/* ============================================================
   ROMRx Base, Article Library styles (v1)
   Electric Cobalt system. Layers on top of design-tokens.css.
   Corporate + Base library only, never on sport sites.
   ============================================================ */

/* ===== Breadcrumb ===== */
.rx-breadcrumb {
  font-family: var(--rx-font-mono);
  font-size: 0.78rem;
  color: var(--rx-text-dim);
  margin-bottom: 20px;
  letter-spacing: 0.04em;
}
.rx-breadcrumb ol { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; padding: 0; margin: 0; }
.rx-breadcrumb li { display: flex; align-items: center; gap: 8px; }
.rx-breadcrumb li:not(:last-child)::after { content: '/'; color: var(--rx-border-hi); }
.rx-breadcrumb a { color: var(--rx-text-muted); }
.rx-breadcrumb a:hover { color: var(--rx-text); }
.rx-breadcrumb [aria-current="page"] { color: var(--rx-text-muted); }

/* ===== Article header ===== */
.rx-article { padding-top: 40px; }
.rx-article-h1 {
  font-family: var(--rx-font-display);
  font-weight: 800;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0 0 16px;
}
.rx-article-meta {
  font-size: 0.9rem;
  color: var(--rx-text-muted);
  margin-bottom: 28px;
}
.rx-article-meta a { color: var(--rx-cobalt-2); }
.rx-article-meta a:hover { color: var(--rx-text); }

/* ===== Direct answer callout ===== */
.rx-answer {
  background: linear-gradient(135deg, rgba(59,91,255,0.12), rgba(124,77,255,0.08));
  border: 1px solid var(--rx-cobalt);
  border-radius: var(--rx-radius);
  padding: 22px 24px;
  margin-bottom: 40px;
  font-size: 1.08rem;
  line-height: 1.65;
}
.rx-answer p { margin: 0; }
.rx-answer strong { color: var(--rx-cobalt-2); }

/* ===== Prose ===== */
.rx-prose { font-size: 1.03rem; line-height: 1.75; color: var(--rx-text); }
.rx-prose h2 {
  font-family: var(--rx-font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 2.6vw, 1.9rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 48px 0 14px;
}
.rx-prose h3 {
  font-family: var(--rx-font-display);
  font-weight: 700;
  font-size: 1.2rem;
  margin: 28px 0 10px;
  color: var(--rx-text);
}
.rx-prose p { margin: 0 0 16px; color: var(--rx-text); }
.rx-prose ul, .rx-prose ol { margin: 0 0 18px; padding-left: 22px; color: var(--rx-text); }
.rx-prose li { margin-bottom: 8px; }
.rx-prose a {
  color: var(--rx-cobalt-2);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
.rx-prose a:hover { color: var(--rx-violet-2); }
.rx-prose strong { color: var(--rx-text); }

/* ===== Comparison / reference tables ===== */
.rx-table-wrap { overflow-x: auto; margin: 0 0 22px; }
.rx-prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  background: var(--rx-bg-2);
  border: 1px solid var(--rx-border);
  border-radius: var(--rx-radius-sm);
}
.rx-prose th, .rx-prose td {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--rx-border);
}
.rx-prose thead th {
  font-family: var(--rx-font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--rx-cobalt-2);
}
.rx-prose tbody tr:last-child td { border-bottom: none; }

/* ===== Callout (nuance / red flag) ===== */
.rx-note {
  border-left: 3px solid var(--rx-cobalt);
  background: rgba(255,255,255,0.03);
  padding: 14px 18px;
  border-radius: 8px;
  margin: 0 0 22px;
}
.rx-note.flag { border-left-color: var(--rx-red); }
.rx-note.flag strong { color: var(--rx-red); }

/* ===== FAQ ===== */
.rx-faq { margin-top: 8px; }
.rx-faq-item {
  border-bottom: 1px solid var(--rx-border);
  padding: 20px 0;
}
.rx-faq-item h3 {
  font-family: var(--rx-font-display);
  font-weight: 700;
  font-size: 1.15rem;
  margin: 0 0 8px;
}
.rx-faq-item p { margin: 0; color: var(--rx-text-muted); }

/* ===== Related articles ===== */
.rx-related { margin: 56px 0 0; }
.rx-related h2 {
  font-family: var(--rx-font-display);
  font-weight: 800;
  font-size: 1.5rem;
  margin-bottom: 18px;
}
.rx-related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}
.rx-related-card {
  display: block;
  padding: 18px 20px;
  background: var(--rx-bg-2);
  border: 1px solid var(--rx-border);
  border-radius: var(--rx-radius-sm);
  transition: border-color var(--rx-t-fast), transform var(--rx-t-fast);
}
.rx-related-card:hover { border-color: var(--rx-cobalt); transform: translateY(-2px); }
.rx-related-card .rx-related-kicker {
  font-family: var(--rx-font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--rx-text-dim);
  margin-bottom: 6px;
}
.rx-related-card .rx-related-title {
  font-family: var(--rx-font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--rx-text);
  line-height: 1.3;
}

/* ===== Base CTA card ===== */
.rx-cta-card {
  margin: 56px 0 0;
  padding: 36px 32px;
  border: 1px solid var(--rx-cobalt);
  border-radius: var(--rx-radius);
  background: linear-gradient(135deg, rgba(59,91,255,0.14), rgba(124,77,255,0.08));
  text-align: center;
}
.rx-cta-card h2 { font-family: var(--rx-font-display); font-weight: 800; font-size: 1.6rem; margin: 0 0 10px; }
.rx-cta-card p { color: var(--rx-text-muted); max-width: 560px; margin: 0 auto 22px; }

