:root,
[data-theme="day"] {
  --navy: #102a43;
  --navy-soft: #334e68;
  --gold: #9a7b2f;
  --gold-soft: #f4efe3;
  --ink: #102a43;
  --muted: #627d98;
  --paper: #f5f7fa;
  --card: #ffffff;
  --line: #d9e2ec;
  --danger: #9b1d2a;
  --danger-bg: #fdecee;
  --ok: #147d64;
  --ok-bg: #e6f6f1;
  --shadow: 0 1px 2px rgba(16, 42, 67, 0.05), 0 10px 28px rgba(16, 42, 67, 0.06);
  --page-bg: linear-gradient(180deg, #eef2f6 0%, #f5f7fa 36%, #f5f7fa 100%);
  --heading: #102a43;
  --input-bg: #fff;
  --chip-muted: #f0f4f8;
  --table-line: #e4ebf2;
  --time-cell: #f0f4f8;
  --block-bg: #243b53;
  --toggle-bg: #102a43;
  --toggle-ink: #fff;
  --strong: #102a43;
  --ring: #9a7b2f66;
  --radius: 14px;
  color-scheme: light;
}

[data-theme="night"] {
  --navy: #bcccdc;
  --navy-soft: #9fb3c8;
  --gold: #e0c36a;
  --gold-soft: #2d2614;
  --ink: #f0f4f8;
  --muted: #829ab1;
  --paper: #0b111a;
  --card: #151c27;
  --line: #2a3646;
  --danger: #ff8a96;
  --danger-bg: #3a151b;
  --ok: #7ee0b4;
  --ok-bg: #123226;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.35), 0 12px 32px rgba(0, 0, 0, 0.28);
  --page-bg: linear-gradient(180deg, #0b111a 0%, #101826 100%);
  --heading: #f0f4f8;
  --input-bg: #0f1621;
  --chip-muted: #1c2532;
  --table-line: #2a3646;
  --time-cell: #1c2532;
  --block-bg: #334e68;
  --toggle-bg: #e0c36a;
  --toggle-ink: #102a43;
  --strong: #334e68;
  --ring: #e0c36a66;
  --radius: 14px;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-font-smoothing: antialiased;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--page-bg);
  min-height: 100vh;
}

button,
input,
select {
  font-family: inherit;
}

.page {
  width: min(1360px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 48px;
}

.planner-page .page {
  width: min(1480px, calc(100% - 32px));
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: end;
  margin-bottom: 22px;
}

.eyebrow {
  margin: 0 0 6px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-size: 11px;
  color: var(--gold);
  font-weight: 600;
}

h1,
h2 {
  font-family: "IBM Plex Serif", "Source Serif 4", Georgia, serif;
  margin: 0;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(26px, 3.4vw, 36px);
  font-weight: 600;
  color: var(--heading);
}

h2 {
  font-size: 20px;
  font-weight: 600;
  color: var(--heading);
}

.topbar-end {
  display: grid;
  justify-items: end;
  gap: 10px;
}

.theme-toggle {
  border: 1px solid var(--line);
  background: var(--toggle-bg);
  color: var(--toggle-ink);
  border-radius: 999px;
  padding: 8px 14px;
  font-weight: 600;
  font-size: 13px;
}

.subtitle {
  max-width: 340px;
  margin: 0;
  color: var(--muted);
  text-align: right;
}

.workspace {
  display: grid;
  grid-template-columns: 210px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

.workspace-main {
  min-width: 0;
  display: grid;
  gap: 18px;
}

.nav {
  display: flex;
  flex-direction: column;
  flex-wrap: nowrap;
  gap: 4px;
  margin: 0;
  padding: 10px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  position: sticky;
  top: 16px;
}

.nav-link {
  text-decoration: none;
  color: var(--navy-soft);
  background: transparent;
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 9px 12px;
  font-weight: 500;
  font-size: 14px;
  text-align: left;
}

