/**
 * KidGames Design System
 * A unified, child-friendly design system for all games
 *
 * Features:
 * - Vibrant, playful color palette
 * - Consistent button styles
 * - Unified spacing and typography
 * - Smooth animations and transitions
 */

/* ==========================================
   COLOR PALETTE
   ========================================== */

:root {
  /* Primary Colors - Fun and vibrant */
  --color-primary: #FF6B6B;          /* Coral Red - Main accent */
  --color-primary-light: #FF8E8E;    /* Light Coral */
  --color-primary-dark: #E85555;     /* Dark Coral */

  --color-secondary: #4ECDC4;        /* Turquoise - Secondary accent */
  --color-secondary-light: #6ED8D1;  /* Light Turquoise */
  --color-secondary-dark: #3DB9B0;   /* Dark Turquoise */

  --color-accent: #FFE66D;           /* Sunny Yellow */
  --color-accent-light: #FFED8C;     /* Light Yellow */
  --color-accent-dark: #F5D855;      /* Dark Yellow */

  /* Success & Error Colors */
  --color-success: #95E1A1;          /* Mint Green */
  --color-success-light: #B0E9BA;    /* Light Mint */
  --color-success-dark: #7AD088;     /* Dark Mint */

  --color-error: #FF6B9D;            /* Pink Red */
  --color-error-light: #FF8FB3;      /* Light Pink */
  --color-error-dark: #E85587;       /* Dark Pink */

  /* Neutral Colors */
  --color-background: linear-gradient(135deg, #A8EDEA 0%, #FED6E3 100%);
  --color-background-alt: linear-gradient(135deg, #FFE985 0%, #FA742B 100%);
  --color-background-blue: linear-gradient(135deg, #89CFF0 0%, #B4E4FF 100%);
  --color-background-purple: linear-gradient(135deg, #C3B1E1 0%, #E0BBE4 100%);
  --color-background-rainbow: linear-gradient(135deg, #A8EDEA 0%, #FED6E3 50%, #FFE985 100%);

  --color-white: #FFFFFF;
  --color-off-white: #FAFAFA;
  --color-light-gray: #F0F0F0;
  --color-gray: #CCCCCC;
  --color-dark-gray: #666666;
  --color-text: #333333;
  --color-text-light: #666666;

  /* Game Theme Colors - for variety */
  --color-purple: #A78BFA;           /* Soft Purple */
  --color-blue: #60A5FA;             /* Sky Blue */
  --color-green: #6EE7B7;            /* Mint Green */
  --color-orange: #FBBF24;           /* Warm Orange */
  --color-pink: #F472B6;             /* Playful Pink */

  /* Spacing System */
  --spacing-xs: 0.25rem;   /* 4px */
  --spacing-sm: 0.5rem;    /* 8px */
  --spacing-md: 1rem;      /* 16px */
  --spacing-lg: 1.5rem;    /* 24px */
  --spacing-xl: 2rem;      /* 32px */
  --spacing-2xl: 3rem;     /* 48px */
  --spacing-3xl: 4rem;     /* 64px */

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-2xl: 24px;
  --radius-round: 50%;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.2);
  --shadow-xl: 0 12px 32px rgba(0, 0, 0, 0.25);

  /* Typography */
  --font-family: 'Comic Sans MS', 'Arial Rounded MT Bold', 'Helvetica Rounded', Arial, sans-serif;
  --font-size-xs: 0.75rem;   /* 12px */
  --font-size-sm: 0.875rem;  /* 14px */
  --font-size-md: 1rem;      /* 16px */
  --font-size-lg: 1.125rem;  /* 18px */
  --font-size-xl: 1.5rem;    /* 24px */
  --font-size-2xl: 2rem;     /* 32px */
  --font-size-3xl: 2.5rem;   /* 40px */
  --font-size-4xl: 3rem;     /* 48px */

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;

  /* Z-index layers */
  --z-base: 1;
  --z-dropdown: 10;
  --z-sticky: 100;
  --z-modal: 1000;
  --z-tooltip: 2000;
}

/* ==========================================
   GLOBAL RESETS & BASE STYLES
   ========================================== */

