/* Conference essentials: readable pages, book covers and native FAQ disclosures. */
.iac-info-hero {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, calc(24rem * var(--iac-ui-scale, 1))), 1fr));
  align-items: center;
  gap: clamp(calc(2rem * var(--iac-ui-scale, 1)), calc(5vw * var(--iac-ui-scale, 1)), calc(5rem * var(--iac-ui-scale, 1)));
  margin: calc(4.5rem * var(--iac-ui-scale, 1)) 0 calc(4rem * var(--iac-ui-scale, 1)) !important;
}

.iac-info-hero > *, .iac-info-card {
  min-width: 0;
}

.iac-info-hero h1 {
  margin: calc(1.5rem * var(--iac-ui-scale, 1)) 0 !important;
  font: 400 max(1rem, calc(clamp(2.75rem, 5.8vw, 5.5rem) * var(--iac-ui-scale, 1)))/1.06 'DM Serif Display', Georgia, serif;
  letter-spacing: -.04em;
}

.iac-info-deck, .iac-info-reading {
  max-width: 65ch;
  font-size: var(--iac-type-reading);
  line-height: 1.8;
}

.iac-info-hero .iac-tiac-actions {
  justify-content: flex-start;
  margin-top: calc(1.75rem * var(--iac-ui-scale, 1)) !important;
}

/* Decorative book covers reuse the conference paper and ink palette. */
.iac-info-book {
  position: relative;
  justify-self: end;
  display: grid;
  align-content: space-between;
  gap: calc(1.5rem * var(--iac-ui-scale, 1));
  width: 100%;
  max-width: calc(26rem * var(--iac-ui-scale, 1));
  min-height: max(44px, calc(27rem * var(--iac-ui-scale, 1)));
  padding: calc(2rem * var(--iac-ui-scale, 1)) calc(2rem * var(--iac-ui-scale, 1)) calc(2rem * var(--iac-ui-scale, 1)) calc(2.25rem * var(--iac-ui-scale, 1));
  color: var(--iac-tiac-ink);
  background: var(--iac-paper-soft);
  border: 1px solid var(--iac-tiac-line);
  border-left: 6px solid var(--iac-accent);
  border-radius: 3px 10px 10px 3px;
  box-shadow: 4px 4px 0 var(--iac-paper-raised), 6px 6px 0 var(--iac-tiac-line);
}

.iac-info-book::before {
  content: '';
  position: absolute;
  top: 0;
  right: calc(1.75rem * var(--iac-ui-scale, 1));
  width: calc(1.25rem * var(--iac-ui-scale, 1));
  height: calc(3.5rem * var(--iac-ui-scale, 1));
  background: var(--iac-accent);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 50% 82%, 0 100%);
}

.iac-info-book > .iac-tiac-smallcaps {
  max-width: 80%;
}

.iac-info-book-year {
  font: 400 max(1rem, calc(clamp(4rem, 8vw, 6.5rem) * var(--iac-ui-scale, 1)))/1 'DM Serif Display', Georgia, serif;
  letter-spacing: -.04em;
}

.iac-info-book-title {
  font: 400 max(1rem, calc(clamp(1.75rem, 2.6vw, 2.5rem) * var(--iac-ui-scale, 1)))/1.12 'DM Serif Display', Georgia, serif;
  letter-spacing: -.025em;
}

.iac-info-book-imprint {
  padding-top: calc(1.25rem * var(--iac-ui-scale, 1));
  border-top: 1px solid currentColor;
  font: 600 var(--iac-type-small)/1.7 'Courier New', monospace;
}

.iac-info-book-status {
  font: 600 var(--iac-type-small)/1.6 'Courier New', monospace;
}

.iac-info-book-dark {
  color: var(--iac-tiac-paper);
  background: var(--iac-ink);
  border-color: var(--iac-gilt);
}

.iac-info-book-dark::before {
  background: var(--iac-gilt);
}

/* Content sections and flexible cards accommodate text enlargement. */
.iac-info-section {
  margin-top: calc(4rem * var(--iac-ui-scale, 1)) !important;
  scroll-margin-top: calc(1.5rem * var(--iac-ui-scale, 1));
}

.iac-info-section > .iac-tiac-smallcaps {
  margin-bottom: calc(1rem * var(--iac-ui-scale, 1)) !important;
}

.iac-info-section h2 {
  margin-bottom: calc(1.5rem * var(--iac-ui-scale, 1)) !important;
  font: 400 max(1rem, calc(clamp(2rem, 3.3vw, 3.25rem) * var(--iac-ui-scale, 1)))/1.15 'DM Serif Display', Georgia, serif;
  letter-spacing: -.03em;
}

.iac-info-section > p + p {
  margin-top: calc(1rem * var(--iac-ui-scale, 1)) !important;
}

.iac-info-section .iac-tiac-actions {
  justify-content: flex-start;
  margin-top: calc(1.75rem * var(--iac-ui-scale, 1)) !important;
}

.iac-info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, calc(17rem * var(--iac-ui-scale, 1))), 1fr));
  gap: calc(1.5rem * var(--iac-ui-scale, 1));
  margin-top: calc(2rem * var(--iac-ui-scale, 1)) !important;
}

.iac-info-card {
  padding: calc(1.75rem * var(--iac-ui-scale, 1));
  border: 1px solid var(--iac-tiac-line);
  border-left: 3px solid var(--iac-gilt);
  border-radius: 2px 6px 6px 2px;
  background: var(--iac-paper-raised);
}

