/* ============================================================
   BulAIS - Balkan Academic Conference
   Warm burgundy + gold, serif headings, Sofia University heritage
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:wght@400;500;600;700&family=Source+Sans+3:wght@300;400;500;600;700&display=swap');

:root {
  --primary: #722f37;
  --primary-dark: #5a242a;
  --primary-light: #8d3b44;
  --accent: #c4a35a;
  --accent-dark: #a68647;
  --accent-light: #d4b97a;
  --cream: #faf6ee;
  --cream-dark: #f0e8d6;
  --paper: #fdfbf6;
  --ink: #2d2620;
  --ink-soft: #4a3f35;
  --text-muted: #6b5d50;
  --border: #d9cdb5;
  --border-soft: #ebe0c8;
  --gold-shimmer: linear-gradient(135deg, #c4a35a 0%, #e0c478 50%, #c4a35a 100%);
  --shadow: 0 2px 8px rgba(114, 47, 55, 0.08);
  --shadow-md: 0 6px 18px rgba(114, 47, 55, 0.12);
  --font-serif: "Cormorant Garamond", "Playfair Display", "Georgia", "Times New Roman", serif;
  --font-sans: "Source Sans 3", "Open Sans", -apple-system, BlinkMacSystemFont, sans-serif;
  --max-width: 1180px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 17px; }

body {
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.7;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography - elegant serif headings */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  color: var(--primary);
  line-height: 1.25;
  margin-bottom: 0.85rem;
  font-weight: 600;
}

h1 {
  font-size: 3rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}
h2 {
  font-size: 2.25rem;
  font-weight: 600;
  position: relative;
  padding-bottom: 0.5rem;
}
h2::after {
  content: "";
  display: block;
  width: 60px;
  height: 2px;
  background: var(--accent);
  margin-top: 0.5rem;
}
h3 {
  font-size: 1.625rem;
  font-weight: 500;
  color: var(--primary);
}
h4 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--ink-soft);
}
h5 {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent-dark);
}

p { margin-bottom: 1rem; color: var(--ink); }

a {
  color: var(--primary);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: all 0.25s ease;
}
a:hover {
  color: var(--accent-dark);
  border-bottom-color: var(--accent);
}

ul, ol { margin: 0 0 1rem 1.5rem; }
li { margin-bottom: 0.4rem; }

blockquote {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.25rem;
  color: var(--ink-soft);
  border-left: 3px solid var(--accent);
  padding: 0.5rem 1.25rem;
  margin: 1.5rem 0;
  background: var(--cream);
}
blockquote cite {
  display: block;
  font-family: var(--font-sans);
  font-style: normal;
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
}

hr {
  border: none;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--accent), transparent);
  margin: 2.5rem 0;
}

/* Top bar */
.topbar {
  background: var(--primary-dark);
  color: var(--cream);
  font-size: 0.82rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--accent-dark);
}
.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.topbar a { color: var(--accent-light); border: none; }
.topbar a:hover { color: #fff; }

/* Header */
.site-header {
  background: var(--paper);
  border-bottom: 3px double var(--accent);
  padding: 2rem 0 1.75rem;
  position: relative;
}
.site-header::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 6px;
  background: var(--gold-shimmer);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  font-family: var(--font-serif);
  font-size: 2rem;
  color: var(--primary);
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.1;
}
.logo .crest {
  display: inline-block;
  width: 44px;
  height: 44px;
  background: var(--primary);
  color: var(--accent);
  border: 2px solid var(--accent);
  border-radius: 50%;
  text-align: center;
  line-height: 40px;
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  margin-right: 0.65rem;
  vertical-align: middle;
  box-shadow: 0 0 0 3px var(--paper), 0 0 0 4px var(--accent-light);
}
.logo .tagline {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 0.35rem;
}

/* Navigation */
.main-nav {
  background: var(--primary);
  border-top: 1px solid var(--accent);
  border-bottom: 1px solid var(--accent);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 6px rgba(114, 47, 55, 0.15);
}
.main-nav ul {
  list-style: none;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}
.main-nav li { margin: 0; }
.main-nav a {
  display: block;
  padding: 0.95rem 1.4rem;
  color: var(--cream);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  border: none;
  border-bottom: 2px solid transparent;
  transition: all 0.25s ease;
}
.main-nav a:hover,
.main-nav a.active {
  color: var(--accent-light);
  border-bottom-color: var(--accent);
  background: rgba(0, 0, 0, 0.12);
}

/* Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Hero - heritage aesthetic */
.hero {
  background:
    linear-gradient(135deg, rgba(114, 47, 55, 0.92) 0%, rgba(90, 36, 42, 0.95) 100%),
    radial-gradient(circle at top right, rgba(196, 163, 90, 0.15), transparent 60%);
  color: var(--cream);
  padding: 5rem 0 4.5rem;
  position: relative;
  border-bottom: 3px solid var(--accent);
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(0deg, transparent 0, transparent 38px, rgba(196,163,90,0.06) 38px, rgba(196,163,90,0.06) 40px);
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  top: 25px; right: 25px; bottom: 25px; left: 25px;
  border: 1px solid rgba(196, 163, 90, 0.35);
  pointer-events: none;
}
.hero .container { position: relative; z-index: 2; }
.hero .ornament {
  display: inline-block;
  color: var(--accent);
  font-size: 1.5rem;
  letter-spacing: 0.5em;
  margin-bottom: 0.85rem;
}
.hero h1 {
  color: var(--cream);
  font-family: var(--font-serif);
  font-size: 3.5rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  line-height: 1.15;
}
.hero h1::after { display: none; }
.hero .subtitle {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-style: italic;
  color: var(--accent-light);
  font-weight: 400;
  max-width: 760px;
  margin-bottom: 1.75rem;
}
.hero .meta {
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(196, 163, 90, 0.3);
  font-size: 0.98rem;
}
.hero .meta span { color: var(--cream); }
.hero .meta strong {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent);
  margin-bottom: 0.3rem;
  font-weight: 600;
}

/* Page title */
.page-title {
  background: var(--cream);
  padding: 2.75rem 0 2.25rem;
  border-bottom: 1px solid var(--border);
  position: relative;
  text-align: center;
}
.page-title::after {
  content: "❦";
  display: block;
  color: var(--accent);
  font-size: 1.5rem;
  margin-top: 0.5rem;
}
.page-title h1 {
  margin: 0;
  font-size: 2.5rem;
  color: var(--primary);
}
.page-title h1::after { display: none; }
.breadcrumb {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
  font-style: italic;
}
.breadcrumb a { color: var(--text-muted); border: none; }
.breadcrumb a:hover { color: var(--primary); }

/* Main */
main {
  padding: 3.5rem 0 4.5rem;
  min-height: 50vh;
}

/* Content grid */
.content-grid {
  display: grid;
  grid-template-columns: 1fr 290px;
  gap: 3rem;
}
@media (max-width: 900px) {
  .content-grid { grid-template-columns: 1fr; }
}

article.content {
  font-size: 1.0625rem;
  line-height: 1.75;
}
article.content > h2 { margin-top: 2.5rem; }
article.content > h2:first-child { margin-top: 0; }
article.content > h3 { margin-top: 1.75rem; }
article.content p:first-of-type::first-letter {
  font-family: var(--font-serif);
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--primary);
  float: left;
  line-height: 0.9;
  padding: 0.3rem 0.5rem 0 0;
}

/* Sidebar */
.sidebar { font-size: 0.95rem; }
.sidebar-box {
  background: var(--cream);
  border: 1px solid var(--border);
  border-top: 3px solid var(--accent);
  padding: 1.5rem 1.4rem 1.25rem;
  margin-bottom: 1.75rem;
  position: relative;
}
.sidebar-box::before {
  content: "";
  position: absolute;
  top: -3px; left: -1px; right: -1px;
  height: 3px;
  background: var(--gold-shimmer);
}
.sidebar-box h4 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--primary);
  margin-bottom: 0.85rem;
  font-weight: 600;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}
.sidebar-box ul { list-style: none; margin: 0; }
.sidebar-box li {
  padding: 0.4rem 0;
  border-bottom: 1px dotted var(--border);
  font-size: 0.92rem;
  margin: 0;
}
.sidebar-box li:last-child { border-bottom: none; }
.sidebar-box li::before {
  content: "❧ ";
  color: var(--accent);
  margin-right: 0.25rem;
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.75rem;
  margin: 2.25rem 0;
}
.card {
  background: var(--paper);
  border: 1px solid var(--border);
  padding: 1.75rem 1.5rem 1.5rem;
  position: relative;
  transition: all 0.3s ease;
  box-shadow: var(--shadow);
}
.card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gold-shimmer);
  transform: scaleX(0.3);
  transform-origin: left;
  transition: transform 0.35s ease;
}
.card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.card:hover::before { transform: scaleX(1); }
.card h3 {
  font-size: 1.3rem;
  margin-bottom: 0.4rem;
  color: var(--primary);
}
.card .card-meta {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.95rem;
  color: var(--accent-dark);
  margin-bottom: 0.85rem;
}
.card p { font-size: 0.98rem; color: var(--ink-soft); }