.nav-link:hover {
  background: var(--chip-muted);
}

.nav-link.current {
  background: var(--strong);
  color: #fff;
  border-color: var(--strong);
  font-weight: 600;
}

.layout {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 18px;
}

.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px 22px;
}

.form-panel form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 16px;
}

label,
legend {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--navy-soft);
}

input[type="text"],
input[type="time"],
select {
  width: 100%;
  margin-top: 6px;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
  font: inherit;
  color: var(--ink);
  background: var(--input-bg);
}

input:focus,
select:focus {
  outline: 2px solid var(--ring);
  outline-offset: 1px;
  border-color: var(--gold);
}

.full {
  grid-column: 1 / -1;
}

fieldset {
  border: 1px dashed var(--line);
  border-radius: 16px;
  padding: 12px;
}

.presets,
.day-grid,
.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.presets {
  margin: 8px 0 10px;
}

.chip,
.btn,
.mini {
  border: 0;
  cursor: pointer;
  font: inherit;
}

.chip {
  background: var(--gold-soft);
  color: var(--navy);
  border-radius: 999px;
  padding: 6px 12px;
  font-weight: 600;
  font-size: 13px;
}

.chip.active {
  background: var(--strong);
  color: #fff;
}

.day {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--chip-muted);
  border-radius: 999px;
  padding: 6px 10px;
  font-weight: 500;
}

.btn {
  border-radius: 10px;
  padding: 9px 14px;
  font-weight: 600;
  font-size: 14px;
}

.primary {
  background: var(--strong);
  color: #fff;
}

.ghost {
  background: transparent;
  color: var(--navy-soft);
  box-shadow: inset 0 0 0 1px var(--line);
}

.alert {
  grid-column: 1 / -1;
  border-radius: 12px;
  padding: 10px 12px;
  font-size: 14px;
}

.alert.error {
  background: var(--danger-bg);
  color: var(--danger);
}

.alert.ok {
  background: var(--ok-bg);
  color: var(--ok);
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.count {
  color: var(--muted);
  font-size: 13px;
}

.week-wrap {
  overflow: auto;
}

.week-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 640px;
  font-size: 12px;
}

.week-table th,
.week-table td {
  border: 1px solid var(--table-line);
  padding: 6px;
  vertical-align: top;
  min-width: 78px;
}

.week-table th {
  background: var(--strong);
  color: #fff;
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.02em;
}

.week-table td.time-cell {
  background: var(--time-cell);
  font-weight: 600;
  color: var(--navy-soft);
  white-space: nowrap;
  min-width: 132px;
}

.week-table td.empty-week {
  text-align: center;
  color: var(--muted);
  padding: 22px 10px;
}

.block {
  background: var(--block-bg);
  color: #fff;
  border-radius: 8px;
  padding: 7px 8px;
  margin-bottom: 4px;
  font-size: 12px;
}

.block small {
  display: block;
  opacity: 0.8;
}

.block.lab {
  background: #6b4a16;
}

[data-theme="night"] .block.lab {
  background: #8a6a2a;
}

.block.clash,
.block.lab.clash {
  background: #9b1d2a;
}

[data-theme="night"] .block.clash,
[data-theme="night"] .block.lab.clash {
  background: #8a2430;
}

.slot-card.clash {
  border-color: var(--danger);
  background: var(--danger-bg);
}

.planner-page #offeredCourseTbl .plan-action {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  min-width: 148px;
}

.planner-page #offeredCourseTbl .plan-add-btn {
  appearance: none;
  min-width: 76px;
  min-height: 32px;
  padding: 6px 14px;
  border: 1px solid transparent;
  border-radius: 999px;
  font: inherit;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1;
  cursor: pointer;
  white-space: nowrap;
}

.planner-page #offeredCourseTbl .plan-add-btn.is-ok {
  background: #102a43;
  color: #fff;
  box-shadow: 0 1px 0 rgba(16, 42, 67, 0.15);
}

.planner-page #offeredCourseTbl .plan-add-btn.is-ok:hover {
  background: #243b53;
}

