.timetable-tool-section {
  --tt-navy: #17243a;
  --tt-blue: #1f4e6f;
  --tt-green: #2c7a6e;
  --tt-orange: #e28c5f;
  --tt-cream: #fff7e9;
  --tt-border: rgba(31, 78, 111, 0.12);
}

.timetable-shell {
  width: min(78rem, calc(100% - 2rem));
  margin: 0 auto;
}

.timetable-studio {
  display: grid;
  gap: 0.75rem;
  min-height: 34rem;
  padding: 0.9rem;
  background:
    radial-gradient(circle at 1px 1px, rgba(31, 78, 111, 0.055) 1px, transparent 0) 0 0 / 22px 22px,
    linear-gradient(145deg, #f8fbfa, #fffaf2);
  border: 1px solid var(--tt-border);
  border-radius: 1rem;
  box-shadow: 0 24px 64px rgba(23, 36, 58, 0.12);
}

.timetable-studio-head,
.timetable-card-head,
.timetable-head-actions,
.timetable-view-toolbar,
.timetable-personal-toolbar,
.timetable-substitution-controls,
.timetable-generate-bar {
  display: flex;
  align-items: center;
}

.timetable-studio-head {
  justify-content: space-between;
  gap: 1rem;
  padding: 0.8rem;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--tt-border);
  border-radius: 0.85rem;
}

.timetable-studio-head h3,
.timetable-studio-head p,
.timetable-card-head h4,
.timetable-card-head p {
  margin: 0;
}

.timetable-studio-head h3 {
  margin-top: 0.18rem;
  color: var(--tt-navy);
  font-size: 1.08rem;
}

.timetable-studio-head p {
  margin-top: 0.18rem;
  color: var(--muted);
  font-size: 0.72rem;
}

.timetable-head-actions {
  justify-content: flex-end;
  gap: 0.45rem;
}

.timetable-head-actions small {
  color: var(--muted);
  font-size: 0.65rem;
  font-weight: 850;
}

.timetable-tabs {
  position: sticky;
  top: 0.45rem;
  z-index: 20;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.25rem;
  width: min(43rem, 100%);
  margin: 0 auto;
  padding: 0.28rem;
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid var(--tt-border);
  border-radius: 0.8rem;
  box-shadow: 0 12px 30px rgba(23, 36, 58, 0.1);
  backdrop-filter: blur(12px);
}

.timetable-tabs button,
.timetable-view-switch button {
  min-height: 2.25rem;
  padding: 0.42rem 0.65rem;
  color: var(--muted);
  background: transparent;
  border: 0;
  border-radius: 0.58rem;
  font: inherit;
  font-size: 0.72rem;
  font-weight: 950;
  cursor: pointer;
}

.timetable-tabs button.is-active,
.timetable-view-switch button.is-active {
  color: #fff;
  background: linear-gradient(135deg, var(--tt-green), var(--tt-blue));
  box-shadow: 0 8px 18px rgba(44, 122, 110, 0.18);
}

.timetable-panel {
  display: grid;
  gap: 0.8rem;
}

.timetable-panel.tools-hidden {
  display: none;
}

.timetable-setup-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.timetable-config-card,
.timetable-substitution-history {
  display: grid;
  align-content: start;
  gap: 0.65rem;
  padding: 0.85rem;
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid var(--tt-border);
  border-radius: 0.9rem;
  box-shadow: 0 12px 30px rgba(23, 36, 58, 0.055);
}

.timetable-basic-settings {
  grid-column: 1 / -1;
}

.timetable-card-head {
  justify-content: space-between;
  gap: 0.75rem;
}

.timetable-card-head span {
  display: block;
  color: var(--tt-orange);
  font-size: 0.62rem;
  font-weight: 950;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.timetable-card-head h4 {
  margin-top: 0.15rem;
  color: var(--tt-navy);
  font-size: 0.88rem;
}

.timetable-card-head p {
  margin-top: 0.18rem;
  color: var(--muted);
  font-size: 0.68rem;
  line-height: 1.4;
}

.timetable-card-head > b {
  display: grid;
  min-width: 2rem;
  height: 2rem;
  place-items: center;
  padding: 0 0.45rem;
  color: var(--tt-green);
  background: rgba(44, 122, 110, 0.09);
  border-radius: 0.6rem;
  font-size: 0.72rem;
}

.timetable-form-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.55rem;
}

.timetable-form-grid label,
.timetable-requirement-form label,
.timetable-rule-form label,
.timetable-subject-scope-head label,
.timetable-view-toolbar label,
.timetable-personal-toolbar label,
.timetable-substitution-controls label {
  display: grid;
  gap: 0.28rem;
  color: var(--tt-navy);
  font-size: 0.67rem;
  font-weight: 900;
}

