/* ========================================
   BASE.CSS — Base Styles
   ======================================== */

html {
  overflow-x: hidden;
  overflow-x: clip;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  letter-spacing: var(--tracking-normal);
  scroll-padding-top: calc(var(--header-height) + var(--space-md));
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  position: relative;
  overflow-x: hidden;
  overflow-x: clip;
}

[hidden] {
  display: none !important;
}

:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 3px;
}

::selection {
  background: var(--color-accent);
  color: var(--color-text-inverse);
}

/* Links */
a {
  transition: color var(--transition-fast);
}

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

/* Images */
img {
  object-fit: cover;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}

/* Selection for Devanagari */
.devnagari ::selection,
.devnagari *::selection {
  background: var(--color-accent);
  color: var(--color-text-inverse);
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  z-index: var(--z-tooltip);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-accent);
  color: var(--color-text-inverse);
  font-size: var(--text-sm);
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-md);
}

/* Utility Classes */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.container {
  width: 100%;
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--viewport-padding);
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--viewport-padding-sm);
  }
}

/* Grid System */
.grid {
  display: grid;
  gap: var(--grid-gap);
}

.grid-sm {
  gap: var(--grid-gap-sm);
}

.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
.grid-cols-5 { grid-template-columns: repeat(5, 1fr); }
.grid-cols-6 { grid-template-columns: repeat(6, 1fr); }
.grid-cols-12 { grid-template-columns: repeat(12, 1fr); }

@media (max-width: 1024px) {
  .grid-cols-3,
  .grid-cols-4,
  .grid-cols-5,
  .grid-cols-6 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .grid-cols-2,
  .grid-cols-3,
  .grid-cols-4,
  .grid-cols-5,
  .grid-cols-6 {
    grid-template-columns: 1fr;
  }
}

/* Flex Utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.gap-xs { gap: var(--space-xs); }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.gap-xl { gap: var(--space-xl); }

/* Text Alignment */
.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }

/* Display */
.block { display: block; }
.inline-block { display: inline-block; }
.hidden { display: none; }

/* Overflow */
.overflow-hidden { overflow: hidden; }
.overflow-x-hidden { overflow-x: hidden; }

/* Position */
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }

/* Width / Height */
.w-full { width: 100%; }
.h-full { height: 100%; }
.min-h-screen { min-height: 100vh; }
.min-h-[90vh] { min-height: 90vh; }

/* Opacity */
.opacity-0 { opacity: 0; }
.opacity-50 { opacity: 0.5; }
.opacity-100 { opacity: 1; }

/* Transform */
.translate-y-0 { transform: translateY(0); }
.translate-y-10 { transform: translateY(10px); }
.translate-y-20 { transform: translateY(20px); }
.translate-y-40 { transform: translateY(40px); }
.translate-x-0 { transform: translateX(0); }

/* Transition */
.transition-base {
  transition: opacity var(--transition-base), transform var(--transition-slow) var(--ease-out-expo);
}

.transition-slow {
  transition: opacity var(--transition-slow), transform var(--transition-slower) var(--ease-out-expo);
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  .transition-base,
  .transition-slow,
  * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}