.schedule-heading {
  font-size: 2.4em;
  text-align: center;
  color: var(--accent);
  margin-bottom: 26px;
  font-family: "Georgia", serif;
  font-variant: small-caps;
  letter-spacing: 0.6px;
}

.schedule-container {
  display: flex;
  flex-direction: column;
  gap: 30px;
  width: 100%;
}

.schedule-switcher {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 6px;
  gap: 6px;
  margin-bottom: 18px;

  border-radius: 999px;
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--surface) 92%, var(--surface-2)),
    color-mix(in srgb, var(--surface) 72%, var(--surface-2))
  );
  border: 1px solid color-mix(in srgb, var(--border) 85%, var(--accent-weak));
  box-shadow: var(--shadow-xs);

  flex-wrap: wrap;
}

.schedule-switch-btn {
  padding: 10px 18px;
  background: transparent;
  color: var(--text);
  border: 1px solid transparent;
  border-radius: 999px;
  cursor: pointer;
  font-size: 1em;
  transition: background-color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease, color 0.18s ease, border-color 0.18s ease;
  box-shadow: none;
}

.schedule-switch-btn:hover {
  background: color-mix(in srgb, var(--surface-2) 78%, transparent);
  transform: translateY(-0.5px);
  box-shadow: none;
}

.schedule-switch-btn:active {
  transform: translateY(0);
}

.schedule-switch-btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--accent-weak), var(--shadow-xs);
}

.schedule-switch-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #ffffff;
  box-shadow: var(--shadow-xs);
}

.schedule-switch-btn.active:hover {
  background: var(--accent-strong);
}

@media (max-width: 520px){
  .schedule-switcher{
    justify-content: flex-start;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .schedule-switcher::-webkit-scrollbar{ display:none; }
  .schedule-switch-btn{ white-space: nowrap; }
}
.schedule-section { display: none; }

.schedule-section.active {
  display: block;
  padding: 18px;
  border-radius: var(--radius-sm);
  background: linear-gradient(
    180deg,
    var(--surface),
    color-mix(in srgb, var(--surface) 70%, var(--surface-2))
  );
  border: 1px solid color-mix(in srgb, var(--border) 85%, var(--accent-weak));
  box-shadow: var(--shadow-xs);
}
.ustc-local-save-hint {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin: 6px auto 16px;
  padding: 10px 14px;
  max-width: 980px;
  background: var(--surface);
  border: 1px dashed var(--border);
  border-radius: 14px;
  color: var(--muted);
  font-size: 0.95em;
  box-shadow: var(--shadow-sm);
}

.ustc-local-save-hint i {
  color: var(--accent);
}

#calendar-container {
  height: 70vh;
  margin-bottom: 20px;
}

.fc { font-family: "Georgia", serif; }

.fc-toolbar-title {
  font-family: "Georgia", serif;
  font-size: 1.35em;
  color: var(--accent);
}

/* FullCalendar grid polish (paper-like, understated) */
.fc .fc-scrollgrid,
.fc .fc-scrollgrid table,
.fc .fc-scrollgrid-section > td,
.fc .fc-scrollgrid-section table,
.fc .fc-scrollgrid td,
.fc .fc-scrollgrid th {
  border-color: color-mix(in srgb, var(--border) 72%, transparent) !important;
}

.fc .fc-col-header-cell-cushion,
.fc .fc-daygrid-day-number {
  text-decoration: none;
}

.fc-daygrid-day.fc-day-sat:not(.fc-day-today),
.fc-daygrid-day.fc-day-sun:not(.fc-day-today) {
  background: color-mix(in srgb, var(--surface) 88%, var(--surface-2)) !important;
}

.fc .fc-button,
.fc-button {
  background: var(--surface) !important;
  border-color: var(--border) !important;
  color: var(--text) !important;
  border-radius: 12px !important;
  box-shadow: var(--shadow-sm) !important;
  transition: background-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}

.fc .fc-button:hover,
.fc-button:hover {
  background: var(--surface-2) !important;
  box-shadow: var(--shadow) !important;
  transform: translateY(-0.5px);
}