.timetable-form-grid input,
.timetable-requirement-form input,
.timetable-requirement-form select,
.timetable-rule-form input,
.timetable-rule-form select,
.timetable-subject-scope-head select,
.timetable-view-toolbar select,
.timetable-personal-toolbar input,
.timetable-personal-toolbar select,
.timetable-substitution-controls input,
.timetable-substitution-controls select {
  width: 100%;
  min-height: 2.25rem;
  padding: 0.42rem 0.55rem;
  color: var(--tt-navy);
  background: #fff;
  border: 1px solid rgba(31, 78, 111, 0.14);
  border-radius: 0.62rem;
  font: inherit;
  font-size: 0.72rem;
}

.timetable-form-grid input:focus,
.timetable-requirement-form input:focus,
.timetable-requirement-form select:focus,
.timetable-rule-form input:focus,
.timetable-rule-form select:focus,
.timetable-subject-scope-head select:focus {
  outline: 3px solid rgba(44, 122, 110, 0.12);
  border-color: var(--tt-green);
}

.timetable-working-days {
  display: grid;
  gap: 0.35rem;
}

.timetable-working-days > span {
  color: var(--tt-navy);
  font-size: 0.67rem;
  font-weight: 900;
}

#timetableWorkingDays {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.timetable-day-choice {
  position: relative;
}

.timetable-day-choice input {
  position: absolute;
  opacity: 0;
}

.timetable-day-choice span {
  display: grid;
  min-width: 3.25rem;
  min-height: 2rem;
  place-items: center;
  color: var(--muted);
  background: #f8fafc;
  border: 1px solid rgba(31, 78, 111, 0.11);
  border-radius: 0.58rem;
  font-size: 0.66rem;
  font-weight: 900;
  cursor: pointer;
}

.timetable-day-choice input:checked + span {
  color: #fff;
  background: var(--tt-green);
  border-color: var(--tt-green);
}

.timetable-quick-add {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.4rem;
}

.timetable-subject-add {
  grid-template-columns: minmax(0, 1fr) 2.4rem auto;
}

.timetable-quick-add input {
  min-width: 0;
  min-height: 2.25rem;
  padding: 0.42rem 0.55rem;
  color: var(--tt-navy);
  background: #fff;
  border: 1px solid rgba(31, 78, 111, 0.14);
  border-radius: 0.62rem;
  font: inherit;
  font-size: 0.72rem;
}

.timetable-subject-add input[type="color"] {
  padding: 0.18rem;
}

.timetable-quick-add button {
  min-width: 3.6rem;
  padding: 0.4rem 0.65rem;
  color: #fff;
  background: var(--tt-green);
  border: 0;
  border-radius: 0.62rem;
  font: inherit;
  font-size: 0.7rem;
  font-weight: 950;
  cursor: pointer;
}

.timetable-entity-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.38rem;
  min-height: 2.2rem;
}

.timetable-entity-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  min-height: 1.9rem;
  padding: 0.28rem 0.35rem 0.28rem 0.55rem;
  color: var(--tt-navy);
  background: #f8fafc;
  border: 1px solid rgba(31, 78, 111, 0.1);
  border-radius: 999px;
  font-size: 0.68rem;
  font-weight: 850;
}

.timetable-entity-chip i {
  width: 0.65rem;
  height: 0.65rem;
  background: var(--chip-color, var(--tt-green));
  border-radius: 50%;
}

.timetable-entity-chip.is-main-subject {
  color: #78350f;
  background: linear-gradient(135deg, #fff7d6, #fff);
  border-color: rgba(217, 119, 6, 0.28);
  box-shadow: inset 0 0 0 1px rgba(251, 191, 36, 0.1);
}

.timetable-main-marker {
  width: auto !important;
  min-width: 2.6rem;
  padding: 0 0.45rem !important;
  color: #8a4b08 !important;
  background: #fff7d6 !important;
  border: 1px solid rgba(217, 119, 6, 0.2) !important;
  border-radius: 999px !important;
  font-size: 0.58rem !important;
  font-weight: 950;
}

.timetable-main-marker.is-active {
  color: #fff !important;
  background: #d97706 !important;
}

.timetable-entity-chip button {
  display: grid;
  width: 1.25rem;
  height: 1.25rem;
  place-items: center;
  padding: 0;
  color: #991b1b;
  background: #fff;
  border: 0;
  border-radius: 50%;
  font-size: 0.85rem;
  cursor: pointer;
}

.timetable-main-daily-rule {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: start;
  gap: 0.55rem;
  padding: 0.65rem;
  color: var(--tt-navy);
  background: linear-gradient(135deg, rgba(255, 247, 214, 0.86), rgba(255, 255, 255, 0.95));
  border: 1px solid rgba(217, 119, 6, 0.18);
  border-radius: 0.72rem;
  cursor: pointer;
}

