/* ============================================
   BSides Aarhus 2026 — Dark Theme
   ============================================ */

:root {
  --color-bg: #0a0a0f;
  --color-bg-elevated: #12121a;
  --color-bg-card: #1a1a25;
  --color-text: #e8e8ed;
  --color-text-muted: #8888a0;
  --color-accent: #4AB8D2;
  --color-accent-light: #6DD0E7;
  --color-accent-glow: rgba(74, 184, 210, 0.15);
  --color-border: #2a2a3a;
  --color-success: #22c55e;
  --color-warning: #f59e0b;

  --font-heading: 'Inter', system-ui, -apple-system, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;

  --max-width: 1200px;
  --nav-height: 64px;
  --radius: 8px;
  --radius-lg: 12px;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  background-image:
    radial-gradient(ellipse at 50% 0%, rgba(74, 184, 210, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(74, 184, 210, 0.04) 0%, transparent 40%),
    radial-gradient(ellipse at 20% 80%, rgba(74, 184, 210, 0.03) 0%, transparent 40%);
  background-attachment: fixed;
}
a { color: var(--color-accent-light); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--color-accent); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
h1, h2, h3, h4 { font-family: var(--font-heading); font-weight: 700; line-height: 1.2; }
h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h3 { font-size: 1.25rem; }

/* Layout */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 var(--space-lg); }
.section { padding: var(--space-2xl) 0; position: relative; }
.section:nth-child(even)::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-accent-glow), var(--color-accent), var(--color-accent-glow), transparent);
  opacity: 0.4;
}
.section-header { text-align: center; margin-bottom: var(--space-xl); }
.section-header p { color: var(--color-text-muted); margin-top: var(--space-sm); font-size: 1.1rem; }

/* Homepage content (rendered from markdown) */
.section > .container > p,
.section > .container > h3,
.section > .container > ul {
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}
.section > .container > p {
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: var(--space-md);
  text-align: center;
}
.section > .container > h3 {
  text-align: center;
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
}
.section > .container > ul {
  list-style: none;
  margin-bottom: var(--space-lg);
}
.section > .container > ul li {
  color: var(--color-text-muted);
  line-height: 1.7;
  padding: var(--space-xs) 0;
  padding-left: var(--space-lg);
  position: relative;
}
.section > .container > ul li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--color-accent);
}
.section > .container > ul li strong {
  color: var(--color-text);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.2s;
  border: none;
  cursor: pointer;
  text-decoration: none;
}
.btn-primary {
  background: var(--color-accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--color-accent-light);
  color: #fff;
  box-shadow: 0 0 20px var(--color-accent-glow);
}
.btn-secondary {
  background: transparent;
  color: var(--color-accent-light);
  border: 2px solid var(--color-accent);
}
.btn-secondary:hover {
  background: var(--color-accent-glow);
  color: #fff;
}
.btn-lg { padding: 1rem 2.5rem; font-size: 1.125rem; }
.btn-sm { padding: 0.5rem 1.25rem; font-size: 0.875rem; }

/* Navigation */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(10, 10, 15, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
}
.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  height: 100%;
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}
.nav-logo { display: flex; align-items: center; }
.nav-logo-img { height: 72px; width: auto; }
.footer-logo-img { height: 256px; width: auto; }
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-left: auto;
}
.nav-links a {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  padding: var(--space-xs) var(--space-sm);
  transition: color 0.2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--color-text); }
.nav-cta { margin-left: var(--space-sm); }
.nav-cta .btn { color: #fff; }
.lang-switch { margin-left: var(--space-md); }
.lang-link {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  font-weight: 500;
  padding: var(--space-xs) var(--space-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: all 0.2s;
}
.lang-link:hover { color: var(--color-text); border-color: var(--color-accent); }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: var(--space-sm); }
.hamburger, .hamburger::before, .hamburger::after {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: all 0.3s;
  position: relative;
}
.hamburger::before, .hamburger::after { content: ''; position: absolute; left: 0; }
.hamburger::before { top: -7px; }
.hamburger::after { top: 7px; }