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  background: var(--primary);
  color: var(--cream);
  font-family: var(--font-sans);
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 1px solid var(--primary);
  border-radius: 1px;
  cursor: pointer;
  transition: all 0.25s ease;
  text-decoration: none;
  position: relative;
  box-shadow: 0 2px 6px rgba(114, 47, 55, 0.18);
}
.btn:hover {
  background: var(--primary-dark);
  color: #fff;
  border-color: var(--accent);
  box-shadow: 0 4px 12px rgba(114, 47, 55, 0.28);
  transform: translateY(-1px);
}
.btn-gold {
  background: var(--accent);
  border-color: var(--accent-dark);
  color: var(--primary-dark);
}
.btn-gold:hover {
  background: var(--accent-dark);
  color: #fff;
  border-color: var(--primary);
}
.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
  box-shadow: none;
}
.btn-outline:hover {
  background: var(--primary);
  color: var(--cream);
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.75rem 0;
  font-size: 0.95rem;
  background: var(--paper);
  border: 1px solid var(--border);
}
caption {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.05rem;
  color: var(--primary);
  padding: 0.75rem;
  caption-side: top;
  text-align: left;
}
th, td {
  text-align: left;
  padding: 0.85rem 1.1rem;
  border-bottom: 1px solid var(--border-soft);
}
th {
  background: var(--cream);
  color: var(--primary);
  font-family: var(--font-serif);
  font-size: 1.02rem;
  font-weight: 600;
  border-bottom: 2px solid var(--accent);
}
tr:hover td { background: var(--cream); }

/* Forms */
form { margin: 1.5rem 0; }
.form-group { margin-bottom: 1.3rem; }
label {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 0.45rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
input[type=text], input[type=email], input[type=url], input[type=tel], input[type=password],
input[type=number], select, textarea {
  width: 100%;
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 2px;
  font-family: var(--font-sans);
  font-size: 1rem;
  background: var(--paper);
  color: var(--ink);
  transition: all 0.25s ease;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(196, 163, 90, 0.2);
  background: #fff;
}
textarea { min-height: 150px; resize: vertical; }

/* Callouts */
.callout {
  background: var(--cream);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  padding: 1.1rem 1.4rem;
  margin: 1.75rem 0;
  font-style: italic;
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--ink-soft);
}
.callout strong { color: var(--primary); font-style: normal; }
.callout-warning { border-left-color: #c97f1f; background: #fdf3e3; }
.callout-success { border-left-color: #5f8d4e; background: #eff5e8; }

/* Timeline */
.timeline {
  border-left: 2px solid var(--accent);
  padding-left: 1.75rem;
  margin: 2.25rem 0;
}
.timeline-item {
  position: relative;
  margin-bottom: 1.75rem;
}
.timeline-item::before {
  content: "";
  position: absolute;
  left: -2.1rem;
  top: 0.4rem;
  width: 14px;
  height: 14px;
  background: var(--accent);
  border: 2px solid var(--primary);
  border-radius: 50%;
  box-shadow: 0 0 0 3px var(--paper);
}
.timeline-item .date {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.95rem;
  color: var(--accent-dark);
  font-weight: 600;
}
.timeline-item h4 { margin: 0.2rem 0 0.4rem; }

