/* ===================================================================
   Joint IGCC-ICAP 2027 — stylesheet
   =================================================================== */

:root {
  --brown: #80350E;
  --brown-dark: #5C260A;
  --brown-tint: #F7F0EC;
  --green: #11711A;
  --green-dark: #0D5814;
  --green-tint: #EEF6EE;
  --ink: #2B2B2B;
  --ink-soft: #5B5B5B;
  --line: #E6DDD6;
  --paper: #FFFFFF;
  --paper-alt: #FBF8F6;
  --max-width: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Source Sans 3", "Segoe UI", Arial, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: "Source Serif 4", Georgia, "Times New Roman", serif;
  color: var(--brown);
  line-height: 1.25;
  margin: 0 0 0.6em;
  font-weight: 600;
}

h1 { font-size: 2.1rem; }
h2 { font-size: 1.55rem; }
h3 { font-size: 1.2rem; color: var(--ink); }

p { margin: 0 0 1.1em; }

a { color: var(--green-dark); text-decoration: none; }
a:hover { text-decoration: underline; }

ul, ol { padding-left: 1.3em; }
li { margin-bottom: 0.5em; }

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

/* ---------- header ---------- */

.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--paper);
  position: sticky;
  top: 0;
  z-index: 50;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-top: 14px;
  padding-bottom: 14px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  min-width: 0;
  flex-shrink: 1;
}

.brand img {
  height: 46px;
  width: auto;
  display: block;
}

.brand-text {
  font-family: "Source Serif 4", Georgia, serif;
  font-size: 0.95rem;
  line-height: 1.2;
  color: var(--ink);
  min-width: 0;
  overflow-wrap: break-word;
}

.brand-text strong {
  display: block;
  color: var(--brown);
  font-size: 1rem;
}

nav.main-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 22px;
}

nav.main-nav a {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
}

nav.main-nav a:hover {
  color: var(--green-dark);
  text-decoration: none;
}

nav.main-nav a.active {
  color: var(--brown);
  border-bottom-color: var(--brown);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 38px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--paper);
  cursor: pointer;
  flex-shrink: 0;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--brown);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- hero ---------- */

.hero {
  background: linear-gradient(180deg, var(--brown-tint) 0%, var(--paper) 100%);
  border-bottom: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}

.hero .container {
  padding-top: 56px;
  padding-bottom: 48px;
  position: relative;
  z-index: 1;
}

.hero-watermark {
  position: absolute;
  right: 4%;
  top: 28px;
  width: 260px;
  max-width: 32vw;
  opacity: 0.10;
  pointer-events: none;
  z-index: 0;
}

.eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--green-dark);
  background: var(--green-tint);
  border: 1px solid #d3e8d5;
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 18px;
}

.hero h1 {
  max-width: 780px;
  margin-bottom: 0.4em;
}

.hero .meta {
  font-size: 1.05rem;
  color: var(--ink-soft);
  margin-bottom: 1.6em;
}

.hero .meta strong { color: var(--ink); }

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.btn {
  display: inline-block;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  padding: 12px 24px;
  border-radius: 4px;
  text-decoration: none;
  border: 1px solid transparent;
}

.btn:hover { text-decoration: none; }

.btn-primary {
  background: var(--brown);
  color: #ffffff !important;
}
.btn-primary:hover { background: var(--brown-dark); }

.btn-secondary {
  background: transparent;
  color: var(--brown) !important;
  border-color: var(--brown);
}
.btn-secondary:hover { background: var(--brown-tint); }

/* ---------- page header (non-home pages) ---------- */

.page-header {
  background: var(--paper-alt);
  border-bottom: 1px solid var(--line);
}

.page-header .container {
  padding-top: 40px;
  padding-bottom: 32px;
}

.page-header .meta {
  color: var(--ink-soft);
}

/* ---------- content sections ---------- */

main { padding: 48px 0 64px; }

.section { margin-bottom: 44px; }

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

.facts-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin: 40px 0 8px;
}

.fact {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 18px 20px;
  background: var(--paper-alt);
}

.fact .label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--green-dark);
  margin-bottom: 6px;
}

.fact .value {
  font-size: 1rem;
  color: var(--ink);
}

.callout {
  border-left: 3px solid var(--green);
  background: var(--green-tint);
  padding: 16px 20px;
  border-radius: 0 6px 6px 0;
  margin: 1.4em 0;
}

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

.notice {
  border-left: 3px solid var(--brown);
  background: var(--brown-tint);
  padding: 16px 20px;
  border-radius: 0 6px 6px 0;
  margin: 1.4em 0;
}