.planner-page #offeredCourseTbl .plan-add-btn.is-in {
  background: #e6f6f1;
  color: #147d64;
  border-color: #b7e4d4;
  cursor: default;
}

.planner-page #offeredCourseTbl .plan-add-btn.is-other,
.planner-page #offeredCourseTbl .plan-add-btn.is-skip {
  background: #f0f4f8;
  color: #627d98;
  border-color: #d9e2ec;
  cursor: default;
}

.planner-page #offeredCourseTbl .plan-flags {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 4px;
}

.planner-page #offeredCourseTbl .plan-flag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 20px;
  padding: 3px 8px;
  border-radius: 999px;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.01em;
  line-height: 1.2;
  white-space: nowrap;
}

.planner-page #offeredCourseTbl .plan-flag.clash {
  color: #9b1d2a;
  background: #fdecee;
  border: 1px solid #f3c5cb;
}

.planner-page #offeredCourseTbl .plan-flag.final {
  color: #7a5b16;
  background: #f8efd6;
  border: 1px solid #e4d2a0;
}

html[data-theme="night"] .planner-page #offeredCourseTbl .plan-add-btn.is-ok {
  background: #bcccdc;
  color: #0b111a;
}

html[data-theme="night"] .planner-page #offeredCourseTbl .plan-add-btn.is-ok:hover {
  background: #d9e2ec;
}

html[data-theme="night"] .planner-page #offeredCourseTbl .plan-add-btn.is-in {
  background: #123226;
  color: #7ee0b4;
  border-color: #1f4a38;
}

html[data-theme="night"] .planner-page #offeredCourseTbl .plan-add-btn.is-other,
html[data-theme="night"] .planner-page #offeredCourseTbl .plan-add-btn.is-skip {
  background: #1c2532;
  color: #9fb3c8;
  border-color: #2a3646;
}

html[data-theme="night"] .planner-page #offeredCourseTbl .plan-flag.clash {
  color: #ff8a96;
  background: #3a151b;
  border-color: #6a2a33;
}

html[data-theme="night"] .planner-page #offeredCourseTbl .plan-flag.final {
  color: #e0c36a;
  background: #2d2614;
  border-color: #8a6a2a;
}

.block.final-day,
.block.lab.final-day {
  box-shadow: inset 0 0 0 2px #e0c36a;
}

.slot-card.final-day {
  border-color: #c5922a;
}

.final-day-banner {
  margin: 10px 0 0;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid #c5922a;
  background: #fff6e0;
  color: #6b4a16;
  font-size: 13px;
}

[data-theme="night"] .final-day-banner {
  background: #2d2614;
  color: #e0c36a;
  border-color: #8a6a2a;
}

.final-day-banner p {
  margin: 0 0 4px;
}

.final-day-banner p:last-child {
  margin-bottom: 0;
}

.lab-check {
  width: fit-content;
}

.lab-under {
  margin-left: 18px;
  border-style: dashed;
}

.conflict-panel {
  margin-top: 18px;
  scroll-margin-top: 20px;
}

.conflict-list {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.conflict-card {
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid var(--danger);
  background: var(--danger-bg);
}

.conflict-card h3 {
  margin: 0 0 6px;
  font-size: 16px;
  color: var(--danger);
}

.conflict-card p {
  margin: 4px 0 0;
  font-size: 14px;
}

.conflict-days {
  font-weight: 700;
}

.changes-list .change-batch {
  margin: 0 0 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.changes-list time {
  display: block;
  font-weight: 700;
  color: var(--heading);
  margin-bottom: 6px;
}

.changes-list .change-added {
  color: var(--ok);
}

.changes-list .change-removed {
  color: var(--danger);
}

.changes-list .change-updated {
  color: #b8860b;
}

.list-panel {
  margin-top: 18px;
}

.slot-list {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.slot-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  align-items: center;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 14px;
}

.slot-card h3 {
  margin: 0;
  font-size: 16px;
}

.slot-card p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.mini {
  background: var(--danger-bg);
  color: var(--danger);
  border-radius: 10px;
  padding: 8px 10px;
  font-weight: 600;
}

