/* ============================================================
   SCHEDULE.CSS — Vertical Timeline Programme
   ============================================================ */

/* ——— Timeline container ——— */
.schedule-timeline {
  position: relative;
  padding-left: 2rem;
}

/* Vertical spine */
.schedule-timeline::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 2px;
  background: linear-gradient(to bottom,
      var(--color-forest),
      var(--color-sage),
      var(--color-deep-08));
  border-radius: var(--radius-full);
}

/* ——— Session block ——— */
.session-block {
  position: relative;
  margin-bottom: 0.5rem;
  display: flex;
  gap: 1.5rem;
  padding: 1.5rem 1.5rem 1.5rem 0;
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  transition: background-color var(--transition-fast);
}

.session-block:hover {
  background-color: var(--color-deep-05);
}

/* Dot on spine */
.session-block::before {
  content: '';
  position: absolute;
  left: -2.3rem;
  top: 2rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid var(--color-white);
  background-color: var(--color-slate);
  box-shadow: 0 0 0 2px var(--color-slate);
  flex-shrink: 0;
  transition: background-color var(--transition-base);
}

/* Type-specific dot colours */
.session-block--keynote::before {
  background-color: var(--color-forest);
  box-shadow: 0 0 0 2px var(--color-forest);
}

.session-block--awards::before {
  background-color: var(--color-amber);
  box-shadow: 0 0 0 2px var(--color-amber);
}

.session-block--break::before,
.session-block--lunch::before {
  background-color: var(--color-sand);
  box-shadow: 0 0 0 2px var(--color-slate);
}

.session-block--networking::before {
  background-color: var(--color-sage);
  box-shadow: 0 0 0 2px var(--color-sage);
}

/* ——— Time ——— */
.session-block__time {
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  color: var(--color-slate);
  white-space: nowrap;
  min-width: 42px;
  padding-top: 0.25rem;
  flex-shrink: 0;
}

/* ——— Icon ——— */
.session-block__icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  background-color: var(--color-deep-08);
  color: var(--color-slate);
}

.session-block--keynote .session-block__icon {
  background-color: var(--color-forest-10);
  color: var(--color-forest);
}

.session-block--awards .session-block__icon {
  background-color: var(--color-amber-10);
  color: var(--color-amber);
}

.session-block--break .session-block__icon,
.session-block--lunch .session-block__icon {
  background-color: rgba(244, 233, 216, 0.6);
  color: var(--color-slate);
}

.session-block--networking .session-block__icon {
  background-color: rgba(116, 198, 157, 0.15);
  color: var(--color-sage);
}

/* ——— Content ——— */
.session-block__content {
  flex: 1;
  min-width: 0;
}

.session-block__header-tags {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 0.35rem;
}

.session-block__type-tag {
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-slate);
  opacity: 0.6;
}

.session-block--keynote .session-block__type-tag {
  color: var(--color-forest);
  opacity: 0.9;
}

.session-block--awards .session-block__type-tag {
  color: var(--color-amber);
  opacity: 0.9;
}

.session-block__location-tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-forest);
  background-color: var(--color-forest-10);
  border: 1px solid var(--color-forest-15);
  padding: 0.1rem 0.45rem;
  border-radius: var(--radius-sm);
  font-weight: 500;
}

.session-block__title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-deep);
  margin-bottom: 0.25rem;
  line-height: 1.3;
}

.session-block__speaker {
  font-family: var(--font-heading);
  font-size: var(--text-small);
  font-weight: 500;
  color: var(--color-forest);
  margin-bottom: 0.15rem;
}

.session-block__affiliation {
  font-family: var(--font-body);
  font-size: var(--text-caption);
  color: var(--color-slate);
  margin-bottom: 0.35rem;
}

.session-block__details {
  font-family: var(--font-body);
  font-size: var(--text-small);
  color: var(--color-slate);
  opacity: 0.75;
  line-height: 1.5;
}

/* Subtle left accent line on keynotes and awards content card */
.session-block--keynote .session-block__content {
  border-left: 3px solid var(--color-forest);
  padding-left: 1.25rem;
}

.session-block--awards .session-block__content {
  border-left: 3px solid var(--color-amber);
  padding-left: 1.25rem;
}

/* ——— Legend ——— */
.schedule-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
  margin-bottom: 2.5rem;
  padding: 1rem 1.25rem;
  background-color: var(--color-deep-05);
  border-radius: var(--radius-md);
}

.schedule-legend__item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-heading);
  font-size: var(--text-caption);
  color: var(--color-slate);
}

.schedule-legend__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* ——— Responsive ——— */
@media (max-width: 560px) {
  .schedule-timeline {
    padding-left: 1.5rem;
  }

  .session-block {
    flex-direction: column;
    gap: 0.5rem;
    padding: 1rem 1rem 1rem 0;
  }

  .session-block::before {
    left: -1.825rem;
    /* center dot horizontally on spine */
    top: 1.4rem;
    /* align dot center vertically with time text */
  }

  .session-block__icon {
    display: none;
  }

  .session-block__time {
    font-size: 0.7rem;
  }
}