/* Hero */
.hero {
  padding-top: calc(var(--nav-height) + var(--space-2xl));
  padding-bottom: var(--space-2xl);
  text-align: center;
  background: radial-gradient(ellipse at 50% 0%, var(--color-accent-glow) 0%, transparent 60%);
}
.hero-content { max-width: 800px; margin: 0 auto; padding: 0 var(--space-lg); }
.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-md);
}
.hero h1 .accent { color: var(--color-accent-light); }
.hero-subtitle {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-weight: 500;
}
.hero-date {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-xl);
}
.hero-cta { display: flex; gap: var(--space-md); justify-content: center; flex-wrap: wrap; }

/* Countdown */
.countdown {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}
.countdown-item { text-align: center; }
.countdown-value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--color-accent-light);
  line-height: 1;
}
.countdown-label {
  display: block;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: var(--space-xs);
}

/* Feature Cards (homepage) */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
}
.feature-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all 0.3s;
}
.feature-card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 0 30px var(--color-accent-glow);
  transform: translateY(-2px);
}
.feature-icon {
  font-size: 2rem;
  margin-bottom: var(--space-md);
}
.feature-card h3 { margin-bottom: var(--space-sm); }
.feature-card p { color: var(--color-text-muted); font-size: 0.95rem; }

/* Venue Teaser (Homepage) */
.venue-teaser {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}
.venue-teaser img {
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  width: 100%;
  height: auto;
}
.venue-teaser-info h3 {
  margin-bottom: var(--space-sm);
}
.venue-teaser-info p {
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-lg);
}
@media (max-width: 768px) {
  .venue-teaser { grid-template-columns: 1fr; }
}

/* Schedule / Agenda */
.schedule { margin-top: var(--space-lg); }
.schedule-header {
  display: grid;
  grid-template-columns: 100px 1fr 1fr;
  gap: 1px;
  margin-bottom: 1px;
}
.schedule-header-cell {
  background: var(--color-accent);
  color: #fff;
  font-weight: 700;
  padding: var(--space-md);
  text-align: center;
  font-size: 1.1rem;
}
.schedule-row {
  display: grid;
  grid-template-columns: 100px 1fr 1fr;
  gap: 1px;
  margin-bottom: 1px;
}
.schedule-time {
  background: var(--color-bg-elevated);
  padding: var(--space-md);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--color-accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 500;
}
.schedule-slot {
  background: var(--color-bg-card);
  padding: var(--space-md);
  border-left: 1px solid var(--color-border);
}
.schedule-slot-track { display: none; }
.schedule-slot h4 { font-size: 0.95rem; margin-bottom: var(--space-xs); }
.schedule-slot .speaker { color: var(--color-text-muted); font-size: 0.85rem; }
.schedule-desc { margin-top: var(--space-sm); font-size: 0.9rem; }
.schedule-desc summary { cursor: pointer; color: var(--color-text-muted); font-size: 0.85rem; user-select: none; list-style: none; }
.schedule-desc summary::-webkit-details-marker { display: none; }
.schedule-desc summary:hover { color: var(--color-text); }
.schedule-desc summary .preview { display: inline; }
.schedule-desc summary .more,
.schedule-desc summary .less { color: var(--color-accent-light); font-weight: 500; margin-left: 0.25em; white-space: nowrap; }
.schedule-desc summary:hover .more,
.schedule-desc summary:hover .less { color: var(--color-accent); }
.schedule-desc summary .less { display: none; }
.schedule-desc[open] summary .preview,
.schedule-desc[open] summary .more { display: none; }
.schedule-desc[open] summary .less { display: inline; }
.schedule-desc[open] summary { margin-bottom: var(--space-sm); }
.schedule-desc-body { color: var(--color-text); }
.schedule-desc-body .abstract { margin-bottom: var(--space-md); }
.schedule-desc-body p { margin: 0 0 var(--space-xs); }
.schedule-desc-body ul { margin: 0 0 var(--space-sm) 1.25em; padding: 0; }
.schedule-desc-body li { margin-bottom: 0.25em; }
.schedule-desc-body .speakers { border-top: 1px solid var(--color-border); padding-top: var(--space-sm); display: flex; flex-direction: column; gap: var(--space-sm); }
.schedule-desc-body .speaker-card { font-size: 0.85rem; }
.schedule-desc-body .speaker-name { font-weight: 600; }
.schedule-desc-body .speaker-tagline { color: var(--color-text-muted); font-weight: 400; }
.schedule-desc-body .speaker-bio { color: var(--color-text-muted); margin-top: 0.25em; }
.schedule-desc-body .speaker-bio p { margin: 0 0 0.5em; }

