/* ========================================================================
   Artsürem Events — Shared stylesheet
   Akademik-klasik: Cormorant Garamond + Source Serif 4
   ======================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:wght@300;400;500;600;700&family=Source+Serif+4:opsz,wght@8..60,300;8..60,400;8..60,600&display=swap');

:root {
  --navy: #1B2C4F;
  --navy-soft: #2A3F66;
  --burgundy: #7A1F2C;
  --burgundy-soft: #9B3744;
  --paper: #FBF9F4;
  --paper-deep: #F4F0E6;
  --ink: #2A2A2A;
  --ink-soft: #555;
  --rule: #D9D2C2;
  --gold: #B89D6C;

  --serif-display: 'Cormorant Garamond', 'Garamond', 'Times New Roman', serif;
  --serif-body: 'Source Serif 4', 'Source Serif Pro', 'Georgia', serif;

  --max-width: 960px;
  --gutter: clamp(1.5rem, 4vw, 3rem);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--serif-body);
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
}

/* ========== TOP BAR ========== */

.topbar {
  background: var(--navy);
  color: var(--paper);
  padding: 0.55rem var(--gutter);
  font-family: var(--serif-body);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--gold);
}

.topbar a {
  color: var(--paper);
  text-decoration: none;
  opacity: 0.85;
  transition: opacity 0.2s;
}

.topbar a:hover {
  opacity: 1;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.lang-switch {
  display: flex;
  gap: 0.4rem;
  align-items: center;
}

.lang-switch .sep {
  opacity: 0.4;
}

.lang-switch .active {
  font-weight: 600;
  opacity: 1;
}

/* ========== MASTHEAD ========== */

.masthead {
  text-align: center;
  padding: 3.5rem var(--gutter) 2.2rem;
  border-bottom: 1px solid var(--rule);
  background: var(--paper);
}

.masthead .kicker {
  font-family: var(--serif-body);
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--burgundy);
  margin-bottom: 1rem;
  font-weight: 600;
}

.masthead h1 {
  font-family: var(--serif-display);
  font-weight: 500;
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  line-height: 1.1;
  color: var(--navy);
  margin: 0 0 0.8rem;
  letter-spacing: -0.005em;
}

.masthead h1 em {
  font-style: italic;
  font-weight: 400;
}

.masthead .subtitle {
  font-family: var(--serif-display);
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  font-style: italic;
  color: var(--ink-soft);
  font-weight: 400;
  margin: 0;
}

.masthead .meta {
  margin-top: 1.4rem;
  font-size: 0.92rem;
  color: var(--ink-soft);
  letter-spacing: 0.04em;
}

.masthead .meta strong {
  color: var(--navy);
  font-weight: 600;
}

.masthead-ornament {
  width: 60px;
  height: 1px;
  background: var(--gold);
  margin: 1.8rem auto 0;
  position: relative;
}

.masthead-ornament::before,
.masthead-ornament::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 4px;
  height: 4px;
  background: var(--gold);
  border-radius: 50%;
  transform: translateY(-50%);
}

.masthead-ornament::before { left: -10px; }
.masthead-ornament::after { right: -10px; }

/* ========== NAVIGATION ========== */

.mainnav {
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
  padding: 0.9rem var(--gutter);
  position: sticky;
  top: 0;
  z-index: 50;
}

.mainnav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.6rem;
}

.mainnav a {
  font-family: var(--serif-body);
  font-size: 0.82rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--ink);
  text-decoration: none;
  padding-bottom: 3px;
  border-bottom: 1px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.mainnav a:hover,
.mainnav a.current {
  color: var(--burgundy);
  border-bottom-color: var(--burgundy);
}

/* ========== MAIN CONTENT ========== */

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3rem var(--gutter) 4rem;
}

.lead {
  font-family: var(--serif-display);
  font-size: clamp(1.15rem, 2.2vw, 1.4rem);
  line-height: 1.55;
  color: var(--ink);
  font-weight: 400;
  font-style: italic;
  text-align: center;
  max-width: 36em;
  margin: 0 auto 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--rule);
}

h2 {
  font-family: var(--serif-display);
  font-weight: 500;
  font-size: clamp(1.5rem, 3vw, 2rem);
  color: var(--navy);
  margin: 2.8rem 0 1.2rem;
  letter-spacing: -0.005em;
}

h2:first-child {
  margin-top: 0;
}

h2.section-header {
  text-align: center;
  font-style: italic;
  position: relative;
  padding-bottom: 1rem;
  margin-bottom: 2rem;
}

h2.section-header::after {
  content: '';
  display: block;
  width: 40px;
  height: 1px;
  background: var(--gold);
  margin: 1rem auto 0;
}

h3 {
  font-family: var(--serif-display);
  font-weight: 600;
  font-size: 1.3rem;
  color: var(--burgundy);
  margin: 1.8rem 0 0.6rem;
}

p {
  margin: 0 0 1.2rem;
}

a {
  color: var(--burgundy);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  transition: color 0.2s;
}

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

strong {
  font-weight: 600;
  color: var(--ink);
}

/* ========== TABLES ========== */

table.dates {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.97rem;
}

table.dates th,
table.dates td {
  text-align: left;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--rule);
}

table.dates th {
  font-family: var(--serif-display);
  font-weight: 600;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--burgundy);
  border-bottom: 2px solid var(--burgundy);
}

table.dates td.event {
  width: 60%;
  color: var(--ink);
}

table.dates td.date {
  font-family: var(--serif-display);
  font-weight: 500;
  color: var(--navy);
  font-size: 1.05rem;
}

table.dates tr.tba td {
  color: var(--ink-soft);
  font-style: italic;
}

/* ========== KEYNOTE CARDS ========== */

.keynote-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem 2.5rem;
  margin-top: 2rem;
}

