/* Base styles: layout, typography, resets */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + var(--space-md));
}

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

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text-primary);
  background: var(--color-bg-deep);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Visually hidden but accessible to screen readers */
.visually-hidden {
  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 {
  position: absolute;
  top: var(--space-sm);
  left: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-accent-cyan);
  color: var(--color-bg-deep);
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--border-radius-md);
  z-index: 9999;
  transform: translateY(-120%);
  transition: transform var(--duration-base) var(--ease-out);
}

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

/* Constrained width container */
.wrap {
  max-width: var(--wrap-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-md);
  padding-right: var(--space-md);
}

@media (min-width: 768px) {
  .wrap {
    padding-left: var(--space-xl);
    padding-right: var(--space-xl);
  }
}

/* Section spacing */
.section {
  padding-top: var(--space-3xl);
  padding-bottom: var(--space-3xl);
}

@media (min-width: 768px) {
  .section {
    padding-top: var(--space-4xl);
    padding-bottom: var(--space-4xl);
  }
}

/* Typography */
h1,
h2,
h3 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.eyebrow {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent-cyan);
  margin-bottom: var(--space-sm);
}

.eyebrow-center {
  display: block;
  text-align: center;
}

.section-title {
  font-size: var(--text-3xl);
  color: var(--color-text-primary);
  margin-bottom: var(--space-md);
}

@media (min-width: 768px) {
  .section-title {
    font-size: var(--text-4xl);
  }
}

.section-lede {
  font-size: var(--text-lg);
  line-height: 1.7;
  color: var(--color-text-muted);
  max-width: var(--wrap-narrow);
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--space-2xl);
  text-align: center;
}

/* Links */
a {
  color: var(--color-accent-cyan);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
  transition: color var(--duration-fast) var(--ease-out);
}

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

a:focus-visible {
  outline: 2px solid var(--color-accent-cyan);
  outline-offset: 3px;
  border-radius: var(--border-radius-sm);
}

/* Images */
img {
  display: block;
  max-width: 100%;
  height: auto;
}

/* Buttons reset */
button {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
}

/* Lists */
ul {
  list-style: none;
}