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

body {
  font-family: var(--font-family);
  background: var(--color-background);
  background-attachment: fixed;
  min-height: 100vh;
  color: var(--color-text);
  line-height: 1.6;
}

/* ==========================================
   LAYOUT COMPONENTS
   ========================================== */

.game-container {
  background: var(--color-white);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-2xl);
  box-shadow: var(--shadow-xl);
  max-width: 1200px;
  width: 90%;
  margin: var(--spacing-xl) auto;
}

.game-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.game-header h1 {
  color: var(--color-primary);
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-md);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.game-header p {
  color: var(--color-text-light);
  font-size: var(--font-size-lg);
  line-height: 1.5;
}

.game-section {
  margin-bottom: var(--spacing-xl);
  padding: var(--spacing-lg);
  background: var(--color-light-gray);
  border-radius: var(--radius-lg);
}

.game-section h2 {
  color: var(--color-text);
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-md);
}

/* ==========================================
   BUTTON SYSTEM
   ========================================== */

/* Base button styles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  font-family: var(--font-family);
  font-size: var(--font-size-lg);
  font-weight: 700;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
  box-shadow: var(--shadow-md);
  user-select: none;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: var(--shadow-sm) !important;
}

/* Primary Button - Main actions */
.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: var(--color-white);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
}

/* Secondary Button - Alternative actions */
.btn-secondary {
  background: linear-gradient(135deg, var(--color-secondary), var(--color-secondary-dark));
  color: var(--color-white);
}

.btn-secondary:hover {
  background: linear-gradient(135deg, var(--color-secondary-light), var(--color-secondary));
}

/* Success Button - Positive actions */
.btn-success {
  background: linear-gradient(135deg, var(--color-success), var(--color-success-dark));
  color: var(--color-white);
}

.btn-success:hover {
  background: linear-gradient(135deg, var(--color-success-light), var(--color-success));
}

/* Accent Button - Special highlights */
.btn-accent {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  color: var(--color-text);
}

.btn-accent:hover {
  background: linear-gradient(135deg, var(--color-accent-light), var(--color-accent));
}

/* Outline Button - Subtle actions */
.btn-outline {
  background: var(--color-white);
  color: var(--color-primary);
  border: 3px solid var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

/* Special Purpose Buttons */

/* Record Button */
.btn-record {
  background: linear-gradient(135deg, var(--color-success), var(--color-success-dark));
  color: var(--color-white);
}

.btn-record.recording {
  animation: pulse 1.5s ease-in-out infinite;
}

/* Stop Button */
.btn-stop {
  background: linear-gradient(135deg, var(--color-error), var(--color-error-dark));
  color: var(--color-white);
}

/* Play/Listen Button */
.btn-play {
  background: linear-gradient(135deg, var(--color-purple), #8B5CF6);
  color: var(--color-white);
}

/* New Game Button */
.btn-new-game {
  background: linear-gradient(135deg, var(--color-blue), #3B82F6);
  color: var(--color-white);
  font-size: var(--font-size-xl);
  padding: var(--spacing-lg) var(--spacing-2xl);
}

/* Button Sizes */
.btn-sm {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
}

.btn-lg {
  padding: var(--spacing-lg) var(--spacing-2xl);
  font-size: var(--font-size-xl);
}

.btn-xl {
  padding: var(--spacing-xl) var(--spacing-3xl);
  font-size: var(--font-size-2xl);
}

/* ==========================================
   CARD SYSTEM
   ========================================== */

.card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card-interactive {
  cursor: pointer;
  border: 3px solid transparent;
}

.card-interactive:hover {
  border-color: var(--color-secondary);
}

.card-correct {
  background: linear-gradient(135deg, var(--color-success-light), var(--color-success));
  border-color: var(--color-success-dark);
  animation: correctPulse 0.6s ease;
}

.card-incorrect {
  background: linear-gradient(135deg, var(--color-error-light), var(--color-error));
  border-color: var(--color-error-dark);
  animation: shake 0.5s ease;
}

/* ==========================================
   GRID LAYOUTS
   ========================================== */

.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

.grid-auto {
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}

/* ==========================================
   GAME INFO DISPLAY
   ========================================== */

.game-info-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-lg);
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--color-light-gray);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
}

