1;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* Dashboard Section */
.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 900px) {
  .dashboard-grid {
    grid-template-columns: 2fr 1fr;
  }
}

/* Playful Card Component */
.glass-card {
  background: var(--card-bg);
  border: 3px solid var(--card-border);
  border-radius: 24px;
  padding: 2rem;
  box-shadow: var(--shadow-md);
  transition: var(--transition-normal);
  position: relative;
}

.glass-card:hover {
  border-color: var(--text-muted);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

/* Profile / Overview Panel */
.overview-card {
  overflow: hidden;
  background: #ffffff;
}

.profile-header {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.brain-age-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 105px;
  height: 105px;
  background: var(--bg-primary);
  border: 4px solid var(--accent-cyan);
  border-radius: 50%;
  box-shadow: 0 4px 15px rgba(58, 134, 200, 0.15);
  position: relative;
}

.brain-age-val {
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--accent-cyan);
  line-height: 1;
}

.brain-age-lbl {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 600;
  margin-top: 2px;
}

.user-info h2 {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.user-info p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Cheerful Statistics Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.stat-item {
  background: var(--bg-primary);
  border: 2px solid var(--card-border);
  padding: 1.25rem;
  border-radius: 18px;
  text-align: center;
  transition: var(--transition-fast);
}

.stat-item:hover {
  background: var(--bg-tertiary);
  border-color: var(--text-muted);
}

.stat-value {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.stat-value.cyan { color: var(--accent-cyan); }
.stat-value.purple { color: var(--accent-purple); }
.stat-value.pink { color: var(--accent-pink); }

.stat-label {
  font-size: 0.82rem;
  color: var(--text-secondary);
  font-weight: 600;
}

/* Game Selection Grid */
.game-selector-section {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.section-title {
  font-size: 1.4rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-primary);
}

.section-title::after {
  content: '';
  flex: 1;
  height: 3px;
  background: var(--bg-tertiary);
  border-radius: 2px;
}

.games-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 600px) {
  .games-list {
    grid-template-columns: repeat(3, 1fr);
  }
}

.game-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  cursor: pointer;
  border-width: 3px;
}

.game-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 6px;
}

.game-card.cyan::before { background: var(--accent-cyan); }
.game-card.purple::before { background: var(--accent-purple); }
.game-card.pink::before { background: var(--accent-pink); }
.game-card.orange::before { background: var(--accent-orange); }

.game-icon-wrapper {
  width: 54px;
  height: 54px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.cyan .game-icon-wrapper {
  background: rgba(58, 134, 200, 0.1);
  border: 2px solid rgba(58, 134, 200, 0.2);
  color: var(--accent-cyan);
}

.purple .game-icon-wrapper {
  background: rgba(131, 56, 236, 0.1);
  border: 2px solid rgba(131, 56, 236, 0.2);
  color: var(--accent-purple);
}

.pink .game-icon-wrapper {
  background: rgba(255, 0, 110, 0.1);
  border: 2px solid rgba(255, 0, 110, 0.2);
  color: var(--accent-pink);
}

.orange .game-icon-wrapper {
  background: rgba(255, 120, 73, 0.1);
  border: 2px solid rgba(255, 120, 73, 0.2);
  color: var(--accent-orange);
}

.game-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.game-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
  flex: 1;
}

.game-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1rem;
  border-top: 2px solid var(--bg-primary);
}

.high-score-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 700;
}

.high-score-val {
  font-size: 1.2rem;
  font-weight: 700;
}

.cyan .high-score-val { color: var(--accent-cyan); }
.purple .high-score-val { color: var(--accent-purple); }
.pink .high-score-val { color: var(--accent-pink); }
.orange .high-score-val { color: var(--accent-orange); }

.play-action-btn {
  background: transparent;
  border: none;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition-fast);
}

.game-card:hover .play-action-btn {
  transform: translateX(4px);
}

.cyan:hover {
  border-color: var(--accent-cyan);
  box-shadow: 0 8px 24px rgba(58, 134, 200, 0.12);
}
.purple:hover {
  border-color: var(--accent-purple);
  box-shadow: 0 8px 24px rgba(131, 56, 236, 0.12);
}
.pink:hover {
  border-color: var(--accent-pink);
  box-shadow: 0 8px 24px rgba(255, 0, 110, 0.12);
}
.orange:hover {
  border-color: var(--accent-orange);
  box-shadow: 0 8px 24px rgba(255, 120, 73, 0.12);
}

