/*
 * INTcoin Website - Theme System
 * Light/Dark theme with CSS custom properties
 * Copyright (c) 2026 INTcoin Team
 */

/* ============================================
   LIGHT THEME (Default)
   ============================================ */
:root {
  /* Brand Colors */
  --color-brand-primary: #667eea;
  --color-brand-secondary: #764ba2;
  --color-accent: #10b981;
  --gradient-brand: linear-gradient(135deg, #667eea 0%, #764ba2 100%);

  /* Backgrounds */
  --color-bg-primary: #ffffff;
  --color-bg-secondary: #f9fafb;
  --color-bg-tertiary: #f3f4f6;
  --color-bg-card: #ffffff;
  --color-bg-hover: #f3f4f6;
  --color-bg-active: #e5e7eb;

  /* Text Colors */
  --color-text-primary: #1f2937;
  --color-text-secondary: #6b7280;
  --color-text-tertiary: #9ca3af;
  --color-text-inverse: #ffffff;

  /* Borders */
  --color-border-light: #e5e7eb;
  --color-border-medium: #d1d5db;
  --color-border-dark: #9ca3af;

  /* Semantic Colors */
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  --color-info: #3b82f6;

  /* 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), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

  /* 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);

  /* Z-indexes */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

/* ============================================
   DARK THEME
   ============================================ */
[data-theme="dark"] {
  /* Brand Colors (adjusted for dark mode) */
  --color-brand-primary: #818cf8;
  --color-brand-secondary: #a78bfa;
  --color-accent: #34d399;
  --gradient-brand: linear-gradient(135deg, #818cf8 0%, #a78bfa 100%);

  /* Backgrounds */
  --color-bg-primary: #111827;
  --color-bg-secondary: #1f2937;
  --color-bg-tertiary: #374151;
  --color-bg-card: #1f2937;
  --color-bg-hover: #374151;
  --color-bg-active: #4b5563;

  /* Text Colors */
  --color-text-primary: #f9fafb;
  --color-text-secondary: #d1d5db;
  --color-text-tertiary: #9ca3af;
  --color-text-inverse: #1f2937;

  /* Borders */
  --color-border-light: #374151;
  --color-border-medium: #4b5563;
  --color-border-dark: #6b7280;

  /* Semantic Colors (adjusted for dark backgrounds) */
  --color-success: #34d399;
  --color-warning: #fbbf24;
  --color-error: #f87171;
  --color-info: #60a5fa;

  /* Shadows (darker for dark mode) */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6), 0 10px 10px -5px rgba(0, 0, 0, 0.5);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
}

/* ============================================
   THEME TRANSITION
   ============================================ */
html {
  transition: background-color var(--transition-base), color var(--transition-base);
}

body {
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  transition: background-color var(--transition-base), color var(--transition-base);
}

/* Smooth transitions for themed elements */
*,
*::before,
*::after {
  transition-property: background-color, border-color, color, fill, stroke;
  transition-duration: var(--transition-base);
  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

/* Disable transitions on page load */
.no-transition * {
  transition: none !important;
}