/**
 * Bhairo Nest - Design System Base Stylesheet (base.css)
 * Reset, Core Tokens, Typography, Spacing Scale, Grid Layout & Accessibility
 */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800;900&family=Inter:wght@300;400;500;600;700;800&display=swap');

/* Reset & Core Design Tokens */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  /* Global Typography */
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Spacing System */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;

  /* Border Radii */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 30px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.25, 1, 0.5, 1);
  --transition-normal: 0.35s ease;
  --transition-slow: 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Document Setup */
html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Accessibility Focus States */
:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 3px;
}

/* Typography Scale */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.25;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.25rem, 5vw, 3.75rem); font-weight: 800; }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.75rem); font-weight: 700; }
h3 { font-size: clamp(1.35rem, 2.5vw, 2rem); font-weight: 700; }
h4 { font-size: clamp(1.15rem, 2vw, 1.4rem); font-weight: 600; }

p {
  color: var(--text-secondary);
  font-size: 1rem;
}

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

a:hover {
  color: var(--accent-hover);
}

/* Layout Containers */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section-padding {
  padding: var(--space-2xl) 0;
}

.grid {
  display: grid;
  gap: var(--space-md);
}

/* Utility Flex & Alignment Classes */
.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

/* Reduced Motion Safeguard */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}