/* =========================================================================
   TIMBER TRAILS — ARTICLE STYLESHEET
   Loaded in addition to variables.css + style.css + responsive.css +
   animations.css on every Research Library article page. Contains only
   the long-form reading layout, citation styling and sources list — the
   shared brand chrome (header, footer, buttons, tokens) is not repeated.
   ========================================================================= */

/* -------------------------------------------------------------------------
   ARTICLE HERO — compact, text-only masthead (no full-screen hero here;
   articles are read for their words, not re-sold on the way in).
   ------------------------------------------------------------------------- */
.article-hero {
  padding-block: calc(var(--space-3xl) + 2rem) var(--space-2xl);
  background: var(--surface-secondary);
  border-bottom: 1px solid var(--border-subtle);
}

.article-hero__image-wrap {
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.article-hero__image {
  width: 100%;
  max-height: 560px;
  object-fit: cover;
  border-radius: var(--radius-md);
  display: block;
  box-shadow: var(--shadow-lg);
}

.article-hero__back {
  margin-bottom: var(--space-xl);
}

.article-hero__tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--brand-primary);
  background: var(--color-moss-15);
  padding: 0.35em 0.9em;
  border-radius: var(--radius-pill);
  margin-bottom: var(--space-md);
}

.article-hero__title {
  font-size: var(--fs-3xl);
  line-height: var(--lh-tight);
  max-width: 20ch;
  margin-bottom: var(--space-lg);
}

.article-hero__dek {
  font-size: var(--fs-md);
  line-height: var(--lh-relaxed);
  color: var(--text-secondary);
  max-width: 62ch;
  font-family: var(--font-display);
  font-style: italic;
  font-weight: var(--fw-regular);
}

.article-hero__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-md);
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-subtle);
  font-size: var(--fs-sm);
  color: var(--text-muted);
}

.article-hero__meta strong {
  color: var(--text-primary);
  font-weight: var(--fw-medium);
}

.article-hero__meta .dot {
  width: 3px; height: 3px;
  border-radius: 50%;
  background: var(--text-muted);
  display: inline-block;
}

/* -------------------------------------------------------------------------
   ARTICLE BODY — the reading column
   ------------------------------------------------------------------------- */
.article-body {
  padding-block: var(--space-2xl);
}

.article-body__layout {
  max-width: var(--content-narrow);
  margin-inline: auto;
}

.article-figure {
  margin-block: var(--space-2xl);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--surface-secondary);
  border: 1px solid var(--border-subtle);
}

.article-figure svg {
  width: 100%;
  height: auto;
  display: block;
}

.article-figure figcaption {
  padding: var(--space-md) var(--space-lg);
  font-size: var(--fs-xs);
  color: var(--text-muted);
  border-top: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
}

.article-prose {
  font-size: var(--fs-md);
  line-height: var(--lh-loose);
  color: var(--text-primary);
}

.article-prose > * + * {
  margin-top: var(--space-lg);
}

.article-prose p {
  max-width: none;
}

.article-prose h2 {
  font-size: var(--fs-xl);
  margin-top: var(--space-2xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-subtle);
}

.article-prose h3 {
  font-size: var(--fs-lg);
  margin-top: var(--space-xl);
}

.article-prose ul,
.article-prose ol {
  padding-left: 1.4em;
  display: grid;
  gap: var(--space-sm);
}

.article-prose ul { list-style: disc; }
.article-prose ol { list-style: decimal; }

.article-prose blockquote {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--fs-lg);
  line-height: var(--lh-snug);
  color: var(--text-primary);
  border-left: 2px solid var(--brand-primary);
  padding-left: var(--space-lg);
  margin-block: var(--space-xl);
}

.article-prose strong { font-weight: var(--fw-semibold); }

/* Inline numbered citation markers — small, unobtrusive, brand-accented */
.cite {
  font-family: var(--font-mono);
  font-size: 0.7em;
  vertical-align: super;
  line-height: 0;
  color: var(--brand-primary);
  font-weight: var(--fw-medium);
  padding: 0 0.1em;
  text-decoration: none;
  scroll-margin-top: 6rem;
}

.cite:hover,
.cite:focus-visible {
  text-decoration: underline;
}

/* -------------------------------------------------------------------------
   PULL FACTS — a small callout for a single striking, sourced statistic
   ------------------------------------------------------------------------- */
.pull-fact {
  margin-block: var(--space-xl);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  background: var(--gradient-mist), var(--surface-elevated);
  border: 1px solid var(--border-subtle);
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
}

.pull-fact__icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  color: var(--brand-primary);
  margin-top: 2px;
}

.pull-fact__text {
  font-size: var(--fs-base);
  color: var(--text-secondary);
  line-height: var(--lh-relaxed);
}

.pull-fact__text strong {
  color: var(--text-primary);
  font-family: var(--font-display);
  font-size: 1.15em;
}

/* -------------------------------------------------------------------------
   CORRECTIONS / UNCERTAINTY NOTE — the brand's editorial charter promises
   to explain uncertainty rather than smooth over it; this component gives
   that promise a visible, reusable home in every article.
   ------------------------------------------------------------------------- */
.uncertainty-note {
  margin-block: var(--space-xl);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  border: 1px dashed var(--border-strong);
  background: var(--surface-secondary);
}

.uncertainty-note__label {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--space-xs);
  display: block;
}

.uncertainty-note p {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  line-height: var(--lh-relaxed);
}

/* -------------------------------------------------------------------------
   SOURCES
   ------------------------------------------------------------------------- */
.article-sources {
  max-width: var(--content-narrow);
  margin-inline: auto;
  padding-block: var(--space-2xl);
  border-top: 1px solid var(--border-subtle);
}

.article-sources__title {
  font-size: var(--fs-lg);
  margin-bottom: var(--space-md);
}

.article-sources__intro {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
  max-width: 62ch;
}

.source-list {
  display: grid;
  gap: var(--space-md);
  counter-reset: source;
}

.source-list li {
  position: relative;
  padding-left: 2.4em;
  font-size: var(--fs-sm);
  line-height: var(--lh-relaxed);
  color: var(--text-secondary);
  scroll-margin-top: 6rem;
}

.source-list li::before {
  counter-increment: source;
  content: '[' counter(source) ']';
  position: absolute;
  left: 0;
  font-family: var(--font-mono);
  color: var(--brand-primary);
  font-weight: var(--fw-medium);
}

.source-list cite {
  font-style: normal;
  font-weight: var(--fw-medium);
  color: var(--text-primary);
}

.source-list a {
  color: var(--text-accent);
  word-break: break-word;
}

.source-list a:hover { text-decoration: underline; }

/* -------------------------------------------------------------------------
   ARTICLE FOOTER NAV — where to go next
   ------------------------------------------------------------------------- */
.article-next {
  background: var(--surface-secondary);
  border-top: 1px solid var(--border-subtle);
  padding-block: var(--space-2xl);
}

.article-next__inner {
  max-width: var(--content-narrow);
  margin-inline: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.article-next__label {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--space-2xs);
}

.article-next__title {
  font-size: var(--fs-lg);
}

/* -------------------------------------------------------------------------
   RESPONSIVE
   ------------------------------------------------------------------------- */
@media (max-width: 640px) {
  .article-hero__title { font-size: var(--fs-2xl); }
  .article-prose { font-size: var(--fs-base); }
  .article-prose blockquote { font-size: var(--fs-md); padding-left: var(--space-md); }
}