#course-builder-root {
  --builder-panel-width: 300px;
  --builder-inspector-width: 280px;
  --builder-cell-min: 188px;
  min-width: 0;
}

#course-builder-root .activity-builder-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  min-width: 0;
}

#course-builder-root .activity-builder-layout.panel-open {
  grid-template-columns: var(--builder-panel-width) minmax(0, 1fr);
}

#course-builder-root .activity-builder-layout.has-inspector {
  grid-template-columns: minmax(0, 1fr) var(--builder-inspector-width);
}

#course-builder-root .activity-builder-layout.panel-open.has-inspector {
  grid-template-columns:
    var(--builder-panel-width)
    minmax(0, 1fr)
    var(--builder-inspector-width);
}

#course-builder-root .activity-builder-main {
  grid-column: 1;
  min-width: 0;
}

#course-builder-root .panel-open .activity-builder-main {
  grid-column: 2;
}

#course-builder-root .activity-builder-side {
  grid-column: 1;
  grid-row: 1;
  position: sticky;
  top: calc(var(--global-header-height) + 12px);
  max-height: calc(100vh - var(--global-header-height) - 24px);
  margin-right: 12px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #f5f9fb;
  box-shadow: none;
}

#course-builder-root .activity-builder-inspector {
  grid-column: 2;
  grid-row: 1;
  position: sticky;
  top: calc(var(--global-header-height) + 12px);
  align-self: start;
  max-height: calc(100vh - var(--global-header-height) - 24px);
  overflow: auto;
  margin-left: 12px;
  padding: 14px;
  border-left: 1px solid var(--line);
  background: #fff;
}

#course-builder-root .panel-open .activity-builder-inspector {
  grid-column: 3;
}

#course-builder-root .course-builder-surface.card {
  min-width: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.course-builder-commandbar {
  position: relative;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px 12px;
  flex-wrap: wrap;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.97);
  box-shadow: 0 8px 22px rgba(7, 52, 93, 0.07);
  backdrop-filter: blur(12px);
}

.course-builder-commandbar-main,
.course-builder-commandbar-actions,
.course-builder-title-row,
.course-builder-view-switcher,
.course-builder-create-actions,
.course-builder-tool-actions {
  display: flex;
  align-items: center;
}

.course-builder-commandbar-main,
.course-builder-commandbar-actions {
  justify-content: space-between;
  gap: 12px;
}

.course-builder-commandbar-main {
  flex: 1 1 620px;
  min-width: 0;
}

.course-builder-commandbar-actions {
  flex: 0 1 auto;
}

.course-builder-title-row {
  min-width: 0;
  gap: 10px;
}

.course-builder-title-row h3 {
  margin: 0;
  font-size: 1rem;
}

.course-builder-save-state {
  color: var(--muted);
  font-size: 0.75rem;
  white-space: nowrap;
}

.course-builder-view-switcher {
  gap: 3px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #eef4f7;
}

.course-builder-view-switcher button {
  min-height: 32px;
  padding: 6px 11px;
  border: 0;
  border-radius: 5px;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
}

.course-builder-view-switcher button.active {
  background: #fff;
  color: var(--navy);
  box-shadow: 0 1px 4px rgba(7, 52, 93, 0.12);
}

.course-builder-create-actions,
.course-builder-tool-actions {
  gap: 6px;
  flex-wrap: wrap;
}

.course-builder-create-actions {
  padding-right: 10px;
  border-right: 1px solid var(--line);
}

.course-builder-commandbar .pill {
  min-height: 34px;
  padding: 6px 11px;
  border-radius: 6px;
}

.course-builder-commandbar .pill.dashed {
  border-style: solid;
}

.course-builder-workarea {
  min-width: 0;
  padding-top: 10px;
}

#course-builder-root .activity-group {
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #fff;
  overflow: hidden;
}