.timetable-main-daily-rule input {
  width: 1rem;
  height: 1rem;
  margin-top: 0.1rem;
  accent-color: #d97706;
}

.timetable-main-daily-rule strong,
.timetable-main-daily-rule small {
  display: block;
}

.timetable-main-daily-rule strong {
  font-size: 0.68rem;
}

.timetable-main-daily-rule small {
  margin-top: 0.16rem;
  color: var(--muted);
  font-size: 0.58rem;
  line-height: 1.35;
}

.timetable-list-empty,
.timetable-empty-state {
  padding: 0.8rem;
  color: var(--muted);
  background: rgba(255, 247, 233, 0.68);
  border: 1px dashed rgba(31, 78, 111, 0.16);
  border-radius: 0.75rem;
  font-size: 0.7rem;
  font-weight: 800;
}

.timetable-requirements-card {
  gap: 0.75rem;
}

.timetable-rules-card {
  gap: 0.8rem;
}

.timetable-import-card {
  gap: 0.75rem;
}

.timetable-template-download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.15rem;
  text-decoration: none;
  white-space: nowrap;
}

.timetable-excel-upload {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 0.75rem;
  min-height: 5.2rem;
  padding: 0.8rem;
  color: var(--tt-navy);
  background:
    linear-gradient(135deg, rgba(44, 122, 110, 0.08), rgba(255, 247, 233, 0.78));
  border: 1.5px dashed rgba(44, 122, 110, 0.34);
  border-radius: 0.82rem;
  cursor: pointer;
  transition: border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.timetable-excel-upload:hover,
.timetable-excel-upload.is-dragging {
  border-color: var(--tt-green);
  box-shadow: 0 12px 28px rgba(44, 122, 110, 0.12);
  transform: translateY(-1px);
}

.timetable-excel-upload input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.timetable-excel-icon {
  display: grid;
  width: 2.85rem;
  height: 2.85rem;
  place-items: center;
  color: #fff;
  background: linear-gradient(145deg, #15834f, #0d633b);
  border-radius: 0.7rem;
  box-shadow: 0 10px 22px rgba(13, 99, 59, 0.2);
  font-size: 1rem;
  font-weight: 1000;
}

.timetable-excel-upload strong,
.timetable-excel-upload small {
  display: block;
}

.timetable-excel-upload strong {
  font-size: 0.78rem;
}

.timetable-excel-upload small {
  margin-top: 0.18rem;
  color: var(--muted);
  font-size: 0.65rem;
  line-height: 1.4;
}

.timetable-import-preview {
  display: grid;
  gap: 0.6rem;
  padding: 0.72rem;
  color: var(--tt-navy);
  background: #f8fbfa;
  border: 1px solid rgba(44, 122, 110, 0.16);
  border-radius: 0.75rem;
}

.timetable-import-preview.tools-hidden {
  display: none;
}

.timetable-import-preview strong,
.timetable-import-preview span {
  display: block;
}

.timetable-import-preview strong {
  font-size: 0.75rem;
}

.timetable-import-preview span {
  margin-top: 0.15rem;
  color: var(--muted);
  font-size: 0.65rem;
}

.timetable-import-preview ul {
  display: grid;
  gap: 0.22rem;
  max-height: 8rem;
  margin: 0;
  padding: 0 0 0 1.1rem;
  overflow-y: auto;
  color: #9a431f;
  font-size: 0.64rem;
  line-height: 1.4;
}

.timetable-import-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.45rem;
}

.timetable-rule-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.65rem;
}

.timetable-rule-block {
  display: grid;
  align-content: start;
  gap: 0.65rem;
  padding: 0.75rem;
  background: linear-gradient(145deg, #fbfdfc, #fffaf3);
  border: 1px solid rgba(31, 78, 111, 0.1);
  border-radius: 0.78rem;
}

.timetable-common-rule-block {
  grid-column: 1 / -1;
}

.timetable-rule-heading strong,
.timetable-rule-heading span {
  display: block;
}

.timetable-rule-heading strong {
  color: var(--tt-navy);
  font-size: 0.78rem;
}

.timetable-rule-heading span {
  margin-top: 0.18rem;
  color: var(--muted);
  font-size: 0.64rem;
  line-height: 1.42;
}

.timetable-rule-form {
  display: grid;
  align-items: end;
  gap: 0.42rem;
}

.timetable-class-teacher-form {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.timetable-class-teacher-form button {
  min-height: 2.25rem;
}

.timetable-common-period-form {
  grid-template-columns: 1.35fr repeat(4, minmax(0, 0.72fr)) auto;
}

