[hidden] {
  display: none !important;
}

:root {
  --bg: #f6f8fb;
  --panel: #ffffff;
  --text: #1c2431;
  --muted: #64748b;
  --brand: #1d4ed8;
  --border: #dbe3ef;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
}

main.container { padding-bottom: 2.5rem; }
.page-shell { padding-top: 2rem; }

.container { width: min(1100px, 92%); margin: 0 auto; }
.stack-lg > * + * { margin-top: 1rem; }

.site-header {
  background: #1e4fa3;
  border-bottom: 1px solid #184284;
  position: sticky;
  top: 0;
  z-index: 100;
}
.logo { color: #f8fbff; }
.header-inner { display: flex; justify-content: space-between; align-items: center; padding: .8rem 0; gap: 1rem; }
.header-home { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; }
.logo { margin: 0; font-size: 1.25rem; }
.nav-links { display: flex; gap: .5rem; flex-wrap: wrap; }
.nav-links a { text-decoration: none; color: #e7f0ff; padding: .42rem .68rem; border-radius: .5rem; border: 1px solid transparent; }
.nav-links a.active { background: #f4f8ff; color: #143a78; border-color: #d3e4ff; }
.nav-links a:hover { background: #2b62ba; color: #ffffff; border-color: #4f7dca; }

.brand-link {
  display: inline-flex;
  align-items: center;
  justify-self: center;
  gap: .6rem;
  text-decoration: none;
  color: #f8fbff;
}

.brand-logo-wrap {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.brand-logo {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.header-spacer {
  width: 100%;
}

.panel { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 1rem; }
.panel-head { display: flex; justify-content: space-between; gap: 1rem; align-items: center; flex-wrap: wrap; }
.muted { color: var(--muted); }
.tiny { font-size: .85rem; }

.btn { border: 1px solid #bfd0f6; background: #f2f6ff; color: #12327f; border-radius: .6rem; padding: .5rem .9rem; cursor: pointer; text-decoration: none; display: inline-block; }
.btn-small { padding: .35rem .65rem; font-size: .9rem; }
.is-active { background: #dce8ff; border-color: #95b3f6; }
.toolbar { display: flex; gap: .5rem; align-items: center; margin: .8rem 0; }
.view-switcher { justify-content: flex-end; }
.view-icon-btn { width: 34px; height: 34px; padding: 0; display: inline-flex; align-items: center; justify-content: center; }

.icon { display: inline-grid; gap: 3px; width: 18px; }
.icon span { display: block; background: #24428c; border-radius: 3px; }
.icon-stacked span { height: 4px; width: 100%; }
.icon-grid { grid-template-columns: repeat(2, 1fr); width: 18px; gap: 2px; }
.icon-grid span { height: 8px; width: 8px; }
.icon-list { gap: 3px; width: 18px; }
.icon-list span { position: relative; height: 2px; width: calc(100% - 6px); margin-left: 6px; }
.icon-list span::before { content: ""; position: absolute; left: -6px; top: -1px; width: 3px; height: 3px; background: #24428c; border-radius: 50%; }

.dashboard-layout { margin-top: 0; }

.course-grid { display: grid; gap: .75rem; }
.course-card {
  background: #fbfdff;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: .95rem;
}
.course-card { cursor: grab; }
.course-card.is-dragging { opacity: .6; cursor: grabbing; }
.course-card h3 { margin: 0 0 .5rem; }
.course-card p { margin: 0; }
.course-card p + p { margin-top: .55rem; }
.course-card a { color: inherit; text-decoration: none; }
.course-card a:hover { color: #0f2f83; }

.unit-list a { text-decoration: none; color: #12327f; }
.unit-list a:hover { color: #0f2f83; background: #eef4ff; border-radius: .3rem; }
.course-card-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: .7rem; }
.course-tag { font-size: .75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; color: #1e3a8a; }
.progress { font-weight: 600; color: #1e3a8a; font-size: .85rem; }