/* History List / Sidebar */
.history-section {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.history-card {
  padding: 1.5rem;
}

.history-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-height: 380px;
  overflow-y: auto;
  padding-right: 0.25rem;
}

.history-empty {
  text-align: center;
  color: var(--text-muted);
  padding: 3rem 0;
}

.history-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1rem;
  border-radius: 16px;
  background: var(--bg-primary);
  border: 2px solid var(--card-border);
  transition: var(--transition-fast);
}

.history-item:hover {
  background: var(--bg-tertiary);
  transform: translateX(2px);
}

.history-badge {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.history-badge.cyan { background-color: var(--accent-cyan); }
.history-badge.purple { background-color: var(--accent-purple); }
.history-badge.pink { background-color: var(--accent-pink); }
.history-badge.orange { background-color: var(--accent-orange); }

.history-info {
  flex: 1;
}

.history-name {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

.history-date {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

.history-score {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* Play Zone Overlay - Screen Transitions */
.screen {
  display: none;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity var(--transition-normal), transform var(--transition-normal);
}

.screen.active {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

.screen-container {
  max-width: 800px;
  margin: 0 auto;
}

.game-header-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.btn {
  background: #ffffff;
  border: 2px solid var(--card-border);
  color: var(--text-primary);
  padding: 0.75rem 1.5rem;
  border-radius: 16px;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.btn:hover {
  background: var(--bg-primary);
  border-color: var(--text-secondary);
}

.btn-primary {
  background: var(--accent-yellow);
  border: 2px solid var(--accent-yellow);
  color: var(--text-primary);
  box-shadow: 0 4px 12px rgba(255, 190, 11, 0.25);
}

.btn-primary:hover {
  background: #ffa800;
  border-color: #ffa800;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(255, 190, 11, 0.35);
}

.score-stats {
  display: flex;
  gap: 1rem;
}

.stats-bubble {
  background: #ffffff;
  border: 2px solid var(--card-border);
  padding: 0.5rem 1.25rem;
  border-radius: 20px;
  font-size: 0.95rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: var(--shadow-sm);
}

.stats-bubble span {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--accent-cyan);
}

/* Playful Timers */
.timer-container {
  width: 100%;
  height: 8px;
  background: var(--bg-tertiary);
  border-radius: 4px;
  margin-bottom: 2.5rem;
  overflow: hidden;
  position: relative;
  border: 1px solid var(--card-border);
}

.timer-bar {
  height: 100%;
  background: var(--accent-cyan);
  width: 100%;
  transition: width 0.1s linear;
}

.timer-bar.warning {
  background: var(--accent-pink);
}

/* General Stage Wrapper */
.stage-wrapper {
  min-height: 380px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  position: relative;
  background: #ffffff;
  border-width: 3px;
}

/* Cheerful Overlay Instructions */
.intro-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.96);
  z-index: 10;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  border-radius: 20px;
  padding: 2rem;
  backdrop-filter: blur(4px);
}

.intro-overlay h2 {
  font-size: 2.2rem;
  margin-bottom: 1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.intro-overlay p {
  color: var(--text-secondary);
  max-width: 500px;
  margin-bottom: 2rem;
  font-size: 1.05rem;
}

/* Counting Down Screen */
.countdown-val {
  font-size: 6rem;
  font-weight: 800;
  color: var(--accent-yellow);
  animation: pulse-zoom 1s infinite alternate;
}

@keyframes pulse-zoom {
  0% { transform: scale(0.85); }
  100% { transform: scale(1.15); }
}

/* Game 1: Arithmetic Rush Stage CSS */
.math-board {
  text-align: center;
  margin-bottom: 1.5rem;
  width: 100%;
}

.math-equation {
  font-size: 4rem;
  font-weight: 700;
  letter-spacing: 1px;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
  display: inline-block;
}

.math-options {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  width: 100%;
  max-width: 500px;
  margin: 0 auto;
}

