/* Shared theme variables and utilities for all games */
:root {
  /* Light theme colors */
  --bg: #f7f8fa;
  --text: #1a1a1a;
  --muted: #6b7280;
  --card: #ffffff;
  --subcard: #f1f2f3;
  --border: #e5e7eb;
  --accent: #007aff;
  --accent2: #4f46e5;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
  
  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-base: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 20px;
  --font-size-2xl: 24px;
  --font-size-3xl: 28px;
  --font-size-4xl: 32px;
  
  /* Spacing */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  
  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 10px;
  --radius-2xl: 12px;
  --radius-full: 999px;
  
  /* Transitions */
  --transition-fast: 0.1s ease;
  --transition-normal: 0.2s ease;
  --transition-slow: 0.3s ease;
  
  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal: 1040;
  --z-popover: 1050;
  --z-tooltip: 1060;
}

/* Dark theme */
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f0f10;
    --text: #f3f4f6;
    --muted: #9ca3af;
    --card: #1c1c1e;
    --subcard: #2a2a2c;
    --border: #2e2e32;
    --accent: #0a84ff;
    --accent2: #7c3aed;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
  }
}

/* Telegram WebApp theme sync */
.telegram-theme-sync {
  /* This class will be applied by JavaScript to sync with Telegram theme */
}

/* Common utilities */
.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;
}

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

/* Common button styles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2) var(--space-4);
  border: none;
  border-radius: var(--radius-lg);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.btn:active {
  transform: translateY(1px);
  opacity: 0.95;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff;
}

.btn-secondary {
  background: var(--subcard);
  border: 1px solid var(--border);
  color: var(--text);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
}

.btn-ghost:hover {
  background: var(--subcard);
}

/* Common card styles */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.card-header {
  padding: var(--space-4);
  border-bottom: 1px solid var(--border);
}

.card-body {
  padding: var(--space-4);
}

.card-footer {
  padding: var(--space-4);
  border-top: 1px solid var(--border);
  background: var(--subcard);
}

/* Common form styles */
.form-group {
  margin-bottom: var(--space-4);
}

.form-label {
  display: block;
  margin-bottom: var(--space-2);
  font-weight: 600;
  color: var(--text);
}

.form-input {
  width: 100%;
  padding: var(--space-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  background: var(--card);
  color: var(--text);
  transition: border-color var(--transition-fast);
}

.form-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
}

/* Common animation utilities */
.animate-fade-in {
  animation: fadeIn 0.3s ease;
}

.animate-slide-up {
  animation: slideUp 0.3s ease;
}

.animate-bounce {
  animation: bounce 0.6s ease;
}

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

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

@keyframes bounce {
  0%, 20%, 53%, 80%, 100% {
    transform: translate3d(0, 0, 0);
  }
  40%, 43% {
    transform: translate3d(0, -8px, 0);
  }
  70% {
    transform: translate3d(0, -4px, 0);
  }
  90% {
    transform: translate3d(0, -2px, 0);
  }
}

/* Mobile optimizations */
@media (max-width: 480px) {
  :root {
    --space-4: 12px;
    --space-5: 16px;
    --space-6: 20px;
    --font-size-base: 14px;
    --font-size-lg: 16px;
    --font-size-xl: 18px;
  }
}

/* Touch optimizations */
.touch-optimized {
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
  touch-action: manipulation;
}

/* Prevent zoom on double tap */
.no-zoom {
  touch-action: manipulation;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
}

/* Overscroll behavior */
.no-overscroll {
  overscroll-behavior: none;
}

/* Common loading states */
.loading {
  position: relative;
  pointer-events: none;
}

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}