.department-class-timetables {
  display: grid;
  gap: 28px;
}

.timetable-organisation-switch {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 18px;
  padding: 14px 16px;
  border: 1px solid #c9d9e6;
  border-radius: 14px;
  background: #f6f9fc;
}

.timetable-organisation-switch > span {
  color: #294b65;
  font-weight: 750;
}

.timetable-organisation-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.timetable-organisation-buttons button {
  min-height: 42px;
  padding: 9px 15px;
  border: 1px solid #9db9ce;
  border-radius: 10px;
  color: #0a456c;
  background: #fff;
  font: inherit;
  font-weight: 750;
  cursor: pointer;
}

.timetable-organisation-buttons button.active {
  color: #fff;
  border-color: #087c94;
  background: #087c94;
  box-shadow: 0 4px 12px rgba(8, 124, 148, .2);
}

.timetable-department-section {
  display: grid;
  gap: 18px;
  min-width: 0;
}

.timetable-department-heading {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 2px 18px;
  padding: 18px 22px;
  color: #fff;
  background: linear-gradient(135deg, #073f63, #087c94);
  border-radius: 16px;
  box-shadow: 0 8px 22px rgba(7, 63, 99, .16);
}

.timetable-department-heading span,
.timetable-class-heading span {
  grid-column: 1;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .1em;
  text-transform: uppercase;
  opacity: .82;
}

.timetable-department-heading h2,
.timetable-class-heading h3 {
  grid-column: 1;
  margin: 0;
  line-height: 1.15;
}

.timetable-department-heading h2 { font-size: clamp(22px, 2.2vw, 32px); }
.timetable-department-heading small { grid-column: 2; grid-row: 1 / span 2; font-weight: 700; }

.timetable-class-section {
  min-width: 0;
  padding: 16px;
  border: 1px solid #c9d9e6;
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 5px 16px rgba(15, 49, 76, .08);
}

.timetable-class-heading {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 2px 14px;
  margin: -16px -16px 16px;
  padding: 14px 18px;
  color: #0a3859;
  background: #eaf3f9;
  border-bottom: 1px solid #c9d9e6;
  border-radius: 16px 16px 0 0;
}

.timetable-class-heading h3 { font-size: clamp(18px, 1.8vw, 25px); }
.timetable-class-heading small { grid-column: 2; grid-row: 1 / span 2; color: #527089; font-weight: 700; }
.timetable-class-section .weekly-timetable-wrap { margin: 0; }

@media (max-width: 760px) {
  .department-class-timetables { gap: 20px; }
  .timetable-department-heading { padding: 15px 16px; }
  .timetable-class-section { padding: 10px; }
  .timetable-class-heading { margin: -10px -10px 10px; padding: 12px 14px; }
  .timetable-organisation-buttons { width: 100%; }
  .timetable-organisation-buttons button { flex: 1 1 180px; }
  .timetable-department-heading small,
  .timetable-class-heading small { grid-column: 1; grid-row: auto; }
}

@media print {
  .timetable-department-section { break-before: page; }
  .timetable-department-section:first-child { break-before: auto; }
  .timetable-class-section { break-before: page; box-shadow: none; }
  .timetable-department-heading { box-shadow: none; print-color-adjust: exact; }
}