:root {
  --color-primary: #a1472f;
  --color-primary-deep: #7e3422;
  --color-primary-soft: #c47a68;
  --color-peach: #d8c8c1;
  --color-peach-deep: #ccb6b0;
  --color-cream: #f0ede2;
  --color-cream-dark: #e4dbd1;
  --color-ink: #2c2420;
  --color-ink-muted: #5c524c;
  --color-paper: #faf8f3;
  --color-white: #ffffff;
  --color-line: rgba(161, 71, 47, 0.18);
  --font-display: "Libre Baskerville", "Palatino Linotype", Palatino, serif;
  --font-body: "Source Sans 3", "Segoe UI", sans-serif;
  --shadow-soft: 0 12px 40px rgba(44, 36, 32, 0.08);
  --radius: 4px;
  --header-h: 4.25rem;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 1rem);
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--color-ink);
  background:
    radial-gradient(circle at 12% 18%, rgba(212, 168, 154, 0.28), transparent 42%),
    radial-gradient(circle at 88% 8%, rgba(161, 71, 47, 0.08), transparent 36%),
    linear-gradient(180deg, var(--color-cream) 0%, var(--color-paper) 42%, var(--color-cream) 100%);
  min-height: 100vh;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-primary);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--color-primary-deep);
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-primary);
  color: var(--color-white);
  padding: 0.75rem 1rem;
  z-index: 1000;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  backdrop-filter: blur(12px);
  background: rgba(240, 237, 226, 0.88);
  border-bottom: 1px solid var(--color-line);
  transition: box-shadow 0.35s var(--ease);
}

.site-header.is-scrolled {
  box-shadow: 0 8px 24px rgba(44, 36, 32, 0.08);
}

.header-inner {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: inherit;
}

.brand img {
  height: 2.4rem;
  width: auto;
}

.nav-toggle {
  display: none;
  border: 1px solid var(--color-line);
  background: var(--color-paper);
  color: var(--color-ink);
  padding: 0.45rem 0.7rem;
  font: inherit;
  cursor: pointer;
  border-radius: var(--radius);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.35rem 1rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.site-nav a {
  text-decoration: none;
  color: var(--color-ink-muted);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.site-nav a:hover,
.site-nav a[aria-current="true"] {
  color: var(--color-primary);
}

.lang-switch {
  display: inline-flex;
  border: 1px solid var(--color-line);
  border-radius: 999px;
  overflow: hidden;
  margin-left: 0.35rem;
}

.lang-switch button {
  border: 0;
  background: transparent;
  color: var(--color-ink-muted);
  font: inherit;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.35rem 0.65rem;
  cursor: pointer;
}

.lang-switch button[aria-pressed="true"] {
  background: var(--color-primary);
  color: var(--color-white);
}

.nav-external {
  color: var(--color-primary) !important;
}

main {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2.5rem;
  align-items: center;
  padding: 3.5rem 0 3rem;
  min-height: calc(100vh - var(--header-h) - 2rem);
}

.hero-copy {
  animation: rise-in 0.9s var(--ease) both;
}

.kicker {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 1rem;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 6vw, 4.4rem);
  line-height: 1.05;
  margin: 0 0 1rem;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.4vw, 1.55rem);
  line-height: 1.35;
  color: var(--color-ink);
  white-space: pre-line;
  margin: 0 0 1.25rem;
  max-width: 28ch;
}

.hero-venues {
  color: var(--color-ink-muted);
  margin: 0 0 1.75rem;
  max-width: 42ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  border-radius: 999px;
  padding: 0.75rem 1.25rem;
  font: inherit;
  font-weight: 700;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.25s var(--ease), background 0.25s var(--ease), color 0.25s var(--ease);
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn-primary:hover {
  background: var(--color-primary-deep);
  color: var(--color-white);
}

.btn-ghost {
  background: transparent;
  border-color: var(--color-primary-soft);
  color: var(--color-primary);
}