#course-builder-root .modular-view {
  display: grid;
  gap: 10px;
}

#course-builder-root .modular-view .activity-group-title {
  min-height: 48px;
  margin: 0;
  padding: 10px 14px;
  border: 0;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  background: #edf4f7;
}

#course-builder-root .modular-view .activity-subgroup {
  margin: 10px 12px;
  padding: 0 0 0 12px;
  border: 0;
  border-left: 3px solid #9fcbd1;
  border-radius: 0;
  background: transparent;
}

#course-builder-root .modular-view .activity-subgroup-title {
  min-height: 40px;
  margin: 0 0 8px;
  padding: 8px 10px;
  border: 0;
  border-radius: 6px;
  background: #f5f9fb;
}

#course-builder-root .activity-card {
  padding: 12px;
  border: 1px solid #cfdfe6;
  border-left: 4px solid var(--accent);
  border-radius: 7px;
  background: #fff;
  box-shadow: 0 3px 10px rgba(7, 52, 93, 0.05);
  transition: border-color 140ms ease, box-shadow 140ms ease, transform 140ms ease;
}

#course-builder-root .activity-card:hover {
  border-color: #9fcbd1;
  box-shadow: 0 7px 18px rgba(7, 52, 93, 0.09);
  transform: translateY(-1px);
}

#course-builder-root .activity-card-title {
  color: var(--ink);
  font-size: 0.9rem;
  line-height: 1.35;
}

#course-builder-root .activity-card-actions,
#course-builder-root .activity-group-actions,
#course-builder-root .activity-subgroup-actions {
  opacity: 1;
  pointer-events: auto;
}

#course-builder-root .activity-kanban {
  max-width: 100%;
  padding: 2px 2px 12px;
}

#course-builder-root .activity-kanban-lanes {
  align-items: flex-start;
  gap: 10px;
  min-width: min-content;
}

#course-builder-root .activity-lane {
  box-sizing: border-box;
  width: 286px;
  min-width: 286px;
  flex: 0 0 286px;
  min-height: 280px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #edf3f6;
}

#course-builder-root .activity-lane .activity-list,
#course-builder-root .activity-lane .activity-card,
#course-builder-root .activity-lane .activity-card-header,
#course-builder-root .activity-lane .activity-card-title,
#course-builder-root .activity-lane .activity-card-meta {
  min-width: 0;
  max-width: 100%;
}

#course-builder-root .activity-lane .activity-card {
  box-sizing: border-box;
  width: 100%;
  overflow: hidden;
}

#course-builder-root .activity-lane .activity-card-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: start;
  gap: 8px;
}

#course-builder-root .activity-lane .activity-card-title {
  overflow-wrap: anywhere;
}

#course-builder-root .activity-lane .activity-card-meta {
  display: grid;
  grid-column: 1 / -1;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 6px;
  width: 100%;
}

#course-builder-root .activity-lane .activity-quick-select {
  box-sizing: border-box;
  width: 100%;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}

#course-builder-root .activity-lane .activity-card-actions {
  align-self: start;
  white-space: nowrap;
}

.activity-lane-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 36px;
  padding: 2px 4px 8px;
  color: var(--navy);
}

.activity-lane-count {
  display: inline-grid;
  min-width: 24px;
  min-height: 22px;
  place-items: center;
  border-radius: 999px;
  background: #fff;
  color: var(--muted);
  font-size: 0.72rem;
}

.activity-lane-add {
  width: 100%;
  min-height: 34px;
  margin-top: 6px;
  border: 1px dashed #a9c5d0;
  border-radius: 6px;
  background: transparent;
  color: var(--navy);
  font: inherit;
  font-size: 0.8rem;
  cursor: pointer;
}

#course-builder-root .activity-table-controls {
  justify-content: space-between;
  min-height: 38px;
  margin-bottom: 8px;
}

#course-builder-root .activity-table-wrap {
  max-height: calc(100vh - 250px);
  border-radius: var(--radius-sm);
}

