@import url("https://fonts.googleapis.com/css2?family=Montserrat:ital,wght@0,400;0,500;0,600;0,700;0,800;1,400&family=Playfair+Display:ital,wght@0,500;0,600;0,700;0,900;1,600&display=swap");

:root {
  --ink: #0d0c5c;
  --ink-soft: #201e78;
  --paper: #f7f7fb;
  --card: #ffffff;
  --accent: #ffac33;
  --accent-dark: #d98a17;
  --accent-tint: #fff2dd;
  --text: #15142f;
  --muted: #7c7c93;
  --border: #e7e7ef;
  --radius-lg: 26px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --radius-pill: 999px;
  --shadow: 0 16px 40px -20px rgba(23, 19, 33, 0.35);
  --shadow-sm: 0 6px 18px -10px rgba(23, 19, 33, 0.22);
  --serif: "Playfair Display", Georgia, serif;
  --sans: "Montserrat", system-ui, -apple-system, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; scroll-behavior: smooth; }

body {
  background: var(--paper);
  color: var(--text);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}

a { color: inherit; }

/* ---------- utility bar ---------- */

.utility-bar {
  max-width: 1080px;
  margin: 0 auto;
  padding: 20px 24px 0;
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.home-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  border: 1.5px solid var(--border);
  background: var(--card);
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  font-size: 13px;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  transition: border-color .15s, color .15s;
}

.home-btn:hover { border-color: var(--ink); color: var(--ink); }

.lang-toggle {
  display: inline-flex;
  gap: 2px;
  background: var(--card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 3px;
  margin-left: auto;
}

.lang-btn {
  border: none;
  background: transparent;
  color: var(--muted);
  font-family: inherit;
  font-weight: 800;
  font-size: 12px;
  letter-spacing: 0.02em;
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: background .15s, color .15s;
}

.lang-btn.active { background: var(--ink); color: #fff; }
.lang-btn:not(.active):hover { color: var(--ink); }

/* ---------- hero ---------- */

.hero {
  background: var(--card);
  color: var(--text);
  border-bottom: 1px solid var(--border);
  padding: 26px 24px 22px;
}

.hero-inner { max-width: 1080px; margin: 0 auto; }

.eyebrow {
  color: var(--accent-dark);
  font-weight: 800;
  font-size: 12.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.hero h1 {
  font-family: var(--sans);
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin: 0 0 10px;
}

.hero .lede {
  max-width: 680px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.5;
  margin: 0;
}

/* ---------- main / wrap ---------- */

.wrap { max-width: 1080px; margin: 0 auto; padding: 28px 24px 60px; }

.section-label {
  font-weight: 800;
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 16px;
}

/* ---------- research card grid ---------- */

.research-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

.research-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.research-card-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.research-card-year {
  background: var(--accent-tint);
  color: var(--accent-dark);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
}

.research-card h2 {
  font-family: var(--serif);
  font-size: 21px;
  line-height: 1.28;
  margin: 0;
}

.research-card h2 a {
  color: inherit;
  text-decoration: none;
}

.research-card h2 a:hover {
  text-decoration: underline;
  text-decoration-color: var(--accent);
}

.research-card p {
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.55;
  margin: 0;
  flex-grow: 1;
}

.research-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.research-tag {
  font-size: 11.5px;
  font-weight: 700;
  color: var(--ink-soft);
  background: #eeeefb;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
}

.research-card-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
  padding-top: 4px;
}

.research-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  font-weight: 700;
  font-size: 13.5px;
  padding: 9px 16px;
  border-radius: var(--radius-pill);
  transition: transform .12s, box-shadow .12s;
}

.research-link.primary { background: var(--ink); color: #fff; }
.research-link.secondary { background: var(--paper); color: var(--ink); border: 1.5px solid var(--border); }
.research-link:hover { transform: translateY(-1px); box-shadow: var(--shadow-sm); }

