/* ==========================================================================
   Base / Reset
   ========================================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
}

html {
  scroll-behavior: smooth;
}

@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;
    scroll-behavior: auto !important;
  }
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-ink);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img,
svg {
  display: block;
  max-width: 100%;
}

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

ul {
  list-style: none;
  padding: 0;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

input,
textarea {
  font: inherit;
  color: inherit;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--color-ink);
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-4);
  z-index: 1000;
  background: var(--color-ink);
  color: #fff;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-sm);
  transition: top var(--duration-sm) var(--ease-out);
}

.skip-link:focus {
  top: var(--space-4);
}

/* Visible focus styles everywhere */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ==========================================================================
   Layout utilities
   ========================================================================== */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

section {
  padding-block: var(--space-24);
}

@media (max-width: 768px) {
  section {
    padding-block: var(--space-16);
  }
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
  font-weight: 600;
}

.eyebrow::before {
  content: '';
  width: 18px;
  height: 1px;
  background: var(--color-primary);
}

.section-head {
  max-width: 620px;
  margin-bottom: var(--space-16);
}

.section-head h2 {
  font-size: var(--text-3xl);
  margin-top: var(--space-3);
}

.section-head p {
  margin-top: var(--space-4);
  color: var(--color-muted);
  font-size: var(--text-lg);
}

.section-head--center {
  margin-inline: auto;
  text-align: center;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: var(--text-sm);
  white-space: nowrap;
  transition: transform var(--duration-sm) var(--ease-out),
              box-shadow var(--duration-sm) var(--ease-out),
              background-color var(--duration-sm) var(--ease-out),
              color var(--duration-sm) var(--ease-out);
}

.btn--primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: var(--shadow-glow);
}

.btn--primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
}

.btn--ghost {
  background: transparent;
  color: var(--color-ink);
  border: 1px solid var(--color-border-strong);
}

.btn--ghost:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn--sm {
  padding: var(--space-2) var(--space-4);
}

/* Reveal-on-scroll utility, toggled via JS */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 700ms var(--ease-out), transform 700ms var(--ease-out);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}