/*
 * Base CSS — shared across all Glisn landing pages
 * Provides CSS reset, typography, and utility variables
 */

/* ========================================
   CSS Custom Properties (Design Tokens)
   ======================================== */
:root {
  /* Brand Colors */
  --glisn-primary: #4F46E5;
  --glisn-primary-dark: #3730A3;
  --glisn-primary-light: #818CF8;
  --glisn-accent: #06B6D4;
  --glisn-accent-dark: #0891B2;

  /* Neutrals */
  --glisn-white: #FFFFFF;
  --glisn-gray-50: #F9FAFB;
  --glisn-gray-100: #F3F4F6;
  --glisn-gray-200: #E5E7EB;
  --glisn-gray-300: #D1D5DB;
  --glisn-gray-500: #6B7280;
  --glisn-gray-700: #374151;
  --glisn-gray-900: #111827;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-display: 'Outfit', var(--font-sans);

  /* Spacing scale */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  /* Border radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
}

/* ========================================
   CSS Reset
   ======================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  color: var(--glisn-gray-900);
  background-color: var(--glisn-white);
  line-height: 1.6;
}

img,
video {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--glisn-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--glisn-primary-dark);
}

/* ========================================
   Utility Classes
   ======================================== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}