.fc .fc-button:active,
.fc-button:active {
  transform: translateY(0);
  box-shadow: var(--shadow-xs) !important;
}

.fc .fc-button:focus-visible,
.fc-button:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--accent-weak), var(--shadow-sm) !important;
}

.fc .fc-button:disabled,
.fc-button:disabled {
  opacity: 0.6;
  box-shadow: none !important;
  transform: none !important;
}

.fc .fc-button-primary.fc-button-active,
.fc .fc-button-primary:not(:disabled).fc-button-active,
.fc .fc-button-primary:not(:disabled):active {
  background: var(--accent) !important;
  border-color: var(--accent) !important;
  color: #ffffff !important;
  box-shadow: var(--shadow) !important;
}

.fc-daygrid-day-number { color: var(--accent); }

.fc-daygrid-day.fc-day-today {
  background: var(--accent-weak) !important;
}

.fc-event {
  /* “Left bar + light fill” looks more like a polished calendar than a solid chip */
  background: color-mix(in srgb, var(--accent-weak) 72%, var(--surface)) !important;
  border: 1px solid color-mix(in srgb, var(--border) 78%, var(--accent-weak)) !important;
  color: var(--text) !important;
  cursor: pointer;
  transition: background-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease, border-color 0.18s ease;
  border-radius: 10px;
  position: relative;
  padding-left: 10px;
}

.fc-event::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--accent);
  opacity: 0.95;
  border-top-left-radius: 10px;
  border-bottom-left-radius: 10px;
}

.fc-event:hover {
  background: color-mix(in srgb, var(--accent-weak) 88%, var(--surface)) !important;
  border-color: color-mix(in srgb, var(--accent) 55%, var(--border)) !important;
  box-shadow: var(--shadow-sm);
  transform: translateY(-0.5px);
}

.fc-event:active {
  transform: translateY(0);
  box-shadow: var(--shadow-xs);
}

.timetable-container {
  width: 100%;
  overflow-x: auto;
}

.timetable {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin-top: 20px;
  border-radius: var(--radius);
  overflow: hidden;
}

.timetable th, .timetable td,
#ustc-timetable th, #ustc-timetable td,
.my-classes-table th, .my-classes-table td {
  border: 1px solid var(--border);
  padding: 12px;
  text-align: center;
}

.timetable th {
  background: var(--surface-2);
  color: var(--text);
  font-weight: 600;
}

.timetable td {
  background-color: var(--surface);
  height: 60px;
  vertical-align: middle;
  position: relative;
  color: var(--text);
}

.timetable td.time-cell {
  background-color: var(--surface-2);
  font-weight: 600;
}

/* Sticky first (time/period) column for easier horizontal scrolling */
.timetable th:first-child,
.timetable td.time-cell,
#ustc-timetable th:first-child,
#ustc-timetable .period-header {
  position: sticky;
  left: 0;
  z-index: 3;
}

.timetable th:first-child,
#ustc-timetable th:first-child {
  z-index: 4;
  background: var(--surface-2);
  border-right: 1px solid color-mix(in srgb, var(--border) 75%, transparent);
}

.timetable td.time-cell,
#ustc-timetable .period-header {
  background: var(--surface-2);
  border-right: 1px solid color-mix(in srgb, var(--border) 75%, transparent);
}

.timetable td.empty-cell {
  background-color: var(--surface);
}

.timetable td.has-event {
  background: var(--accent-weak) !important;
  cursor: pointer;
}

.timetable td.has-event:hover {
  background: var(--accent-weak) !important;
}

.timetable-event {
  position: absolute;
  top: 2px;
  left: 2px;
  right: 2px;
  bottom: 2px;

  background: color-mix(in srgb, var(--accent-weak) 72%, var(--surface));
  color: var(--text);

  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  border-radius: 10px;
  font-size: 0.9em;
  padding: 2px;
  overflow: hidden;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background-color 0.18s ease, border-color 0.18s ease;
  border: 1px solid color-mix(in srgb, var(--border) 78%, var(--accent-weak));
}