/* Session / Speaker pages */
.container--narrow { max-width: 760px; }
.session-meta { color: var(--color-text-muted); font-size: 0.95rem; margin: var(--space-xs) 0; }
.session-meta a { color: var(--color-accent-light); }
.session-meta a:hover { color: var(--color-accent); }
.session-detail .session-abstract { font-size: 1.05rem; line-height: 1.7; margin-bottom: var(--space-xl); }
.session-detail .session-abstract ul { margin: 0 0 var(--space-md) 1.25em; }
.session-detail h2, .speaker-detail h2 { margin-top: var(--space-lg); margin-bottom: var(--space-md); }
.speaker-card--full { background: var(--color-bg-card); border: 1px solid var(--color-border); border-radius: 8px; padding: var(--space-md); margin-bottom: var(--space-md); }
.speaker-card--full h3 { margin: 0 0 var(--space-xs); }
.speaker-card--full h3 a { color: var(--color-text); }
.speaker-card--full h3 a:hover { color: var(--color-accent-light); }
.speaker-card--full .speaker-tagline { color: var(--color-text-muted); margin: 0 0 var(--space-sm); font-size: 0.95rem; }
.speaker-tagline-hero { color: var(--color-text-muted); font-size: 1.1rem; margin-top: var(--space-sm); }
.speaker-detail .speaker-bio { font-size: 1.05rem; line-height: 1.7; margin-bottom: var(--space-lg); }
.speaker-links { list-style: none; padding: 0; margin: var(--space-md) 0; display: flex; gap: var(--space-md); flex-wrap: wrap; }
.speaker-links li { margin: 0; }
.speaker-links a { color: var(--color-accent-light); }
.speaker-links a:hover { color: var(--color-accent); }
.speakers-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: var(--space-md); }
.speaker-tile { display: block; background: var(--color-bg-card); border: 1px solid var(--color-border); border-radius: 8px; padding: var(--space-md); color: var(--color-text); transition: border-color 0.2s, transform 0.2s; }
.speaker-tile:hover { border-color: var(--color-accent); transform: translateY(-2px); color: var(--color-text); }
.speaker-tile-name { font-weight: 600; font-size: 1.05rem; margin-bottom: var(--space-xs); }
.speaker-tile-tagline { color: var(--color-text-muted); font-size: 0.9rem; }
.sessions-grid, .speaker-sessions { display: flex; flex-direction: column; gap: var(--space-sm); margin-top: var(--space-md); }
.session-link-card { display: block; background: var(--color-bg-card); border: 1px solid var(--color-border); border-radius: 8px; padding: var(--space-md); color: var(--color-text); transition: border-color 0.2s; }
.session-link-card:hover { border-color: var(--color-accent); color: var(--color-text); }
.session-link-time { color: var(--color-text-muted); font-size: 0.85rem; margin-bottom: var(--space-xs); }
.session-link-title { font-weight: 600; }
.schedule-slot h4 a { color: var(--color-text); }
.schedule-slot h4 a:hover { color: var(--color-accent-light); }
.schedule-slot .speaker a { color: var(--color-text-muted); }
.schedule-slot .speaker a:hover { color: var(--color-accent-light); }

