/* ============================================
   PHASE 0 COLOR SYSTEM
   Design tokens for consistent branding
   ============================================ */

:root {
  /* PRIMARY COLORS */
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --primary-dark: #1e40af;
  --primary-light: #60a5fa;
  --primary-lighter: #dbeafe;
  
  /* BRAND ACCENT */
  --dark: #1a2639;
  --dark-light: #24344d;
  --dark-lighter: #2d3e52;
  
  /* SEMANTIC COLORS */
  --success: #10b981;
  --success-light: #d1fae5;
  --warning: #f59e0b;
  --warning-light: #fef3c7;
  --error: #ef4444;
  --error-light: #fee2e2;
  
  /* NEUTRAL PALETTE */
  --gray-900: #111827;
  --gray-800: #1f2937;
  --gray-700: #374151;
  --gray-600: #4b5563;
  --gray-500: #6b7280;
  --gray-400: #9ca3af;
  --gray-300: #d1d5db;
  --gray-200: #e5e7eb;
  --gray-100: #f3f4f6;
  --gray-50: #f9fafb;
  
  /* BACKGROUNDS */
  --bg-white: #ffffff;
  --bg-light: #f9fafb;
  --bg-lighter: #f3f4f6;
  --bg-dark: #1a2639;
  --bg-dark-light: #24344d;
  
  /* TEXT COLORS */
  --text-dark: #1a2639;
  --text-primary: #111827;
  --text-muted: #6b7280;
  --text-lighter: #9ca3af;
  --text-white: #ffffff;
  
  /* BORDERS & DIVIDERS */
  --border-light: #e5e7eb;
  --border-lighter: #f3f4f6;
  --border-dark: #4b5563;
  
  /* SPECIAL COLORS */
  --whatsapp-green: #075e54;
  --whatsapp-light: #128c7e;
  
  /* SHADOWS */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  
  /* TRANSITIONS */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

.text-primary {
  color: var(--primary);
}

.text-dark {
  color: var(--dark);
}

.text-muted {
  color: var(--text-muted);
}

.text-white {
  color: var(--text-white);
}

.bg-primary {
  background-color: var(--primary);
}

.bg-dark {
  background-color: var(--dark);
}

.bg-light {
  background-color: var(--bg-light);
}

.border-primary {
  border-color: var(--primary);
}

.border-light {
  border-color: var(--border-light);
}

/* Gradient utilities */
.gradient-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
}

.gradient-primary-light {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
}

.gradient-dark {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
}

/* Hover state utilities */
.hover-primary:hover {
  color: var(--primary);
  transition: color var(--transition-fast);
}

.hover-primary-bg:hover {
  background-color: var(--primary-hover);
  transition: background-color var(--transition-fast);
}