.timetable-event::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--accent);
  opacity: 0.95;
  border-top-left-radius: 10px;
  border-bottom-left-radius: 10px;
}

.timetable-event:hover {
  background: color-mix(in srgb, var(--accent-weak) 88%, var(--surface));
  border-color: color-mix(in srgb, var(--accent) 55%, var(--border));
  transform: translateY(-0.5px);
  box-shadow: var(--shadow-sm);
}

.timetable-event:active {
  transform: translateY(0);
  box-shadow: var(--shadow-xs);
}

.event-modal {
  display: none;
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.55);
  z-index: 10000;
  justify-content: center;
  align-items: center;

  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.event-modal-content {
  background:
    linear-gradient(
      180deg,
      color-mix(in srgb, var(--surface) 92%, var(--surface-2)),
      var(--surface)
    );
  color: var(--text);

  padding: 34px 36px;
  width: min(92vw, 720px);
  max-width: 720px;

  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  border: 1px solid color-mix(in srgb, var(--border) 82%, var(--accent-weak));
  position: relative;

  max-height: calc(100vh - 110px);
  overflow-y: auto;
}

.event-modal-content::before {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  top: 14px;
  height: 2px;
  border-radius: 2px;
  background: color-mix(in srgb, var(--accent) 45%, transparent);
  opacity: 0.35;
}

#event-modal .event-modal-content {
  width: min(92vw, 860px);
  max-width: 860px;

  transform: none;
  transform-origin: center;

  max-height: calc(100vh - 110px);
  overflow-y: auto;
}

#general-event-modal .event-modal-content {
  width: min(92vw, 720px);
  max-width: 720px;
}

.event-modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  font-size: 1.55em;
  cursor: pointer;
  color: var(--muted);
  transition: color 0.2s ease, transform 0.2s ease, background-color 0.2s ease;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.event-modal-close:hover {
  color: var(--danger);
  transform: translateY(-0.5px);
  background: color-mix(in srgb, var(--surface-2) 85%, transparent);
}

.event-modal-close:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--accent-weak);
}

.event-modal-title {
  font-size: 1.6em;
  margin-bottom: 22px;
  color: var(--accent);
  text-align: center;
  letter-spacing: 0.2px;
}

.event-form-group { margin-bottom: 20px; }

.event-form-group label {
  display: block;
  margin-bottom: 10px;
  color: var(--accent);
  font-weight: 700;
}

.event-form-control {
  width: 100%;
  padding: 12px 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  font-family: "Georgia", serif;
  font-size: 1em;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
  background: var(--surface);
  color: var(--text);
}

.event-form-control:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-weak);
  background: color-mix(in srgb, var(--surface) 92%, var(--surface-2));
}

.event-form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 28px;
  padding-top: 6px;
}

.event-form-btn {
  padding: 12px 20px;
  border-radius: 12px;
  cursor: pointer;
  font-family: "Georgia", serif;
  font-size: 1em;
  transition: background-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease, border-color 0.2s ease, color 0.2s ease;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow-xs);
}

.event-form-btn:hover {
  background: var(--surface-2);
  transform: translateY(-0.5px);
  box-shadow: var(--shadow-sm);
}

.event-form-btn:active {
  transform: translateY(0);
  box-shadow: var(--shadow-xs);
}

.event-form-btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--accent-weak), var(--shadow-xs);
}

.event-form-btn-save {
  background: var(--accent);
  border-color: var(--accent);
  color: #ffffff;
  box-shadow: var(--shadow-sm);
}

.event-form-btn-save:hover {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
}

.event-form-btn-delete {
  background-color: var(--danger);
  border-color: var(--danger);
  color: #ffffff;
}

.event-form-btn-delete:hover {
  background-color: var(--danger-strong);
  border-color: var(--danger-strong);
}