#course-builder-root .activity-table thead th,
#course-builder-root .activity-table thead .title-col {
  background: #edf4f7;
}

#course-builder-root .activity-table thead tr.category-row th {
  color: var(--navy);
  letter-spacing: 0;
}

#course-builder-root .activity-table td {
  min-height: 48px;
}

.activity-builder-inspector h4 {
  margin: 0 0 4px;
  color: var(--navy);
}

.activity-builder-inspector p {
  margin-bottom: 14px;
  font-size: 0.8rem;
}

.activity-builder-inspector .form-group {
  margin-bottom: 12px;
}

.activity-builder-inspector input,
.activity-builder-inspector select {
  width: 100%;
}

.planning-commandbar {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 8px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #f5f9fb;
}

.planning-commandbar label {
  display: grid;
  gap: 4px;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 600;
}

.planning-commandbar select,
.planning-commandbar input {
  min-height: 34px;
  padding: 6px 9px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  font: inherit;
  font-size: 0.8rem;
}

.planning-commandbar-spacer {
  flex: 1 1 20px;
}

.primary-profile .planning-commandbar {
  padding: 9px 10px;
  border-color: #cfe2e8;
  background: #f7fbfc;
}

.primary-profile .planning-commandbar label {
  color: #526675;
}

.primary-profile #course-builder-root .planning-grid-wrapper,
.primary-profile #course-builder-root .planning-grid {
  background: #f0f6f8;
}

.primary-profile #course-builder-root .planning-grid thead th,
.primary-profile #course-builder-root .planning-grid th:first-child,
.primary-profile #course-builder-root .planning-grid td:first-child {
  background: #e8f2f5;
}

.planning-week-navigation {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 34px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
}

.planning-week-navigation strong {
  min-width: 86px;
  text-align: center;
  font-size: 0.8rem;
}

#course-builder-root .planning-grid-wrapper {
  max-width: 100%;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #edf3f6;
  overflow: auto;
}

#course-builder-root .planning-grid {
  border-collapse: separate;
  border-spacing: 8px;
  padding: 0 8px 8px 0;
  background: #edf3f6;
}

#course-builder-root .planning-grid th,
#course-builder-root .planning-grid td {
  min-width: var(--builder-cell-min);
  padding: 8px;
  border: 1px solid #d4e2e8;
  border-radius: 7px;
  background: #fff;
}

#course-builder-root .planning-grid thead th {
  position: sticky;
  top: 0;
  z-index: 8;
  min-height: 62px;
  background: #e4eef2;
  box-shadow: 0 3px 8px rgba(7, 52, 93, 0.06);
}

#course-builder-root .planning-grid th:first-child,
#course-builder-root .planning-grid td:first-child {
  position: sticky;
  left: 0;
  z-index: 7;
  width: 170px;
  min-width: 170px;
  background: #e4eef2;
}

#course-builder-root .planning-grid thead th:first-child {
  z-index: 10;
}

#course-builder-root .planning-grid th input {
  border-color: transparent;
  background: transparent;
  font-weight: 650;
}

#course-builder-root .planning-grid th input:hover,
#course-builder-root .planning-grid th input:focus {
  border-color: #b7d1da;
  background: #fff;
}

#course-builder-root .planning-cell {
  position: relative;
  align-content: start;
  min-height: 122px;
  gap: 8px;
}

#course-builder-root .planning-cell-add {
  display: grid;
  width: 28px;
  height: 28px;
  margin-top: auto;
  place-items: center;
  border: 1px dashed #a9c5d0;
  border-radius: 6px;
  background: transparent;
  color: var(--navy);
  cursor: pointer;
  opacity: 0;
  transition: opacity 140ms ease, background 140ms ease;
}

#course-builder-root td:hover .planning-cell-add,
#course-builder-root .planning-cell-add:focus {
  opacity: 1;
}

#course-builder-root .planning-cell-add:hover {
  background: var(--cyan-soft);
}

