/* =========================================
   Vyom Hans Publications - Design Tokens
   ========================================= */

:root {
  /* ── Colors ── */
  --color-primary: #436EEE;
  --color-primary-light: #5a82f0;
  --color-primary-dark: #3458c6;
  --color-accent: #87CEEB;
  --color-accent-light: #a8ddf0;
  --color-accent-dark: #5fb8dc;
  --color-secondary: #f0f5f8;
  --color-secondary-dark: #dce8ef;
  --color-white: #FFFFF0;
  --color-black: #000000;
  --color-text: #2d2d2d;
  --color-text-light: #555555;
  --color-text-muted: #888888;
  --color-text-on-dark: #FFFFF0;
  --color-text-on-dark-muted: #c8d8e8;
  --color-border: #c8d8e8;
  --color-border-light: #e0ecf4;
  --color-success: #2ecc71;
  --color-error: #e74c3c;
  --color-warning: #f39c12;
  --color-info: #3498db;

  /* ── Gradients ── */
  --gradient-hero: linear-gradient(135deg, #3458c6 0%, #436EEE 50%, #5a82f0 100%);
  --gradient-accent: linear-gradient(135deg, #87CEEB 0%, #a8ddf0 100%);
  --gradient-card: linear-gradient(180deg, rgba(67,110,238,0) 0%, rgba(67,110,238,0.03) 100%);
  --gradient-dark-overlay: linear-gradient(180deg, rgba(67,110,238,0.85) 0%, rgba(67,110,238,0.95) 100%);

  /* ── Typography ── */
  --font-heading: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-md: 1.125rem;
  --text-lg: 1.25rem;
  --text-xl: 1.5rem;
  --text-2xl: 1.875rem;
  --text-3xl: 2.25rem;
  --text-4xl: 3rem;
  --text-5xl: 3.75rem;

  --leading-tight: 1.2;
  --leading-snug: 1.35;
  --leading-normal: 1.6;
  --leading-relaxed: 1.75;

  --weight-normal: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;
  --weight-black: 900;

  /* ── Spacing ── */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* ── Borders ── */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  --radius-full: 9999px;

  /* ── Shadows ── */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 24px 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-gold: 0 4px 20px rgba(135, 206, 235, 0.35);
  --shadow-inner: inset 0 2px 4px rgba(0, 0, 0, 0.06);

  /* ── Transitions ── */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --duration-slow: 400ms;
  --duration-slower: 600ms;

  /* ── Z-index ── */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-overlay: 300;
  --z-modal: 400;
  --z-toast: 500;

  /* ── Layout ── */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1200px;
  --container-2xl: 1400px;
  --header-height: 72px;
}