/* Speaker avatars */
.speaker-avatar { display: inline-block; border-radius: 50%; object-fit: cover; background: var(--color-bg-elevated); border: 1px solid var(--color-border); flex-shrink: 0; }
.speaker-avatar--small { width: 32px; height: 32px; font-size: 0.75rem; }
.speaker-avatar--medium { width: 56px; height: 56px; font-size: 1.1rem; }
.speaker-avatar--large { width: 96px; height: 96px; font-size: 1.8rem; }
.speaker-avatar--initials { display: inline-flex; align-items: center; justify-content: center; font-weight: 600; color: var(--color-text-muted); letter-spacing: 0.02em; }
.speaker-hero { display: flex; align-items: center; gap: var(--space-md); }
.speaker-hero h1 { margin: 0; }
.speaker-card-head { display: flex; align-items: center; gap: var(--space-sm); margin-bottom: var(--space-xs); }
.speaker-card-head h3 { margin: 0; }
.speaker-card-head p { margin: 0; }
.speaker-tile { display: flex; align-items: center; gap: var(--space-md); }
.speaker-tile-text { min-width: 0; }
.schedule-slot--plenary {
  grid-column: 2 / -1;
  text-align: center;
  background: var(--color-bg-elevated);
}
.schedule-slot--plenary .plenary-desc { color: var(--color-text-muted); font-size: 0.9rem; margin: var(--space-xs) 0 0; }
.schedule-slot--break {
  grid-column: 1 / -1;
  text-align: center;
  background: var(--color-bg);
  color: var(--color-text-muted);
  font-style: italic;
  padding: var(--space-sm) var(--space-md);
}

/* Sponsor Tiers */
.sponsor-tier { margin-bottom: var(--space-xl); }
.sponsor-tier h3 {
  text-align: center;
  margin-bottom: var(--space-lg);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
}
.sponsor-tier--gold h3 { color: #fbbf24; }
.sponsor-tier--silver h3 { color: #94a3b8; }
.sponsor-logos {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: var(--space-xl);
}
.sponsor-logos a {
  display: block;
  padding: var(--space-md);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: all 0.3s;
}
.sponsor-logos a:hover {
  border-color: var(--color-accent);
  box-shadow: 0 0 20px var(--color-accent-glow);
}
.sponsor-tier--community .sponsor-logos img,
.sponsor-tier--community-partner .sponsor-logos img,
.sponsor-tier--community-friend .sponsor-logos img,
.sponsor-tier--community-food-friend .sponsor-logos img,
.sponsor-tier--community-student-friend .sponsor-logos img { max-height: 100px; }
.sponsor-logos img {
  height: 100px;
  width: auto;
}
.sponsor-logos .sponsor-logo--light-bg {
  background: rgba(255, 255, 255, 0.80);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius);
}
.sponsor-cta { text-align: center; margin-top: var(--space-xl); }

/* New card layout (used when sponsors have descriptions) */
.sponsor-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
  align-items: stretch;
}
.sponsor-card {
  display: flex;
  flex-direction: column;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-md);
  transition: all 0.3s;
}
.sponsor-card:hover { border-color: var(--color-accent); box-shadow: 0 0 20px var(--color-accent-glow); }
.sponsor-logo-link {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 120px;
  margin-bottom: var(--space-md);
}
.sponsor-logo-link img { max-height: 100px; width: auto; }
.sponsor-logo-link.sponsor-logo--light-bg {
  background: rgba(255, 255, 255, 0.80);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius);
}
.sponsor-body { text-align: center; }
.sponsor-name { margin: 0 0 var(--space-sm); font-size: 1.1rem; }
.sponsor-name a { color: var(--color-text); }
.sponsor-name a:hover { color: var(--color-accent); }
.sponsor-description { color: var(--color-text-muted); font-size: 0.95rem; margin: 0; }

/* 2025 Archive */
.archive-speakers { display: grid; gap: var(--space-lg); }
.archive-speaker {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  scroll-margin-top: calc(var(--nav-height) + var(--space-md));
}
.archive-speaker-head { display: flex; gap: var(--space-md); align-items: center; margin-bottom: var(--space-md); }
.archive-speaker-avatar { width: 96px; height: 96px; border-radius: 50%; object-fit: cover; }
.archive-speaker-talk, .archive-speaker-bio { margin-top: var(--space-md); }
.archive-speaker-talk h4, .archive-speaker-bio h4 {
  color: var(--color-accent-light);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.85rem;
  margin-bottom: var(--space-sm);
}
.archive-agenda-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: var(--space-xl); }
.archive-agenda-grid h3 { color: var(--color-accent-light); margin-bottom: var(--space-md); }
.archive-agenda { display: flex; flex-direction: column; gap: var(--space-sm); }
.archive-agenda li {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: var(--space-md);
  padding: var(--space-sm);
  border-bottom: 1px solid var(--color-border);
}
.archive-agenda-time { font-family: var(--font-mono); color: var(--color-text-muted); }
.archive-agenda-info a { color: var(--color-accent-light); }

