/* ==========================================================================
   agenda.css — meetup groups with sticky mono labels

   Each meetup is a two-column row: a sticky label rail on the left and the
   slot list on the right. The label sticks so the reader always knows which
   meetup they are inside while scrolling a long list.
   ========================================================================== */

.agenda {
  position: relative;
}

.agenda__days {
  display: flex;
  flex-direction: column;
  gap: var(--ds-space-8);
}

.agenda__group-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--ds-space-4);
  padding-bottom: var(--ds-space-3);
  border-bottom: var(--ds-border-width) solid var(--ds-color-border-default);
}

.agenda__group-heading h3 {
  font-family: var(--ds-font-display);
  font-size: clamp(24px, 4vw, 36px);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--ds-color-text-primary);
}

.agenda__group-heading h3::after {
  content: '/';
  margin-left: 4px;
  color: var(--ds-color-brand);
}

.agenda__group-heading span {
  font-family: var(--ds-font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ds-color-text-placeholder);
}

.agenda__group-heading--upcoming {
  margin-top: var(--ds-space-4);
}

@media (max-width: 600px) {
  .agenda__group-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: var(--ds-space-2);
  }
}

.agenda__day {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--ds-space-5);
  padding-top: var(--ds-space-6);
  border-top: var(--ds-border-width) solid var(--ds-color-border-subtle);
}

.agenda__day-heading {
  display: flex;
  flex-direction: column;
  gap: var(--ds-space-2);
}

.agenda__day-label {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  padding: 5px var(--ds-space-3);
  border: var(--ds-border-width) solid var(--ds-color-border-subtle);
  border-radius: var(--ds-radius-pill);
  background-color: var(--ds-color-bg-surface-1);
  font-family: var(--ds-font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--ds-color-brand);
}

.agenda__day-note {
  font-size: 13px;
  line-height: 160%;
  color: var(--ds-color-text-description);
}

/* --- slots ---------------------------------------------------------------- */

.agenda__slots {
  display: flex;
  flex-direction: column;
}

.agenda__slot {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--ds-space-2);
  padding-block: var(--ds-space-5);
  border-bottom: var(--ds-border-width) solid var(--ds-color-border-default);
  transition: background-color var(--ds-duration-base) var(--ds-ease-standard);
}

.agenda__slot:last-child {
  border-bottom: 0;
}

.agenda__time {
  font-family: var(--ds-font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ds-color-text-placeholder);
  white-space: nowrap;
}

.agenda__title {
  font-size: 17px;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--ds-color-text-primary);
}

.agenda__desc {
  margin-top: var(--ds-space-2);
  max-width: 62ch;
  font-size: 14px;
  line-height: 165%;
  color: var(--ds-color-text-description);
}

/* Headline slots get a left accent and a lifted surface */
.agenda__slot--feature {
  position: relative;
  margin-block: var(--ds-space-2);
  padding-inline: var(--ds-space-5);
  border: var(--ds-border-width) solid var(--ds-color-border-default);
  border-radius: var(--ds-radius-panel);
  background-color: var(--ds-color-bg-surface-3);
}

.agenda__slot--feature::before {
  content: '';
  position: absolute;
  top: var(--ds-space-5);
  bottom: var(--ds-space-5);
  left: 0;
  width: 2px;
  border-radius: var(--ds-radius-pill);
  background: var(--ds-gradient-accent);
}

.agenda__slot--feature .agenda__title {
  color: var(--ds-color-text-primary);
}

@media (min-width: 768px) {
  .agenda__slot {
    grid-template-columns: 150px 1fr;
    gap: var(--ds-space-5);
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .agenda__day {
    grid-template-columns: 260px 1fr;
    gap: var(--ds-space-7);
  }

  .agenda__day-heading {
    position: sticky;
    top: calc(var(--ds-header-height) + var(--ds-space-7));
  }
}