/* ===============================================
   lvrd.ai — Articles (index + reading layout)
   Builds on LVRD foundations + marketing kit.
   Loaded alongside site.css; never replaces it.
   =============================================== */
@import url("./colors_and_type.css");

/* ---------- Page chrome ---------- */
/* site.css already owns the header, footer, container, eyebrow,
   buttons, and accent line. Articles only adds what's specific
   to the index list and the reading experience. */

/* ---------- Index hero ---------- */
.articles-hero {
  padding: 120px 0 64px;
}
.articles-hero .container {
  max-width: 1120px;
}
.articles-hero-headline {
  font-size: clamp(36px, 5vw, 56px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  font-weight: 600;
  color: var(--fg-strong);
  margin: 24px 0 16px;
  text-wrap: balance;
  max-width: 22ch;
}
.articles-hero-lede {
  font-size: 18px;
  line-height: 1.65;
  color: var(--fg-muted);
  margin: 0;
  max-width: 60ch;
  text-wrap: pretty;
}

/* ---------- Article list ---------- */
.article-list {
  padding: 24px 0 128px;
}
.article-list-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin-top: 16px;
}

.article-card {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 48px;
  padding: 36px 0;
  border-top: 1px solid var(--border);
  text-decoration: none;
  border-bottom: 0;
  color: inherit;
  transition: background var(--duration-fast) var(--easing-default);
}
.article-card:hover {
  background: color-mix(in oklab, var(--surface) 60%, transparent);
}
.article-card:hover .article-card-title {
  color: var(--accent);
}
.article-card:last-of-type {
  border-bottom: 1px solid var(--border);
}

.article-card-meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--fg-faint);
  text-transform: uppercase;
}
.article-card-meta .author { color: var(--fg-subtle); }
.article-card-meta .date { color: var(--fg-faint); }

.article-card-body {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.article-card-title {
  font-size: 28px;
  line-height: 1.18;
  letter-spacing: -0.015em;
  font-weight: 600;
  color: var(--fg-strong);
  margin: 0;
  transition: color var(--duration-fast) var(--easing-default);
  text-wrap: balance;
}
.article-card-lede {
  font-size: 16px;
  line-height: 1.55;
  color: var(--fg-muted);
  margin: 0;
  max-width: 60ch;
  text-wrap: pretty;
}
.article-card-cue {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  margin-top: 4px;
}

/* ---------- Article reading layout ---------- */
.article-page {
  padding: 96px 0 96px;
}
.article-measure {
  max-width: 680px;
  margin: 0 auto;
}

.article-eyebrow-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}
.article-back {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-subtle);
  text-decoration: none;
  border-bottom: 0;
}
.article-back:hover { color: var(--accent); }

.article-title {
  font-size: clamp(32px, 4.4vw, 48px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  font-weight: 600;
  color: var(--fg-strong);
  margin: 12px 0 24px;
  text-wrap: balance;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin: 0 0 40px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-subtle);
}
.article-meta .sep {
  color: var(--fg-faint);
  user-select: none;
}
.article-meta .meta-label {
  color: var(--fg-faint);
  margin-right: 6px;
}

/* ---------- Article prose ---------- */
.article-prose {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 26px;
  color: var(--fg);
}
.article-prose > * + * { margin-top: 1.2em; }

.article-prose p {
  font-size: 16px;
  line-height: 26px;
  margin: 0;
  text-wrap: pretty;
}

.article-prose h2 {
  font-size: 24px;
  line-height: 30px;
  letter-spacing: -0.01em;
  font-weight: 600;
  color: var(--fg-strong);
  margin: 2em 0 0.4em;
}
.article-prose h3 {
  font-size: 18px;
  line-height: 24px;
  letter-spacing: -0.005em;
  font-weight: 600;
  color: var(--fg-strong);
  margin: 1.6em 0 0.3em;
}

.article-prose blockquote {
  margin: 1.6em 0;
  padding: 4px 0 4px 24px;
  border-left: 2px solid var(--accent);
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  font-size: 22px;
  line-height: 1.45;
  letter-spacing: -0.005em;
  color: var(--fg-strong);
}
.article-prose blockquote p {
  font-family: inherit;
  font-style: inherit;
  font-size: inherit;
  line-height: inherit;
  color: inherit;
  margin: 0;
}
.article-prose blockquote + p { margin-top: 1.6em; }

.article-prose a {
  color: var(--accent);
  border-bottom: 1px solid color-mix(in oklab, var(--accent) 30%, transparent);
}
.article-prose a:hover { border-bottom-color: var(--accent); }

.article-prose ul,
.article-prose ol {
  margin: 0;
  padding-left: 1.4em;
}
.article-prose li + li { margin-top: 0.4em; }

.article-prose hr {
  border: 0;
  height: 1px;
  background: var(--accent-line);
  margin: 2.4em 0;
}