.view-large { grid-template-columns: 1fr; }
.view-square { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.view-square .course-card { aspect-ratio: 1 / 1; display: flex; flex-direction: column; justify-content: space-between; }
.view-list { grid-template-columns: 1fr; }
.view-list .course-card-top, .view-list .course-card p { display: none; }
.view-list .course-card h3 { margin: 0; }

.empty-state {
  border: 1px dashed var(--border);
  border-radius: 10px;
  background: #fcfdff;
  padding: 1.2rem;
  display: grid;
  gap: .8rem;
  justify-items: start;
}

.catalogue-item {
  display: flex;
  align-items: start;
  gap: .7rem;
  padding: .7rem;
  border: 1px solid var(--border);
  border-radius: .6rem;
  background: #fbfdff;
}

.catalogue-item input { margin-top: .25rem; }
.catalogue-item strong { display: block; margin-bottom: .15rem; }

.unit-list details { border: 1px solid var(--border); padding: .65rem .8rem; border-radius: .5rem; background: #fcfdff; }
.unit-list details + details { margin-top: .65rem; }
.lesson-list { list-style: none; padding: 0; margin: 0; }
.lesson-list li { padding: .45rem 0; border-bottom: 1px solid #edf2f8; }
.incomplete { color: #6b7280; font-weight: 600; }
.example-box { border-left: 4px solid #9eb6f4; background: #f7faff; padding: .65rem .8rem; border-radius: 8px; }
.lesson-meta { display: block; margin-top: .2rem; }
.figure-grid { display: grid; gap: .75rem; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
.figure-card { margin: 0; border: 1px solid var(--border); border-radius: 10px; padding: .6rem; background: #fcfdff; }
.figure-card img { width: 100%; border-radius: 8px; display: block; }
.figure-card figcaption { margin-top: .45rem; color: var(--muted); font-size: .85rem; }

@media (max-width: 820px) {
  .header-home { grid-template-columns: 1fr; justify-items: center; gap: .7rem; }
  .header-spacer { display: none; }
}

@media (max-width: 680px) {
  .view-square { grid-template-columns: 1fr; }
}


.with-sidebar { display: grid; grid-template-columns: 220px 1fr; gap: 1rem; align-items: start; }
.sidebar-title { margin-top: 0; font-size: 1rem; }
.sidebar-nav { display: grid; gap: .4rem; }
.sidebar-nav a { text-decoration: none; color: var(--text); padding: .5rem .65rem; border-radius: .45rem; }
.sidebar-nav a.active, .sidebar-nav a:hover { background: #e5edff; color: #0f2f83; }
.dashboard-head-row { align-items: center; }
.dashboard-head-row h2 { margin: 0; }
.dashboard-head-row .toolbar { margin: 0; }
.dashboard-head-row { margin-bottom: .7rem; }
.subject-section .catalogue-item + .catalogue-item { margin-top: .6rem; }
.catalogue-categories { display: grid; gap: 1rem; }
.category-box { width: 100%; min-height: 84px; display: flex; align-items: center; }
.category-box h3 { margin: 0; }

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  z-index: 1000;
}
.modal-backdrop[hidden] { display: none !important; }
.modal-panel {
  width: min(700px, 96vw);
  max-height: 90vh;
  overflow: auto;
  border: 1px solid var(--border);
  background: var(--panel);
  border-radius: 12px;
  padding: 1rem;
  display: grid;
  gap: .9rem;
}
.modal-head { display: flex; align-items: center; justify-content: space-between; gap: .7rem; }
.modal-head h2 { margin: 0; }
.modal-close-btn { white-space: nowrap; }
.modal-content { margin: .2rem 0; }
.modal-actions {
  border-top: 1px solid var(--border);
  padding-top: .8rem;
  display: flex;
  justify-content: flex-end;
}