.timetable-common-period-form input[type="color"] {
  padding: 0.18rem;
}

.timetable-subject-scope-head,
.timetable-subject-teacher-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 0.45rem;
}

.timetable-subject-scope-options,
.timetable-subject-teacher-options {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.35rem;
  min-height: 2.25rem;
}

.timetable-subject-scope-choice,
.timetable-subject-teacher-choice {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  min-width: 0;
  padding: 0.42rem 0.5rem;
  color: var(--tt-navy);
  background: #fff;
  border: 1px solid rgba(31, 78, 111, 0.1);
  border-radius: 0.56rem;
  font-size: 0.65rem;
  font-weight: 850;
}

.timetable-subject-scope-choice input,
.timetable-subject-teacher-choice input {
  width: 0.85rem;
  height: 0.85rem;
  margin: 0;
  accent-color: var(--tt-green);
}

.timetable-subject-scope-choice span,
.timetable-subject-teacher-choice span {
  min-width: 0;
  overflow-wrap: anywhere;
}

.timetable-rule-list {
  display: grid;
  gap: 0.35rem;
}

.timetable-rule-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.5rem;
  min-height: 2.35rem;
  padding: 0.45rem 0.52rem;
  color: var(--tt-navy);
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(31, 78, 111, 0.09);
  border-radius: 0.62rem;
  font-size: 0.66rem;
  line-height: 1.35;
}

.timetable-rule-item strong {
  display: block;
  font-size: 0.69rem;
}

.timetable-rule-item span {
  color: var(--muted);
}

.timetable-rule-item button {
  display: grid;
  width: 1.55rem;
  height: 1.55rem;
  place-items: center;
  padding: 0;
  color: #991b1b;
  background: #fff;
  border: 1px solid rgba(153, 27, 27, 0.14);
  border-radius: 0.45rem;
  font: inherit;
  font-size: 0.9rem;
  font-weight: 950;
  cursor: pointer;
}

.timetable-rule-empty {
  padding: 0.55rem;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.72);
  border: 1px dashed rgba(31, 78, 111, 0.13);
  border-radius: 0.6rem;
  font-size: 0.64rem;
  font-weight: 800;
}

.timetable-requirement-form {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 0.7fr 0.8fr 0.9fr auto;
  align-items: end;
  gap: 0.45rem;
}

.timetable-requirement-classbar {
  display: grid;
  grid-template-columns: minmax(11rem, 0.35fr) minmax(0, 1fr);
  align-items: end;
  gap: 0.65rem;
}

.timetable-requirement-classbar label {
  display: grid;
  gap: 0.28rem;
  color: var(--tt-navy);
  font-size: 0.67rem;
  font-weight: 900;
}

.timetable-requirement-classbar select,
.timetable-requirement-grid select,
.timetable-requirement-grid input[type="number"] {
  width: 100%;
  min-width: 0;
  min-height: 2.2rem;
  padding: 0.4rem 0.5rem;
  color: var(--tt-navy);
  background: #fff;
  border: 1px solid rgba(31, 78, 111, 0.14);
  border-radius: 0.56rem;
  font: inherit;
  font-size: 0.68rem;
}

.timetable-requirement-classbar select:focus,
.timetable-requirement-grid select:focus,
.timetable-requirement-grid input[type="number"]:focus {
  outline: 3px solid rgba(44, 122, 110, 0.12);
  border-color: var(--tt-green);
}

.timetable-selected-capacity {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.35rem;
  min-height: 2.2rem;
  padding: 0.38rem;
  color: var(--tt-navy);
  background: #f8fafc;
  border: 1px solid rgba(31, 78, 111, 0.1);
  border-radius: 0.65rem;
  font-size: 0.64rem;
  font-weight: 800;
}

.timetable-capacity-metric {
  display: grid;
  align-content: center;
  min-width: 0;
  padding: 0.35rem 0.42rem;
  background: #fff;
  border-radius: 0.48rem;
  text-align: center;
}

.timetable-capacity-metric strong,
.timetable-capacity-metric span {
  display: block;
}

.timetable-capacity-metric strong {
  color: var(--tt-blue);
  font-size: 0.78rem;
}

.timetable-capacity-metric span {
  margin-top: 0.08rem;
  color: var(--muted);
  font-size: 0.58rem;
}

.timetable-capacity-metric.is-complete strong {
  color: var(--tt-green);
}

.timetable-capacity-metric.is-warning strong {
  color: #b45309;
}

.timetable-capacity-metric.is-over strong {
  color: #b91c1c;
}

.timetable-requirement-grid-wrap {
  overflow: hidden;
  border: 1px solid rgba(31, 78, 111, 0.11);
  border-radius: 0.78rem;
}

