/* ==========================================================================
   Timetable Combinator - Full Uncorrupted Master CSS (100% Complete)
   ========================================================================== */

/* ------------------------------------------ */
/* Light Mode Base Styles                    */
/* ------------------------------------------ */

body {
  background-color: #f8f9fa;
  color: #212529;
}

.timetable-wrapper {
  overflow-x: auto;
  position: relative;
}

.timetable-grid {
  table-layout: fixed;
  font-size: 0.85rem;
}

.timetable-grid th {
  background-color: #f8f9fa;
  color: #212529;
  vertical-align: middle;
  border-color: #dee2e6;
}

.timetable-grid td {
  height: 44px;
  padding: 3px 4px;
  vertical-align: middle;
  border-color: #dee2e6;
  background-color: #ffffff;
}

.timetable-grid .occupied-cell {
  font-weight: 600;
  font-size: 0.78rem;
  border-radius: 4px;
  line-height: 1.25;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.05);
}

.timetable-block-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 10;
}

.form-select-sm {
  background-size: .75rem .75rem;
  padding: .45rem .75rem;
  padding-right: 1.5rem;
  font-size: 0.85rem;
}

.course-table {
  font-size: 0.88rem;
}

.course-table th {
  font-weight: 600;
  white-space: nowrap;
  padding: 0.6rem 0.5rem;
  background-color: #f8f9fa;
  color: #212529;
  border-color: #dee2e6;
}

.course-table td {
  padding: 0.55rem 0.5rem;
  border-color: #dee2e6;
}

.table-primary-subtle {
  background-color: #f0f7ff !important;
}

.table-warning-subtle {
  background-color: #fff9e6 !important;
}

.btn-toggle-star {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.btn-toggle-star i {
  transition: transform 0.15s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.btn-toggle-star:hover i {
  transform: scale(1.25);
}

.card-header-tabs {
  margin-bottom: -1px;
  border-bottom: 1px solid #dee2e6;
}

.card-header-tabs .nav-link {
  color: #6c757d;
  background-color: #f8f9fa;
  border: 1px solid #dee2e6;
  border-radius: 6px 6px 0 0;
  margin-right: 2px;
  padding: 0.4rem 0.55rem !important;
  font-size: 0.8rem !important;
  transition: all 0.15s ease-in-out;
  opacity: 0.85;
  white-space: nowrap !important;
  flex-shrink: 0;
}

.card-header-tabs .nav-link:hover {
  color: #212529;
  background-color: #e9ecef;
  opacity: 1;
}

.card-header-tabs .nav-link.active {
  color: #0d6efd !important;
  background-color: #ffffff !important;
  font-weight: 800 !important;
  border-color: #0d6efd #0d6efd #ffffff #0d6efd !important;
  border-bottom: 1px solid #ffffff !important;
  border-top: 3px solid #0d6efd !important;
  box-shadow: 0 -3px 8px rgba(13, 110, 253, 0.15);
  opacity: 1;
  z-index: 2;
  margin-bottom: -1px;
}

#mandatory-courses-tab.nav-link.active {
  color: #d69e2e !important;
  border-color: #d69e2e #d69e2e #ffffff #d69e2e !important;
  border-bottom: 1px solid #ffffff !important;
  border-top: 3px solid #ecc94b !important;
  box-shadow: 0 -3px 8px rgba(236, 201, 75, 0.25);
}

#optional-courses-tab.nav-link.active {
  color: #4a5568 !important;
  border-color: #718096 #718096 #ffffff #718096 !important;
  border-bottom: 1px solid #ffffff !important;
  border-top: 3px solid #718096 !important;
  box-shadow: 0 -3px 8px rgba(113, 128, 150, 0.2);
}

.cursor-pointer {
  cursor: pointer;
}

.btn-toggle-add,
.btn-remove-mandatory-item,
.btn-remove-optional-item {
  white-space: nowrap !important;
  flex-shrink: 0 !important;
  padding-left: .5rem;
  padding-right: .5rem;
}