/* ===== Disclaimer + author ===== */
.rx-disclaimer {
  margin: 40px 0 0;
  padding: 18px 20px;
  border: 1px solid var(--rx-border);
  border-radius: var(--rx-radius-sm);
  background: rgba(255,255,255,0.015);
  font-size: 0.85rem;
  color: var(--rx-text-dim);
  line-height: 1.6;
}
.rx-author {
  margin: 24px 0 0;
  padding: 20px;
  border: 1px solid var(--rx-border);
  border-radius: var(--rx-radius-sm);
  background: var(--rx-bg-2);
}
.rx-author h2 { font-family: var(--rx-font-display); font-weight: 700; font-size: 1.1rem; margin: 0 0 8px; }
.rx-author p { font-size: 0.92rem; color: var(--rx-text-muted); margin: 0; line-height: 1.6; }
.rx-author a { color: var(--rx-cobalt-2); }

/* ============================================================
   HUB
   ============================================================ */
.rx-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;
}
.rx-hub-tools { text-align: center; }
.rx-hub-searchbar {
  display: flex;
  gap: 10px;
  max-width: 560px;
  margin: 0 auto;
  align-items: stretch;
}
.rx-hub-search {
  flex: 1 1 auto;
  min-width: 0;
  padding: 12px 16px;
  font: inherit;
  color: var(--rx-text);
  background: var(--rx-bg-2);
  border: 1px solid var(--rx-border);
  border-radius: var(--rx-radius);
}
.rx-hub-search::placeholder { color: var(--rx-text-dim); }
.rx-hub-search:focus-visible {
  outline: 2px solid var(--rx-cobalt);
  outline-offset: 2px;
  border-color: var(--rx-cobalt);
}
.rx-hub-reset {
  flex: 0 0 auto;
  padding: 12px 18px;
  font: inherit;
  color: var(--rx-text);
  background: transparent;
  border: 1px solid var(--rx-border);
  border-radius: var(--rx-radius);
  cursor: pointer;
}
.rx-hub-reset:hover { border-color: var(--rx-cobalt); }
.rx-hub-filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin: 16px auto 0;
  max-width: 720px;
}
.rx-filter {
  padding: 7px 14px;
  font-family: var(--rx-font-mono);
  font-size: 0.76rem;
  color: var(--rx-text-muted);
  background: var(--rx-bg-2);
  border: 1px solid var(--rx-border);
  border-radius: 999px;
  cursor: pointer;
  transition: border-color var(--rx-t-med), color var(--rx-t-med);
}
.rx-filter:hover { border-color: var(--rx-cobalt); color: var(--rx-text); }
.rx-filter:focus-visible { outline: 2px solid var(--rx-cobalt); outline-offset: 2px; }
.rx-filter.is-active {
  color: #fff;
  background: var(--rx-cobalt);
  border-color: var(--rx-cobalt);
}
.rx-hub-count {
  font-family: var(--rx-font-mono);
  font-size: 0.76rem;
  color: var(--rx-text-dim);
  margin: 14px 0 0;
}
.rx-hub-rss { font-size: 0.85rem; color: var(--rx-text-dim); margin: 8px 0 0; }
.rx-hub-rss a { color: var(--rx-cobalt-2); }
.rx-linkbtn {
  font: inherit;
  color: var(--rx-cobalt-2);
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  text-decoration: underline;
}
.rx-cluster { margin-top: 56px; }
.rx-cluster-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  border-bottom: 1px solid var(--rx-border);
  padding-bottom: 12px;
  margin-bottom: 24px;
}
.rx-cluster-head h2 { font-family: var(--rx-font-display); font-weight: 800; font-size: 1.6rem; margin: 0; }
.rx-cluster-head .rx-cluster-count { font-family: var(--rx-font-mono); font-size: 0.8rem; color: var(--rx-text-dim); }
.rx-hub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}
.rx-hub-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px;
  background: var(--rx-bg-2);
  border: 1px solid var(--rx-border);
  border-radius: var(--rx-radius);
  transition: border-color var(--rx-t-med), transform var(--rx-t-med);
}
/* The hidden attribute must win over the display rules above so JS-filtered
   cards and empty clusters are actually removed from view. */
.rx-hub-card[hidden], .rx-cluster[hidden] { display: none; }
.rx-hub-card:hover { border-color: var(--rx-cobalt); transform: translateY(-3px); }
.rx-hub-card .rx-hub-kicker {
  font-family: var(--rx-font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--rx-cobalt-2);
}
.rx-hub-card h3 {
  font-family: var(--rx-font-display);
  font-weight: 700;
  font-size: 1.2rem;
  line-height: 1.25;
  margin: 0;
  color: var(--rx-text);
}
.rx-hub-card p { font-size: 0.92rem; color: var(--rx-text-muted); margin: 0; line-height: 1.55; flex-grow: 1; }
.rx-hub-card .rx-hub-date { font-family: var(--rx-font-mono); font-size: 0.72rem; color: var(--rx-text-dim); }
.rx-hub-empty { color: var(--rx-text-dim); font-size: 0.95rem; padding: 24px 0; }

@media (max-width: 768px) {
  .rx-article { padding-top: 24px; }
  .rx-cluster-head { flex-direction: column; gap: 4px; }
}