.event-form-btn-cancel {
  background: var(--surface);
  color: var(--text);
}

.add-event-btn {
  display: block;
  padding: 12px 24px;
  background: var(--accent);
  color: #ffffff;
  border: 1px solid var(--accent);
  border-radius: 30px;
  font-family: "Georgia", serif;
  font-size: 1em;
  cursor: pointer;
  transition: background-color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
  box-shadow: var(--shadow-sm);
  position: relative;
  z-index: 100;
  margin: 18px auto 36px;
}

.add-event-btn:hover {
  background: var(--accent-strong);
  transform: translateY(-0.5px);
  box-shadow: var(--shadow);
}

.add-event-btn:active {
  transform: translateY(0);
  box-shadow: var(--shadow-xs);
}

.add-event-btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--accent-weak), var(--shadow-sm);
}

.week-navigation {
  position: sticky;
  top: 12px;
  z-index: 5;

  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;

  margin-bottom: 18px;
  padding: 10px 12px;
  border-radius: 14px;

  background: color-mix(in srgb, var(--surface) 88%, transparent);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);

  border: 1px solid color-mix(in srgb, var(--border) 80%, var(--accent-weak));
  box-shadow: var(--shadow-xs);
}

@media (max-width: 520px){
  .week-navigation{
    top: 8px;
  }
}
.week-title {
  font-size: 1.35em;
  color: var(--accent);
  font-weight: 700;
}

.week-nav-btn {
  background: var(--surface);
  color: var(--accent);
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  transition: background-color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
  box-shadow: var(--shadow-sm);
}

.week-nav-btn:hover {
  background: var(--surface-2);
  transform: translateY(-0.5px);
  box-shadow: var(--shadow);
}

.week-nav-btn:active {
  transform: translateY(0);
  box-shadow: var(--shadow-xs);
}

.week-nav-btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--accent-weak), var(--shadow-sm);
}

#ustc-timetable {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin-top: 20px;
  font-family: "Georgia", serif;
  border-radius: var(--radius);
  overflow: hidden;
}

#ustc-timetable th {
  background: var(--surface-2);
  color: var(--text);
  font-weight: 700;
}

#ustc-timetable td {
  background-color: var(--surface);
  height: 50px;
  vertical-align: middle;
  color: var(--text);
}

#ustc-timetable .period-header {
  background-color: var(--surface-2);
  font-weight: 700;
  text-align: center;
  vertical-align: middle;
  width: 80px;
}

#ustc-timetable td.has-class {
  background: var(--accent-weak) !important;
}

.ustc-event-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 10;
  background: color-mix(in srgb, var(--accent-weak) 70%, var(--surface));
  border-radius: 10px;
  border: 1px solid color-mix(in srgb, var(--border) 78%, var(--accent-weak));
  box-shadow: var(--shadow-xs);
  transition: background-color 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease, transform 0.18s ease;
}

.ustc-event-overlay:hover {
  background: color-mix(in srgb, var(--accent-weak) 86%, var(--surface));
  border-color: color-mix(in srgb, var(--accent) 55%, var(--border));
  box-shadow: var(--shadow-sm);
  transform: translateY(-0.5px);
}

.ustc-event-overlay:active {
  transform: translateY(0);
  box-shadow: var(--shadow-xs);
}

.course-number {
  font-weight: 700;
  font-size: 0.75em;
  margin-bottom: 2px;
  color: var(--text);
  letter-spacing: 0.3px;

  /* Allow a small type badge to sit next to the course code */
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

/* =========================================================
   Course type badge (Major / Minor / Micro-minor / TA)
   ========================================================= */
.course-type-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;

  padding: 2px 8px;
  border-radius: 999px;

  font-size: 0.72em;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.2px;

  color: var(--accent);
  background: color-mix(in srgb, var(--accent-weak) 82%, transparent);
  border: 1px solid color-mix(in srgb, var(--border) 78%, var(--accent-weak));
  box-shadow: var(--shadow-xs);
}

.my-classes-table .course-type-badge {
  margin-left: 6px;
}

.course-code {
  font-weight: 700;
}


.course-name {
  font-weight: 700;
  font-size: 0.9em;
  margin-bottom: 2px;
  color: var(--accent);
}

