/* ==========================================================================
   BASE — reset, typography, parchment ground, shared utilities
   ========================================================================== */

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

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

body {
  margin: 0;
  padding: 0;
  background-color: var(--oj-bg-canvas);
  color: var(--oj-text-primary);
  font-family: var(--oj-font-body);
  font-size: 16px;
  line-height: 1.65;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background-color 0.4s ease, color 0.4s ease;
}

/* Aged-paper vignette + ultra-light noise, applied to the page ground only. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(circle at 50% 0%, rgba(255, 255, 255, 0.55) 0%, rgba(245, 241, 232, 0) 60%),
    var(--oj-bg-canvas);
  pointer-events: none;
}
[data-theme="dark"] body::before {
  background:
    radial-gradient(circle at 50% 0%, rgba(107, 155, 209, 0.1) 0%, rgba(26, 20, 16, 0) 62%),
    var(--oj-bg-canvas);
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
[data-theme="dark"] body::after {
  opacity: 0.05;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--oj-font-heading);
  color: var(--oj-text-primary);
  margin: 0 0 0.5em;
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.015em;
  font-variant-numeric: lining-nums;
}
.feature__index, .eyebrow, .coordinate { font-variant-numeric: lining-nums; }

p {
  margin: 0 0 1.15em;
  max-width: 68ch;
}

a {
  color: var(--oj-compass-blue);
  text-decoration: none;
  transition: color var(--oj-ease-micro);
}
a:hover {
  color: var(--oj-compass-blue-hover);
}

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

ul, ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

button {
  font-family: var(--oj-font-ui);
  cursor: pointer;
  border: 0;
  background: none;
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--oj-compass-blue);
  outline-offset: 3px;
  border-radius: 2px;
}

::selection {
  background: var(--oj-accent-gold-subtle);
  color: var(--oj-text-primary);
}

.oj-container {
  width: 100%;
  max-width: var(--oj-container-max);
  margin-inline: auto;
  padding-inline: 24px;
}
@media (max-width: 640px) {
  .oj-container { padding-inline: 20px; }
}

.oj-section {
  padding-block: clamp(64px, 11vw, 128px);
  position: relative;
}

.visually-hidden {
  position: absolute !important;
  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;
  inset-inline-start: 16px;
  top: -60px;
  z-index: 200;
  background: var(--oj-text-primary);
  color: var(--oj-bg-canvas);
  padding: 10px 18px;
  border-radius: var(--oj-radius-full);
  font-family: var(--oj-font-ui);
  font-size: 14px;
  transition: top var(--oj-ease-micro);
}
.skip-link:focus {
  top: 16px;
  color: var(--oj-bg-canvas);
}

/* ---- Shared editorial motifs ------------------------------------------- */

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--oj-font-ui);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--oj-text-secondary);
  padding: 7px 16px;
  border: 1px solid var(--oj-accent-gold);
  border-radius: var(--oj-radius-full);
  background: var(--oj-accent-gold-subtle);
}
.eyebrow::before,
.eyebrow::after {
  content: "\2605"; /* star */
  font-size: 9px;
  color: var(--oj-accent-gold);
  flex: none;
}
@media (max-width: 480px) {
  .eyebrow { font-size: 10.5px; letter-spacing: 0.1em; padding: 6px 13px; }
}

.vintage-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin: 20px 0 28px;
}
.vintage-divider::before,
.vintage-divider::after {
  content: "";
  height: 1px;
  width: 56px;
  background: var(--oj-accent-gold);
}
.vintage-divider__mark {
  color: var(--oj-accent-gold);
  font-size: 14px;
  line-height: 1;
}
.vintage-divider--start { justify-content: flex-start; }
.vintage-divider--start::before { display: none; }

.section-title {
  font-size: clamp(28px, 4.4vw, 42px);
  font-weight: 700;
}

.lead {
  font-size: clamp(17px, 2.2vw, 21px);
  line-height: 1.55;
  color: var(--oj-text-secondary);
}

.coordinate {
  font-family: var(--oj-font-ui);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--oj-text-muted);
}

/* Reduced motion — mirrors webdesign.md §11.2 */
@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;
  }
}