/* The exam calendar (pages/exam-calendar.php): on phones a list of the days that have exams, from 720 px a month grid
   of seven columns. No fixed widths: it fits a 320 px screen. */
.exam-cal {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-4);
  padding-block: var(--space-6) var(--space-12);
}
.exam-cal-head h1,
.exam-cal-month h2 {
  margin: 0;
}
.exam-cal-head .lead {
  margin: var(--space-2) 0 0;
}
.exam-cal-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}
/* The month links and the .ics button wrap their text on narrow screens (.btn does not). */
.exam-cal-nav .btn,
.exam-cal-ics .btn {
  min-width: 0;
  min-height: 44px;
  height: auto;
  line-height: 1.3;
  white-space: normal;
}
.exam-cal-nav .btn {
  flex: 1 1 0;
}
.exam-cal-prev {
  justify-content: flex-start;
  text-align: left;
}
.exam-cal-next {
  justify-content: flex-end;
  margin-left: auto;
  text-align: right;
}
.exam-cal-ics .btn {
  text-align: left;
}
.exam-cal-month > .hint {
  margin: var(--space-1) 0 var(--space-3);
}
.exam-cal-weekdays,
.exam-cal-blank,
.exam-cal-day:not(.has-exams),
.exam-cal-date .exam-cal-num {
  display: none;
}
.exam-cal-days {
  display: grid;
  gap: var(--space-3);
  margin: 0;
  padding: 0;
  list-style: none;
}
.exam-cal-day {
  min-width: 0;
  padding: var(--space-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-md, 10px);
  background: var(--surface, transparent);
}
.exam-cal-day.is-today {
  border-color: var(--brand);
}
.exam-cal-date {
  margin: 0 0 var(--space-2);
  font-size: var(--text-base);
}
.exam-cal-exams {
  display: grid;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}
.exam-cal-exam a {
  font-weight: 600;
  overflow-wrap: anywhere;
}
.exam-cal-meta {
  display: block;
  color: var(--text-muted);
  font-size: var(--text-xs);
}
.exam-cal-ics .hint {
  margin: var(--space-2) 0 0;
}
@media (min-width: 720px) {
  .exam-cal-nav .btn {
    flex: 0 1 auto;
  }
  .exam-cal-weekdays,
  .exam-cal-days {
    display: grid;
    grid-template-columns: repeat(7, minmax(0, 1fr));
    gap: var(--space-1);
  }
  .exam-cal-weekdays {
    margin-bottom: var(--space-1);
    color: var(--text-muted);
    font-size: var(--text-xs);
    font-weight: 600;
    text-align: center;
  }
  .exam-cal-blank,
  .exam-cal-day:not(.has-exams) {
    display: block;
  }
  .exam-cal-day {
    min-height: 6rem;
    padding: var(--space-2);
    font-size: var(--text-xs);
  }
  .exam-cal-day.has-exams {
    background: var(--brand-soft, var(--surface));
  }
  .exam-cal-num {
    color: var(--text-muted);
    font-weight: 600;
  }
  .exam-cal-date {
    margin-bottom: var(--space-1);
    font-size: inherit;
  }
  .exam-cal-date .exam-cal-num {
    display: inline;
  }
  /* The weekday and month are in the grid's head row: the full date stays for screen readers only. */
  .exam-cal-full {
    position: absolute;
    overflow: hidden;
    width: 1px;
    height: 1px;
    clip: rect(0 0 0 0);
    white-space: nowrap;
  }
  .exam-cal-exam a {
    font-weight: 500;
  }
}