.programme-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  padding: 0;
  margin: 0 0 1.5rem;
  list-style: none;
  font-size: 0.8125rem;
  color: var(--color-deep);
}

.programme-plenary { --session-accent: #ee940c; --session-tint: rgba(238, 148, 12, 0.12); }
.programme-symposium { --session-accent: #cc5926; --session-tint: rgba(204, 89, 38, 0.10); }
.programme-social { --session-accent: #5d8589; --session-tint: rgba(93, 133, 137, 0.12); }

.programme-highlight-label {
  margin: 0 0 0.65rem;
  color: var(--color-deep);
  font-size: 0.875rem;
  font-weight: 600;
}

.programme-legend button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 44px;
  padding: 0.6rem 0.85rem;
  border: 2px solid var(--session-accent);
  border-radius: 0.5rem;
  background: var(--session-tint);
  color: var(--color-deep);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.programme-toggle-mark { width: 1em; }
.programme-legend button[aria-pressed="false"] {
  border-color: var(--color-border);
  background: rgba(77, 93, 90, 0.06);
  color: var(--color-ink);
}
.programme-legend button[aria-pressed="false"] .programme-toggle-mark { visibility: hidden; }
.programme-legend button:hover { border-color: var(--color-deep); }
.programme-legend button:focus-visible {
  outline: 3px solid var(--color-deep);
  outline-offset: 3px;
}

.programme-days {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0 0.75rem;
}

.programme-day {
  display: grid;
  grid-template-rows: subgrid;
  grid-row: span 5;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: 1rem;
  background: var(--color-surface);
  scroll-margin-top: 8rem;
}

.programme-day-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding: 1.25rem 1rem;
  background: var(--color-primary-soft);
  border-bottom: 1px solid var(--color-border);
}

.programme-day-number {
  margin: 0 0 0.35rem;
  color: var(--color-primary);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.programme-day-header h3 { margin: 0; font-size: 1.35rem; }
.programme-day-toggle { display: none; }
.programme-periods[hidden] { display: none !important; }
.programme-day-header > time { color: var(--color-deep); font-weight: 500; font-size: 0.875rem; }
.programme-periods { display: contents; }
.programme-period { padding: 1.25rem 1rem; }
.programme-period + .programme-period { border-top: 1px solid var(--color-border); }
.programme-period-empty {
  background: rgba(77, 93, 90, 0.08);
}
.programme-period.programme-period-empty h4,
.programme-period-empty p { color: #4d5d5a; }

.programme-period h4 {
  margin: 0 0 1.1rem;
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.programme-lunch h4 { margin-bottom: 0; }

.programme-events { list-style: none; padding: 0; margin: 0; }
.programme-events li { padding: 0.65rem 0; color: var(--color-deep); font-weight: 500; line-height: 1.5; }
.programme-events li + li { border-top: 1px solid var(--color-border); }
.programme-events .programme-break { color: var(--color-ink); font-size: 0.875rem; font-weight: 400; }
.programme-events .programme-plenary,
.programme-events .programme-symposium,
.programme-events .programme-social {
  padding: 0.65rem 0.7rem;
  margin: 0.25rem 0;
  border-top: 0;
  border-left: 3px solid var(--session-accent);
  border-radius: 0 0.3rem 0.3rem 0;
  background: var(--session-tint);
}
.programme-events .programme-dimmed {
  --session-accent: rgba(77, 93, 90, 0.25);
  --session-tint: rgba(77, 93, 90, 0.06);
  color: var(--color-ink);
  opacity: 0.4;
}
.programme-extension { margin-top: 2rem; padding: 1.5rem 1.75rem; border-left: 3px solid var(--session-accent); background: var(--session-tint); }
.programme-extension h3 { font-size: 1.4rem; }
.programme-extension p:last-child { margin-bottom: 0; }
.programme-note { margin: 1.5rem 0 0; font-size: 0.875rem; }

@media (max-width: 1199.98px) {
  .programme-collapsible .programme-day-title { display: none; }
  .programme-collapsible .programme-day-header {
    position: relative;
    padding-right: 3.5rem;
  }
  .programme-collapsible .programme-day-header > div { flex: 1; }
  .programme-day-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    width: 100%;
    min-height: 44px;
    padding: 0;
    border: 0;
    background: transparent;
    color: inherit;
    font: inherit;
    text-align: left;
    cursor: pointer;
  }
  .programme-day-toggle::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 1;
  }
  .programme-day-toggle::after {
    content: "";
    position: absolute;
    right: 1.5rem;
    top: 50%;
    width: 0.6rem;
    height: 0.6rem;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: translateY(-70%) rotate(45deg);
  }
  .programme-day-toggle[aria-expanded="true"]::after {
    transform: translateY(-30%) rotate(225deg);
  }
  .programme-day-toggle:focus-visible { outline: none; }
  .programme-day-toggle:focus-visible::before {
    outline: 3px solid var(--color-deep);
    outline-offset: -5px;
  }
  .programme-days { grid-template-columns: 1fr; gap: 1.5rem; }
  .programme-day { display: block; }
  .programme-periods { display: block; }
  .programme-period-empty { display: none; }
  .programme-period + .programme-period { border-top: 1px solid var(--color-border); }
  .programme-period-empty + .programme-period { border-left: 0; }
}

@media (max-width: 767.98px) {
  .programme-periods { grid-template-columns: 1fr; }
  .programme-period { padding: 1.25rem; }
  .programme-period + .programme-period { border-left: 0; border-top: 1px solid var(--color-border); }
  .programme-day-header { padding: 1.25rem; }
}
.programme-section {
  /* Logo colours, with translucent tints for quiet backgrounds. */
  --color-deep: #163f46;
  --color-primary: #163f46;
  --color-ink: #4d5d5a;
  --color-accent: #cc5926;
  --color-primary-soft: rgba(93, 133, 137, 0.12);
  --color-surface-alt: rgba(191, 137, 41, 0.08);
  --color-border: rgba(93, 133, 137, 0.25);
}