/* ============================================================
   Fortellar Resource Center + article layer
   Built entirely on colors_and_type.css tokens and the
   website.css / template.css component vocabulary.
   Montserrat display, Open Sans body, JetBrains Mono for
   small metadata. Navy + blue only, library radii + shadows.
   ============================================================ */

.rc {
  --rc-paper:      var(--color-white);
  --rc-paper-card: var(--color-white);
  --rc-ink:        var(--color-ink);
  --rc-slate:      var(--color-gray-500);
  --rc-line:       var(--border);
  --rc-line-strong:var(--border-strong);
  --rc-navy:       var(--color-navy-800);
  --rc-navy-700:   var(--color-navy-700);
  --rc-signal:     var(--color-blue-500);
  --rc-signal-dk:  var(--color-blue-600);
  --rc-display: var(--font-display);
  --rc-serif:   var(--font-body);
  --rc-mono:    var(--font-mono);
  background: var(--rc-paper);
  color: var(--rc-ink);
  min-height: 60vh;
}
.rc .container { max-width: var(--container-max); }

/* ---------- Category badge (library .badge / .moment__label vocabulary) ---------- */
.rc-stamp {
  display: inline-flex; align-items: center; gap: 8px; width: fit-content;
  font-family: var(--font-ui); font-size: 11px; font-weight: 700;
  letter-spacing: 0.08em; text-transform: uppercase; line-height: 16px;
  color: var(--color-navy-700); background: var(--color-gray-50);
  border: 1px solid var(--border); padding: 5px 12px;
  border-radius: var(--radius-pill);
}
.rc-stamp::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; flex: 0 0 auto; }
.rc-stamp--blog        { color: var(--color-blue-600); }
.rc-stamp--case        { color: var(--color-navy-800); }
.rc-stamp--briefing    { color: var(--color-navy-700); }
.rc-stamp--byte        { color: var(--color-blue-500); }
.rc-stamp--advancement { color: var(--success); }

/* ---------- Masthead (matches .page-hero) ---------- */
.rc-masthead-band {
  background:
    radial-gradient(900px 420px at 90% -20%, rgba(0,156,255,0.10), transparent 60%),
    radial-gradient(700px 360px at -10% 120%, rgba(0,77,163,0.06), transparent 60%),
    var(--color-white);
  border-bottom: 1px solid var(--border);
}
.rc-masthead { padding: 72px 0 80px; display: grid; grid-template-columns: 1.15fr 1fr; gap: var(--space-8); align-items: center; }
.rc-masthead__text { min-width: 0; }
.rc-masthead__grid { display: grid; grid-template-columns: 1fr 1fr; grid-auto-rows: 1fr; gap: var(--space-4); }
.rc-mh-img { border-radius: var(--radius-lg); overflow: hidden; background: var(--color-gray-100); aspect-ratio: 4 / 3; box-shadow: var(--shadow-sm); }
.rc-mh-img image-slot { width: 100%; height: 100%; display: block; --image-slot-radius: 0; }
.rc-mh-img--a { margin-top: 28px; }
.rc-mh-img--d { margin-top: -28px; }
.rc-masthead__tag {
  font-family: var(--font-body); font-weight: 600; font-size: var(--fs-sm); line-height: var(--lh-sm);
  letter-spacing: 0.12em; text-transform: uppercase; color: var(--color-navy-700);
  display: flex; align-items: center; gap: var(--space-3); margin-bottom: var(--space-5);
}
.rc-masthead__tag::after { content: ""; flex: 1; height: 1px; background: var(--border); }
.rc-masthead h1 {
  font-family: var(--font-display); font-weight: 700; letter-spacing: -0.02em;
  font-size: clamp(38px, 4.4vw, 56px); line-height: 1.1; color: var(--color-navy-800);
  margin: 0 0 var(--space-5); max-width: 20ch; text-wrap: balance;
}
.rc-masthead__lede {
  font-family: var(--font-body); font-size: 20px; line-height: 32px;
  color: var(--color-gray-500); max-width: 60ch; margin: 0; text-wrap: pretty;
}
.rc-masthead__meta {
  margin-top: var(--space-6); padding-top: var(--space-5); border-top: 1px solid var(--border);
  font-family: var(--font-ui); font-size: 13px; line-height: 19px; color: var(--color-gray-500);
  display: flex; flex-wrap: wrap; gap: 8px 32px;
}
.rc-masthead__meta b { color: var(--color-navy-800); font-weight: 600; }
@media (max-width: 995px){
  .rc-masthead { grid-template-columns: 1fr; gap: var(--space-7); padding: 56px 0 64px; }
  .rc-mh-img--a, .rc-mh-img--d { margin-top: 0; }
}