/* Person cards */
.person-card {
  display: flex;
  gap: 1.25rem;
  padding: 1.5rem;
  background: var(--paper);
  border: 1px solid var(--border);
  border-bottom: 3px solid var(--accent);
  margin-bottom: 1.25rem;
  transition: all 0.3s ease;
}
.person-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.person-card .avatar {
  width: 80px;
  height: 80px;
  background: var(--primary);
  color: var(--accent);
  border: 2px solid var(--accent);
  border-radius: 50%;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 600;
  box-shadow: 0 0 0 4px var(--paper), 0 0 0 5px var(--border);
}
.person-card h4 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  margin-bottom: 0.2rem;
  color: var(--primary);
}
.person-card .affiliation {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.98rem;
  color: var(--text-muted);
}

/* Footer */
.site-footer {
  background: var(--primary-dark);
  color: var(--cream);
  padding: 3.5rem 0 1.5rem;
  margin-top: 4.5rem;
  position: relative;
  border-top: 4px solid var(--accent);
}
.site-footer::before {
  content: "";
  position: absolute;
  top: -4px; left: 0; right: 0;
  height: 4px;
  background: var(--gold-shimmer);
}
.site-footer .footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2.5rem;
  margin-bottom: 2.25rem;
}
.site-footer h5 {
  font-family: var(--font-serif);
  color: var(--accent-light);
  font-size: 1.15rem;
  font-weight: 600;
  text-transform: none;
  letter-spacing: 0.02em;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(196, 163, 90, 0.3);
}
.site-footer a { color: rgba(250, 246, 238, 0.85); border: none; }
.site-footer a:hover { color: var(--accent-light); }
.site-footer ul { list-style: none; margin: 0; }
.site-footer li { margin-bottom: 0.45rem; font-size: 0.94rem; }
.site-footer p { font-size: 0.94rem; color: rgba(250, 246, 238, 0.8); }
.footer-bottom {
  border-top: 1px solid rgba(196, 163, 90, 0.2);
  padding-top: 1.5rem;
  font-size: 0.88rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  color: rgba(250, 246, 238, 0.65);
  font-style: italic;
}

/* Sponsors */
.sponsors {
  background: var(--cream);
  padding: 2.5rem 0;
  text-align: center;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  position: relative;
}
.sponsors h5 {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--primary);
  font-size: 1.15rem;
  letter-spacing: 0.02em;
  text-transform: none;
  margin-bottom: 1.5rem;
}
.sponsor-logos {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 3rem;
  align-items: center;
}
.sponsor-logos img {
  max-height: 56px;
  opacity: 0.75;
  filter: sepia(20%) grayscale(40%);
  transition: all 0.3s ease;
}
.sponsor-logos img:hover { opacity: 1; filter: none; }

/* Decorative ornaments */
.ornament-divider {
  text-align: center;
  margin: 2.5rem 0;
  color: var(--accent);
  font-size: 1.5rem;
  letter-spacing: 0.5em;
}
.ornament-divider::before,
.ornament-divider::after {
  content: "";
  display: inline-block;
  width: 60px;
  height: 1px;
  background: var(--accent);
  vertical-align: middle;
  margin: 0 1rem;
}

/* Tags */
.tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: var(--cream);
  color: var(--primary);
  border: 1px solid var(--accent);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-right: 0.35rem;
  border-radius: 2px;
}
.tag-gold { background: var(--accent); color: var(--primary-dark); border-color: var(--accent-dark); }
.tag-burgundy { background: var(--primary); color: var(--cream); border-color: var(--primary-dark); }

/* Responsive */
@media (max-width: 768px) {
  html { font-size: 16px; }
  h1 { font-size: 2.25rem; }
  .hero { padding: 3.5rem 0 3rem; }
  .hero h1 { font-size: 2.5rem; }
  .hero .subtitle { font-size: 1.15rem; }
  .hero .meta { flex-direction: column; gap: 1.25rem; }
  .main-nav ul { flex-direction: column; }
  .main-nav a { padding: 0.75rem 1.25rem; border-bottom: 1px solid rgba(196, 163, 90, 0.2); }
  .topbar .container { flex-direction: column; gap: 0.25rem; text-align: center; }
  article.content p:first-of-type::first-letter { font-size: 2.75rem; }
}

@media print {
  .main-nav, .topbar, .site-footer, .sponsors { display: none; }
  body { color: #000; background: #fff; }
  a { color: var(--primary); }
}