/* Topics */
.session-topics { margin-top: var(--space-xl); }
.session-topics h2 { margin-bottom: var(--space-md); }
.topic-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  padding: 0;
  list-style: none;
}
.topic-chips li a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 0.4rem 0.85rem;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  color: var(--color-text);
  font-size: 0.85rem;
  font-family: var(--font-mono);
  transition: all 0.2s;
}
.topic-chips li a:hover { border-color: var(--color-accent); color: var(--color-accent-light); }
.topic-chips--large li a { font-size: 1rem; padding: 0.6rem 1.2rem; }
.topic-count {
  background: var(--color-accent-glow);
  color: var(--color-accent-light);
  padding: 0.1rem 0.5rem;
  border-radius: 999px;
  font-size: 0.75em;
}
.topic-session-list { display: flex; flex-direction: column; gap: var(--space-md); padding: 0; list-style: none; }
.topic-session-list li a {
  display: block;
  padding: var(--space-md) var(--space-lg);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: var(--color-text);
  transition: all 0.2s;
}
.topic-session-list li a:hover { border-color: var(--color-accent); }
.topic-session-meta { color: var(--color-text-muted); font-family: var(--font-mono); font-size: 0.9rem; margin: var(--space-xs) 0; }
.topic-session-excerpt { color: var(--color-text-muted); font-size: 0.95rem; margin: var(--space-sm) 0 0; }

/* FAQ Accordion */
.faq-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: center;
  max-width: 800px;
  margin: 0 auto var(--space-xl);
}
.faq-filter {
  padding: var(--space-xs) var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: var(--color-bg-card);
  color: var(--color-text-muted);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.faq-filter:hover { background: var(--color-bg-elevated); color: var(--color-text); }
.faq-filter.active {
  background: var(--color-accent-light);
  border-color: var(--color-accent-light);
  color: var(--color-bg);
}
.faq-group-title {
  max-width: 800px;
  margin: var(--space-xl) auto var(--space-md);
  font-family: var(--font-heading);
  font-size: 1.3rem;
  color: var(--color-text);
}
.faq-group:first-child .faq-group-title { margin-top: 0; }
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  margin-bottom: var(--space-md);
  overflow: hidden;
}
.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md) var(--space-lg);
  background: var(--color-bg-card);
  border: none;
  color: var(--color-text);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-body);
  transition: background 0.2s;
}
.faq-question:hover { background: var(--color-bg-elevated); }
.faq-question::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--color-accent-light);
  transition: transform 0.3s;
}
.faq-item.open .faq-question::after { content: '−'; }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.faq-answer-inner {
  padding: var(--space-md) var(--space-lg) var(--space-lg);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* Ticket Page */
.ticket-page { text-align: center; padding: var(--space-2xl) 0; }
.ticket-types {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
  margin: var(--space-xl) 0;
}
.ticket-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-lg);
  text-align: center;
  transition: all 0.3s;
  display: flex;
  flex-direction: column;
}
.ticket-card .btn {
  margin-top: auto;
}
.ticket-card:hover { border-color: var(--color-accent); }
.ticket-card--featured {
  border-color: var(--color-accent);
  box-shadow: 0 0 30px var(--color-accent-glow);
}
.ticket-card h3 { margin-bottom: var(--space-md); }
.ticket-card .price {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-accent-light);
  margin-bottom: var(--space-md);
}
.ticket-card ul { margin-bottom: var(--space-lg); color: var(--color-text-muted); }
.ticket-card li { padding: var(--space-xs) 0; }
.ticket-card .perk-highlight {
  color: var(--color-accent-light);
  font-weight: 600;
  text-shadow: 0 0 10px var(--color-accent-glow), 0 0 30px rgba(74, 184, 210, 0.2);
  padding: var(--space-sm) 0;
  position: relative;
}
.ticket-card .perk-highlight::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--color-accent-glow);
  border-radius: var(--radius);
  z-index: -1;
}

