:root {
  /* Surface & Background */
  --color-background: #ffffff;
  --color-surface: #f8fafc;
  --color-surface-alt: #f1f5f9;
  --color-surface-card: #ffffff;

  /* Typography Colors */
  --color-text: #0f172a;
  --color-text-soft: #334155;
  --color-text-muted: #64748b;

  /* Borders */
  --color-border: #e2e8f0;
  --color-border-strong: #cbd5e1;
  --color-border-focus: #075eab;

  /* Prasad Blue Brand Colors */
  --color-primary: #075eab;
  --color-primary-dark: #064b87;
  --color-primary-light: #eaf4ff;
  --color-primary-gradient: linear-gradient(135deg, #075eab 0%, #064b87 100%);

  /* Cyan & Supporting Accents */
  --color-accent: #0284c7;
  --color-accent-light: #e0f2fe;
  --color-accent-soft: #f0f9ff;
  --color-accent-gradient: linear-gradient(135deg, #38bdf8 0%, #0284c7 100%);

  /* WhatsApp Brand Green */
  --color-whatsapp: #25d366;
  --color-whatsapp-dark: #128c7e;

  /* Status Colors */
  --color-success: #15803d;
  --color-success-light: #dcfce7;
  --color-warning: #b45309;
  --color-warning-light: #fef3c7;
  --color-danger: #b91c1c;
  --color-danger-light: #fee2e2;

  --color-white: #ffffff;
  --color-black: #000000;

  /* Border Radii */
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 16px 40px rgba(15, 23, 42, 0.12);
  --shadow-hover: 0 20px 48px rgba(7, 94, 171, 0.14);
  --glow-primary: 0 0 32px rgba(7, 94, 171, 0.2);

  /* 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;

  /* Typography */
  --font-sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Font Sizes */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;

  /* Responsive Headings */
  --h1: clamp(2.25rem, 5vw, 4rem);
  --h2: clamp(1.75rem, 3.5vw, 2.65rem);
  --h3: clamp(1.25rem, 2.5vw, 1.75rem);

  /* Layout */
  --container: 1180px;
  --reading-width: 760px;
  --header-height: 76px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}