.empty {
  color: var(--muted);
}

.search-label {
  display: block;
  margin-bottom: 14px;
}

.catalog-list {
  display: grid;
  gap: 18px;
}

.course-group {
  display: grid;
  gap: 10px;
}

.course-title {
  margin: 0;
  font-size: 18px;
  color: var(--heading);
}

.course-title small {
  font-weight: 500;
  color: var(--muted);
  font-size: 13px;
}

.priority-card {
  grid-template-columns: auto 1fr auto;
}

.rank {
  display: grid;
  place-items: center;
  min-width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--gold-soft);
  color: var(--heading);
  font-weight: 700;
}

.mini.rank-btn {
  background: var(--chip-muted);
  color: var(--ink);
}

.card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: end;
}

.mini.use {
  background: var(--ok-bg);
  color: var(--ok);
}

.cal-hero {
  background: var(--strong);
  color: #fff;
  border-color: transparent;
  box-shadow: var(--shadow);
}

.cal-hero h2,
.cal-kicker,
.cal-next-date,
.cal-next-title {
  color: #fff;
}

.cal-kicker {
  margin: 0 0 6px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 12px;
  font-weight: 700;
  opacity: 0.8;
}

.cal-hero h2 {
  font-size: 18px;
  margin-bottom: 8px;
}

.cal-next-date {
  margin: 0 0 6px;
  font-weight: 700;
}

.cal-next-title {
  margin: 0 0 14px;
  font-size: 18px;
  line-height: 1.4;
}

.cal-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0;
}

.cal-filter {
  border: 1px solid var(--line);
  background: var(--chip-muted);
  color: var(--ink);
  border-radius: 999px;
  padding: 6px 12px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.cal-filter[aria-pressed="true"] {
  background: var(--strong);
  color: #fff;
  border-color: var(--strong);
}

.cal-note {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 13px;
}

.cal-list {
  overflow: auto;
}

.cal-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 640px;
  font-size: 14px;
}

.cal-table th,
.cal-table td {
  border: 1px solid var(--table-line);
  padding: 10px 12px;
  vertical-align: top;
  text-align: left;
}

.cal-table th {
  background: var(--strong);
  color: #fff;
  font-weight: 600;
  white-space: nowrap;
}

.cal-table th:last-child,
.cal-table td.cal-remain-cell {
  text-align: center;
  white-space: nowrap;
  width: 1%;
}

.cal-table tr.is-next td {
  background: var(--gold-soft);
}

.cal-table tr[data-tone="past"] td {
  opacity: 0.55;
}

.cal-table tr.kind-payment td:nth-child(2) {
  color: var(--danger);
  font-weight: 600;
}

.cal-table time {
  font-weight: 700;
  color: var(--heading);
  white-space: nowrap;
}

.cal-remain {
  white-space: nowrap;
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 13px;
  font-weight: 700;
  background: var(--gold-soft);
  color: var(--heading);
}

.cal-remain[data-tone="today"],
.cal-remain[data-tone="soon"] {
  background: var(--danger-bg);
  color: var(--danger);
}

.cal-remain[data-tone="past"] {
  background: var(--chip-muted);
  color: var(--muted);
}

.cal-hero .cal-remain {
  display: inline-block;
}

.plan-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.plan-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.plan-tab {
  display: flex;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--card);
  overflow: hidden;
}

.plan-tab.current {
  border-color: var(--strong);
  background: var(--strong);
}

.plan-pick,
.plan-rename,
.plan-delete {
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  padding: 8px 12px;
}

.plan-tab.current .plan-pick,
.plan-tab.current .plan-rename,
.plan-tab.current .plan-delete {
  color: #fff;
}

.plan-bar-actions {
  display: flex;
  gap: 8px;
}

.planner-board {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  align-items: start;
}