.hero-visual {
  position: relative;
  animation: rise-in 1s var(--ease) 0.12s both;
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: 8% -6% -8% 12%;
  background:
    radial-gradient(circle at 30% 40%, var(--color-peach) 0 3px, transparent 4px),
    radial-gradient(circle at 60% 25%, var(--color-primary-soft) 0 2px, transparent 3px),
    radial-gradient(circle at 75% 65%, var(--color-ink) 0 1.5px, transparent 2.5px),
    linear-gradient(135deg, transparent 40%, rgba(161, 71, 47, 0.08) 100%);
  z-index: 0;
  opacity: 0.7;
}

.hero-visual img {
  position: relative;
  z-index: 1;
  width: min(100%, 420px);
  margin-left: auto;
  border-radius: 2px;
  box-shadow: var(--shadow-soft);
}

.section {
  padding: 4rem 0;
  border-top: 1px solid var(--color-line);
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.section.is-visible {
  opacity: 1;
  transform: none;
}

.section-label {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary-soft);
  margin: 0 0 0.5rem;
}

.section h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  line-height: 1.15;
  margin: 0 0 1.25rem;
  color: var(--color-ink);
}

.section p {
  margin: 0 0 1rem;
  max-width: 68ch;
  color: var(--color-ink-muted);
}

.section p:last-child {
  margin-bottom: 0;
}

.lead {
  font-size: 1.12rem;
  color: var(--color-ink) !important;
}

.tracks {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin: 1.75rem 0;
}

.track {
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--color-line);
  border-left: 3px solid var(--color-primary);
  padding: 1.1rem 1.15rem;
}

.track h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  margin: 0 0 0.45rem;
  color: var(--color-primary);
}

.track p {
  margin: 0;
  font-size: 0.95rem;
}

.callout {
  margin-top: 1.5rem;
  padding: 1rem 1.2rem;
  background: rgba(161, 71, 47, 0.08);
  border: 1px solid var(--color-line);
}

.callout strong {
  color: var(--color-primary-deep);
}

.timeline {
  display: grid;
  gap: 1rem;
  margin-top: 1.5rem;
}

.timeline-item {
  display: grid;
  grid-template-columns: 0.9rem 1fr;
  gap: 1rem;
}

.timeline-dot {
  width: 0.9rem;
  height: 0.9rem;
  margin-top: 0.35rem;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(161, 71, 47, 0.15);
}

.timeline-item h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin: 0 0 0.35rem;
}

.timeline-item p {
  margin: 0;
}

.options {
  display: grid;
  gap: 0.6rem;
  margin-top: 1.25rem;
  padding-left: 0;
  list-style: none;
}

.options li {
  padding: 0.7rem 0.9rem;
  background: rgba(255, 255, 255, 0.5);
  border: 1px solid var(--color-line);
}

.venue-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin: 1.5rem 0;
}

.venue-card {
  padding: 1.25rem;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--color-line);
}

.venue-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin: 0 0 0.4rem;
  color: var(--color-primary);
}

.travel-block {
  margin-top: 1.5rem;
}

.travel-block h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  margin: 0 0 0.75rem;
}

.travel-block h4 {
  margin: 1rem 0 0.25rem;
  font-size: 1rem;
  color: var(--color-primary-deep);
}

.table-wrap {
  overflow-x: auto;
  margin: 1rem 0 2rem;
  border: 1px solid var(--color-line);
  background: rgba(255, 255, 255, 0.6);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

th,
td {
  text-align: left;
  padding: 0.75rem 0.9rem;
  border-bottom: 1px solid var(--color-line);
  vertical-align: top;
}

th {
  background: rgba(161, 71, 47, 0.08);
  color: var(--color-primary-deep);
  font-weight: 700;
}

tr:last-child td {
  border-bottom: 0;
}

.committee-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin-top: 1.25rem;
}

.committee-card {
  padding: 1.15rem;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--color-line);
}

.committee-card h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  margin: 0 0 0.5rem;
  color: var(--color-primary);
}

.committee-card ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--color-ink-muted);
}

.contacts-box {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  margin-top: 1.25rem;
}

.site-footer {
  margin-top: 2rem;
  padding: 2.5rem 0 6rem;
  border-top: 1px solid var(--color-line);
  background: rgba(161, 71, 47, 0.06);
}