@media (max-width: 920px) {
  .with-sidebar { grid-template-columns: 1fr; }
}

.compact-course-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .8rem; }
.subject-box { border: 1px solid var(--border); border-radius: .6rem; padding: .55rem .65rem; background: #f8fbff; }
.subject-box-head { display: flex; align-items: flex-start; justify-content: space-between; gap: .4rem; margin-bottom: .4rem; }
.subject-box h3 { margin: 0; font-size: .95rem; }
.subject-toggle { border: 0; background: transparent; color: #5f6f8d; font-size: .95rem; line-height: 1; padding: .1rem .25rem; border-radius: .25rem; cursor: pointer; }
.subject-toggle:hover { background: #e8efff; color: #1a2f72; }
.subject-course-list { margin: 0; padding-left: 0; list-style: none; display: grid; gap: .25rem; }
.subject-course-list li { font-size: .92rem; }
.subject-course-list label { display: inline-flex; align-items: center; gap: .38rem; }
.subject-course-list input { margin: 0; }
.modal-panel .tiny { font-size: .78rem; }
@media (max-width: 760px) { .compact-course-grid { grid-template-columns: 1fr; } }

.dashboard-actions { margin-top: 1rem; display: flex; justify-content: flex-start; }


body[data-page="catalogue"] main.container {
  padding-bottom: 3.5rem;
}

.catalogue-intro {
  margin-bottom: .75rem;
}

.category-box-courses {
  display: block;
  min-height: auto;
}

.catalogue-course-list {
  margin: .6rem 0 0;
  padding-left: 0;
  list-style: none;
  display: grid;
  gap: .45rem;
}

.catalogue-course-list a {
  display: block;
  text-decoration: none;
  color: #12327f;
  background: #f7faff;
  border: 1px solid var(--border);
  border-radius: .5rem;
  padding: .5rem .65rem;
}

.catalogue-course-list a:hover {
  background: #eaf1ff;
  text-decoration: none;
}

.subject-box.is-collapsed .subject-course-list { display: none; }

.lesson-header-panel h2 {
  margin-bottom: .35rem;
}

#learningOutcomesPanel {
  background: #f7faff;
}

.lesson-section {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: .8rem;
  background: #fcfdff;
}

.lesson-extension {
  border-left: 4px solid #8b5cf6;
  background: #faf7ff;
}

.lesson-subsection {
  margin-top: .7rem;
  padding-top: .2rem;
}

.table-wrap {
  overflow-x: auto;
}

.table-wrap table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--border);
}

.table-wrap th,
.table-wrap td {
  border: 1px solid var(--border);
  padding: .45rem .5rem;
  text-align: left;
  vertical-align: top;
}

.lesson-error {
  border-color: #fca5a5;
  background: #fef2f2;
}

.lesson-math {
  background: #f8fafc;
  border: 1px dashed #cbd5e1;
  border-radius: 8px;
  padding: .55rem;
}

.course-layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 1.25rem;
  align-items: start;
}

.course-sidebar {
  position: sticky;
  top: 82px;
}

.course-sidebar-card h2 { margin: .2rem 0 .35rem; font-size: 1.45rem; }
.course-sidebar-nav { display: grid; gap: .45rem; margin-top: .7rem; }
.course-sidebar-link {
  text-decoration: none;
  color: var(--text);
  border: 1px solid transparent;
  border-radius: .6rem;
  padding: .62rem .7rem;
  font-size: .97rem;
  line-height: 1.3;
}
.course-sidebar-link:hover,
.course-sidebar-link.active {
  background: #eaf1ff;
  border-color: #c8dafc;
  color: #0f2f83;
}