.research-empty {
  color: var(--muted);
  font-size: 14px;
  padding: 20px 0;
}

/* ---------- article ---------- */

.article-hero {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 34px 24px 28px;
}

.article-hero-inner { max-width: 760px; margin: 0 auto; }

.article-hero h1 {
  font-family: var(--sans);
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin: 10px 0 14px;
}

.article-byline {
  color: var(--muted);
  font-size: 14px;
  margin: 0 0 6px;
}

.article-alt-lang {
  font-size: 14px;
  margin: 10px 0 0;
}

.article-alt-lang a {
  color: var(--ink);
  font-weight: 700;
  text-decoration: underline;
}

.article-wrap { max-width: 760px; margin: 0 auto; padding: 30px 24px 70px; }

.article-main { min-width: 0; }

/* desktop two-column layout: sticky TOC sidebar on the left, matching
   promedia-community-guide's .cg-layout/.cg-toc pattern */
@media (min-width: 1100px) {
  .article-wrap { max-width: 1180px; }

  .article-layout {
    display: grid;
    grid-template-columns: 250px minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .article-toc {
    position: sticky;
    top: 20px;
    max-height: calc(100vh - 40px);
    overflow-y: auto;
    align-self: start;
    margin: 0;
    padding: 4px 10px 4px 0;
    background: transparent;
    border-radius: 0;
    box-shadow: none;
  }

  .article-main { max-width: 760px; }
}

.article-toc {
  background: var(--accent-tint);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  margin: 0 0 32px;
}

.article-toc-title {
  font-weight: 800;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent-dark);
  margin: 0 0 10px;
}

.article-toc ol { margin: 0; padding: 0; list-style: none; }
.article-toc li { margin: 0; min-width: 0; }

.article-toc a {
  display: block;
  padding: 5px 8px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  font-size: 13.5px;
  line-height: 1.4;
  color: var(--text);
}

.article-toc a:hover { color: var(--ink); background: rgba(255, 172, 51, 0.16); }

.article-toc a.active {
  color: var(--ink);
  background: rgba(255, 172, 51, 0.16);
  font-weight: 700;
  box-shadow: inset 3px 0 0 var(--accent);
}

.article-body h2 {
  font-family: var(--serif);
  font-size: 26px;
  margin: 44px 0 16px;
  scroll-margin-top: 20px;
}

.article-body h3 {
  font-family: var(--serif);
  font-size: 20px;
  margin: 30px 0 12px;
  scroll-margin-top: 20px;
}

.article-body p { font-size: 16px; line-height: 1.7; margin: 0 0 18px; }

.article-body ul, .article-body ol {
  font-size: 16px;
  line-height: 1.7;
  margin: 0 0 18px;
  padding-left: 22px;
}

.article-body li { margin: 0 0 8px; }

.article-body a { color: var(--ink); text-decoration: underline; text-decoration-color: var(--border); }
.article-body a:hover { text-decoration-color: var(--ink); }

.article-body blockquote {
  margin: 0 0 20px;
  padding: 14px 18px;
  background: var(--paper);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 14.5px;
  color: var(--muted);
}

.article-note {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  font-size: 14px;
  color: var(--muted);
  margin: 0 0 30px;
}

.article-note strong { color: var(--text); }

.article-disclosure {
  font-size: 14.5px;
  color: var(--muted);
  font-style: italic;
  margin: 0 0 22px;
}

.article-bio {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  margin-top: 40px;
  font-size: 15px;
  color: var(--muted);
}

.article-bio strong { color: var(--text); }

/* ---------- footer ---------- */

.site-footer {
  max-width: 1080px;
  margin: 0 auto;
  padding: 30px 24px 50px;
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 13px;
  border-top: 1px solid var(--border);
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--muted);
  font-weight: 700;
  font-size: 13px;
}

.footer-logo { height: 22px; width: auto; }

@media (max-width: 640px) {
  .research-grid { grid-template-columns: 1fr; }
}