/* Ticket Stats Counter */
.ticket-stats {
  text-align: center;
  margin-bottom: var(--space-xl);
  padding: var(--space-lg);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}
.ticket-stats-counter {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1;
}
.ticket-stats-number {
  color: var(--color-accent-light);
  transition: transform 0.3s, color 0.3s;
  display: inline-block;
}
.ticket-stats-separator { color: var(--color-text-muted); margin: 0 0.25em; }
.ticket-stats-total { color: var(--color-text-muted); }
.ticket-stats-label {
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.85rem;
  margin-top: var(--space-sm);
}
.ticket-stats-bar {
  margin-top: var(--space-md);
  height: 6px;
  background: var(--color-bg-elevated);
  border-radius: 3px;
  overflow: hidden;
  max-width: 400px;
  margin-left: auto;
  margin-right: auto;
}
.ticket-stats-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light));
  border-radius: 3px;
  transition: width 0.6s ease;
  /* Start at 0 width, JS will animate to target on load */
  width: 0% !important;
}
.ticket-stats-bar-fill--animated {
  width: var(--target-width) !important;
  transition: width 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.ticket-stats-basket {
  margin-top: var(--space-sm);
  color: var(--color-text-muted);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
}
.ticket-stats-basket-count {
  color: var(--color-accent-light);
  font-weight: 600;
  margin-right: 0.25em;
}
.ticket-stats-basket--empty {
  display: none;
}

/* Ticket Remaining */
.ticket-remaining {
  font-size: 0.85rem;
  color: var(--color-warning);
  margin-bottom: var(--space-md);
  font-weight: 500;
}
.ticket-remaining-count {
  font-family: var(--font-mono);
  font-weight: 700;
}

/* Sold Out Badge */
.ticket-badge {
  display: inline-block;
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-md);
}
.ticket-badge--sold-out {
  background: rgba(239, 68, 68, 0.15);
  color: #ef4444;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

/* Hero Ticket Counter */
.hero-ticket-counter {
  margin-bottom: var(--space-lg);
  font-size: 1rem;
  color: var(--color-text-muted);
}
.hero-ticket-badge {
  margin-bottom: 0;
  margin-left: var(--space-sm);
  vertical-align: middle;
}
.hero-ticket-badge[hidden] { display: none; }
.hero-ticket-number {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-accent-light);
  transition: transform 0.3s;
  display: inline-block;
}

/* Ticket Toast Notification */
.ticket-toast {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  z-index: 200;
  pointer-events: none;
}
.ticket-toast-msg {
  background: linear-gradient(135deg, var(--color-bg-card), var(--color-bg-elevated));
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-lg);
  padding: var(--space-md) var(--space-lg);
  color: var(--color-text);
  font-size: 0.95rem;
  font-weight: 500;
  box-shadow: 0 0 40px var(--color-accent-glow), 0 4px 20px rgba(0,0,0,0.3);
  animation: toast-in 0.5s cubic-bezier(0.34, 1.56, 0.64, 1), toast-out 0.4s ease 3.5s forwards;
  margin-top: var(--space-sm);
  position: relative;
  overflow: hidden;
}
.ticket-toast-msg::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(74, 184, 210, 0.1), transparent);
  animation: toast-shimmer 1.5s ease 0.5s;
}
.ticket-toast-emoji {
  display: inline-block;
  animation: emoji-bounce 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
  font-size: 1.1em;
}
.ticket-toast-float {
  position: absolute;
  font-size: 1.2rem;
  animation: float-up 1.5s ease forwards;
  pointer-events: none;
}

/* Ticket card pulse animation on live update */
.ticket-card--pulse {
  animation: ticket-pulse 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Confetti particles */
.ticket-confetti {
  position: fixed;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  pointer-events: none;
  z-index: 300;
  animation: confetti-burst 1s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

@keyframes confetti-burst {
  0% { transform: translate(0, 0) rotate(0deg); opacity: 1; }
  100% { transform: translate(var(--tx), var(--ty)) rotate(var(--r)); opacity: 0; }
}