/* ---------- Index intro + filters ---------- */
.rc-subline { font-family: var(--font-body); font-size: 18px; line-height: 30px; color: var(--color-gray-500); max-width: 70ch; margin: var(--space-8) 0 0; }
.rc-subline:empty { display: none; }
.rc-section-head {
  font-family: var(--font-display); font-weight: 600; letter-spacing: -0.015em;
  font-size: var(--fs-h2); line-height: var(--lh-h2); color: var(--color-navy-800);
  margin: var(--space-9) 0 var(--space-2);
}
.rc-filter { display: flex; flex-wrap: wrap; gap: 10px; padding: var(--space-5) 0 0; }
.rc-chip {
  font-family: var(--font-ui); font-size: 13px; line-height: 18px; font-weight: 600;
  color: var(--color-navy-800); background: var(--color-white);
  border: 1px solid var(--border-strong); border-radius: var(--radius-pill);
  padding: 8px 16px; cursor: pointer;
  transition: all var(--dur-base) var(--ease-standard);
  display: inline-flex; align-items: center; gap: 8px;
}
.rc-chip:hover { border-color: var(--color-blue-500); color: var(--color-navy-700); background: var(--color-gray-50); }
.rc-chip:focus-visible { outline: none; box-shadow: var(--shadow-focus); }
.rc-chip__n { font-family: var(--font-mono); font-size: 11px; font-weight: 500; color: var(--color-gray-500); }
.rc-chip.is-active { background: var(--color-navy-800); color: #fff; border-color: var(--color-navy-800); }
.rc-chip.is-active .rc-chip__n { color: rgba(255,255,255,0.7); }

/* ---------- Grid ---------- */
.rc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-5); padding: var(--space-6) 0 var(--space-9); }
@media (max-width: 1100px){ .rc-grid { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 640px){ .rc-grid { grid-template-columns: 1fr; } }

/* ---------- Card (library .related__card / .pillar vocabulary) ---------- */
.rc-card {
  display: flex; flex-direction: column; text-decoration: none;
  background: var(--color-white); border: 1px solid var(--border);
  border-radius: var(--radius-lg); overflow: hidden; position: relative;
  transition: all var(--dur-base) var(--ease-standard);
}
.rc-card:hover {
  transform: translateY(-2px); border-color: var(--border-strong);
  box-shadow: var(--shadow-md); text-decoration: none;
}
.rc-card__rec {
  position: absolute; top: 12px; right: 14px; z-index: 2;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.06em;
  color: var(--color-gray-500); background: rgba(255,255,255,0.88);
  padding: 2px 8px; border-radius: var(--radius-pill);
}
.rc-card__thumb { position: relative; aspect-ratio: 16 / 9; background: var(--color-gray-100); overflow: hidden; }
.rc-card__thumb img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform 400ms var(--ease-standard); }
.rc-card:hover .rc-card__thumb img { transform: scale(1.035); }
.rc-card__thumb--empty { display: flex; align-items: center; justify-content: center; background: var(--gradient-brand-soft); }
.rc-card__thumb--empty .rc-stamp { background: rgba(255,255,255,0.85); border-color: transparent; }

