/* ============================================
   CSS VARIABLES - Light & Dark Mode
   ============================================ */

:root {
  /* Brand Colors */
  --color-primary: #1a7a4a;
  --color-primary-dark: #145f38;
  --color-primary-light: #22a060;
  --color-secondary: #f4a800;
  --color-accent: #e63946;

  /* Light Mode */
  --bg-body: #f8f9fa;
  --bg-surface: #ffffff;
  --bg-surface-2: #f0f2f5;
  --bg-navbar: rgba(255, 255, 255, 0.97);
  --bg-footer: #0f2419;
  --bg-overlay: rgba(15, 36, 25, 0.72);
  --bg-card: #ffffff;
  --bg-card-hover: #f4faf7;

  --text-primary: #1a1a2e;
  --text-secondary: #4a5568;
  --text-muted: #718096;
  --text-inverted: #ffffff;
  --text-footer: #c8d8c8;

  --border-color: #e2e8f0;
  --border-focus: #1a7a4a;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.10);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.13);
  --shadow-card: 0 2px 12px rgba(26,122,74,0.09);

  --navbar-height: 65px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  --transition: 0.3s ease;

  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 5rem;

  --font-primary: 'Hind Siliguri', 'Inter', sans-serif;
  --font-heading: 'Noto Serif Bengali', 'Playfair Display', serif;
}

[data-theme="dark"] {
  --bg-body: #0d1117;
  --bg-surface: #161b22;
  --bg-surface-2: #1c2430;
  --bg-navbar: rgba(22, 27, 34, 0.97);
  --bg-footer: #080d0f;
  --bg-overlay: rgba(0, 0, 0, 0.78);
  --bg-card: #1c2430;
  --bg-card-hover: #212d3a;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-muted: #6e7681;
  --text-inverted: #0d1117;
  --text-footer: #8b949e;
  --border-color: #30363d;
  --border-focus: #22a060;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
  --shadow-card: 0 2px 12px rgba(0,0,0,0.3);
}