:root {
  --materials-ink: #344767;
  --materials-muted: var(--course-muted);
  --materials-border: #e8ebf2;
  --materials-surface-soft: #f8f9fc;
  --materials-magenta: #cb0c9f;
  --materials-active-text: #b80b90;
  --materials-link: var(--bs-indigo);
  --materials-green: #2f7d62;
}

body.dark-version {
  --materials-muted: #b7c0d2;
  --materials-active-text: #fff;
}

html {
  scroll-behavior: smooth;
}

.materials-page-header {
  padding: 1.5rem 1.75rem;
  background: #fff;
  border: 1px solid var(--materials-border);
  border-radius: 1rem;
  box-shadow: 0 8px 24px rgba(52, 71, 103, 0.06);
}

.materials-page-header h1 {
  margin: 0;
  color: var(--materials-ink);
  font-size: clamp(1.5rem, 2vw, 1.85rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.materials-layout {
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

.materials-index {
  top: 7rem !important;
  max-height: calc(100vh - 8.5rem);
  overflow-y: auto;
  border: 1px solid var(--materials-border);
  box-shadow: 0 8px 24px rgba(52, 71, 103, 0.05);
}

.materials-index-list {
  gap: 0.25rem;
  background: transparent !important;
}

.materials-index .nav-item {
  padding-top: 0 !important;
}

.material-anchor {
  min-height: 2.75rem;
  padding: 0.65rem 0.75rem !important;
  border-radius: 0.6rem;
  color: var(--materials-muted) !important;
  font-weight: 500;
  line-height: 1.35;
  transition: background-color 160ms ease, color 160ms ease, box-shadow 160ms ease;
}

.material-anchor .icon {
  width: 1.25rem;
  min-width: 1.25rem;
  margin-right: 0.5rem !important;
  text-align: center;
}

.material-anchor .icon i {
  color: #8392ab !important;
  font-size: 0.8rem;
}

.material-anchor .text-sm {
  font-size: 0.82rem !important;
  line-height: 1.35;
}

.materials-status-page .material-anchor .text-sm {
  font-size: 0.84rem !important;
}

.material-anchor:hover {
  background: var(--materials-surface-soft);
  color: var(--materials-ink) !important;
}

.material-anchor.active {
  background-color: rgba(203, 12, 159, 0.09);
  color: var(--materials-active-text) !important;
  box-shadow: inset 3px 0 0 var(--materials-magenta);
}

.material-anchor.active i {
  color: var(--materials-magenta) !important;
}

.materials-content {
  min-width: 0;
}

.materials-legend {
  padding: 0.85rem 1rem;
  background: transparent;
  border: 1px solid var(--materials-border);
  border-radius: 0.8rem;
  box-shadow: none;
}

.materials-status-page .materials-legend {
  display: flex;
  align-items: center;
  gap: 0.85rem 1.25rem;
}

.materials-status-page .materials-legend-label {
  flex: 0 0 auto;
  color: var(--materials-ink);
  font-size: 0.82rem;
  font-weight: 600;
}

.materials-legend-items {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
}

.materials-legend-item {
  display: inline-flex;
  align-items: center;
  color: var(--materials-muted);
  font-size: 0.78rem;
  font-weight: 500;
}

.materials-status-page .materials-legend-item {
  font-size: 0.82rem;
}

.materials-legend-item .text-muted {
  color: var(--materials-muted) !important;
}

.materials-legend-item i {
  width: 1rem;
  margin-right: 0.45rem;
  text-align: center;
}

.material-section {
  scroll-margin-top: 7rem;
  margin-top: 2.5rem !important;
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--materials-border);
  border-radius: 1rem;
  box-shadow: 0 10px 28px rgba(52, 71, 103, 0.07);
}

.material-section-header {
  padding: 1.6rem 1.75rem 1.35rem;
  background: #fff;
  border-bottom: 1px solid var(--materials-border);
}

.material-module-label {
  margin: 0 0 0.55rem;
  color: var(--materials-magenta);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.materials-status-page .material-module-label {
  font-size: 0.78rem;
}

.material-module-title {
  margin: 0;
  color: var(--materials-ink);
  font-size: clamp(1.2rem, 1.7vw, 1.45rem);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: -0.015em;
}

.material-objectives {
  margin: 0.9rem 0 0;
  padding: 0.8rem 1rem;
  color: var(--materials-muted);
  background: var(--materials-surface-soft);
  border-radius: 0.65rem;
  font-size: 0.88rem;
  line-height: 1.65;
}

