/* ============================================================
   Publications Website — Clean Academic Theme
   ============================================================ */

:root {
  --color-bg: #fdfcf9;
  --color-surface: #ffffff;
  --color-text: #1f2328;
  --color-muted: #5b636e;
  --color-border: #e3e1da;
  --color-accent: #7a1f1f;     /* deep academic crimson */
  --color-accent-soft: #f5e9e9;
  --color-link: #7a1f1f;
  --color-link-hover: #4a1212;

  --font-serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --max-width: 960px;
  --radius: 4px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-serif);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* ---------- Layout ---------- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

main {
  padding: 48px 0 80px;
  min-height: 60vh;
}

/* ---------- Header / Nav ---------- */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  padding-bottom: 16px;
}

.site-title {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 600;
  margin: 0;
  letter-spacing: 0.2px;
}

.site-title a {
  color: var(--color-text);
  text-decoration: none;
}

.site-title small {
  display: block;
  font-size: 12px;
  font-weight: 400;
  color: var(--color-muted);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-top: 2px;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 6px 10px;
  font-size: 18px;
  cursor: pointer;
}

.site-nav ul {
  display: flex;
  gap: 24px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav a {
  font-family: var(--font-sans);
  font-size: 15px;
  color: var(--color-text);
  text-decoration: none;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s, color 0.2s;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

/* ---------- Typography ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.25;
  margin-top: 0;
}

h1 { font-size: 36px; margin-bottom: 12px; }
h2 { font-size: 26px; margin: 40px 0 16px; }
h3 { font-size: 20px; margin: 24px 0 8px; }

p { margin: 0 0 16px; }

a {
  color: var(--color-link);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

a:hover { color: var(--color-link-hover); }

.lead {
  font-size: 19px;
  color: var(--color-muted);
  margin-bottom: 32px;
  max-width: 680px;
}

.section-intro {
  color: var(--color-muted);
  margin-bottom: 32px;
  max-width: 680px;
}

/* ---------- Hero ---------- */
.hero {
  padding: 32px 0 16px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 32px;
}

.hero h1 { font-size: 42px; }

/* ---------- Cards / Lists ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px 22px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s, transform 0.2s;
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card h3 { margin-top: 0; }

.card .meta {
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--color-muted);
  margin-bottom: 10px;
}

/* ---------- Publication list ---------- */
.pub-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-bottom: 24px;
  font-family: var(--font-sans);
  font-size: 14px;
}

.pub-filters label {
  color: var(--color-muted);
  margin-right: 4px;
}

.pub-filters select,
.pub-filters input[type="search"] {
  font-family: var(--font-sans);
  font-size: 14px;
  padding: 6px 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
}

.publication {
  padding: 20px 0;
  border-bottom: 1px solid var(--color-border);
}

.publication:last-child { border-bottom: none; }

.publication .pub-title {
  font-size: 19px;
  font-weight: 600;
  margin: 0 0 6px;
}

.publication .pub-authors {
  font-style: italic;
  color: var(--color-text);
  margin: 0 0 4px;
}

.publication .pub-venue {
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--color-muted);
  margin: 0 0 10px;
}

.publication .pub-abstract {
  font-size: 16px;
  color: var(--color-text);
  margin: 0 0 12px;
}

.pub-tags {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-right: 12px;
}

.tag {
  font-family: var(--font-sans);
  font-size: 12px;
  color: var(--color-accent);
  background: var(--color-accent-soft);
  padding: 2px 8px;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.pub-links {
  display: inline-flex;
  gap: 12px;
  font-family: var(--font-sans);
  font-size: 14px;
}

.pub-links a {
  text-decoration: none;
  border: 1px solid var(--color-border);
  padding: 4px 10px;
  border-radius: var(--radius);
  color: var(--color-text);
}

.pub-links a:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* ---------- Ads ---------- */
.ad-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}

.ad {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
}

.ad-image {
  background: linear-gradient(135deg, var(--color-accent-soft), #fff);
  aspect-ratio: 16 / 9;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--color-muted);
  text-align: center;
  padding: 12px;
}

.ad-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.ad-body {
  padding: 16px 18px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.ad-body h3 { font-size: 18px; margin: 0 0 6px; }

.ad-body .ad-meta {
  font-family: var(--font-sans);
  font-size: 12px;
  color: var(--color-muted);
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.ad-body p { font-size: 15px; margin-bottom: 12px; flex: 1; }