.select-highlight-warning {
  border-color: #ffc107 !important;
  font-weight: 600;
  animation: pulseHighlight 1.5s infinite;
}

@keyframes pulseHighlight {
  0% { box-shadow: 0 0 0 0.15rem rgba(255, 193, 7, 0.5); }
  50% { box-shadow: 0 0 0 0.35rem rgba(255, 193, 7, 0.8); border-color: #fd7e14 !important; }
  100% { box-shadow: 0 0 0 0.15rem rgba(255, 193, 7, 0.5); }
}

.pulse-warning-btn {
  animation: pulseDanger 1.2s infinite !important;
}

@keyframes pulseDanger {
  0% { box-shadow: 0 0 0 0 rgba(220, 53, 69, 0.7); }
  70% { box-shadow: 0 0 0 8px rgba(220, 53, 69, 0); }
  100% { box-shadow: 0 0 0 0 rgba(220, 53, 69, 0); }
}

.btn-clear-modern {
  width: 22px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: #adb5bd;
  font-size: 0.72rem;
  padding: 0;
  transition: all 0.15s ease-in-out;
  cursor: pointer;
}

.btn-clear-modern:hover {
  color: #495057;
  background-color: #e9ecef;
}

.btn-social {
  border-radius: 8px;
  font-size: 0.88rem;
  transition: transform 0.15s ease, opacity 0.15s ease;
}

.btn-kakao {
  background-color: #FEE500 !important;
  color: #191919 !important;
  border: none !important;
}

.btn-kakao:hover, .btn-kakao:focus, .btn-kakao:active {
  background-color: #FEE500 !important;
  color: #191919 !important;
  opacity: 0.95;
  transform: translateY(-1px);
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.12) !important;
}

.btn-naver {
  background-color: #03CF5D !important;
  color: #ffffff !important;
  border: none !important;
}

.btn-naver:hover, .btn-naver:focus, .btn-naver:active {
  background-color: #03CF5D !important;
  color: #ffffff !important;
  opacity: 0.95;
  transform: translateY(-1px);
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.12) !important;
}

.btn-google {
  background-color: #ffffff !important;
  color: #3c4043 !important;
  border-color: #dadce0 !important;
}

.btn-google:hover, .btn-google:focus, .btn-google:active {
  background-color: #ffffff !important;
  color: #3c4043 !important;
  border-color: #dadce0 !important;
  opacity: 0.95;
  transform: translateY(-1px);
}

.btn-apple {
  background-color: #000000 !important;
  color: #ffffff !important;
}

.btn-apple:hover, .btn-apple:focus, .btn-apple:active {
  background-color: #000000 !important;
  color: #ffffff !important;
  opacity: 0.95;
  transform: translateY(-1px);
}

#favoriteTimetableBtn.is-not-favorite {
  background-color: #ffffff !important;
  color: #dc3545 !important;
  border: 1px solid #dc3545 !important;
  box-shadow: none;
  transform: translateY(0);
  transition: all 0.12s ease-in-out;
}

#favoriteTimetableBtn.is-not-favorite:hover {
  background-color: #ffffff !important;
  color: #dc3545 !important;
  border-color: #dc3545 !important;
  transform: translateY(-1px);
  box-shadow: 0 2px 6px rgba(220, 53, 69, 0.15);
}

#favoriteTimetableBtn.is-favorite {
  background-color: #dc3545 !important;
  color: #ffffff !important;
  border-color: #dc3545 !important;
  box-shadow: 0 2px 6px rgba(220, 53, 69, 0.3);
}

/* ------------------------------------------ */
/* Dark Mode Comprehensive Theme Overrides   */
/* ------------------------------------------ */

[data-bs-theme="dark"] body {
  background-color: #121214 !important;
  color: #f8f9fa !important;
}

[data-bs-theme="dark"] .card {
  background-color: #1e2229 !important;
  border-color: #2d323c !important;
  color: #f8f9fa !important;
}

[data-bs-theme="dark"] .card-header {
  background-color: #252a34 !important;
  border-bottom-color: #2d323c !important;
}