.option-btn {
  background: #ffffff;
  border: 3px solid var(--card-border);
  color: var(--text-primary);
  padding: 1.5rem;
  border-radius: 20px;
  font-size: 1.6rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.option-btn:hover {
  background: var(--bg-primary);
  border-color: var(--accent-cyan);
  transform: translateY(-3px);
  box-shadow: 0 6px 15px rgba(58, 134, 200, 0.15);
}

.option-btn:active {
  transform: translateY(1px);
}

/* Game 2: Stroop / Focus Colors */
.stroop-board {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
  width: 100%;
}

.stroop-instruction {
  font-size: 1.25rem;
  color: var(--text-secondary);
  font-weight: 700;
  background: var(--bg-primary);
  padding: 0.5rem 1.75rem;
  border-radius: 30px;
  border: 2px solid var(--card-border);
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.stroop-instruction.mode-color {
  border-color: var(--accent-cyan);
  background: rgba(58, 134, 200, 0.08);
  color: var(--accent-cyan);
}

.stroop-instruction.mode-meaning {
  border-color: var(--accent-purple);
  background: rgba(131, 56, 236, 0.08);
  color: var(--accent-purple);
}

.stroop-word {
  font-size: 4.8rem;
  font-weight: 700;
  letter-spacing: 1px;
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.stroop-options {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  width: 100%;
  max-width: 500px;
  margin: 0 auto;
}

.stroop-btn {
  background: #ffffff;
  border: 3px solid var(--card-border);
  color: var(--text-primary);
  padding: 1.25rem;
  border-radius: 20px;
  font-size: 1.3rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.stroop-btn:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.stroop-btn.opt-red:hover { border-color: #ff3b30; color: #ff3b30; background: rgba(255, 59, 48, 0.05); }
.stroop-btn.opt-blue:hover { border-color: #0a84ff; color: #0a84ff; background: rgba(10, 132, 255, 0.05); }
.stroop-btn.opt-green:hover { border-color: #38b000; color: #38b000; background: rgba(56, 176, 0, 0.05); }
.stroop-btn.opt-yellow:hover { border-color: #ffbe0b; color: #b58500; background: rgba(255, 190, 11, 0.05); }

#stage-math, #stage-stroop, #stage-memory, #stage-number {
  width: 100%;
}

.number-instruction {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  background: var(--bg-primary);
  padding: 0.5rem 1.75rem;
  border-radius: 30px;
  border: 2px solid var(--card-border);
  display: inline-block;
}

.number-instruction span {
  color: var(--accent-orange);
  font-size: 1.7rem;
  font-weight: 800;
  margin-left: 0.25rem;
}

.grid-tile.number-tile {
  font-size: 1.9rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.grid-tile.number-tile.pressed {
  background: var(--bg-tertiary);
  border-color: var(--card-border);
  color: var(--text-muted);
  box-shadow: none;
  cursor: default;
  pointer-events: none;
  transform: none;
}

/* Game 3: Spatial Matrix / Grid Memory */
.grid-board {
  display: grid;
  gap: 10px;
  background: var(--bg-primary);
  padding: 16px;
  border-radius: 24px;
  border: 3px solid var(--card-border);
  box-shadow: inset 0 2px 8px rgba(0,0,0,0.05);
  margin: 0 auto;
  transition: var(--transition-normal);
}

.grid-tile {
  background: #ffffff;
  border: 2px solid var(--card-border);
  border-radius: 18px;
  cursor: pointer;
  transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  aspect-ratio: 1;
}

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

/* Cheerful states of grid tiles */
.grid-tile.active-show {
  background: var(--accent-yellow);
  border-color: var(--accent-yellow);
  box-shadow: 0 4px 12px rgba(255, 190, 11, 0.35);
  transform: scale(0.96);
}

.grid-tile.correct {
  background: var(--accent-green);
  border-color: var(--accent-green);
  box-shadow: 0 4px 12px rgba(56, 176, 0, 0.35);
  transform: scale(0.96);
}

.grid-tile.incorrect {
  background: var(--accent-pink);
  border-color: var(--accent-pink);
  box-shadow: 0 4px 12px rgba(255, 0, 110, 0.35);
  animation: shake 0.3s;
}

/* Shake Animation */
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  75% { transform: translateX(6px); }
}