.timetable-requirement-grid {
  display: grid;
  gap: 0;
}

.timetable-requirement-grid-head,
.timetable-requirement-grid-row {
  display: grid;
  grid-template-columns: minmax(8rem, 1.25fr) minmax(10rem, 1.3fr) minmax(6rem, 0.65fr) minmax(6rem, 0.68fr) minmax(5.5rem, 0.62fr);
  align-items: center;
  gap: 0;
}

.timetable-requirement-grid-head {
  color: #fff;
  background: var(--tt-blue);
  font-size: 0.62rem;
  font-weight: 950;
  text-align: center;
}

.timetable-requirement-grid-head span {
  min-width: 0;
  padding: 0.55rem 0.45rem;
  border-right: 1px solid rgba(255, 255, 255, 0.2);
  line-height: 1.25;
}

.timetable-requirement-grid-row {
  min-height: 3.25rem;
  background: #fff;
  border-top: 1px solid rgba(31, 78, 111, 0.08);
}

.timetable-requirement-grid-row:nth-child(odd) {
  background: #fbfdfc;
}

.timetable-requirement-grid-row.is-class-teacher {
  background: linear-gradient(90deg, rgba(44, 122, 110, 0.1), rgba(255, 255, 255, 0.94));
  box-shadow: inset 0.24rem 0 var(--tt-green);
}

.timetable-requirement-grid-cell {
  min-width: 0;
  padding: 0.42rem;
  border-right: 1px solid rgba(31, 78, 111, 0.07);
}

.timetable-requirement-subject strong,
.timetable-requirement-subject small {
  display: block;
}

.timetable-requirement-subject strong {
  color: var(--tt-navy);
  font-size: 0.7rem;
  overflow-wrap: anywhere;
}

.timetable-inline-main {
  display: inline-block;
  margin-left: 0.2rem;
  padding: 0.08rem 0.3rem;
  color: #fff;
  background: #d97706;
  border-radius: 999px;
  font-size: 0.48rem;
  line-height: 1.2;
  vertical-align: 0.1rem;
}

.timetable-requirement-subject small {
  margin-top: 0.14rem;
  color: var(--muted);
  font-size: 0.58rem;
  line-height: 1.3;
}

.timetable-locked-teacher {
  display: grid;
  min-height: 2.2rem;
  align-content: center;
  padding: 0.38rem 0.5rem;
  color: var(--tt-green);
  background: rgba(44, 122, 110, 0.08);
  border: 1px solid rgba(44, 122, 110, 0.16);
  border-radius: 0.56rem;
  font-size: 0.67rem;
  font-weight: 900;
  overflow-wrap: anywhere;
}

.timetable-requirement-period-cell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.3rem;
}

.timetable-fixed-minimum {
  color: var(--tt-green);
  font-size: 0.56rem;
  font-weight: 950;
  white-space: nowrap;
}

.timetable-grid-check {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.3rem;
  color: var(--tt-navy);
  font-size: 0.62rem;
  font-weight: 850;
}

.timetable-grid-check input {
  width: 0.88rem;
  height: 0.88rem;
  margin: 0;
  accent-color: var(--tt-green);
}

.timetable-requirement-status {
  display: inline-flex;
  justify-content: center;
  width: 100%;
  padding: 0.3rem 0.38rem;
  color: var(--muted);
  background: #f1f5f9;
  border-radius: 999px;
  font-size: 0.57rem;
  font-weight: 950;
  text-align: center;
}

.timetable-requirement-status.is-ready {
  color: #166534;
  background: #dcfce7;
}

.timetable-requirement-status.is-needed {
  color: #9a431f;
  background: #fff0e7;
}

.timetable-requirement-status.is-invalid {
  color: #991b1b;
  background: #fee2e2;
}

.timetable-requirement-summary-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.65rem;
}

.timetable-requirement-summary-grid > section {
  display: grid;
  align-content: start;
  gap: 0.42rem;
  min-width: 0;
  padding: 0.68rem;
  background: #f8fafc;
  border: 1px solid rgba(31, 78, 111, 0.09);
  border-radius: 0.68rem;
}

.timetable-summary-label {
  color: var(--tt-navy);
  font-size: 0.65rem;
  font-weight: 950;
}

.timetable-subject-period-totals,
.timetable-class-capacity-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.timetable-subject-total {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  min-height: 1.8rem;
  padding: 0.3rem 0.46rem;
  color: var(--tt-navy);
  background: #fff;
  border: 1px solid rgba(31, 78, 111, 0.09);
  border-radius: 999px;
  font-size: 0.61rem;
  font-weight: 850;
}

.timetable-subject-total i {
  width: 0.55rem;
  height: 0.55rem;
  background: var(--subject-total-color, var(--tt-green));
  border-radius: 50%;
}