.planner-page .offer-panel[hidden] {
  display: none !important;
}

.planner-page .offer-panel {
  padding: 16px 18px;
}

.planner-page .offer-panel .panel-head {
  margin-bottom: 10px;
}

.planner-page .offer-panel h2 {
  font-size: 19px;
}

.planner-page .offer-panel .table-wrap {
  max-width: none;
  padding: 0;
  min-height: 0;
  overflow: auto;
  --offer-zoom: 1;
}

.offer-head-tools {
  display: flex;
  align-items: center;
  gap: 10px;
}

.zoom-tools {
  display: flex;
  align-items: center;
  gap: 6px;
}

.zoom-tools span {
  min-width: 3.2em;
  text-align: center;
  font-size: 12px;
  color: var(--muted);
}

.planner-page .offer-panel .offered-page #offeredCourseTbl {
  min-width: calc(720px * var(--offer-zoom, 1));
}

.planner-page .offer-panel .offered-page #offeredCourseTbl thead th {
  font-size: calc(12px * var(--offer-zoom, 1));
  padding: calc(8px * var(--offer-zoom, 1)) calc(7px * var(--offer-zoom, 1));
}

.planner-page .offer-panel .offered-page #offeredCourseTbl tbody td {
  font-size: calc(13px * var(--offer-zoom, 1));
  padding: calc(6px * var(--offer-zoom, 1)) calc(7px * var(--offer-zoom, 1));
}

.planner-page .offer-panel .offered-page #offeredCourseTbl .mini {
  font-size: calc(12px * var(--offer-zoom, 1));
  padding: calc(5px * var(--offer-zoom, 1)) calc(8px * var(--offer-zoom, 1));
  border-radius: 8px;
}

.planner-page .offer-panel .dataTables_wrapper {
  padding: 12px 14px 8px;
  border-radius: 12px;
}

.planner-page .offer-panel .dt-top,
.planner-page .offer-panel .dt-bottom {
  margin: 0 0 10px;
  gap: 10px;
}

.planner-page .offer-panel .dt-bottom {
  margin: 10px 0 0;
}

.planner-page .offer-panel .dataTables_length,
.planner-page .offer-panel .dataTables_filter,
.planner-page .offer-panel .dataTables_info,
.planner-page .offer-panel .dataTables_paginate {
  font-size: 13px;
}

.planner-page .offer-panel .dataTables_wrapper .dataTables_length select,
.planner-page .offer-panel .dataTables_wrapper .dataTables_filter input {
  padding: 6px 8px;
  font-size: 13px;
  min-width: 64px;
  margin: 0 6px;
}

.planner-page .planner-embed {
  background: transparent !important;
  font-family: inherit;
  color: inherit;
}

/* Night: dark table, high-contrast text — not a white sheet. */
html[data-theme="night"] .planner-page .planner-embed.offered-page,
html[data-theme="night"] .planner-page .planner-embed .dataTables_wrapper,
html[data-theme="night"] .planner-page .planner-embed table#offeredCourseTbl {
  background: #151c27 !important;
  color: #e8eef6 !important;
  border-color: #2a3646 !important;
  color-scheme: dark;
}

html[data-theme="night"] .planner-page .planner-embed .dataTables_length,
html[data-theme="night"] .planner-page .planner-embed .dataTables_filter,
html[data-theme="night"] .planner-page .planner-embed .dataTables_info,
html[data-theme="night"] .planner-page .planner-embed .dataTables_paginate,
html[data-theme="night"] .planner-page .planner-embed .paginate_button {
  color: #d9e2ec !important;
}

html[data-theme="night"] .planner-page .planner-embed .dataTables_wrapper .dataTables_length select,
html[data-theme="night"] .planner-page .planner-embed .dataTables_wrapper .dataTables_filter input {
  background: #0f1621 !important;
  color: #f0f4f8 !important;
  border: 1px solid #627d98 !important;
  color-scheme: dark;
}

html[data-theme="night"] .planner-page .planner-embed #offeredCourseTbl thead th {
  background: #243b53 !important;
  color: #f0f4f8 !important;
}