[data-bs-theme="dark"] .card-footer {
  background-color: #252a34 !important;
  border-top-color: #2d323c !important;
}

[data-bs-theme="dark"] .table {
  color: #e9ecef !important;
  border-color: #2d323c !important;
}

[data-bs-theme="dark"] .timetable-grid th {
  background-color: #252a34 !important;
  color: #f8f9fa !important;
  border-color: #2d323c !important;
}

[data-bs-theme="dark"] .timetable-grid td {
  background-color: #1a1e24 !important;
  color: #e9ecef !important;
  border-color: #252a34 !important;
}

[data-bs-theme="dark"] .course-table th {
  background-color: #252a34 !important;
  color: #f8f9fa !important;
  border-color: #2d323c !important;
}

[data-bs-theme="dark"] .course-table td {
  background-color: #1e2229 !important;
  color: #e9ecef !important;
  border-color: #2d323c !important;
}

[data-bs-theme="dark"] .list-group-item {
  background-color: #1e2229 !important;
  color: #f8f9fa !important;
  border-color: #2d323c !important;
}

[data-bs-theme="dark"] .form-select,
[data-bs-theme="dark"] .form-control {
  background-color: #252a34 !important;
  color: #f8f9fa !important;
  border-color: #3f4756 !important;
}

[data-bs-theme="dark"] .form-select option {
  background-color: #1e2229 !important;
  color: #f8f9fa !important;
}

[data-bs-theme="dark"] .card-header-tabs {
  border-bottom-color: #2d323c !important;
}

[data-bs-theme="dark"] .card-header-tabs .nav-link {
  color: #a0aec0;
  background-color: #252a34;
  border-color: #2d323c;
}

[data-bs-theme="dark"] .card-header-tabs .nav-link:hover {
  color: #ffffff;
  background-color: #2d323c;
}

[data-bs-theme="dark"] .card-header-tabs .nav-link.active {
  color: #6ea8fe !important;
  background-color: #1e2229 !important;
  border-color: #6ea8fe #6ea8fe #1e2229 #6ea8fe !important;
  border-bottom: 1px solid #1e2229 !important;
  border-top: 3px solid #6ea8fe !important;
}

[data-bs-theme="dark"] .modal-content {
  background-color: #1e2229 !important;
  color: #f8f9fa !important;
  border-color: #2d323c !important;
}

/* ------------------------------------------ */
/* 강의 블록 기본 스타일                     */
/* ------------------------------------------ */

.lecture-block {
  position: absolute;
  pointer-events: auto;
  user-select: none !important;
  -webkit-user-select: none !important;
  -moz-user-select: none !important;
  -ms-user-select: none !important;
  border-radius: 6px !important;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.08), 0 2px 6px rgba(0, 0, 0, 0.12) !important;
  padding: 3px 5px !important;
  font-size: 0.76rem !important;
  line-height: 1.25 !important;
  overflow: hidden !important;
  word-break: break-all !important;
  z-index: 10;
  box-sizing: border-box !important;
  transform: none !important;
}

.lecture-block:hover,
.lecture-block:hover div {
  transform: none !important;
  font-weight: 600 !important;
  text-shadow: 0 0 0.2px currentColor;
  z-index: 25;
}

.lecture-block:hover {
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.15), 0 3px 8px rgba(0, 0, 0, 0.18) !important;
}

[data-bs-theme="dark"] .lecture-block {
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.15), 0 2px 6px rgba(0, 0, 0, 0.4) !important;
}

[data-bs-theme="dark"] .lecture-block:hover {
  transform: none !important;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.3), 0 3px 10px rgba(0, 0, 0, 0.6) !important;
}

[data-bs-theme="dark"] .lecture-block:hover,
[data-bs-theme="dark"] .lecture-block:hover div {
  font-weight: 600 !important;
  text-shadow: 0 0 0.2px currentColor;
}

/* ------------------------------------------ */
/* 건물 간 이동 난이도 경고 시각 효과 규격    */
/* ------------------------------------------ */

/* ------------------------------------------ */
/* 이동 경고 강의 블록 최상단 z-index 레이어링 */
/* ------------------------------------------ */