.course-main-head h2 { margin: 0; font-size: 1.8rem; }
.course-map-rows { display: grid; }
.course-map-row {
  display: grid;
  grid-template-columns: minmax(260px, 340px) 1fr;
  gap: .9rem;
  align-items: center;
  padding: .9rem .2rem;
  border-top: 1px solid #e7edf6;
}
.course-map-row:first-child { border-top: none; }
.course-map-row.is-up-next { background: #f8fbff; }
.course-map-unit-link { text-decoration: none; color: inherit; font-weight: 600; }
.course-map-unit-link:hover { color: #0f2f83; }
.course-progress-legend { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: .3rem; }
.legend-item { display: inline-flex; align-items: center; gap: .45rem; color: #475569; font-size: .9rem; }
.lesson-box-grid { display: flex; flex-wrap: wrap; gap: .45rem; }
.lesson-box {
  width: 32px;
  height: 32px;
  border: 1.5px solid #cbd5e1;
  border-radius: 7px;
  background: #fff;
  color: #334155;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-size: .62rem;
  font-weight: 600;
  position: relative;
}
.lesson-box:hover { border-color: #7aa2ef; }
.lesson-box.is-disabled { opacity: .55; cursor: not-allowed; }
.lesson-box.status-in-progress { background: #facc15; border-color: #eab308; color: transparent; }
.lesson-box.status-in-progress::after {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #fff;
  position: absolute;
}
.lesson-box.status-completed { background: #22c55e; border-color: #16a34a; color: transparent; }
.lesson-box.status-completed::after { content: '✓'; color: #fff; font-size: 1rem; line-height: 1; position: absolute; }

@media (max-width: 900px) {
  .course-layout { grid-template-columns: 1fr; }
  .course-sidebar { position: static; }
  .course-map-row { grid-template-columns: 1fr; gap: .6rem; }
}


.unit-progress-card h2 { margin: 0 0 .5rem; font-size: 1.8rem; }
.unit-lessons-card h3 { margin: 0 0 .8rem; font-size: 1.35rem; }
.unit-progress-card .course-progress-legend { margin-bottom: .65rem; }

.unit-lesson-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: .6rem;
}

.unit-lesson-item {
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: 0;
  border-radius: .5rem;
  border: 1px solid transparent;
}

.unit-lesson-item:hover {
  background: #f8fbff;
  border-color: #d6e3fb;
}

.unit-lesson-link {
  display: block;
  flex: 1;
  padding: .5rem .2rem;
  color: inherit;
  text-decoration: none;
}

.unit-lesson-link:hover { color: #0f2f83; }

.lesson-shell { padding: 1.1rem 1.2rem; }
.learning-outcomes-inline {
  border-top: 1px solid #d7dde8;
  border-bottom: 1px solid #d7dde8;
  margin: 1rem 0;
  padding: .65rem 0;
  text-align: left;
  color: #4f5d76;
  font-style: normal;
}
.learning-outcomes-inline p { margin: .25rem 0; line-height: 1.4; }
.learning-outcomes-inline .outcome-code { color: #1f2a44; font-weight: 700; }
.lesson-inline-warning { margin: .4rem 0; }
.lesson-figure { margin: .8rem 0; }
.lesson-figure img { display: block; max-width: 100%; height: auto; border-radius: .4rem; border: 1px solid #dbe3f1; }
.lesson-figure figcaption { margin-top: .4rem; color: #44516a; font-size: .95rem; }
.lesson-content-flow section { margin: .9rem 0; }
.lesson-content-flow h3 { margin: .8rem 0 .35rem; }
.lesson-back-link {
  display: inline-block;
  margin-bottom: .45rem;
  font-size: .85rem;
  color: #1d4ed8;
  text-decoration: none;
}
.lesson-back-link:hover { text-decoration: underline; }

.lesson-sidebar-link {
  display: flex;
  align-items: center;
  gap: .5rem;
}

.lesson-inline-progress {
  width: 14px;
  height: 14px;
  border: 1.5px solid #cbd5e1;
  border-radius: 4px;
  background: #fff;
  flex-shrink: 0;
  position: relative;
}
.lesson-inline-progress.status-in-progress {
  background: #facc15;
  border-color: #eab308;
}
.lesson-inline-progress.status-in-progress::after {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #fff;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.lesson-inline-progress.status-completed {
  background: #22c55e;
  border-color: #16a34a;
}
.lesson-inline-progress.status-completed::after {
  content: '✓';
  color: #fff;
  font-size: .65rem;
  line-height: 1;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

@media (max-width: 820px) {
  .page-shell { padding-top: 1.25rem; }
}