.game-stat {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text);
}

.game-stat-label {
  color: var(--color-text-light);
  font-weight: 600;
}

.game-stat-value {
  color: var(--color-primary);
  font-size: var(--font-size-xl);
}

/* ==========================================
   SCORE & FEEDBACK DISPLAYS
   ========================================== */

.score-display {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: var(--color-white);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-xl);
  font-size: var(--font-size-xl);
  font-weight: 700;
  box-shadow: var(--shadow-md);
}

.feedback-positive {
  background: linear-gradient(135deg, var(--color-success), var(--color-success-dark));
  color: var(--color-white);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  text-align: center;
  font-size: var(--font-size-xl);
  font-weight: 700;
  animation: slideInDown 0.5s ease;
}

.feedback-negative {
  background: linear-gradient(135deg, var(--color-error), var(--color-error-dark));
  color: var(--color-white);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  text-align: center;
  font-size: var(--font-size-xl);
  font-weight: 700;
  animation: shake 0.5s ease;
}

/* ==========================================
   VICTORY/COMPLETION SCREENS
   ========================================== */

.victory-screen {
  text-align: center;
  padding: var(--spacing-3xl);
  background: var(--color-white);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
}

.victory-screen h1 {
  color: var(--color-success-dark);
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-xl);
  animation: bounce 1s ease;
}

.victory-stats {
  font-size: var(--font-size-xl);
  color: var(--color-text);
  margin: var(--spacing-xl) 0;
  line-height: 1.8;
}

.victory-buttons {
  display: flex;
  gap: var(--spacing-lg);
  justify-content: center;
  flex-wrap: wrap;
  margin-top: var(--spacing-2xl);
}

/* ==========================================
   ANIMATIONS
   ========================================== */

@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.8;
    transform: scale(1.05);
  }
}

@keyframes shake {
  0%, 100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-8px);
  }
  75% {
    transform: translateX(8px);
  }
}

@keyframes correctPulse {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
  100% {
    transform: scale(1);
  }
}

@keyframes bounce {
  0%, 100% {
    transform: translateY(0);
  }
  25% {
    transform: translateY(-20px);
  }
  50% {
    transform: translateY(0);
  }
  75% {
    transform: translateY(-10px);
  }
}

@keyframes slideInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* ==========================================
   UTILITY CLASSES
   ========================================== */

.hidden {
  display: none !important;
}

.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

.flex {
  display: flex;
}

.flex-center {
  display: flex;
  justify-content: center;
  align-items: center;
}

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

.gap-sm {
  gap: var(--spacing-sm);
}

.gap-md {
  gap: var(--spacing-md);
}

.gap-lg {
  gap: var(--spacing-lg);
}

.gap-xl {
  gap: var(--spacing-xl);
}

/* ==========================================
   RESPONSIVE BREAKPOINTS
   ========================================== */

@media (max-width: 768px) {
  :root {
    --font-size-4xl: 2.5rem;
    --font-size-3xl: 2rem;
    --font-size-2xl: 1.75rem;
  }

  .game-container {
    width: 95%;
    padding: var(--spacing-lg);
  }

  .game-header h1 {
    font-size: var(--font-size-3xl);
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .grid-auto {
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  }

  .game-info-bar {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-md);
  }

  .victory-buttons {
    flex-direction: column;
    align-items: center;
  }

  .victory-buttons .btn {
    width: 100%;
    max-width: 300px;
  }
}

@media (max-width: 480px) {
  .game-section {
    padding: var(--spacing-md);
  }

  .btn-record {
    width: 56px;
    height: 56px;
    font-size: var(--font-size-lg);
  }

  .btn-play {
    width: 48px;
    height: 48px;
    font-size: var(--font-size-md);
  }
}

/* ==========================================
   SETTINGS BUTTON (Common across games)
   ========================================== */

.settings-btn {
  background: var(--color-white);
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
  border-radius: var(--radius-round);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xl);
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-sm);
}

.settings-btn:hover {
  background: var(--color-primary);
  color: var(--color-white);
  transform: rotate(90deg);
  box-shadow: var(--shadow-md);
}