.lecture-block.transit-warning {
  box-shadow: 0 0 0 2.5px #ffb703 !important;
  z-index: 35 !important;
}

.lecture-block.transit-danger {
  box-shadow: 0 0 0 2.5px #dc3545 !important;
  z-index: 40 !important;
  animation: pulseDangerBorder 1.5s infinite alternate;
}

.lecture-block.highlighted-lecture-block {
  z-index: 50 !important;
}

@keyframes pulseDangerBorder {
  0% { box-shadow: 0 0 0 2px #dc3545; }
  100% { box-shadow: 0 0 8px 3px rgba(220, 53, 69, 0.7); }
}

/* ------------------------------------------ */
/* 시간표 블록 ↔ 강의 목록 양방향 호버 효과  */
/* ------------------------------------------ */

.highlighted-course-item {
  background-color: rgba(13, 110, 253, 0.16) !important;
  border-left: 4px solid #0d6efd !important;
  transition: background-color 0.15s ease, border-left 0.15s ease;
}

[data-bs-theme="dark"] .highlighted-course-item {
  background-color: rgba(13, 110, 253, 0.32) !important;
  border-left: 4px solid #6ea8fe !important;
  transition: background-color 0.15s ease, border-left 0.15s ease;
}

.highlighted-course-row {
  background-color: rgba(13, 110, 253, 0.16) !important;
  outline: 1.5px solid #0d6efd !important;
  transition: background-color 0.15s ease;
}

[data-bs-theme="dark"] .highlighted-course-row {
  background-color: rgba(13, 110, 253, 0.32) !important;
  outline: 1.5px solid #6ea8fe !important;
  transition: background-color 0.15s ease;
}

.highlighted-lecture-block {
  outline: 2.5px solid #0d6efd !important;
  z-index: 30 !important;
  box-shadow: 0 0 12px rgba(13, 110, 253, 0.5) !important;
}

[data-bs-theme="dark"] .highlighted-lecture-block {
  outline: 2.5px solid #6ea8fe !important;
  z-index: 30 !important;
  box-shadow: 0 0 14px rgba(110, 168, 254, 0.6) !important;
}

/* ------------------------------------------ */
/* 현재 시간표 수강 목록 아이템 호버 애니메이션 */
/* ------------------------------------------ */

#currentTimetableCourseList {
  overflow-x: hidden !important;
}

#currentTimetableCourseList .list-group-item:not(.no-hover) {
  transition: background-color 0.15s ease, border-left-color 0.15s ease, box-shadow 0.15s ease !important;
  cursor: pointer;
  border-left: 3px solid transparent !important;
}

#currentTimetableCourseList .list-group-item:not(.no-hover):hover {
  background-color: rgba(13, 110, 253, 0.08) !important;
  border-left-color: #0d6efd !important;
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.04) !important;
}

[data-bs-theme="dark"] #currentTimetableCourseList .list-group-item:not(.no-hover):hover {
  background-color: rgba(13, 110, 253, 0.22) !important;
  border-left-color: #6ea8fe !important;
  box-shadow: inset 0 1px 4px rgba(0, 0, 0, 0.2) !important;
}

/* Empty Notice Placeholder No-Hover Rule */
.list-group-item.no-hover,
.list-group-item.no-hover:hover,
#currentTimetableCourseList .list-group-item.no-hover,
#currentTimetableCourseList .list-group-item.no-hover:hover {
  cursor: default !important;
  pointer-events: none !important;
  background-color: transparent !important;
  border-left: none !important;
  border-left-color: transparent !important;
  box-shadow: none !important;
  transform: none !important;
}

[data-bs-theme="dark"] .list-group-item.no-hover,
[data-bs-theme="dark"] .list-group-item.no-hover:hover,
[data-bs-theme="dark"] #currentTimetableCourseList .list-group-item.no-hover,
[data-bs-theme="dark"] #currentTimetableCourseList .list-group-item.no-hover:hover {
  cursor: default !important;
  pointer-events: none !important;
  background-color: transparent !important;
  border-left: none !important;
  border-left-color: transparent !important;
  box-shadow: none !important;
  transform: none !important;
}