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

/* ---------- tables ---------- */

table.pricing {
  width: 100%;
  border-collapse: collapse;
  margin: 1.4em 0;
  font-size: 0.95rem;
}

table.pricing caption {
  text-align: left;
  font-size: 0.78rem;
  color: var(--ink-soft);
  margin-bottom: 8px;
}

table.pricing th, table.pricing td {
  border: 1px solid var(--line);
  padding: 12px 14px;
  text-align: left;
}

table.pricing thead th {
  background: var(--brown-tint);
  color: var(--brown);
  font-family: "Source Serif 4", Georgia, serif;
  font-weight: 600;
}

table.pricing tbody tr:nth-child(even) { background: var(--paper-alt); }

table.pricing td.price { font-weight: 700; color: var(--ink); white-space: nowrap; }

/* ---------- definition-style list (abstracts guidelines) ---------- */

.rules dt {
  font-weight: 700;
  color: var(--brown);
  margin-top: 1.1em;
}
.rules dd { margin: 0.2em 0 0; }

/* ---------- scientific committee ---------- */

.member-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.member-card {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 16px 18px;
  background: var(--paper-alt);
}

.member-info { min-width: 0; }

.member-card h3 {
  margin-bottom: 0.2em;
  color: var(--brown);
  font-size: 1.05rem;
}

.member-affiliation {
  font-size: 0.85rem;
  color: var(--ink-soft);
  margin-bottom: 0.4em;
}

.member-expertise {
  font-size: 0.88rem;
  color: var(--ink);
}

.member-photo {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  border: 1px solid var(--line);
  background: var(--paper);
}

.president-intro {
  display: flex;
  align-items: center;
  gap: 18px;
}

.member-photo-lg {
  width: 84px;
  height: 84px;
}

.president-intro p:first-child { margin-top: 0; }

@media (max-width: 640px) {
  .member-grid { grid-template-columns: 1fr; }
  .president-intro { align-items: flex-start; }
}

/* ---------- placeholder / coming soon blocks ---------- */

.coming-soon {
  border: 1px dashed var(--line);
  border-radius: 8px;
  padding: 36px 30px;
  text-align: center;
  background: var(--paper-alt);
}

.coming-soon h3 {
  color: var(--brown);
  margin-bottom: 0.4em;
}

.coming-soon p { color: var(--ink-soft); max-width: 520px; margin: 0 auto; }

/* ---------- widget container (Accommodation / Revolugo) ---------- */

.widget-frame {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 24px;
  background: var(--paper-alt);
  min-height: 160px;
}

/* ---------- contact ---------- */

.contact-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: start;
}

.contact-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 22px 24px;
  background: var(--paper-alt);
}

.contact-card h3 { margin-bottom: 0.5em; }
.contact-card .role { color: var(--ink-soft); font-size: 0.9rem; margin-bottom: 0.8em; }

form.mc-form-placeholder input,
form.mc-form-placeholder textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 4px;
  font-family: inherit;
  font-size: 0.95rem;
  margin-bottom: 14px;
}

form.mc-form-placeholder label {
  display: block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 6px;
}

/* ---------- Mailchimp embedded form overrides ----------
   Extra-specific selectors (".mc-form-wrap #mc_embed_signup ...") so these
   rules win over Mailchimp's own classic-*.css, regardless of load order. */

.mc-form-wrap #mc_embed_signup {
  background: transparent !important;
  width: 100% !important;
  max-width: 480px;
  font-family: "Source Sans 3", "Segoe UI", Arial, sans-serif !important;
  font-size: 0.95rem !important;
}

.mc-form-wrap #mc_embed_signup h2 {
  font-family: "Source Serif 4", Georgia, serif !important;
  color: var(--brown) !important;
  font-size: 1.2rem !important;
  margin: 0 0 0.5em !important;
}

.mc-form-wrap #mc_embed_signup .indicates-required {
  font-size: 0.78rem;
  color: var(--ink-soft);
  margin-bottom: 14px;
}

.mc-form-wrap #mc_embed_signup .asterisk {
  color: var(--brown);
}

.mc-form-wrap #mc_embed_signup .mc-field-group {
  margin-bottom: 14px;
  width: 100% !important;
}

.mc-form-wrap #mc_embed_signup label {
  display: block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 6px;
}

