.calendar-layout {
  display: grid;
  grid-template-columns: minmax(280px, 400px) 1fr;
  gap: 2.5rem;
  align-items: start;
}

.calendar {
  padding: 1.5rem;
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.calendar-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.calendar-top h3 {
  margin: 0;
}

.calendar-top button {
  width: 38px;
  height: 38px;
  border: 0;
  border-radius: var(--radius-sm);
  background: var(--bg-alt);
  color: var(--blue);
  font-size: 1.2rem;
  cursor: pointer;
}

.weekdays,
#calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
  text-align: center;
}

.weekdays span {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  padding-bottom: 0.4rem;
}

#calendar-grid button {
  aspect-ratio: 1;
  border: 0;
  border-radius: 6px;
  background: transparent;
  font: inherit;
  font-size: 0.95rem;
  color: var(--ink);
  cursor: pointer;
  position: relative;
}

#calendar-grid button:hover {
  background: var(--bg-alt);
}

#calendar-grid .today {
  outline: 2px solid var(--line);
}

#calendar-grid .has-event {
  background: var(--yellow);
  color: var(--blue-deep);
  font-weight: 800;
}

#calendar-grid .selected {
  background: var(--blue);
  color: #fff;
}

#calendar-detail h3 {
  margin-bottom: 1rem;
}

#calendar-detail .event-card + .event-card {
  margin-top: 1rem;
}

.past-events summary {
  cursor: pointer;
  font-family: var(--font-head);
  font-weight: 700;
  color: var(--blue);
  margin-top: 2.5rem;
}

.past-events .stack {
  margin-top: 1rem;
  opacity: 0.8;
}

@media (max-width: 860px) {
  .calendar-layout {
    grid-template-columns: 1fr;
  }
}