#course-builder-root .planning-chip {
  position: relative;
  gap: 5px;
  padding: 10px 10px 9px 12px;
  border: 1px solid #c9dce4;
  border-left: 4px solid var(--planning-card-accent, var(--accent));
  border-radius: 7px;
  background: #fff;
  box-shadow: 0 3px 9px rgba(7, 52, 93, 0.07);
}

#course-builder-root .planning-chip:hover {
  border-color: #92bbc8;
  box-shadow: 0 7px 16px rgba(7, 52, 93, 0.11);
}

#course-builder-root .planning-chip-title {
  color: var(--ink);
  font-size: 0.84rem;
  line-height: 1.3;
}

#course-builder-root .planning-chip-meta span {
  padding: 2px 6px;
  border-radius: 999px;
  background: #eef4f7;
  color: #526675;
}

.planning-chip-duration {
  color: var(--navy);
  font-size: 0.7rem;
  font-weight: 700;
}

#course-builder-root .planning-note {
  border: 1px solid rgba(7, 52, 93, 0.12);
  border-radius: 6px;
}

#course-builder-root .planning-grid-wrapper.zoom-compact {
  --builder-cell-min: 148px;
}

#course-builder-root .zoom-compact .planning-cell {
  min-height: 76px;
}

#course-builder-root .zoom-compact .planning-chip {
  padding: 7px 8px;
}

#course-builder-root .planning-grid-wrapper.zoom-detailed {
  --builder-cell-min: 240px;
}

#course-builder-root .zoom-detailed .planning-cell {
  min-height: 180px;
}

#course-builder-root [data-plan-slot].is-over {
  outline: 2px solid var(--accent);
  outline-offset: -3px;
  background: #e8f7f7;
}

#course-builder-root button:focus-visible,
#course-builder-root [tabindex]:focus-visible,
#course-builder-root input:focus-visible,
#course-builder-root select:focus-visible {
  outline: 3px solid rgba(16, 174, 184, 0.28);
  outline-offset: 2px;
}

#course-builder-root button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

@media (max-width: 1180px) {
  #course-builder-root .activity-builder-layout.has-inspector {
    grid-template-columns: minmax(0, 1fr);
  }

  #course-builder-root .activity-builder-layout.panel-open.has-inspector {
    grid-template-columns: var(--builder-panel-width) minmax(0, 1fr);
  }

  #course-builder-root .activity-builder-inspector {
    display: block;
    grid-column: 1;
    grid-row: 2;
    position: static;
    max-height: none;
    margin: 12px 0 0;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
  }

  #course-builder-root .panel-open .activity-builder-inspector {
    grid-column: 2;
  }

  .course-builder-commandbar-main,
  .course-builder-commandbar-actions {
    width: 100%;
  }
}

@media (max-width: 860px) {
  #course-builder-root .activity-builder-layout.panel-open {
    grid-template-columns: minmax(0, 1fr);
  }

  #course-builder-root .activity-builder-side {
    position: fixed;
    inset: var(--global-header-height) auto 0 0;
    z-index: 100;
    width: min(88vw, 340px);
    max-height: none;
    margin: 0;
    border-radius: 0;
    box-shadow: 12px 0 32px rgba(7, 52, 93, 0.18);
  }

  #course-builder-root .panel-open .activity-builder-main {
    grid-column: 1;
  }

  #course-builder-root .panel-open .activity-builder-inspector {
    grid-column: 1;
  }

  .course-builder-view-switcher {
    width: 100%;
    overflow-x: auto;
  }

  .course-builder-view-switcher button {
    flex: 1 0 auto;
  }

  .course-builder-create-actions {
    padding-right: 0;
    border-right: 0;
  }

  .planning-commandbar > label {
    flex: 1 1 145px;
  }

  .planning-commandbar select,
  .planning-commandbar input {
    width: 100%;
  }
}