/* video overlay */
.rc-card__play {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(180deg, rgba(0,42,89,0.05), rgba(0,42,89,0.45));
}
.rc-card__play span {
  width: 52px; height: 52px; border-radius: 50%;
  background: rgba(255,255,255,0.95); display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-md); transition: transform var(--dur-base) var(--ease-standard);
}
.rc-card:hover .rc-card__play span { transform: scale(1.08); }
.rc-card__play svg { margin-left: 3px; color: var(--color-navy-800); fill: currentColor; }
.rc-card__dur {
  position: absolute; bottom: 12px; right: 12px;
  font-family: var(--font-mono); font-size: 11px; font-weight: 500; color: #fff;
  background: rgba(0,42,89,0.78); padding: 3px 8px; border-radius: var(--radius-sm); letter-spacing: 0.04em;
}
.rc-card__body { padding: var(--space-5) var(--space-5) var(--space-5); display: flex; flex-direction: column; gap: var(--space-3); flex: 1; }
.rc-card__title {
  font-family: var(--font-display); font-weight: 700; font-size: 20px; line-height: 28px;
  color: var(--color-navy-800); margin: 0; letter-spacing: -0.01em; text-wrap: pretty;
}
.rc-card:hover .rc-card__title { color: var(--color-navy-700); }
.rc-card__desc {
  font-family: var(--font-body); font-size: 15px; line-height: 24px; color: var(--color-gray-500);
  margin: 0; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}
.rc-card__foot {
  margin-top: auto; padding-top: var(--space-4); border-top: 1px solid var(--border);
  display: flex; align-items: center; gap: 8px;
  font-family: var(--font-ui); font-size: 13px; line-height: 19px; color: var(--color-gray-500);
}
.rc-card__foot .dot { color: var(--color-gray-400); }
.rc-card__person { color: var(--color-navy-800); font-weight: 600; }

.rc-empty { font-family: var(--font-body); font-size: 16px; color: var(--color-gray-500); padding: var(--space-7) 0 var(--space-9); }

/* ---------- Newsletter band (library .final-cta) ---------- */
.rc-newsletter { background: var(--color-navy-800); color: #fff; position: relative; overflow: hidden; }
.rc-newsletter::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(600px 300px at 100% 0%, rgba(0,156,255,0.25), transparent 60%),
    radial-gradient(500px 300px at 0% 100%, rgba(0,77,163,0.30), transparent 60%);
}
.rc-newsletter__inner { position: relative; z-index: 1; max-width: 760px; margin: 0 auto; text-align: center; padding: 96px 0; }
.rc-newsletter__tag {
  font-family: var(--font-ui); font-weight: 700; font-size: 12px; letter-spacing: 0.10em;
  text-transform: uppercase; color: var(--color-blue-500); margin-bottom: var(--space-4);
}
.rc-newsletter h2 {
  font-family: var(--font-display); font-weight: 700; letter-spacing: -0.015em;
  font-size: var(--fs-h2); line-height: var(--lh-h2); margin: 0 0 var(--space-4); color: #fff;
}
.rc-newsletter p { font-family: var(--font-body); font-size: 18px; line-height: 28px; color: rgba(255,255,255,0.8); margin: 0 auto var(--space-6); max-width: 58ch; }

/* ---------- Case-study masthead (two-column header band) ---------- */
.rc-cs-head {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-7); align-items: center;
  background: var(--color-gray-50); border: 1px solid var(--border);
  border-radius: var(--radius-xl); padding: var(--space-7);
  margin: var(--space-6) 0 var(--space-2);
}
.rc-cs-head h1 {
  font-family: var(--font-display); font-weight: 700; letter-spacing: -0.02em;
  font-size: clamp(28px, 3.2vw, 40px); line-height: 1.15; color: var(--color-navy-800);
  margin: var(--space-4) 0 var(--space-4); text-wrap: balance;
}
.rc-cs-head .rc-read__deck {
  font-family: var(--font-body); font-weight: 400; font-size: 20px; line-height: 32px;
  color: var(--color-gray-500); margin: 0 0 var(--space-5); max-width: 60ch; text-wrap: pretty;
}
.rc-read__author { display: flex; align-items: center; gap: var(--space-3); margin: 0 0 var(--space-5); }
.rc-read__author img, .rc-read__author image-slot { width: 46px; height: 46px; border-radius: 50%; object-fit: cover; flex: 0 0 auto; display: block; }
.rc-read__author-name { font-family: var(--font-ui); font-weight: 600; font-size: 15px; line-height: 21px; color: var(--color-navy-800); }
.rc-read__author-role { font-family: var(--font-ui); font-size: 13px; line-height: 19px; color: var(--color-gray-500); }
.rc-read__byline { border: 0; padding: 0; }
.rc-cs-head__img { width: 100%; border-radius: var(--radius-lg); display: block; box-shadow: var(--shadow-sm); }
@media (max-width: 640px){ .rc-cs-head { padding: var(--space-6); } }

