/* Give Brisbane's expanded lineup readable card widths without changing archives. */
.speaker-grid:has(> .speaker-card[data-speaker-city="brisbane"]) .speaker-info[data-enhanced] {
  flex:1 0 auto;
  row-gap:16px;
}
.speaker-grid:has(> .speaker-card[data-speaker-city="brisbane"]) .speaker-toggle {
  margin-top:auto;
}
@media (min-width:1201px) {
  .speaker-grid:has(> .speaker-card[data-speaker-city="brisbane"]) {
    grid-template-columns:repeat(4,minmax(0,1fr));
    gap:40px 24px;
  }
}

/* Only the visible text face sets the height. Portraits and controls stay aligned within each row. */
.speaker-card {
  display: flex;
  flex-direction: column;
}

.speaker-info.speaker-bio {
  margin-top: 20px;
  min-width: 0;
}

.speaker-front h3 {
  margin: 0 0 10px;
}

.speaker-front > p {
  font-size: 16px;
  line-height: 1.4;
}

.speaker-back > p {
  margin: 0;
  font: 400 14px/1.6 Outfit, Arial, sans-serif;
  color: #785959;
  overflow-wrap: anywhere;
}

/* Without JavaScript, every name, role and biography remains readable. */
.speaker-info:not([data-enhanced]) .speaker-back {
  margin-top: 16px;
}

.speaker-toggle[hidden] {
  display: none;
}

.speaker-info[data-enhanced] {
  display: flex;
  flex-direction: column;
  flex: 0 0 auto;
  perspective: 1000px;
}

.speaker-faces {
  min-width: 0;
}

.speaker-info[data-enhanced] .speaker-faces {
  position: relative;
  display: grid;
  flex: 0 0 auto;
  transform-style: preserve-3d;
  transition: transform 280ms cubic-bezier(.22, 1, .36, 1);
}

.speaker-info[data-enhanced] :is(.speaker-front, .speaker-back) {
  grid-area: 1 / 1;
  min-width: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

/* Reserve space for the current face only, rather than every hidden biography.
   Opening a longer bio grows its text row naturally, with no clipping or scroll box. */
.speaker-info[data-enhanced] :is(.speaker-front, .speaker-back)[aria-hidden="true"] {
  position: absolute;
  inset: 0 0 auto;
}

.speaker-info[data-enhanced] .speaker-back {
  transform: rotateY(180deg);
}

.speaker-info[data-bio-open="true"] .speaker-faces {
  transform: rotateY(180deg);
}

.speaker-toggle {
  display: flex;
  order: 1;
  align-items: center;
  align-self: flex-start;
  gap: 12px;
  width: 100%;
  min-height: 44px;
  margin-top: 16px;
  padding: 0;
  border: 0;
  background: transparent;
  text-align: left;
  font-size: 18px;
  line-height: 1.3;
  transform-origin: left center;
}

.speaker-toggle-label {
  display: grid;
  min-width: 0;
}

.speaker-toggle-label::after {
  content: 'Back to speaker';
  visibility: hidden;
}

.speaker-toggle-label::after,
.speaker-toggle-text {
  grid-area: 1 / 1;
}

.speaker-toggle .pixel-expand {
  transition: transform 260ms var(--pixel-ease);
}

.speaker-info[data-bio-open="true"] .pixel-expand {
  transform: rotate(180deg);
}

/* Keyboard activation is immediate, while focus stays on the same control. */
.speaker-info[data-instant="true"] :is(.speaker-faces, .pixel-expand) {
  transition: none;
}

@media (max-width: 1200px) {
  .speaker-front > p {
    font-size: 14px;
  }
}

@media (max-width: 600px) {
  .speaker-info.speaker-bio {
    margin-top: 17px;
  }
  .speaker-front h3 {
    margin-top: 0;
  }
  .speaker-front > p {
    font-size: 13px;
  }
  .speaker-back > p {
    font-size: 13px;
    line-height: 1.5;
  }
  .speaker-toggle {
    gap: 8px;
    font-size: 14px;
    margin-top: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .speaker-info[data-enhanced] .speaker-faces,
  .speaker-info[data-enhanced] .speaker-back {
    transform: none;
    transition: none;
  }
  .speaker-info[data-enhanced] [aria-hidden="true"] {
    visibility: hidden;
  }
}