.timetable-class-capacity {
  display: grid;
  min-width: 8.5rem;
  gap: 0.12rem;
  padding: 0.4rem 0.48rem;
  color: var(--tt-navy);
  background: #fff;
  border: 1px solid rgba(31, 78, 111, 0.09);
  border-radius: 0.58rem;
  font-size: 0.61rem;
  font-weight: 850;
}

.timetable-class-capacity span {
  color: var(--muted);
  font-size: 0.56rem;
}

.timetable-class-capacity.is-complete {
  border-color: rgba(44, 122, 110, 0.3);
  box-shadow: inset 0.2rem 0 var(--tt-green);
}

.timetable-class-capacity.is-over {
  color: #991b1b;
  background: #fff5f5;
  border-color: rgba(185, 28, 28, 0.25);
  box-shadow: inset 0.2rem 0 #b91c1c;
}

.timetable-class-capacity.is-under {
  border-color: rgba(226, 140, 95, 0.24);
  box-shadow: inset 0.2rem 0 var(--tt-orange);
}

.timetable-inline-check {
  display: inline-flex !important;
  grid-template-columns: auto 1fr;
  align-items: center;
  min-height: 2.25rem;
  gap: 0.4rem !important;
}

.timetable-inline-check input {
  width: 0.9rem;
  height: 0.9rem;
  min-height: auto;
  margin: 0;
  accent-color: var(--tt-green);
}

.timetable-requirement-list {
  display: grid;
  gap: 0.4rem;
}

.timetable-requirement-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 0.75fr 0.75fr auto;
  align-items: center;
  gap: 0.45rem;
  min-height: 2.7rem;
  padding: 0.48rem 0.6rem;
  color: var(--tt-navy);
  background: #f8fafc;
  border: 1px solid rgba(31, 78, 111, 0.08);
  border-radius: 0.68rem;
  font-size: 0.68rem;
}

.timetable-requirement-row b {
  overflow-wrap: anywhere;
}

.timetable-requirement-row button,
.timetable-period-card button {
  min-width: 1.65rem;
  height: 1.65rem;
  padding: 0;
  color: #991b1b;
  background: #fff;
  border: 1px solid rgba(153, 27, 27, 0.15);
  border-radius: 0.48rem;
  font: inherit;
  font-weight: 950;
  cursor: pointer;
}

.timetable-generate-bar {
  position: sticky;
  bottom: 0.7rem;
  z-index: 15;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.8rem;
  color: #fff;
  background: linear-gradient(135deg, rgba(23, 36, 58, 0.96), rgba(31, 78, 111, 0.96));
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 0.85rem;
  box-shadow: 0 18px 42px rgba(23, 36, 58, 0.25);
  backdrop-filter: blur(12px);
}

.timetable-generate-bar strong,
.timetable-generate-bar span {
  display: block;
}

.timetable-generate-bar strong {
  font-size: 0.82rem;
}

.timetable-generate-bar span {
  margin-top: 0.12rem;
  color: #dbeafe;
  font-size: 0.67rem;
}

.timetable-view-toolbar,
.timetable-personal-toolbar,
.timetable-substitution-controls {
  flex-wrap: wrap;
  gap: 0.55rem;
  padding: 0.7rem;
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid var(--tt-border);
  border-radius: 0.85rem;
}

.timetable-view-switch {
  display: inline-flex;
  gap: 0.18rem;
  padding: 0.2rem;
  background: #edf3f4;
  border-radius: 0.6rem;
}

.timetable-view-toolbar label,
.timetable-personal-toolbar label,
.timetable-substitution-controls label {
  min-width: 10rem;
}

.timetable-grid-wrap {
  overflow: auto;
  padding: 0.4rem;
  background: #fff;
  border: 1px solid var(--tt-border);
  border-radius: 0.9rem;
  box-shadow: 0 14px 36px rgba(23, 36, 58, 0.07);
}

.timetable-grid {
  width: 100%;
  min-width: 720px;
  border-collapse: separate;
  border-spacing: 0.35rem;
}

.timetable-grid th {
  padding: 0.58rem;
  color: var(--tt-blue);
  background: #edf5f3;
  border-radius: 0.55rem;
  font-size: 0.68rem;
  font-weight: 950;
}

.timetable-grid td {
  min-width: 7.5rem;
  height: 5rem;
  padding: 0.25rem;
  vertical-align: top;
  background: #f8fafc;
  border: 1px solid rgba(31, 78, 111, 0.075);
  border-radius: 0.65rem;
}

.timetable-grid .timetable-time-cell {
  min-width: 5.8rem;
  padding: 0.55rem;
  color: var(--muted);
  background: #fffaf2;
  font-size: 0.64rem;
  font-weight: 900;
  text-align: center;
}