/* ============================================================
   Article / reading view
   ============================================================ */
.rc-article { padding: 0 0 var(--space-7); }
.rc-article__back {
  display: inline-flex; align-items: center; gap: 8px; margin: var(--space-6) 0 var(--space-5);
  font-family: var(--font-ui); font-size: 14px; font-weight: 600;
  color: var(--color-blue-600); text-decoration: none;
}
.rc-article__back:hover { color: var(--color-navy-700); text-decoration: none; gap: 12px; }
.rc-read { max-width: 760px; margin: 0 auto; }
.rc-read__stamp { margin-bottom: var(--space-5); }
.rc-read h1 {
  font-family: var(--font-display); font-weight: 700; letter-spacing: -0.02em;
  font-size: clamp(32px, 4vw, 48px); line-height: 1.15; color: var(--color-navy-800);
  margin: 0 0 var(--space-4); text-wrap: balance;
}
.rc-read__deck {
  font-family: var(--font-body); font-weight: 400; font-size: 20px; line-height: 32px;
  color: var(--color-gray-500); margin: 0 0 var(--space-5); max-width: 60ch; text-wrap: pretty;
}
.rc-read__author { display: flex; align-items: center; gap: var(--space-3); margin: 0 0 var(--space-5); }
.rc-read__author img, .rc-read__author image-slot { width: 46px; height: 46px; border-radius: 50%; object-fit: cover; flex: 0 0 auto; display: block; }
.rc-read__author-name { font-family: var(--font-ui); font-weight: 600; font-size: 15px; line-height: 21px; color: var(--color-navy-800); }
.rc-read__author-role { font-family: var(--font-ui); font-size: 13px; line-height: 19px; color: var(--color-gray-500); }
.rc-read__byline {
  font-family: var(--font-ui); font-size: 14px; line-height: 20px; color: var(--color-gray-500);
  display: flex; flex-wrap: wrap; gap: 6px 16px; align-items: center;
  padding-bottom: var(--space-5); border-bottom: 1px solid var(--border); margin-bottom: 0;
}
.rc-read__byline .sep { color: var(--color-gray-400); }
.rc-read__kicker {
  font-family: var(--font-body); font-weight: 600; font-size: var(--fs-sm); line-height: var(--lh-sm);
  letter-spacing: 0.12em; text-transform: uppercase; color: var(--color-navy-700); margin: 0 0 var(--space-3);
}
.rc-hero-img {
  width: 100%; aspect-ratio: 16 / 8; object-fit: cover; border-radius: var(--radius-lg);
  margin: var(--space-6) 0 var(--space-2); border: 1px solid var(--border);
}
.rc-hero-cap, .rc-fig-cap {
  font-family: var(--font-ui); font-size: 13px; line-height: 19px; color: var(--color-gray-500);
  margin: 0; text-align: left;
}