.footer-inner {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.site-footer p {
  margin: 0 0 0.5rem;
  color: var(--color-ink-muted);
  max-width: 60ch;
}

.site-footer .tagline {
  font-family: var(--font-display);
  color: var(--color-ink);
}

/* Chatbot */
.chat-launcher {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 200;
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 50%;
  border: 0;
  background: var(--color-primary);
  color: var(--color-white);
  box-shadow: 0 10px 30px rgba(161, 71, 47, 0.35);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: transform 0.25s var(--ease), background 0.25s var(--ease);
}

.chat-launcher:hover {
  transform: scale(1.05);
  background: var(--color-primary-deep);
}

.chat-launcher svg {
  width: 1.45rem;
  height: 1.45rem;
}

.chat-panel {
  position: fixed;
  right: 1.25rem;
  bottom: 5.2rem;
  z-index: 200;
  width: min(380px, calc(100vw - 1.5rem));
  height: min(540px, calc(100vh - 7rem));
  background: var(--color-paper);
  border: 1px solid var(--color-line);
  box-shadow: var(--shadow-soft);
  display: flex;
  flex-direction: column;
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px) scale(0.98);
  transition: opacity 0.28s var(--ease), transform 0.28s var(--ease);
}

.chat-panel.is-open {
  opacity: 1;
  pointer-events: auto;
  transform: none;
}

.chat-header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
  padding: 0.9rem 1rem;
  background: var(--color-primary);
  color: var(--color-white);
}

.chat-header h2 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  margin: 0 0 0.15rem;
}

.chat-header p {
  margin: 0;
  font-size: 0.82rem;
  opacity: 0.9;
}

.chat-close {
  border: 0;
  background: transparent;
  color: inherit;
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  background:
    radial-gradient(circle at 90% 10%, rgba(216, 200, 193, 0.45), transparent 35%),
    var(--color-cream);
}

.bubble {
  max-width: 92%;
  padding: 0.7rem 0.85rem;
  border-radius: 12px;
  font-size: 0.92rem;
  line-height: 1.45;
  white-space: pre-wrap;
}

.bubble.bot {
  align-self: flex-start;
  background: var(--color-white);
  border: 1px solid var(--color-line);
  color: var(--color-ink);
}

.bubble.user {
  align-self: flex-end;
  background: var(--color-primary);
  color: var(--color-white);
}

.chat-suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  padding: 0 1rem 0.75rem;
  background: var(--color-cream);
}

.chat-suggestions button {
  border: 1px solid var(--color-line);
  background: var(--color-white);
  color: var(--color-ink-muted);
  font: inherit;
  font-size: 0.78rem;
  padding: 0.35rem 0.6rem;
  border-radius: 999px;
  cursor: pointer;
}

.chat-suggestions button:hover {
  border-color: var(--color-primary-soft);
  color: var(--color-primary);
}

.chat-form {
  display: flex;
  gap: 0.5rem;
  padding: 0.75rem;
  border-top: 1px solid var(--color-line);
  background: var(--color-paper);
}

.chat-form input {
  flex: 1;
  border: 1px solid var(--color-line);
  background: var(--color-white);
  color: var(--color-ink);
  font: inherit;
  padding: 0.65rem 0.75rem;
  border-radius: var(--radius);
}

.chat-form button {
  border: 0;
  background: var(--color-primary);
  color: var(--color-white);
  font: inherit;
  font-weight: 700;
  padding: 0.65rem 0.9rem;
  border-radius: var(--radius);
  cursor: pointer;
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 2.5rem;
  }

  .hero-visual img {
    margin: 0 auto;
  }

  .venue-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(250, 248, 243, 0.98);
    border-bottom: 1px solid var(--color-line);
    padding: 0.5rem 1rem 1rem;
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a,
  .lang-switch {
    padding: 0.65rem 0.25rem;
  }

  .lang-switch {
    margin: 0.35rem 0 0;
    width: fit-content;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .section {
    opacity: 1;
    transform: none;
  }
}