.credits-inline {
  font-weight: 700;
  font-size: 0.85em;
  color: var(--text);
  margin-left: 6px;
  letter-spacing: 0.2px;
}

.instructor {
  font-size: 0.8em;
  font-style: italic;
  color: var(--muted);
}

.ustc-classes-container { margin-top: 30px; }

.ustc-classes-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin-top: 10px;
  border-radius: var(--radius);
  overflow: hidden;
}

.ustc-classes-table th {
  background: var(--surface-2);
}

.my-classes-container { margin-top: 30px; }

.my-classes-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin-top: 10px;
  border-radius: var(--radius);
  overflow: hidden;
}

.my-classes-table th {
  background: var(--surface-2);
  color: var(--text);
}

.my-classes-table td {
  background-color: var(--surface);
  padding: 12px;
  text-align: center;
  vertical-align: middle;
  color: var(--text);
}

.days-container {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.days-container label {
  display: flex;
  align-items: center;
  gap: 5px;
}

#schedule .container {
  max-width: 95%;
  width: 100%;
  padding: 30px 15px;
}

.event-cell .time-info {
  position: absolute;
  font-size: 0.7em;
  padding: 2px 6px;
  border-radius: 6px;
  z-index: 20;

  background: transparent;
  border: transparent;
  color: var(--text);

  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.15s ease, visibility 0.15s ease;
}

.event-cell:hover .time-info,
.event-cell:focus-within .time-info {
  opacity: 1;
  visibility: visible;
}

.start-info { top: 2px; left: 2px; }
.end-info { bottom: 2px; right: 2px; }

.event-cell {
  position: relative;
  overflow: hidden;
  border-radius: 8px;
  box-shadow: inset 0 0 8px rgba(0,0,0,0.08);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.event-cell:hover {
  box-shadow: inset 0 0 12px rgba(0,0,0,0.10);
  transform: scale(1.01);
}

.event-cell::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--accent);
  transition: height 0.2s ease;
}

.event-cell:hover::before { height: 5px; }

.ustc-timetable-cell {
  position: relative;
  height: 50px;
}

.ustc-course-info {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 5px;
  z-index: 5;
  background: var(--accent-weak);
  border-radius: 6px;
}

.ustc-course-info:hover { background: var(--accent-weak); }

.merged-cell {
  border: none !important;
  background-color: transparent !important;
  padding: 0 !important;
  height: 0 !important;
}

.course-container {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: 100%;
  width: 100%;
  text-align: center;
  position: relative;
}

.period-number {
  background-color: var(--surface-2);
  font-weight: 700;
  border-right: 1px solid var(--border);
}

.overlap-container {
  display: flex;
  flex-direction: column;
  width: 100%;

  height: 100%;
  min-height: 100%;

  position: relative;
}

.overlap-course {
  flex: 1 1 auto;

  width: 100%;
  box-sizing: border-box;

  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;

  text-align: center;
  padding: 6px 4px;

  overflow: visible;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.overlap-course + .overlap-course {
  border-top: 1px dashed var(--border);
}

.weeks-container {
  margin-top: 10px;
  margin-bottom: 15px;
}

.weeks-title {
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--accent);
}

.weeks-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 8px;
}

.week-checkbox {
  display: flex;
  align-items: center;
}

.week-checkbox label {
  margin-left: 5px;
  font-size: 0.9em;
}

.week-display {
  font-size: 0.85em;
  color: var(--muted);
  margin-top: 5px;
  min-height: 20px;
}

.semester-selector {
  display: flex;
  justify-content: center;
  margin-bottom: 20px;
}

.semester-dropdown {
  position: relative;
  display: inline-block;
  width: 100%;
  max-width: 300px;
}

.semester-dropdown-btn {
  background: var(--surface);
  color: var(--text);
  padding: 12px 20px;
  font-size: 16px;
  border: 1px solid var(--border);
  border-radius: 30px;
  cursor: pointer;
  width: 100%;
  text-align: left;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: var(--shadow-sm);
  transition: background-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}