.iac-info-card > .iac-tiac-smallcaps {
  margin-bottom: calc(1rem * var(--iac-ui-scale, 1)) !important;
}

.iac-info-card h3 {
  margin: 0 0 calc(1rem * var(--iac-ui-scale, 1)) !important;
  font: 400 max(1rem, calc(1.75rem * var(--iac-ui-scale, 1)))/1.2 'DM Serif Display', Georgia, serif;
  letter-spacing: -.02em;
}

.iac-info-card p {
  font-size: var(--iac-type-body);
  line-height: 1.8;
}

.iac-info-card .iac-tiac-text-link {
  margin-top: calc(1.25rem * var(--iac-ui-scale, 1)) !important;
}

.iac-info-card .iac-tiac-text-link a {
  display: inline-block;
  min-height: 44px;
  padding-block: calc(.5rem * var(--iac-ui-scale, 1));
}

.iac-info-colophon {
  padding: calc(2.5rem * var(--iac-ui-scale, 1)) 0;
  border-block: 3px double var(--iac-tiac-line);
}

/* Native Details retain keyboard behaviour without a script dependency. */
.iac-faq-index {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: calc(.75rem * var(--iac-ui-scale, 1)) calc(1.75rem * var(--iac-ui-scale, 1));
  padding: calc(1rem * var(--iac-ui-scale, 1)) 0;
  border-block: 1px solid var(--iac-tiac-line);
  font-size: var(--iac-type-body);
}

.iac-faq-index a {
  display: inline-block;
  padding-block: calc(.5rem * var(--iac-ui-scale, 1));
}

.iac-faq-group {
  max-width: calc(66rem * var(--iac-ui-scale, 1));
}

.iac-faq-item {
  margin: 0;
  padding: calc(1rem * var(--iac-ui-scale, 1)) 0;
  border-bottom: 1px solid var(--iac-tiac-line);
  font-size: var(--iac-type-reading);
  line-height: 1.8;
}

.iac-faq-item summary {
  display: list-item;
  min-height: 44px;
  margin-left: calc(1.25rem * var(--iac-ui-scale, 1));
  padding: max(8px, calc(.25rem * var(--iac-ui-scale, 1))) calc(.5rem * var(--iac-ui-scale, 1)) max(8px, calc(.25rem * var(--iac-ui-scale, 1))) calc(.25rem * var(--iac-ui-scale, 1));
  cursor: pointer;
  font-size: var(--iac-type-reading);
  font-weight: 600;
  line-height: 1.6;
  overflow-wrap: anywhere;
}

.iac-faq-item summary::marker {
  color: var(--iac-accent);
}

.iac-faq-item summary:hover {
  color: var(--iac-accent);
}

.iac-faq-item summary:focus-visible {
  outline: 3px solid var(--iac-accent);
  outline-offset: 4px;
  border-radius: 3px;
}

.iac-faq-item > :not(summary) {
  max-width: 65ch;
  margin-top: calc(1rem * var(--iac-ui-scale, 1)) !important;
}

/* An informational status, with no disabled or simulated purchase control. */
.iac-ticket-status {
  display: inline-flex;
  align-items: center;
  gap: calc(.75rem * var(--iac-ui-scale, 1));
  max-width: 100%;
  margin-bottom: calc(1.5rem * var(--iac-ui-scale, 1)) !important;
  padding: calc(.75rem * var(--iac-ui-scale, 1)) calc(1rem * var(--iac-ui-scale, 1));
  border: 1px solid var(--iac-tiac-line);
  border-radius: 5px;
  background: var(--iac-paper-soft);
  font: 600 var(--iac-type-small)/1.6 'Courier New', monospace;
}

.iac-ticket-status::before {
  content: '';
  flex: 0 0 calc(.5rem * var(--iac-ui-scale, 1));
  height: calc(.5rem * var(--iac-ui-scale, 1));
  border-radius: 50%;
  background: var(--iac-accent);
}

@media (max-width: 900px) {
  .iac-info-book {
    justify-self: start;
    max-width: none;
    min-height: max(44px, calc(23rem * var(--iac-ui-scale, 1)));
  }

  /* Keep the FAQ answers close to the introduction on narrow screens. */
  .iac-info-hero:has(+ .iac-faq-index) .iac-info-book {
    display: none;
  }

}
@media (max-width: 640px) {
  .iac-info-hero {
    margin: calc(2.75rem * var(--iac-ui-scale, 1)) 0 calc(3rem * var(--iac-ui-scale, 1)) !important;
    gap: calc(2.5rem * var(--iac-ui-scale, 1));
  }

  .iac-info-book {
    padding: calc(1.5rem * var(--iac-ui-scale, 1));
  }

  .iac-info-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .iac-info-card {
    padding: calc(1.5rem * var(--iac-ui-scale, 1));
  }

  .iac-info-section {
    margin-top: calc(3rem * var(--iac-ui-scale, 1)) !important;
  }

  .iac-faq-index {
    display: block;
  }

  .iac-faq-index > .iac-tiac-smallcaps {
    margin-bottom: calc(.5rem * var(--iac-ui-scale, 1)) !important;
  }

  .iac-info-colophon {
    padding-block: calc(2rem * var(--iac-ui-scale, 1));
  }

}