html[data-theme="night"] .planner-page .planner-embed #offeredCourseTbl tbody td,
html[data-theme="night"] .planner-page .planner-embed #offeredCourseTbl tbody tr {
  background: #151c27 !important;
  color: #e8eef6 !important;
  border-bottom-color: #2a3646 !important;
}

html[data-theme="night"] .planner-page .planner-embed #offeredCourseTbl tbody tr:hover td {
  background: #1c2532 !important;
}

html[data-theme="night"] .planner-page .planner-embed td.full {
  background: #8b2e2e !important;
  color: #fff !important;
}

html[data-theme="night"] .planner-page .planner-embed .paginate_button.current {
  background: #334e68 !important;
  color: #fff !important;
  border-color: #334e68 !important;
}

.planner-page #offeredCourseTbl .mini {
  white-space: nowrap;
}

.offer-tools {
  display: grid;
  grid-template-columns: 1fr 140px auto;
  gap: 12px;
  align-items: end;
  margin: 12px 0 16px;
}

.offer-search {
  display: block;
}

.offer-hide-full {
  margin-bottom: 4px;
}

.offer-hint {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 13px;
}

.offer-list {
  display: grid;
  gap: 12px;
  max-height: 78vh;
  overflow: auto;
  padding-right: 4px;
}

.offer-card {
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 12px 14px;
  background: var(--input-bg);
}

.offer-lead {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.offer-card h3,
.offer-course {
  margin: 0;
  font-size: 18px;
  color: var(--heading);
}

.offer-course {
  display: flex;
  width: 100%;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  border: 0;
  background: transparent;
  padding: 0;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  text-align: left;
}

.offer-course small {
  color: var(--muted);
  font-weight: 600;
}

.offer-card ul[hidden] {
  display: none;
}

.offer-card.is-open ul {
  margin-top: 10px;
}

.offer-card ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.offer-sec {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 8px 10px;
  border-radius: 12px;
  background: var(--chip-muted);
}

.offer-sec div {
  display: grid;
  gap: 2px;
  font-size: 13px;
}

.offer-sec strong {
  font-size: 14px;
}

.offer-sec.status-in {
  box-shadow: inset 3px 0 0 var(--ok);
}

.offer-sec.status-clash,
.offer-sec.status-other {
  opacity: 0.72;
}

.plan-slot-list {
  margin-top: 16px;
}

/* Plan card: slightly tighter than default, still easy to read. */
.schedule-panel {
  padding: 16px 18px;
}

.schedule-panel .panel-head {
  margin-bottom: 10px;
}

.schedule-panel h2 {
  font-size: 19px;
}

.schedule-panel .week-table {
  min-width: 600px;
  font-size: 12px;
}

.schedule-panel .week-table th,
.schedule-panel .week-table td {
  padding: 5px 6px;
  min-width: 72px;
}

.schedule-panel .week-table th {
  font-size: 12px;
}

.schedule-panel .week-table td.time-cell {
  min-width: 120px;
  font-size: 12px;
}

.schedule-panel .week-table td.empty-week {
  padding: 14px 10px;
}

.schedule-panel .block {
  padding: 5px 7px;
  margin-bottom: 3px;
  font-size: 12px;
  border-radius: 7px;
  line-height: 1.3;
}

.schedule-panel .block small {
  font-size: 11px;
}

.schedule-panel .plan-slot-list,
.schedule-panel .slot-list {
  margin-top: 12px;
  gap: 8px;
}

.schedule-panel .course-group {
  gap: 8px;
}

.schedule-panel .course-title {
  font-size: 16px;
}

.schedule-panel .slot-card {
  padding: 8px 10px;
  border-radius: 10px;
  gap: 8px;
}

.schedule-panel .slot-card h3 {
  font-size: 14px;
}

.schedule-panel .slot-card p {
  margin: 3px 0 0;
  font-size: 13px;
}

.schedule-panel .mini {
  padding: 6px 9px;
  font-size: 12px;
  border-radius: 8px;
}