/* ---------- Attribution (subtle aside, not banner) ---------- */
.article-attribution {
  margin-top: 64px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 22px;
  color: var(--fg-muted);
}
.article-attribution .attribution-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-subtle);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.article-attribution p {
  margin: 0;
  font-size: 14px;
  line-height: 22px;
  color: var(--fg-muted);
  max-width: 60ch;
}
.article-attribution p + p { margin-top: 10px; }
.article-attribution a {
  color: var(--fg-strong);
  border-bottom: 1px solid color-mix(in oklab, var(--fg-strong) 30%, transparent);
}
.article-attribution a:hover { border-bottom-color: var(--accent); color: var(--accent); }

/* ---------- Canon section (agent governance, expandable) ---------- */
.article-canon {
  margin-top: 72px;
  padding-top: 48px;
  border-top: 1px solid var(--border);
}
.article-canon-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fg-subtle);
  margin: 0 0 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
  font-weight: 500;
}
.article-canon-lede {
  font-size: 14px;
  line-height: 1.5;
  color: var(--fg-muted);
  margin: 0 0 16px;
  max-width: 60ch;
}

.canon-file-row {
  display: block;
  width: 100%;
  text-align: left;
  border: 0;
  background: transparent;
  font-family: var(--font-sans);
  color: inherit;
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
}
.canon-file-row:first-of-type {
  border-top: 1px solid var(--border);
}
.canon-file-row-inner {
  display: grid;
  grid-template-columns: 180px 1fr auto auto;
  gap: 18px;
  align-items: baseline;
}
.canon-file-name {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--fg-strong);
  font-weight: 500;
  letter-spacing: 0.01em;
}
.canon-file-desc {
  font-size: 14px;
  color: var(--fg-muted);
  line-height: 1.45;
}
.canon-file-size {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-faint);
  letter-spacing: 0.04em;
}
.canon-file-chev {
  width: 12px; height: 12px;
  color: var(--fg-faint);
  transition: transform var(--duration-fast) var(--easing-default),
              color var(--duration-fast) var(--easing-default);
}
.canon-file-row[aria-expanded="true"] .canon-file-chev {
  transform: rotate(180deg);
  color: var(--accent);
}
.canon-file-row[aria-expanded="true"] .canon-file-name { color: var(--accent); }

.canon-file-preview {
  display: none;
  margin-top: 16px;
  padding: 24px 24px 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}
.canon-file-row[aria-expanded="true"] .canon-file-preview { display: block; }
.canon-file-preview pre {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--fg);
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 360px;
  overflow-y: auto;
}
.canon-file-preview-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  gap: 14px;
}
.canon-file-preview-meta {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-subtle);
}
.canon-file-preview-actions { display: flex; gap: 8px; }
.canon-file-btn {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  background: var(--bg);
  color: var(--fg-strong);
  border: 1px solid var(--border-strong);
  white-space: nowrap;
  transition: border-color var(--duration-fast) var(--easing-default),
              color var(--duration-fast) var(--easing-default);
}
.canon-file-btn:hover { border-color: var(--accent); color: var(--accent); }

.article-canon-foot {
  margin-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.article-canon-foot .meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-muted);
  letter-spacing: 0.04em;
}
.article-canon-crossref {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--fg-subtle);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--duration-fast) var(--easing-default),
              border-color var(--duration-fast) var(--easing-default);
}
.article-canon-crossref:hover { color: var(--accent); border-bottom-color: var(--accent); }

@media (max-width: 720px) {
  .canon-file-row-inner {
    grid-template-columns: 1fr auto;
    grid-template-areas:
      "name chev"
      "desc desc"
      "size size";
    gap: 6px 14px;
  }
  .canon-file-name { grid-area: name; }
  .canon-file-desc { grid-area: desc; font-size: 13.5px; }
  .canon-file-size { grid-area: size; }
  .canon-file-chev { grid-area: chev; align-self: center; }
  .canon-file-preview pre { font-size: 12px; max-height: 280px; }
  .canon-file-preview { padding: 18px 16px 14px; }
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .article-card {
    grid-template-columns: 180px 1fr;
    gap: 32px;
    padding: 32px 0;
  }
  .article-card-title { font-size: 24px; }
  .articles-hero { padding: 96px 0 48px; }
  .article-list { padding: 16px 0 96px; }
  .article-page { padding: 80px 0 80px; }
}

@media (max-width: 720px) {
  .article-card {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 28px 0;
  }
  .article-card-meta {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 10px;
  }
  .article-card-meta .author::after {
    content: " · ";
    color: var(--fg-faint);
    margin-left: 6px;
  }
}

@media (max-width: 560px) {
  .articles-hero { padding: 72px 0 32px; }
  .articles-hero-headline { font-size: 32px; }
  .article-list { padding: 8px 0 72px; }

  .article-page { padding: 64px 0 64px; }
  .article-title { font-size: 30px; }
  .article-meta { gap: 8px; font-size: 11px; }
  .article-prose blockquote {
    padding-left: 18px;
    font-size: 20px;
  }
  .article-attribution { margin-top: 48px; }
}