.btn {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 14px;
  background: var(--color-accent);
  color: #fff;
  padding: 8px 14px;
  border-radius: var(--radius);
  text-decoration: none;
  align-self: flex-start;
  transition: background 0.2s;
}

.btn:hover { background: var(--color-link-hover); color: #fff; }

.btn.btn-outline {
  background: transparent;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
}

.btn.btn-outline:hover { background: var(--color-accent); color: #fff; }

.btn-lg {
  font-size: 16px;
  padding: 12px 22px;
}

/* ---------- CTA band ---------- */
.cta-band {
  background: var(--color-accent);
  color: #fff;
  padding: 40px 0;
  margin: 56px 0 0;
  text-align: center;
  border-radius: var(--radius);
}

.cta-band h2 {
  color: #fff;
  margin: 0 0 10px;
}

.cta-band p {
  color: rgba(255, 255, 255, 0.92);
  max-width: 640px;
  margin: 0 auto 20px;
  font-size: 17px;
}

.cta-band .btn {
  background: #fff;
  color: var(--color-accent);
  font-weight: 600;
}

.cta-band .btn:hover {
  background: var(--color-accent-soft);
  color: var(--color-accent);
}

.cta-band a.email-link {
  color: #fff;
  font-family: var(--font-sans);
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* ---------- Service icon cards (used on homepage + services page) ---------- */
.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}

.service-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px 22px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s, transform 0.2s;
}

.service-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.service-card .service-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-accent-soft);
  color: var(--color-accent);
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
}

.service-card h3 { margin: 0 0 8px; font-size: 19px; }

.service-card p { font-size: 15px; margin: 0; color: var(--color-text); }

/* ---------- Process steps ---------- */
.process-list {
  counter-reset: step;
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.process-list li {
  counter-increment: step;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
  position: relative;
  padding-top: 48px;
}

.process-list li::before {
  content: counter(step);
  position: absolute;
  top: 14px;
  left: 18px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.process-list li h3 { font-size: 17px; margin: 0 0 6px; }
.process-list li p { font-size: 14px; margin: 0; color: var(--color-muted); }

/* ---------- Email highlight ---------- */
.email-cta {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 17px;
  font-weight: 600;
  background: var(--color-accent-soft);
  color: var(--color-accent);
  padding: 10px 18px;
  border-radius: var(--radius);
  text-decoration: none;
  border: 1px solid var(--color-accent);
}

.email-cta:hover {
  background: var(--color-accent);
  color: #fff;
}

/* ---------- Blog ---------- */
.article-list .article {
  padding: 24px 0;
  border-bottom: 1px solid var(--color-border);
}

.article-list .article:last-child { border-bottom: none; }

.article h3 { margin-bottom: 6px; }

.article .meta {
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--color-muted);
  margin-bottom: 10px;
}

.article p { margin-bottom: 8px; }

.read-more {
  font-family: var(--font-sans);
  font-size: 14px;
}

/* ---------- About / Contact ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 32px;
  align-items: start;
}

.avatar {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: var(--color-accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 60px;
  color: var(--color-accent);
  border: 1px solid var(--color-border);
}

.contact-info {
  font-family: var(--font-sans);
  font-size: 15px;
  list-style: none;
  padding: 0;
  margin: 16px 0;
}

.contact-info li {
  padding: 6px 0;
  border-bottom: 1px solid var(--color-border);
}

.contact-info li strong {
  display: inline-block;
  width: 110px;
  color: var(--color-muted);
  font-weight: 500;
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 24px 0;
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--color-muted);
  text-align: center;
  background: var(--color-surface);
}

.site-footer a { color: var(--color-muted); }

/* ---------- Responsive ---------- */
@media (max-width: 720px) {
  body { font-size: 16px; }
  h1 { font-size: 30px; }
  .hero h1 { font-size: 34px; }
  h2 { font-size: 22px; }

  .nav-toggle { display: inline-block; }

  .site-nav {
    display: none;
    width: 100%;
    margin-top: 12px;
  }

  .site-nav.open { display: block; }

  .site-header .container {
    flex-wrap: wrap;
  }

  .site-nav ul {
    flex-direction: column;
    gap: 4px;
  }

  .site-nav a {
    display: block;
    padding: 10px 0;
    border-bottom: 1px solid var(--color-border);
  }

  .about-grid {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
  }
}