/* ------------------------------------------ */
/* Dark Mode Typography & Component Polish    */
/* ------------------------------------------ */

[data-bs-theme="dark"] .text-dark { color: #f8f9fa !important; }
[data-bs-theme="dark"] .text-secondary { color: #cbd5e1 !important; }
[data-bs-theme="dark"] .text-muted { color: #94a3b8 !important; }
[data-bs-theme="dark"] .text-body { color: #f8f9fa !important; }

[data-bs-theme="dark"] #favoriteTimetableBtn.is-not-favorite {
  background-color: #252a34 !important;
  color: #ff6b81 !important;
  border-color: #ff6b81 !important;
  box-shadow: none;
}

[data-bs-theme="dark"] #favoriteTimetableBtn.is-not-favorite:hover {
  background-color: #3b2230 !important;
  color: #ff8597 !important;
  border-color: #ff8597 !important;
  box-shadow: 0 2px 6px rgba(255, 107, 129, 0.25);
}

[data-bs-theme="dark"] #favoriteTimetableBtn.is-favorite {
  background-color: #dc3545 !important;
  color: #ffffff !important;
  border-color: #dc3545 !important;
}

[data-bs-theme="dark"] #userMenuDropdown {
  background-color: #252a34 !important;
  color: #f8f9fa !important;
  border-color: #3f4756 !important;
}

[data-bs-theme="dark"] .user-name-text { color: #f8f9fa !important; }
[data-bs-theme="dark"] .user-dropdown-header-box { background-color: #1e2229 !important; border-bottom-color: #3f4756 !important; }
[data-bs-theme="dark"] .btn-group .btn-light,
[data-bs-theme="dark"] .btn-group .btn-outline-primary,
[data-bs-theme="dark"] .btn-group .btn-outline-secondary {
  background-color: #252a34 !important;
  color: #f8f9fa !important;
  border-color: #3f4756 !important;
}

[data-bs-theme="dark"] .btn-group .btn-check:checked + .btn,
[data-bs-theme="dark"] .btn-group .btn.active {
  background-color: #0d6efd !important;
  color: #ffffff !important;
  border-color: #0d6efd !important;
}

[data-bs-theme="dark"] .bg-light { background-color: #252a34 !important; color: #f8f9fa !important; }
[data-bs-theme="dark"] .modal-content { background-color: #1e2229 !important; color: #f8f9fa !important; border-color: #2d323c !important; }
[data-bs-theme="dark"] .dropdown-menu { background-color: #1e2229 !important; color: #f8f9fa !important; border-color: #2d323c !important; }
[data-bs-theme="dark"] .dropdown-item { color: #e9ecef !important; }
[data-bs-theme="dark"] .dropdown-item:hover { background-color: #2b303c !important; color: #ffffff !important; }

/* ------------------------------------------ */
/* 테마 토글 버튼 스타일                       */
/* ------------------------------------------ */

.theme-btn-light {
  background-color: #ffffff !important;
  color: #495057 !important;
  border: 1px solid #dee2e6 !important;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.08) !important;
  transition: all 0.15s ease-in-out !important;
}

.theme-btn-light:hover {
  background-color: #f8f9fa !important;
  color: #0d6efd !important;
  border-color: #0d6efd !important;
  transform: scale(1.06);
}

.theme-btn-dark {
  background-color: #252a34 !important;
  color: #ffc107 !important;
  border: 1px solid #3f4756 !important;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.35) !important;
  transition: all 0.15s ease-in-out !important;
}

.theme-btn-dark:hover {
  background-color: #2b303c !important;
  color: #ffe066 !important;
  border-color: #ffc107 !important;
  transform: scale(1.06);
}

/* ------------------------------------------ */
/* 모드 전환 시 색상 애니메이션 제거           */
/* ------------------------------------------ */

body,
.card,
.card-header,
.card-footer,
.table,
.timetable-grid th,
.timetable-grid td,
.course-table th,
.course-table td,
.list-group-item,
.form-select,
.form-control,
.nav-link,
.lecture-block,
.dropdown-menu {
  transition: background-color 0s, color 0s, border-color 0s !important;
}