@keyframes ticket-pulse {
  0% { box-shadow: 0 0 0 0 rgba(74, 184, 210, 0.4); transform: scale(1); }
  40% { box-shadow: 0 0 40px 15px var(--color-accent-glow); border-color: var(--color-accent-light); transform: scale(1.02); }
  100% { box-shadow: 0 0 0 0 var(--color-accent-glow); transform: scale(1); }
}

/* Counter bump animation */
.ticket-stats-number--bump {
  animation: counter-bump 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}
@keyframes counter-bump {
  0% { transform: scale(1); }
  40% { transform: scale(1.4); color: #fff; text-shadow: 0 0 20px var(--color-accent-glow); }
  100% { transform: scale(1); }
}

@keyframes toast-in {
  from { opacity: 0; transform: translateX(120px) scale(0.8); }
  to { opacity: 1; transform: translateX(0) scale(1); }
}
@keyframes toast-out {
  from { opacity: 1; transform: translateX(0) scale(1); }
  to { opacity: 0; transform: translateX(80px) scale(0.9); }
}
@keyframes toast-shimmer {
  from { left: -100%; }
  to { left: 100%; }
}
@keyframes emoji-bounce {
  0% { transform: scale(0) rotate(-20deg); }
  60% { transform: scale(1.3) rotate(10deg); }
  100% { transform: scale(1) rotate(0); }
}
@keyframes float-up {
  0% { transform: translateY(0) scale(1); opacity: 1; }
  100% { transform: translateY(-80px) scale(0.5); opacity: 0; }
}

/* CFP Page */
.cfp-page { max-width: 800px; margin: 0 auto; }
.cfp-page .deadline {
  display: inline-block;
  background: var(--color-accent-glow);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius);
  padding: var(--space-sm) var(--space-md);
  font-weight: 600;
  color: var(--color-accent-light);
  margin: var(--space-md) 0 var(--space-lg);
}
.cfp-page p {
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: var(--space-md);
}
.cfp-page h2 {
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
}
.cfp-page ul {
  list-style: none;
  margin-bottom: var(--space-lg);
}
.cfp-page li {
  color: var(--color-text-muted);
  line-height: 1.7;
  padding: var(--space-xs) 0;
  padding-left: var(--space-lg);
  position: relative;
}
.cfp-page li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--color-accent);
}
.cfp-page li strong {
  color: var(--color-text);
}
.cfp-page .cfp-closed {
  background: rgba(245, 158, 11, 0.1);
  border-color: #f59e0b;
  color: #fbbf24;
}
.cfp-page .cfp-schedule {
  background: rgba(34, 197, 94, 0.1);
  border-color: #22c55e;
  color: #4ade80;
}
.cfp-review-note {
  color: var(--color-text-muted);
  font-style: italic;
  margin-bottom: var(--space-lg);
}

/* Page Content */
.page-header {
  padding-top: calc(var(--nav-height) + var(--space-xl));
  padding-bottom: var(--space-lg);
  text-align: center;
  background: radial-gradient(ellipse at 50% 0%, var(--color-accent-glow) 0%, transparent 60%);
}
.page-header p {
  color: var(--color-text-muted);
  margin-top: var(--space-sm);
  font-size: 1.1rem;
}
.page-content {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-xl) var(--space-lg);
}
.page-content p { margin-bottom: var(--space-md); color: var(--color-text-muted); line-height: 1.8; }
.page-content h2 { margin-top: var(--space-xl); margin-bottom: var(--space-md); }
.page-content h3 { margin-top: var(--space-lg); margin-bottom: var(--space-sm); color: var(--color-text); }
.page-content ul, .page-content ol { margin-bottom: var(--space-md); padding-left: var(--space-lg); color: var(--color-text-muted); }
.page-content li { margin-bottom: var(--space-sm); line-height: 1.7; }
.page-content ul { list-style: disc; }
.page-content ol { list-style: decimal; }
.page-content img {
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  margin: var(--space-lg) 0 var(--space-sm);
}
.page-content em {
  color: var(--color-text-muted);
  font-size: 0.85rem;
}
.page-content blockquote {
  border-left: 3px solid var(--color-accent);
  padding: var(--space-sm) var(--space-lg);
  margin: var(--space-lg) 0;
  background: var(--color-bg-elevated);
  border-radius: 0 var(--radius) var(--radius) 0;
}
.page-content blockquote p { color: var(--color-text); margin-bottom: 0; }
.page-content hr {
  border: none;
  height: 1px;
  background: var(--color-border);
  margin: var(--space-xl) 0;
}
.page-content strong { color: var(--color-text); }
.page-content table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-md) 0 var(--space-lg);
  font-size: 0.9rem;
}
.page-content th {
  text-align: left;
  padding: var(--space-sm) var(--space-md);
  background: var(--color-bg-elevated);
  border-bottom: 2px solid var(--color-accent);
  color: var(--color-text);
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.page-content td {
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-muted);
}
.page-content tr:hover td {
  background: var(--color-bg-elevated);
}
.page-content code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--color-bg-elevated);
  padding: 0.15em 0.4em;
  border-radius: 3px;
  color: var(--color-accent-light);
}