.timetable-period-card {
  position: relative;
  display: grid;
  align-content: start;
  gap: 0.14rem;
  min-height: 4.35rem;
  padding: 0.5rem;
  color: var(--tt-navy);
  background: color-mix(in srgb, var(--subject-color, var(--tt-green)) 11%, white);
  border: 1px solid color-mix(in srgb, var(--subject-color, var(--tt-green)) 30%, white);
  border-left: 0.3rem solid var(--subject-color, var(--tt-green));
  border-radius: 0.55rem;
}

.timetable-period-card.is-locked {
  box-shadow: 0 0 0 2px rgba(226, 140, 95, 0.28);
}

.timetable-period-card.is-fixed-rule {
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--subject-color, var(--tt-green)) 16%, white), #fff);
  border-style: solid;
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--subject-color, var(--tt-green)) 22%, transparent);
}

.timetable-period-card strong {
  padding-right: 1.45rem;
  font-size: 0.71rem;
  line-height: 1.25;
}

.timetable-period-card span,
.timetable-period-card small {
  color: var(--muted);
  font-size: 0.6rem;
  line-height: 1.3;
}

.timetable-period-card button {
  position: absolute;
  top: 0.28rem;
  right: 0.28rem;
  color: var(--tt-blue);
  border-color: rgba(31, 78, 111, 0.12);
}

.timetable-free-period {
  display: grid;
  min-height: 4.35rem;
  place-items: center;
  color: #94a3b8;
  font-size: 0.62rem;
  font-weight: 850;
}

.timetable-break-row td {
  height: auto;
  padding: 0.45rem;
  color: var(--tt-orange);
  background: #fff0e7;
  border: 1px dashed rgba(226, 140, 95, 0.3);
  font-size: 0.65rem;
  font-weight: 950;
  text-align: center;
}

.timetable-master-grid td {
  height: 4.4rem;
}

.timetable-generation-report {
  padding: 0.72rem;
  color: var(--tt-green);
  background: #e9f7f2;
  border: 1px solid rgba(44, 122, 110, 0.18);
  border-radius: 0.75rem;
  font-size: 0.72rem;
  font-weight: 850;
  line-height: 1.45;
}

.timetable-generation-report.has-warning {
  color: #9a431f;
  background: #fff0e7;
  border-color: rgba(226, 140, 95, 0.28);
}

.timetable-substitution-list,
#timetableSubstitutionHistory {
  display: grid;
  gap: 0.48rem;
}

.timetable-substitution-row,
.timetable-substitution-record {
  display: grid;
  grid-template-columns: 0.65fr 1fr 1fr 1.2fr auto;
  align-items: center;
  gap: 0.5rem;
  padding: 0.62rem;
  color: var(--tt-navy);
  background: #fff;
  border: 1px solid var(--tt-border);
  border-radius: 0.72rem;
  font-size: 0.68rem;
}

.timetable-substitution-row select {
  min-height: 2.1rem;
  padding: 0.38rem 0.48rem;
  color: var(--tt-navy);
  background: #f8fafc;
  border: 1px solid var(--tt-border);
  border-radius: 0.55rem;
  font: inherit;
  font-size: 0.68rem;
}

.timetable-substitution-row button {
  min-height: 2.1rem;
  padding: 0.38rem 0.58rem;
  color: #fff;
  background: var(--tt-green);
  border: 0;
  border-radius: 0.55rem;
  font: inherit;
  font-size: 0.66rem;
  font-weight: 900;
  cursor: pointer;
}

.timetable-substitution-record {
  grid-template-columns: 0.8fr 0.7fr 1fr 1fr 1fr;
  background: #f8fafc;
}

.timetable-mobile-note {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 0.65rem;
  padding: 0.75rem;
  color: var(--tt-navy);
  background: linear-gradient(135deg, #e9f7f2, #fff);
  border: 1px solid rgba(44, 122, 110, 0.16);
  border-radius: 0.8rem;
}

.timetable-mobile-note > span {
  display: grid;
  width: 2rem;
  height: 2rem;
  place-items: center;
  color: #fff;
  background: var(--tt-green);
  border-radius: 50%;
  font-size: 0.65rem;
}

.timetable-mobile-note strong,
.timetable-mobile-note p {
  margin: 0;
}

.timetable-mobile-note strong {
  font-size: 0.75rem;
}

.timetable-mobile-note p {
  margin-top: 0.15rem;
  color: var(--muted);
  font-size: 0.65rem;
  line-height: 1.4;
}

.timetable-status {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 110;
  max-width: 24rem;
  padding: 0.7rem 0.85rem;
  color: #fff;
  background: var(--tt-navy);
  border-radius: 0.72rem;
  box-shadow: 0 18px 44px rgba(23, 36, 58, 0.25);
  font-size: 0.72rem;
  font-weight: 850;
}

