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

html, body {
  width: 100%;
  max-width: 100%;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-family-base);
  font-size: var(--text-base);
  line-height: 1.55;
}

/* Ensure no accidental horizontal scroll */
html {
  overflow-x: hidden;
}
body {
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background-color: var(--accent-solid);
  color: var(--accent-contrast);
}
::-moz-selection {
  background-color: var(--accent-solid);
  color: var(--accent-contrast);
}

/* Focus Management */
:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
}
:focus:not(:focus-visible) {
  outline: none;
}

/* Base Typographic Hierarchy */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

h1 { font-size: var(--heading-xl); line-height: 1.1; letter-spacing: -0.03em; }
h2 { font-size: var(--heading-lg); }
h3 { font-size: var(--heading-md); }
h4 { font-size: var(--heading-sm); }

p {
  color: var(--text-secondary);
}

a {
  color: var(--accent-text);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-standard);
}
a:hover {
  color: var(--accent-hover);
}

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

/* Layout Containers */
.container {
  width: min(
    calc(100% - 2 * var(--page-gutter)),
    var(--content-main)
  );
  margin-inline: auto;
}

.prose {
  max-inline-size: var(--content-readable);
}

.section {
  padding-block: var(--section-space);
}

/* Responsive utilities */
@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;
  }
}

.page-intro {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-6);
  max-width: var(--content-readable);
}

.page-copy p,
.page-copy li {
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: var(--content-readable);
  margin-bottom: var(--space-4);
}