/* ------------------------------------------ */
/* 필터 요소 마우스 호버 & 포커스 하이라이트    */
/* ------------------------------------------ */

.filter-group-container .form-select,
.filter-group-container .form-control,
#searchInput,
.form-select-sm,
.btn-group .btn {
  transition: border-color 0.15s ease, background-color 0.15s ease, box-shadow 0.15s ease !important;
}

.filter-group-container .form-select:hover,
.filter-group-container .form-control:hover,
#searchInput:hover,
.form-select-sm:hover,
.btn-group .btn:hover,
#searchInput:focus,
.filter-group-container .form-select:focus,
.filter-group-container .form-control:focus {
  border-color: #0d6efd !important;
  background-color: #f0f7ff !important;
  box-shadow: 0 0 0 2px rgba(13, 110, 253, 0.12) !important;
  outline: none !important;
}

[data-bs-theme="dark"] .filter-group-container .form-select:hover,
[data-bs-theme="dark"] .filter-group-container .form-control:hover,
[data-bs-theme="dark"] #searchInput:hover,
[data-bs-theme="dark"] .form-select-sm:hover,
[data-bs-theme="dark"] .btn-group .btn:hover,
[data-bs-theme="dark"] #searchInput:focus,
[data-bs-theme="dark"] .filter-group-container .form-select:focus,
[data-bs-theme="dark"] .filter-group-container .form-control:focus {
  border-color: #6ea8fe !important;
  background-color: #2b303c !important;
  box-shadow: 0 0 0 2px rgba(110, 168, 254, 0.2) !important;
  outline: none !important;
}

[data-bs-theme="dark"] #openLoginModalBtn {
  background-color: #252a34 !important;
  color: #6ea8fe !important;
  border-color: #3f4756 !important;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3) !important;
}

[data-bs-theme="dark"] #openLoginModalBtn:hover {
  background-color: #2b303c !important;
  color: #ffffff !important;
  border-color: #6ea8fe !important;
}


/* ==========================================================================
   Verified Mobile & PC Customizations (모바일 100% 맞춤 & PC 가로폭 제한)
   ========================================================================== */

/* PC 대형 화면 가로 폭 제한 */
.container-fluid {
  max-width: 1240px !important;
  margin-left: auto !important;
  margin-right: auto !important;
}

/* 학점 입력창 및 버튼 규격 */
#minCreditInput, #maxCreditInput {
  max-width: 42px !important;
  min-width: 36px !important;
  font-weight: 600;
}

#minCreditInput + .input-group-text {
  border-left: none !important;
  border-right: none !important;
}

#generateBtn {
  font-size: 0.82rem !important;
  white-space: nowrap !important;
}

/* 탭 헤더 우측 빈 공간 완전 제거 */
.card-header-tabs,
.nav.nav-tabs.card-header-tabs {
  width: 100% !important;
  margin: 0 !important;
  padding: 0 !important;
  display: flex !important;
  flex-wrap: nowrap !important;
  border-bottom: 1px solid var(--bs-border-color, #dee2e6) !important;
}

.card-header-tabs .nav-item {
  flex: 1 1 0px !important;
  width: 33.33333% !important;
  margin: 0 !important;
  padding: 0 !important;
}

.card-header-tabs .nav-link {
  width: 100% !important;
  margin: 0 !important;
  text-align: center !important;
  justify-content: center !important;
  border-radius: 0 !important;
}

.card-header-tabs .nav-item:first-child .nav-link {
  border-top-left-radius: 6px !important;
}

.card-header-tabs .nav-item:last-child .nav-link {
  border-top-right-radius: 6px !important;
}

/* 모바일 전용 반응형 스타일 모음 */
@media (max-width: 767.98px) {
  /* 1. 최상단 헤더 (제목 + 모드버튼 + 계정드롭다운) 1줄 고정 */
  .top-header-row {
    flex-wrap: nowrap !important;
    width: 100% !important;
    margin-bottom: 0.65rem !important;
  }