.timetable-status.is-error {
  background: #991b1b;
}

.timetable-status.tools-hidden {
  display: none;
}

.timetable-validation-modal {
  position: fixed;
  inset: 0;
  z-index: 220;
  display: grid;
  place-items: center;
  padding: 1rem;
  background: rgba(15, 23, 42, 0.64);
  backdrop-filter: blur(8px);
}

.timetable-validation-modal.tools-hidden {
  display: none;
}

.timetable-validation-dialog {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.75rem;
  width: min(100%, 34rem);
  max-height: min(80vh, 42rem);
  padding: 1rem;
  overflow: hidden;
  color: var(--tt-navy);
  background: #fff;
  border: 1px solid rgba(220, 38, 38, 0.2);
  border-radius: 1rem;
  box-shadow: 0 30px 90px rgba(15, 23, 42, 0.35);
}

.timetable-validation-icon {
  display: grid;
  width: 2.4rem;
  height: 2.4rem;
  place-items: center;
  color: #fff;
  background: #dc2626;
  border-radius: 50%;
  font-size: 1.2rem;
  font-weight: 950;
}

.timetable-validation-dialog span,
.timetable-validation-dialog h3,
.timetable-validation-dialog p {
  margin: 0;
}

.timetable-validation-dialog span {
  color: #b91c1c;
  font-size: 0.62rem;
  font-weight: 950;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.timetable-validation-dialog h3 {
  margin-top: 0.1rem;
  font-size: 1.05rem;
}

.timetable-validation-dialog p {
  margin-top: 0.2rem;
  color: var(--muted);
  font-size: 0.7rem;
}

.timetable-validation-dialog ul {
  grid-column: 1 / -1;
  display: grid;
  gap: 0.38rem;
  max-height: 48vh;
  margin: 0;
  padding: 0.7rem 0.7rem 0.7rem 1.8rem;
  overflow-y: auto;
  color: #7f1d1d;
  background: #fff7f7;
  border: 1px solid rgba(220, 38, 38, 0.12);
  border-radius: 0.7rem;
  font-size: 0.68rem;
  line-height: 1.45;
}

.timetable-validation-dialog button {
  grid-column: 1 / -1;
  justify-self: end;
}

@media (max-width: 980px) {
  .timetable-form-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .timetable-requirement-form {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .timetable-common-period-form {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .timetable-requirement-classbar,
  .timetable-requirement-summary-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .timetable-shell {
    width: min(100% - 1rem, 78rem);
  }

  .timetable-studio-head,
  .timetable-generate-bar {
    align-items: flex-start;
    flex-direction: column;
  }

  .timetable-head-actions {
    width: 100%;
    justify-content: flex-start;
    flex-wrap: wrap;
  }

  .timetable-import-card .timetable-card-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .timetable-template-download {
    width: 100%;
  }

  .timetable-tabs {
    top: 0.25rem;
    overflow-x: auto;
  }

  .timetable-tabs button {
    padding-inline: 0.35rem;
    font-size: 0.64rem;
  }

  .timetable-setup-grid,
  .timetable-form-grid,
  .timetable-requirement-form,
  .timetable-rule-grid,
  .timetable-class-teacher-form,
  .timetable-common-period-form {
    grid-template-columns: 1fr;
  }

  .timetable-basic-settings {
    grid-column: auto;
  }

  .timetable-common-rule-block {
    grid-column: auto;
  }

  .timetable-subject-scope-options {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .timetable-selected-capacity {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .timetable-requirement-grid-head {
    display: none;
  }

  .timetable-requirement-grid-row {
    grid-template-columns: 1fr;
    gap: 0.2rem;
    padding: 0.55rem;
  }

  .timetable-requirement-grid-cell {
    padding: 0.25rem 0;
    border-right: 0;
  }

  .timetable-requirement-grid-cell::before {
    display: block;
    margin-bottom: 0.18rem;
    color: var(--muted);
    content: attr(data-label);
    font-size: 0.56rem;
    font-weight: 950;
    text-transform: uppercase;
  }

  .timetable-generate-bar button {
    width: 100%;
  }

  .timetable-generate-bar {
    position: static;
  }

  .timetable-substitution-row,
  .timetable-substitution-record,
  .timetable-requirement-row {
    grid-template-columns: 1fr;
  }
}

@media print {
  body * {
    visibility: hidden;
  }

  #timetableGridWrap,
  #timetableGridWrap *,
  #timetablePersonalGrid,
  #timetablePersonalGrid * {
    visibility: visible;
  }

  #timetableGridWrap,
  #timetablePersonalGrid {
    position: absolute;
    inset: 0;
    overflow: visible;
    padding: 0;
    border: 0;
    box-shadow: none;
  }

  .timetable-period-card button {
    display: none;
  }
}