/* Venue */
.venue-map {
  margin: var(--space-lg) 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
}
.venue-map iframe { width: 100%; height: 400px; border: 0; }
.venue-details {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-lg);
}
.venue-detail {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-lg);
}
.venue-detail h3 { margin-bottom: var(--space-sm); font-size: 1rem; }
.venue-detail p { color: var(--color-text-muted); font-size: 0.95rem; }

/* Footer */
.site-footer {
  background: var(--color-bg-elevated);
  border-top: 1px solid var(--color-border);
  padding: var(--space-xl) 0 var(--space-lg);
  margin-top: var(--space-2xl);
  position: relative;
}
.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 120px;
  background: radial-gradient(ellipse at 50% 0%, rgba(74, 184, 210, 0.06) 0%, transparent 70%);
  pointer-events: none;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}
.footer-brand p { color: var(--color-text-muted); margin-top: var(--space-sm); font-size: 0.9rem; }
.footer-links h4, .footer-social h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}
.footer-links li, .footer-social li { margin-bottom: var(--space-sm); }
.footer-links a, .footer-social a { color: var(--color-text-muted); font-size: 0.9rem; }
.footer-links a:hover, .footer-social a:hover { color: var(--color-text); }
.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-lg);
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

/* Video Recap */
.video-recap-section { background: var(--color-bg); }
.video-wrapper {
  max-width: 900px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 0 0 1px var(--color-border), 0 0 48px rgba(74, 184, 210, 0.1);
}
.recap-video {
  display: block;
  width: 100%;
  height: auto;
  background: #000;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--color-bg-elevated);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-md);
  }
  .nav-links.open { display: flex; }
  .nav-cta { margin-left: 0; margin-top: var(--space-sm); }
  .lang-switch { margin-left: auto; }

  .hero h1 { font-size: 2.5rem; }
  .countdown { gap: var(--space-md); }

  /* Mobile: stack agenda. Hide the "Time | Track 1 | Track 2" header.
     Each row becomes: time as a section heading, then both tracks full-width
     with an inline "Track N" label on each slot. */
  .schedule-header { display: none; }
  .schedule-row { display: block; margin-bottom: var(--space-md); }
  .schedule-time {
    background: transparent;
    color: var(--color-accent-light);
    padding: 0 0 var(--space-xs);
    justify-content: flex-start;
    font-size: 1rem;
    font-weight: 700;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: var(--space-sm);
  }
  .schedule-slot { border-left: none; border-radius: 8px; margin-bottom: var(--space-sm); border: 1px solid var(--color-border); }
  .schedule-slot-track {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-accent-light);
    background: var(--color-bg-elevated);
    padding: 2px 8px;
    border-radius: 999px;
    margin-bottom: var(--space-xs);
  }
  .schedule-slot--plenary, .schedule-slot--break { border-radius: 8px; }

  .footer-grid { grid-template-columns: 1fr; gap: var(--space-lg); }
}

@media (max-width: 480px) {
  .hero-cta { flex-direction: column; align-items: center; }
}