/* ============================================
   VEENAPEETH ACADEMY — DESIGN TOKENS
   ============================================ */

:root {
  /* — Colors — */
  --color-primary: #0F172A;
  --color-primary-light: #1E293B;
  --color-primary-dark: #020617;

  --color-secondary: #2563EB;
  --color-secondary-light: #3B82F6;
  --color-secondary-dark: #1D4ED8;
  --color-secondary-50: #EFF6FF;
  --color-secondary-100: #DBEAFE;
  --color-secondary-200: #BFDBFE;

  --color-accent: #F59E0B;
  --color-accent-light: #FBBF24;
  --color-accent-dark: #D97706;

  --color-success: #10B981;
  --color-success-light: #34D399;

  --color-error: #EF4444;
  --color-error-light: #FCA5A5;

  --color-bg: #F8FAFC;
  --color-bg-alt: #F1F5F9;
  --color-surface: #FFFFFF;
  --color-surface-hover: #F8FAFC;

  --color-text: #111827;
  --color-text-secondary: #4B5563;
  --color-text-muted: #9CA3AF;
  --color-text-inverse: #FFFFFF;

  --color-border: #E5E7EB;
  --color-border-light: #F3F4F6;

  /* — Gradients — */
  --gradient-hero: linear-gradient(135deg, #0F172A 0%, #1E3A5F 40%, #2563EB 100%);
  --gradient-blue: linear-gradient(135deg, #2563EB 0%, #7C3AED 100%);
  --gradient-accent: linear-gradient(135deg, #F59E0B 0%, #F97316 100%);
  --gradient-card: linear-gradient(135deg, rgba(255,255,255,0.9) 0%, rgba(255,255,255,0.6) 100%);
  --gradient-glass: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, rgba(255,255,255,0.05) 100%);
  --gradient-dark: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
  --gradient-scholarship: linear-gradient(135deg, #2563EB 0%, #7C3AED 50%, #2563EB 100%);
  --gradient-cta: linear-gradient(135deg, #1E3A5F 0%, #2563EB 50%, #7C3AED 100%);
  --gradient-mesh: radial-gradient(at 20% 80%, rgba(37, 99, 235, 0.15) 0%, transparent 50%),
                    radial-gradient(at 80% 20%, rgba(245, 158, 11, 0.1) 0%, transparent 50%),
                    radial-gradient(at 50% 50%, rgba(124, 58, 237, 0.08) 0%, transparent 50%);

  /* — Typography — */
  --font-heading: 'Poppins', sans-serif;
  --font-body: 'Inter', sans-serif;

  --text-hero: clamp(2.125rem, 5vw + 1rem, 4.5rem);
  --text-h1: clamp(2rem, 4vw + 0.5rem, 3.5rem);
  --text-h2: clamp(1.75rem, 3vw + 0.5rem, 3rem);
  --text-h3: clamp(1.25rem, 2vw + 0.5rem, 1.75rem);
  --text-h4: clamp(1.125rem, 1.5vw + 0.5rem, 1.375rem);
  --text-body-lg: 1.125rem;
  --text-body: 1rem;
  --text-body-sm: 0.875rem;
  --text-caption: 0.75rem;
  --text-overline: 0.6875rem;

  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;
  --weight-extrabold: 800;

  --leading-tight: 1.15;
  --leading-snug: 1.3;
  --leading-normal: 1.6;
  --leading-relaxed: 1.75;

  --tracking-tight: -0.025em;
  --tracking-normal: 0;
  --tracking-wide: 0.025em;
  --tracking-wider: 0.05em;
  --tracking-widest: 0.1em;

  /* — Spacing (4px base) — */
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  --space-16: 4rem;     /* 64px */
  --space-20: 5rem;     /* 80px */
  --space-24: 6rem;     /* 96px */
  --space-32: 8rem;     /* 128px */

  /* — Border Radius — */
  --radius-sm: 0.5rem;    /* 8px */
  --radius-md: 0.75rem;   /* 12px */
  --radius-lg: 1rem;      /* 16px */
  --radius-xl: 1.25rem;   /* 20px */
  --radius-2xl: 1.5rem;   /* 24px */
  --radius-full: 9999px;

  /* — Shadows — */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.12);
  --shadow-2xl: 0 24px 64px rgba(0, 0, 0, 0.16);
  --shadow-blue: 0 8px 32px rgba(37, 99, 235, 0.25);
  --shadow-accent: 0 8px 32px rgba(245, 158, 11, 0.25);
  --shadow-card-hover: 0 20px 40px rgba(0, 0, 0, 0.12);

  /* — Glass — */
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.3);
  --glass-blur: blur(20px);

  /* — Transitions — */
  --ease-default: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-spring: cubic-bezier(0.175, 0.885, 0.32, 1.275);

  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 500ms;
  --duration-slower: 700ms;

  /* — Z-Index — */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-overlay: 500;
  --z-modal: 1000;
  --z-toast: 1100;
  --z-tooltip: 1200;

  /* — Container — */
  --container-max: 1280px;
  --container-narrow: 960px;
  --container-wide: 1440px;
  --container-padding: var(--space-6);
}

/* ============================================
   DARK MODE OVERRIDES
   ============================================ */
[data-theme="dark"] {
  --color-bg: #0B0F19;
  --color-bg-alt: #111827;
  --color-surface: #1E293B;
  --color-surface-hover: #334155;

  --color-text: #F1F5F9;
  --color-text-secondary: #94A3B8;
  --color-text-muted: #64748B;

  --color-border: #334155;
  --color-border-light: #1E293B;

  --glass-bg: rgba(30, 41, 59, 0.7);
  --glass-border: rgba(51, 65, 85, 0.5);

  --gradient-card: linear-gradient(135deg, rgba(30,41,59,0.9) 0%, rgba(30,41,59,0.6) 100%);
  --gradient-mesh: radial-gradient(at 20% 80%, rgba(37, 99, 235, 0.12) 0%, transparent 50%),
                    radial-gradient(at 80% 20%, rgba(245, 158, 11, 0.08) 0%, transparent 50%),
                    radial-gradient(at 50% 50%, rgba(124, 58, 237, 0.06) 0%, transparent 50%);

  --shadow-sm: 0 2px 8px 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-xl: 0 16px 48px rgba(0, 0, 0, 0.5);
  --shadow-card-hover: 0 20px 40px rgba(0, 0, 0, 0.5);
}