.planner-page .plan-bar {
  padding: 14px 16px;
}

.plan-export-host {
  position: fixed;
  left: -14000px;
  top: 0;
  width: 1180px;
  pointer-events: none;
  z-index: -1;
}

.plan-export-sheet {
  width: 1180px;
  background: #fff;
  color: #102a43;
  font-family: Arial, Helvetica, sans-serif;
}

.plan-export-sheet .export-head {
  background: #102a43;
  color: #fff;
  padding: 18px 28px 16px;
  border-bottom: 3px solid #9a7b2f;
}

.plan-export-sheet .export-kicker {
  margin: 0 0 6px;
  text-transform: uppercase;
  font-size: 11px;
  font-weight: 700;
  color: #fff;
}

.plan-export-sheet .export-title-row {
  overflow: hidden;
}

.plan-export-sheet h1 {
  margin: 0;
  float: left;
  font-size: 26px;
  color: #fff;
  font-weight: 700;
}

.plan-export-sheet h2 {
  margin: 0 0 8px;
  font-size: 15px;
  color: #102a43;
}

.plan-export-sheet .export-body {
  padding: 18px 28px 22px;
  background: #fff;
  color: #102a43;
}

.plan-export-sheet .export-meta,
.plan-export-sheet .export-foot,
.plan-export-sheet .export-empty {
  margin: 0;
  color: #627d98;
  font-size: 12px;
}

.plan-export-sheet .export-head .export-meta {
  float: right;
  color: #d9e2ec;
  padding-top: 10px;
}

.plan-export-sheet .export-foot {
  margin-top: 16px;
  padding-top: 10px;
  border-top: 1px solid #d9e2ec;
}

.plan-export-sheet .export-week,
.plan-export-sheet .export-courses {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
  background: #fff;
  color: #102a43;
}

.plan-export-sheet .export-week th,
.plan-export-sheet .export-week td,
.plan-export-sheet .export-courses th,
.plan-export-sheet .export-courses td {
  border: 1px solid #d9e2ec;
  padding: 6px 7px;
  text-align: left;
  vertical-align: top;
  background: #fff;
  color: #102a43;
}

.plan-export-sheet .export-week th,
.plan-export-sheet .export-courses th {
  background: #102a43;
  color: #fff;
  font-weight: 700;
  font-size: 12px;
}

.plan-export-sheet .export-week td.time-cell {
  width: 92px;
  background: #f0f4f8;
  color: #102a43;
  font-weight: 700;
  white-space: nowrap;
}

.plan-export-sheet .export-block {
  background: #243b53;
  color: #fff;
  border-radius: 4px;
  padding: 4px 6px;
  margin-bottom: 3px;
  font-size: 11px;
}

.plan-export-sheet .export-block.lab {
  background: #6b4a16;
}

.plan-export-sheet .export-block.clash {
  background: #9b1d2a;
}

.plan-export-sheet .export-block.final-day:not(.clash) {
  background: #8a6a2a;
}

.plan-export-sheet .export-block span {
  display: block;
  font-size: 10px;
  color: #fff;
}

.plan-export-sheet .export-flag {
  font-weight: 700;
}

.plan-export-sheet .export-notes.note-clash {
  color: #9b1d2a;
  font-weight: 700;
}

.plan-export-sheet .export-notes.note-final {
  color: #7a5b16;
  font-weight: 700;
}

.plan-export-sheet .export-courses {
  font-size: 12px;
  margin-top: 4px;
}

@media (max-width: 900px) {
  .workspace,
  .layout,
  .planner-board,
  .offer-tools,
  .form-panel form,
  .topbar {
    display: block;
  }

  .nav {
    flex-direction: row;
    flex-wrap: wrap;
    position: static;
    margin-bottom: 16px;
  }

  .nav-link {
    width: auto;
  }

  .subtitle,
  .schedule-panel,
  .form-panel {
    margin-top: 16px;
  }

  .topbar-end,
  .subtitle {
    justify-items: start;
    text-align: left;
  }
}