.mc-form-wrap #mc_embed_signup input[type="email"],
.mc-form-wrap #mc_embed_signup input[type="text"],
.mc-form-wrap #mc_embed_signup select {
  width: 100% !important;
  padding: 10px 12px !important;
  border: 1px solid var(--line) !important;
  border-radius: 4px !important;
  font-family: inherit !important;
  font-size: 0.95rem !important;
  background: #fff;
}

.mc-form-wrap #mc_embed_signup .mc-address-fields-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.mc-form-wrap #mc_embed_signup .mc-address-fields-group .mc-field-group {
  flex: 1 1 140px;
}

.mc-form-wrap #mc_embed_signup #mce-responses .response {
  font-size: 0.85rem;
  margin-bottom: 10px;
}

.mc-form-wrap #mc_embed_signup input.button {
  display: inline-block;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  padding: 12px 24px !important;
  border-radius: 4px !important;
  border: none !important;
  background: var(--brown) !important;
  color: #ffffff !important;
  cursor: pointer;
  height: auto !important;
  width: auto !important;
}

.mc-form-wrap #mc_embed_signup input.button:hover {
  background: var(--brown-dark) !important;
}

/* ---------- footer ---------- */

footer.site-footer {
  border-top: 1px solid var(--line);
  background: var(--paper-alt);
  color: var(--ink-soft);
  font-size: 0.85rem;
}

footer.site-footer .container {
  padding: 28px 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

footer.site-footer a { color: var(--ink-soft); }
footer.site-footer strong { color: var(--ink); }

/* ---------- responsive ---------- */

@media (max-width: 760px) {
  .facts-strip { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .site-header .container { flex-wrap: nowrap; align-items: center; position: relative; }
  .nav-toggle { display: flex; }
  .brand img { height: 34px; }
  .brand-sub { display: none; }
  nav.main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 10px 20px rgba(43, 43, 43, 0.08);
    padding: 4px 24px 12px;
  }
  nav.main-nav.open { display: flex; }
  nav.main-nav a {
    width: 100%;
    padding: 12px 0;
    border-bottom: 1px solid var(--line);
  }
  nav.main-nav a:last-child { border-bottom: none; }
  nav.main-nav a.active { border-bottom-color: var(--brown); }
  .hero .container { padding-top: 40px; padding-bottom: 36px; }
  h1 { font-size: 1.6rem; }
}

/* ---------- programme schedule ---------- */

.day-tabs {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 8px 0 32px;
  padding: 12px 0;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.day-tab {
  display: inline-block;
  font-family: inherit;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--brown);
  border: 1px solid var(--line);
  background: var(--paper-alt);
  padding: 9px 16px;
  border-radius: 999px;
  cursor: pointer;
}

.day-tab:hover { background: var(--brown-tint); }

.day-tab.active {
  background: var(--brown);
  border-color: var(--brown);
  color: #ffffff;
}

.day-block { margin-bottom: 0; }

.day-venue {
  color: var(--ink-soft);
  font-size: 0.88rem;
  margin-top: -0.6em;
  margin-bottom: 1.4em;
}

.schedule {
  border-top: 1px solid var(--line);
}

.schedule-item {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 18px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  align-items: start;
}

.schedule-time {
  display: inline-block;
  font-weight: 700;
  color: var(--brown);
  font-size: 0.92rem;
  background: var(--brown-tint);
  border-radius: 6px;
  padding: 6px 10px;
  white-space: nowrap;
  width: fit-content;
}

.schedule-content p { margin: 0 0 0.3em; }
.schedule-content p:last-child { margin-bottom: 0; }

.schedule-content .session-title {
  font-weight: 600;
  color: var(--ink);
}

.schedule-content .schedule-break {
  color: var(--ink-soft);
  font-style: italic;
}

.track-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 8px;
}

.track-stack {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 8px;
}

.track {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 12px 14px;
  background: var(--paper-alt);
}

.track-label {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--green-dark);
  margin-bottom: 4px;
}

.track-topic {
  font-weight: 600;
  color: var(--ink);
  font-size: 0.92rem;
}

.track-sub {
  font-size: 0.8rem;
  color: var(--ink-soft);
  margin-top: 2px;
}

.track-grid-single {
  grid-template-columns: 1fr;
}

.track-plenary {
  background: var(--brown-tint);
  border-color: var(--brown);
}

.track-plenary .track-label {
  color: var(--brown-dark);
}

@media (max-width: 640px) {
  .schedule-item { grid-template-columns: 1fr; gap: 8px; }
  .schedule-time { margin-bottom: 2px; }
  .track-grid { grid-template-columns: 1fr; }
}