  .top-header-row h3 {
    font-size: 1.05rem !important;
    white-space: nowrap !important;
    margin-bottom: 0 !important;
  }

  .top-header-row h3 i {
    margin-right: 0.25rem !important;
  }

  #themeToggleBtn {
    width: 28px !important;
    height: 28px !important;
    min-height: 28px !important;
    font-size: 0.75rem !important;
    padding: 0 !important;
    flex-shrink: 0 !important;
  }

  #openLoginModalBtn,
  #userMenuDropdown {
    height: 28px !important;
    min-height: 28px !important;
    padding: 0.2rem 0.45rem !important;
    font-size: 0.75rem !important;
    line-height: 1.2 !important;
    flex-shrink: 0 !important;
  }

  #userMenuDropdown .user-name-text {
    max-width: 60px !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
    white-space: nowrap !important;
    display: inline-block !important;
    vertical-align: middle !important;
  }

  /* 2. 시간표 가로 스크롤 차단 & 100% 자동 분할 */
  .timetable-wrapper {
    overflow-x: hidden !important;
    width: 100% !important;
  }

  .timetable-grid {
    min-width: 0 !important;
    width: 100% !important;
    table-layout: fixed !important;
  }

  .timetable-grid th {
    padding: 3px 1px !important;
    font-size: 0.7rem !important;
    white-space: nowrap !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
  }

  .timetable-grid td {
    height: 32px !important;
    padding: 1px 1px !important;
    font-size: 0.65rem !important;
  }

  .lecture-block {
    padding: 1px 2px !important;
    font-size: 0.62rem !important;
    line-height: 1.1 !important;
    border-radius: 4px !important;
    overflow: hidden !important;
    word-break: break-all !important;
  }

  /* 3. 시간표 카드 헤더 컨트롤 우측 밀착 */
  .timetable-title-text {
    display: none !important;
  }

  .card-header {
    justify-content: flex-end !important;
    text-align: right !important;
  }

  .timetable-header-nav-container {
    width: 100% !important;
    justify-content: flex-end !important;
    align-items: center !important;
    margin-left: auto !important;
    gap: 0.35rem !important;
    text-align: right !important;
  }

  #prevCaseBtn,
  #nextCaseBtn {
    width: 28px !important;
    height: 28px !important;
    padding: 0 !important;
    font-size: 0.78rem !important;
    min-height: 28px !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    border-radius: 6px !important;
  }

  #caseIndexText {
    font-size: 0.76rem !important;
    padding-left: 0.35rem !important;
    padding-right: 0.35rem !important;
  }

  #favoriteTimetableBtn {
    padding: 0.25rem 0.5rem !important;
    font-size: 0.76rem !important;
    min-height: 28px !important;
    height: 28px !important;
    line-height: 1.2 !important;
  }

  /* 4. 모바일 수강 관리 탭 컨테이너 100% 동적 맞춤 & 미선택 안내 중앙정렬 */
  #courseListTabContent {
    min-height: auto !important;
    max-height: 280px !important;
    height: auto !important;
  }

  #courseListTabContent .tab-pane,
  #courseListTabContent .list-group {
    min-height: auto !important;
    height: auto !important;
  }

  #courseListTabContent .list-group-item.no-hover {
    min-height: 110px !important;
    padding-top: 1.25rem !important;
    padding-bottom: 1.25rem !important;
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    justify-content: center !important;
    font-size: 0.76rem !important;
    line-height: 1.35 !important;
  }

  #courseListTabContent .list-group-item.no-hover i {
    font-size: 1.2rem !important;
    margin-bottom: 0.35rem !important;
  }

  /* 모바일 전용 수강 목록 폰트 축소 (PC 영향 없음) */
  #courseListTabContent .list-group-item:not(.no-hover) {
    padding: 0.45rem 0.75rem !important;
    font-size: 0.8rem !important;
  }

  #courseListTabContent .list-group-item:not(.no-hover) strong {
    font-size: 0.83rem !important;
  }

