/**
 * Base reset, typography, accessibility, performance helpers.
 */

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: var(--text-body);
  font-weight: var(--font-weight-regular);
  line-height: var(--leading-relaxed);
  color: var(--color-text-primary);
  background-color: var(--color-bg-canvas);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

img {
  border-radius: var(--radius-xl);
}

img[loading="lazy"] {
  content-visibility: auto;
}

button,
input,
textarea,
select {
  font: inherit;
}

a {
  color: var(--color-link);
  text-decoration-color: var(--color-link-underline);
  text-underline-offset: 0.15em;
  transition: color var(--duration-fast) var(--ease-standard);
}

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

a:visited {
  color: var(--color-link-visited);
}

:focus-visible {
  outline: 2px solid var(--color-focus-ring);
  outline-offset: 2px;
}

:focus:not(:focus-visible) {
  outline: none;
}

.skip-link {
  position: absolute;
  top: var(--space-2);
  left: var(--space-2);
  z-index: var(--z-skip-link);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-small);
  font-weight: var(--font-weight-semibold);
  color: var(--color-on-primary);
  background: var(--color-primary);
  border-radius: var(--radius-md);
  text-decoration: none;
  transform: translateY(-200%);
  transition: transform var(--duration-fast) var(--ease-standard);
}

.skip-link:focus {
  transform: translateY(0);
}

.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;
}

h1,
h2,
h3,
h4,
h5 {
  margin: 0;
  color: var(--color-text-primary);
}

h1,
.text-display {
  font-family: var(--font-display);
  font-weight: var(--font-weight-bold);
  letter-spacing: -0.02em;
  line-height: var(--leading-tight);
}

h1 {
  font-size: var(--text-h1);
}

.text-display {
  font-size: var(--text-display);
}

h2 {
  font-family: var(--font-display);
  font-size: var(--text-h2);
  font-weight: var(--font-weight-semibold);
  letter-spacing: -0.015em;
  line-height: 1.15;
}

h3 {
  font-family: var(--font-display);
  font-size: var(--text-h3);
  font-weight: var(--font-weight-semibold);
  letter-spacing: -0.01em;
  line-height: 1.2;
}

h4 {
  font-family: var(--font-body);
  font-size: var(--text-h4);
  font-weight: var(--font-weight-medium);
  letter-spacing: -0.01em;
  line-height: 1.3;
}

h5 {
  font-family: var(--font-body);
  font-size: var(--text-h5);
  font-weight: var(--font-weight-medium);
  letter-spacing: 0;
  line-height: 1.35;
}

p {
  margin: 0 0 1em;
  max-width: 72ch;
}

p:last-child {
  margin-bottom: 0;
}

.text-body-lg {
  font-size: var(--text-body-lg);
  line-height: var(--leading-relaxed);
}

.text-small {
  font-size: var(--text-small);
  line-height: 1.5;
}

.text-caption {
  font-size: var(--text-caption);
  line-height: 1.4;
  letter-spacing: 0.02em;
  color: var(--color-text-tertiary);
}

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

.text-tertiary {
  color: var(--color-text-tertiary);
}

.site-shell {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.site-main {
  flex: 1 0 auto;
  width: 100%;
}

.icon {
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
  stroke: currentColor;
  stroke-width: 1.5;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.icon--sm {
  width: 1rem;
  height: 1rem;
}

.icon--lg {
  width: 1.5rem;
  height: 1.5rem;
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}