.semester-dropdown-btn:hover {
  background: var(--surface-2);
  box-shadow: var(--shadow);
}

.semester-dropdown-btn:active {
  transform: translateY(0);
  box-shadow: var(--shadow-xs);
}

.semester-dropdown-btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--accent-weak), var(--shadow-sm);
}

.semester-dropdown-content {
  display: none;
  position: absolute;
  background-color: var(--surface);
  width: 100%;
  box-shadow: var(--shadow);
  z-index: 1;
  border-radius: 14px;
  overflow: hidden;
  margin-top: 6px;
  border: 1px solid var(--border);
}

.semester-dropdown-content a {
  color: var(--accent);
  padding: 12px 16px;
  text-decoration: none;
  display: block;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.semester-dropdown-content a:hover {
  background: var(--accent-weak);
  color: var(--accent-strong);
}

.semester-dropdown:hover .semester-dropdown-content {
  display: block;
}

.semester-dropdown:focus-within .semester-dropdown-content {
  display: block;
}

.semester-dropdown:hover .semester-dropdown-btn {
  background: var(--surface-2);
}

.semester-timetable-container {
  display: none;
  margin-top: 20px;
}

.semester-timetable-container.active { display: block; }

.semester-title {
  text-align: center;
  font-size: 1.6em;
  margin-bottom: 20px;
  color: var(--accent);
  font-family: "Georgia", serif;
  font-variant: small-caps;
}

@media (max-width: 900px) {
  .schedule-heading { font-size: 2em; }
  .timetable th, .timetable td,
  #ustc-timetable th, #ustc-timetable td,
  .my-classes-table th, .my-classes-table td { padding: 8px; }

  .event-modal-content {
    padding: 26px 20px;
    width: min(94vw, 720px);
  }
  #event-modal .event-modal-content {
    width: min(94vw, 860px);
  }
}

/* --- Current Rhythm additions --- */
.page-subtitle{
  max-width: 760px;
  margin: 0 auto 24px;
  text-align: center;
  color: var(--muted);
  line-height: 1.7;
}
.schedule-grid{
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-bottom: 26px;
}
.schedule-card{
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px 18px 16px;
  background: color-mix(in srgb, var(--surface) 88%, var(--accent-weak));
  box-shadow: var(--shadow-xs);
}
.schedule-title{
  font-size: 1.08em;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 10px;
}
.routine-table-wrap{
  overflow-x: auto;
}
.note-box{
  width: 100%;
  min-height: 140px;
  resize: vertical;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  padding: 14px 16px;
  font: inherit;
  line-height: 1.65;
}
.note-status{
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.92em;
}
.placeholder-panel{
  border: 1px dashed var(--border);
  border-radius: 16px;
  padding: 26px;
  background: color-mix(in srgb, var(--surface) 90%, var(--accent-weak));
}
.placeholder-panel h2{
  margin-top: 0;
}
@media (max-width: 900px){
  .schedule-grid{
    grid-template-columns: 1fr;
  }
}


.routine-table{
  width: 100%;
  min-width: 780px;
  border-collapse: separate;
  border-spacing: 0;
  table-layout: fixed;
  border-radius: 14px;
  overflow: hidden;
}

.routine-table th,
.routine-table td{
  border: 1px solid var(--border);
  padding: 14px 16px;
  background: var(--surface);
  color: var(--text);
  vertical-align: top;
  text-align: left;
  line-height: 1.7;
  word-break: break-word;
}

.routine-table thead th{
  background: var(--surface-2);
  color: var(--accent);
  font-weight: 700;
}

.routine-table th:first-child,
.routine-table td:first-child{
  width: 120px;
  text-align: center;
  white-space: nowrap;
  background: color-mix(in srgb, var(--surface-2) 86%, var(--surface));
  font-weight: 600;
}

body[data-lang="zh"] .routine-table{
  min-width: 860px;
}

body[data-lang="zh"] .routine-table th,
body[data-lang="zh"] .routine-table td{
  font-size: 0.97rem;
}

@media (max-width: 768px){
  .routine-table{
    min-width: 760px;
  }
}