  #courseListTabContent .list-group-item:not(.no-hover) .small,
  #courseListTabContent .list-group-item:not(.no-hover) small {
    font-size: 0.73rem !important;
  }

  #courseListTabContent .list-group-item:not(.no-hover) .btn {
    padding: 0.2rem 0.45rem !important;
    font-size: 0.73rem !important;
    line-height: 1.2 !important;
  }

  /* 5. 학점 표출 뱃지 모바일 크기 */
  #currentCombinationTotalCredits {
    display: inline-block !important;
    text-align: center !important;
    line-height: 1.25 !important;
    padding: 0.25rem 0.5rem !important;
    white-space: normal !important;
    font-size: 0.78rem !important;
  }

  #currentCombinationTotalCredits strong {
    font-size: 0.85rem !important;
  }

  #currentCombinationTotalCredits small {
    display: block !important;
    margin-left: 0 !important;
    font-size: 0.68rem !important;
    margin-top: 1px !important;
    opacity: 0.85 !important;
  }

  /* 6. 모바일 필터 조작 버튼 & 카테고리 1줄 분할 */
  .filter-actions-row .btn,
  .filter-actions-row .form-check-label,
  #mainCategoryToggle .btn,
  .category-label-text {
    white-space: nowrap !important;
    word-break: keep-all !important;
  }

  .category-label-text {
    display: none !important;
  }

  #mainCategoryToggle {
    width: 100% !important;
    display: flex !important;
  }

  #mainCategoryToggle .btn {
    flex: 1 1 0px !important;
    padding: 0.45rem 0.2rem !important;
    font-size: 0.8rem !important;
    text-align: center !important;
    justify-content: center !important;
  }
}


/* ------------------------------------------ */
/* 모바일 카테고리(교양/전공/대학원) 아이콘 숨김 */
/* ------------------------------------------ */

@media (max-width: 767.98px) {
  #mainCategoryToggle .btn i {
    display: none !important;
  }
}


/* ------------------------------------------ */
/* 모바일 카테고리 버튼 좌우 여백(Padding) 확충 */
/* ------------------------------------------ */

@media (max-width: 767.98px) {
  #mainCategoryToggle .btn {
    padding: 0.45rem 0.6rem !important;
    font-size: 0.8rem !important;
  }
}


/* ------------------------------------------ */
/* 강좌 목록 스티키 헤더 100% 불투명 차단 설정 */
/* ------------------------------------------ */

.course-table thead.sticky-top,
.course-table thead.sticky-top tr,
.course-table thead.sticky-top th {
  position: sticky !important;
  top: 0 !important;
  z-index: 20 !important;
  background-color: #ffffff !important;
  background-clip: padding-box !important;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08) !important;
}

[data-bs-theme="dark"] .course-table thead.sticky-top,
[data-bs-theme="dark"] .course-table thead.sticky-top tr,
[data-bs-theme="dark"] .course-table thead.sticky-top th {
  background-color: #1e2530 !important;
  color: #f1f5f9 !important;
  border-bottom: 2px solid #2d3748 !important;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3) !important;
}


/* ------------------------------------------ */
/* 모바일 필터 조작 버튼 및 스위치 우측 정렬 */
/* ------------------------------------------ */

@media (max-width: 767.98px) {
  .filter-actions-row {
    width: 100% !important;
    justify-content: flex-end !important;
    text-align: right !important;
    margin-left: auto !important;
    gap: 0.4rem !important;
  }

  .filter-actions-row #addAllFilteredBtn {
    flex: 0 0 auto !important;
    order: unset !important;
    margin-top: 0 !important;
  }

  .filter-actions-row #resetSearchBtn {
    flex: 0 0 auto !important;
    order: unset !important;
  }

  .filter-actions-row .form-check.form-switch {
    order: unset !important;
    margin-right: 0 !important;
  }
}


/* ------------------------------------------ */
/* 모바일 시간표 강의 블록 시간정보 숨김     */
/* ------------------------------------------ */

@media (max-width: 767.98px) {
  .lecture-block .block-time-text {
    display: none !important;
  }
}