/* ==========================================================================
   RESET & BASE STYLES (reset.css)
   ========================================================================== */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 100%;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
  width: 100%;
  max-width: 100%;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  min-height: 100vh;
  background-color: var(--color-background);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  width: 100%;
  max-width: 100vw;
  position: relative;
}

body.is-locked {
  overflow: hidden;
}

img, picture, video, canvas, svg, iframe, object, embed {
  display: block;
  max-width: 100%;
  height: auto;
}

input, button, textarea, select {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
}

button {
  cursor: pointer;
}

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

/* Accessibility Focus Ring */
:focus-visible {
  outline: 3px solid var(--color-focus-ring);
  outline-offset: 3px;
  border-radius: 2px;
}

/* Visually Hidden Utility for Screen Readers */
.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;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--color-primary);
  color: var(--color-text-on-primary);
  padding: 0.75rem 1.25rem;
  z-index: 1000;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: top var(--duration-fast) var(--ease-out);
}

.skip-link:focus {
  top: 1rem;
}