.combo-badge {
  position: absolute;
  top: -24px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent-pink);
  background: rgba(255, 0, 110, 0.08);
  padding: 0.35rem 1.25rem;
  border-radius: 30px;
  border: 2px solid var(--accent-pink);
  opacity: 0;
  transform: translateY(10px);
  transition: transform 0.2s, opacity 0.2s;
  pointer-events: none;
}

.combo-badge.active {
  opacity: 1;
  transform: translateY(0);
}

/* Game 6: Card Match */
.grid-tile.card-tile {
  font-size: 1.5rem;
  background: var(--bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.2s, background 0.2s;
}

.grid-tile.card-tile.flipped {
  background: #ffffff;
  transform: rotateY(180deg);
}

.grid-tile.card-tile.matched {
  background: var(--accent-green);
  color: white;
  pointer-events: none;
}

.grid-tile.card-tile.incorrect {
  background: var(--accent-pink);
  animation: shake 0.3s;
}
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(44, 62, 80, 0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

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

.modal-content {
  background: #ffffff;
  border: 3px solid var(--card-border);
  border-radius: 28px;
  width: 90%;
  max-width: 500px;
  padding: 2.5rem;
  box-shadow: var(--shadow-lg);
  transform: scale(0.95);
  transition: transform var(--transition-normal);
}

.modal.active .modal-content {
  transform: scale(1);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.modal-header h3 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-primary);
}

.close-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 2rem;
  cursor: pointer;
  transition: var(--transition-fast);
}

.close-btn:hover {
  color: var(--text-primary);
  transform: scale(1.1);
}

.settings-group {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.settings-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.settings-label {
  display: flex;
  flex-direction: column;
}

.settings-title {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-primary);
}

.settings-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* Playful switch toggle */
.switch {
  position: relative;
  display: inline-block;
  width: 54px;
  height: 30px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--bg-tertiary);
  border: 2px solid var(--card-border);
  transition: .25s;
  border-radius: 34px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 20px;
  width: 20px;
  left: 4px;
  bottom: 3px;
  background-color: white;
  transition: .25s;
  border-radius: 50%;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

input:checked + .slider {
  background-color: var(--accent-cyan);
  border-color: var(--accent-cyan);
}

input:checked + .slider:before {
  transform: translateX(24px);
}

/* Footer Section */
footer {
  text-align: center;
  padding: 2.5rem 1.5rem;
  border-top: 3px solid var(--bg-tertiary);
  color: var(--text-muted);
  font-size: 0.88rem;
  margin-top: auto;
  background: rgba(255,255,255,0.4);
}

footer a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition-fast);
}

footer a:hover {
  color: var(--accent-cyan);
}

/* Game Over Card Details */
.game-over-panel {
  text-align: center;
  padding: 2rem 1.5rem;
}

.game-over-title {
  font-size: 2.8rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--accent-pink);
}

.game-over-stats {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 3rem;
}

.go-stat-box {
  background: var(--bg-primary);
  border: 3px solid var(--card-border);
  border-radius: 20px;
  padding: 1.5rem 2.5rem;
  min-width: 150px;
  box-shadow: var(--shadow-sm);
}

.go-stat-val {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--accent-cyan);
}

.go-stat-lbl {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
  font-weight: 600;
}

.game-over-actions {
  display: flex;
  justify-content: center;
  gap: 1.25rem;
}

.new-record-tag {
  display: inline-block;
  background: var(--accent-yellow);
  color: var(--text-primary);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.35rem 1rem;
  border-radius: 20px;
  margin-bottom: 0.75rem;
  box-shadow: 0 4px 10px rgba(255, 190, 11, 0.3);
}

/* Visual Flash Effect on Correct/Wrong */
.flash-feedback {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: 20px;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s ease-out;
  z-index: 5;
}

.flash-feedback.correct {
  background: radial-gradient(circle, rgba(56, 176, 0, 0.08) 0%, transparent 80%);
  border: 3px solid var(--accent-green);
  opacity: 1;
}

.flash-feedback.incorrect {
  background: radial-gradient(circle, rgba(255, 0, 110, 0.08) 0%, transparent 80%);
  border: 3px solid var(--accent-pink);
  opacity: 1;
}