/* prose */
.rc-prose { font-family: var(--font-body); font-size: 18px; line-height: 30px; color: var(--color-ink); padding-top: var(--space-6); }
.rc-prose > p { margin: 0 0 var(--space-5); }
.rc-prose h2 {
  font-family: var(--font-display); font-weight: 600; font-size: var(--fs-h3); line-height: var(--lh-h3);
  color: var(--color-navy-800); letter-spacing: -0.01em; margin: var(--space-8) 0 var(--space-4);
}
.rc-prose h3 {
  font-family: var(--font-display); font-weight: 600; font-size: var(--fs-h5); line-height: var(--lh-h5);
  color: var(--color-navy-800); margin: var(--space-7) 0 var(--space-3);
}
.rc-prose strong { font-weight: 700; color: var(--color-navy-800); }
.rc-prose a { color: var(--color-blue-600); text-decoration: underline; text-underline-offset: 2px; text-decoration-thickness: 1px; }
.rc-prose a:hover { color: var(--color-navy-700); }
.rc-prose ul, .rc-prose ol { margin: 0 0 var(--space-5); padding-left: 1.3em; }
.rc-prose li { margin: 0 0 var(--space-2); }
.rc-prose img { width: 100%; border-radius: var(--radius-lg); margin: var(--space-7) 0 var(--space-2); border: 1px solid var(--border); }
.rc-prose figure { margin: var(--space-7) 0; }
.rc-prose figure img { margin: 0 0 var(--space-2); }
.rc-prose blockquote {
  font-family: var(--font-display); font-weight: 600; font-size: 24px; line-height: 34px;
  color: var(--color-navy-800); border-left: 3px solid var(--color-blue-500);
  padding: var(--space-1) 0 var(--space-1) var(--space-5); margin: var(--space-7) 0; letter-spacing: -0.01em;
}
.rc-prose blockquote.rc-pullquote {
  border-left: 0; text-align: center; max-width: 34ch; margin: var(--space-8) auto; padding: 0;
  font-size: 28px; line-height: 40px; color: var(--color-navy-800);
}
.rc-prose em { font-style: italic; }
.rc-prose hr { border: none; border-top: 1px solid var(--border); margin: var(--space-8) 0; }

/* pull-quote card */
.rc-pull {
  margin: var(--space-7) 0; padding: var(--space-5) var(--space-6); background: var(--color-gray-50);
  border: 1px solid var(--border); border-left: 3px solid var(--color-blue-500); border-radius: 0 var(--radius-md) var(--radius-md) 0;
}
.rc-pull p { font-family: var(--font-display); font-weight: 600; font-size: 20px; line-height: 30px; color: var(--color-navy-800); margin: 0; }

/* end note / CTA */
.rc-endnote {
  max-width: 760px; margin: var(--space-7) auto 0; padding: var(--space-6) var(--space-6);
  border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--color-gray-50);
  font-family: var(--font-body); font-size: 16px; line-height: 26px; color: var(--color-gray-600);
}
.rc-endnote a { color: var(--color-blue-600); font-weight: 600; }

/* related CTA band (library .final-cta) */
.rc-cta { background: var(--color-navy-800); color: #fff; margin-top: var(--space-9); position: relative; overflow: hidden; }
.rc-cta::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(600px 300px at 100% 0%, rgba(0,156,255,0.25), transparent 60%),
    radial-gradient(500px 300px at 0% 100%, rgba(0,77,163,0.30), transparent 60%);
}
.rc-cta__inner { position: relative; z-index: 1; max-width: 900px; margin: 0 auto; padding: 80px var(--container-pad); text-align: center; }
.rc-cta__eyebrow {
  font-family: var(--font-ui); font-weight: 700; font-size: 12px; letter-spacing: 0.10em;
  text-transform: uppercase; color: var(--color-blue-500); margin: 0 0 var(--space-4);
}
.rc-cta h2 {
  font-family: var(--font-display); font-weight: 700; font-size: var(--fs-h2); line-height: var(--lh-h2);
  margin: 0 0 var(--space-4); letter-spacing: -0.015em; color: #fff;
}
.rc-cta p { font-family: var(--font-body); font-size: 18px; line-height: 28px; color: rgba(255,255,255,0.8); max-width: 56ch; margin: 0 auto var(--space-6); }
.rc-cta .btn { background: var(--gradient-brand); color: #fff; border: none; }
.rc-cta .btn:hover { filter: brightness(1.05); }

/* article footer nav */
.rc-more { max-width: 760px; margin: var(--space-7) auto 0; }
.rc-more__label {
  font-family: var(--font-body); font-weight: 600; font-size: var(--fs-sm); line-height: var(--lh-sm);
  letter-spacing: 0.12em; text-transform: uppercase; color: var(--color-navy-700);
  display: flex; align-items: center; gap: var(--space-3); margin-bottom: var(--space-5);
}
.rc-more__label::after { content:""; flex:1; height:1px; background: var(--border); }

@media (max-width: 640px){
  .rc-prose { font-size: 17px; line-height: 28px; }
  .rc-newsletter__inner { padding: 64px 0; }
  .rc-cta__inner { padding: 56px var(--container-pad); }
  .rc-section-head { margin-top: var(--space-8); }
}