.keynote {
  padding-top: 1.5rem;
  border-top: 1px solid var(--rule);
}

.keynote .name {
  font-family: var(--serif-display);
  font-weight: 600;
  font-size: 1.35rem;
  color: var(--navy);
  margin: 0 0 0.3rem;
}

.keynote .affiliation {
  font-style: italic;
  color: var(--burgundy);
  font-size: 0.95rem;
  margin-bottom: 0.8rem;
}

.keynote .bio {
  font-size: 0.94rem;
  color: var(--ink-soft);
}

.keynote.tba .name {
  color: var(--ink-soft);
  font-style: italic;
}

/* ========== COMMITTEES ========== */

.committee {
  margin-bottom: 2.5rem;
}

.committee h3 {
  border-bottom: 1px solid var(--rule);
  padding-bottom: 0.5rem;
  margin-bottom: 1rem;
}

.committee ul {
  list-style: none;
  padding: 0;
  margin: 0;
  columns: 2;
  column-gap: 2.5rem;
}

@media (max-width: 600px) {
  .committee ul { columns: 1; }
}

.committee li {
  break-inside: avoid;
  margin-bottom: 0.7rem;
  font-size: 0.97rem;
}

.committee li .person {
  font-weight: 600;
  color: var(--navy);
}

.committee li .aff {
  display: block;
  font-size: 0.86rem;
  font-style: italic;
  color: var(--ink-soft);
}

/* ========== CTA BUTTONS ========== */

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin: 2.5rem 0;
}

.btn {
  display: inline-block;
  font-family: var(--serif-body);
  font-size: 0.85rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  padding: 0.85rem 1.8rem;
  text-decoration: none;
  border: 1px solid var(--navy);
  color: var(--navy);
  background: transparent;
  transition: all 0.2s;
  font-weight: 600;
}

.btn:hover {
  background: var(--navy);
  color: var(--paper);
}

.btn.primary {
  background: var(--burgundy);
  border-color: var(--burgundy);
  color: var(--paper);
}

.btn.primary:hover {
  background: var(--navy);
  border-color: var(--navy);
}

.btn.disabled {
  pointer-events: none;
  opacity: 0.5;
}

/* ========== NOTICES ========== */

.notice {
  background: var(--paper-deep);
  border-left: 3px solid var(--burgundy);
  padding: 1.2rem 1.5rem;
  margin: 2rem 0;
  font-size: 0.95rem;
}

.notice strong {
  color: var(--burgundy);
}

.tba-tag {
  display: inline-block;
  font-family: var(--serif-body);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  background: var(--paper-deep);
  color: var(--ink-soft);
  padding: 2px 8px;
  border: 1px solid var(--rule);
  vertical-align: middle;
  margin-left: 0.5rem;
  font-weight: 600;
}

/* ========== VITRINE (root) ========== */

.vitrine-hero {
  text-align: center;
  padding: 6rem var(--gutter) 4rem;
  max-width: 720px;
  margin: 0 auto;
}

.vitrine-hero h1 {
  font-family: var(--serif-display);
  font-weight: 400;
  font-size: clamp(2.5rem, 6vw, 4rem);
  color: var(--navy);
  margin: 0 0 1rem;
  letter-spacing: -0.01em;
}

.vitrine-hero h1 em {
  font-style: italic;
  color: var(--burgundy);
}

.vitrine-hero p {
  font-family: var(--serif-display);
  font-style: italic;
  font-size: 1.25rem;
  color: var(--ink-soft);
}

.event-card {
  max-width: 720px;
  margin: 0 auto 2.5rem;
  padding: 2.2rem 2rem;
  background: white;
  border: 1px solid var(--rule);
  border-top: 3px solid var(--burgundy);
  transition: transform 0.2s, box-shadow 0.2s;
}

.event-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(27, 44, 79, 0.08);
}

.event-card .kicker {
  font-family: var(--serif-body);
  font-size: 0.75rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--burgundy);
  font-weight: 600;
  margin-bottom: 0.6rem;
}

.event-card h2 {
  font-family: var(--serif-display);
  font-weight: 500;
  font-size: 1.8rem;
  color: var(--navy);
  margin: 0 0 0.5rem;
}

.event-card .when {
  font-family: var(--serif-display);
  font-style: italic;
  color: var(--ink-soft);
  font-size: 1.05rem;
  margin-bottom: 1rem;
}

.event-card .desc {
  font-size: 0.97rem;
  margin-bottom: 1.2rem;
}

.event-card a.more {
  font-family: var(--serif-body);
  font-size: 0.82rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  font-weight: 600;
  text-decoration: none;
  color: var(--burgundy);
  border-bottom: 1px solid var(--burgundy);
  padding-bottom: 2px;
}

.event-card a.more:hover {
  color: var(--navy);
  border-bottom-color: var(--navy);
}

/* ========== FOOTER ========== */

footer {
  background: var(--navy);
  color: var(--paper);
  padding: 2.5rem var(--gutter) 2rem;
  margin-top: 4rem;
  text-align: center;
  font-size: 0.88rem;
  letter-spacing: 0.04em;
}

footer .pub {
  font-family: var(--serif-display);
  font-style: italic;
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
  color: var(--paper);
}

footer .small {
  opacity: 0.7;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
}

footer a {
  color: var(--paper);
  opacity: 0.85;
}

footer a:hover {
  opacity: 1;
}

/* ========== UTILITIES ========== */

.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }

@media (max-width: 600px) {
  .topbar {
    font-size: 0.7rem;
    padding: 0.5rem var(--gutter);
  }
  .mainnav ul {
    gap: 1rem;
  }
  .mainnav a {
    font-size: 0.74rem;
    letter-spacing: 0.1em;
  }
}