.materials-status-page .material-objectives {
  font-size: 0.92rem;
}

.material-objectives strong {
  color: var(--materials-ink);
  font-weight: 600;
}

.material-section-body {
  padding: 1.5rem 1.75rem 1.7rem;
}

.material-phase {
  margin: 0;
}

.material-phase + .material-phase {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--materials-border);
}

.material-phase-heading {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0 0 0.8rem;
  padding: 0;
  color: var(--materials-green);
  border: 0;
  font-size: 0.87rem;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: 0;
  text-transform: none;
}

.materials-status-page .material-phase-heading {
  font-size: 0.9rem;
}

.material-phase-heading::before {
  content: "";
  width: 0.7rem;
  height: 0.2rem;
  flex: 0 0 auto;
  background: rgba(47, 125, 98, 0.7);
  border-radius: 999px;
}

.material-resource-list {
  display: grid;
  gap: 0.7rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.materials-resources-indented .material-resource-list {
  padding-left: 1.3rem;
}

.material-resource-item {
  position: relative;
  margin: 0 !important;
  color: var(--materials-muted);
  font-size: 0.92rem;
  line-height: 1.6;
}

.materials-status-page .material-resource-item {
  font-size: 0.95rem;
}

.material-resource-item > .custom-link {
  display: block;
  font-size: inherit !important;
  line-height: inherit;
}

.material-resource-item > .custom-link:has(> i:first-child) {
  position: relative;
  padding-left: 1.75rem;
}

.material-resource-item > .custom-link > i:first-child {
  position: absolute;
  top: 0.28rem;
  left: 0;
  width: 1rem;
  margin: 0 !important;
  text-align: center;
}

.material-resource-item > span {
  display: block;
  position: relative;
  padding-left: 1.75rem;
}

.material-resource-item > span::before {
  content: "";
  position: absolute;
  top: 0.78rem;
  left: 0.25rem;
  width: 0.55rem;
  height: 1px;
  background: #98a2b3;
}

.material-resource-item .custom-link:hover {
  font-size: inherit !important;
}

.material-resource-item .important-icon,
.material-resource-item .optional-icon {
  position: static !important;
  display: inline-block;
  width: auto !important;
  margin: 0 0.2rem !important;
  vertical-align: baseline;
}

.material-resource-item > .material-resource-row {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  padding-left: 0;
}

.materials-status-page .material-resource-item > .material-resource-row {
  display: grid;
  grid-template-columns: 1rem minmax(0, 1fr) auto;
  gap: 0.25rem 0.65rem;
}

.material-resource-item > .material-resource-row::before {
  content: none;
}

.material-resource-item > .material-resource-row > i:first-child {
  position: static !important;
  width: 1rem !important;
  min-width: 1rem;
  margin: 0.3rem 0 0 !important;
  text-align: center;
}

.material-resource-row > span,
.material-resource-row > a {
  min-width: 0;
}

.materials-status-page .material-resource-row > span:not(.material-status),
.materials-status-page .material-resource-row > a {
  grid-column: 2;
}

.materials-status-page .material-resource-type {
  color: var(--materials-muted);
}

.materials-status-page .material-status {
  display: inline-flex;
  grid-column: 3;
  align-items: center;
  gap: 0.35rem;
  justify-self: end;
  margin-left: 0.75rem;
  font-size: 0.78rem;
  font-weight: 600;
  line-height: 1.5;
  white-space: nowrap;
}

.materials-status-page .material-status i {
  width: 0.85rem;
  text-align: center;
}

.materials-status-page .material-status--required {
  color: var(--materials-magenta);
}

.materials-status-page .material-status--optional {
  color: var(--materials-muted);
}

.important-icon {
  color: var(--materials-magenta);
}

.optional-icon {
  color: #8392ab;
}

body.dark-version .materials-page-header,
body.dark-version .materials-index,
body.dark-version .material-section,
body.dark-version .material-section-header {
  background: #202940;
  border-color: rgba(255, 255, 255, 0.09);
}

body.dark-version .materials-page-header h1,
body.dark-version .material-module-title,
body.dark-version .material-objectives strong,
body.dark-version.materials-status-page .materials-legend-label {
  color: #fff;
}

body.dark-version .materials-legend,
body.dark-version .material-phase + .material-phase {
  border-color: rgba(255, 255, 255, 0.09);
}

body.dark-version .material-objectives,
body.dark-version .material-anchor:hover {
  background: rgba(255, 255, 255, 0.05);
}

body.dark-version .material-resource-item,
body.dark-version .materials-legend-item,
body.dark-version .material-objectives {
  color: #b7c0d2;
}

body.dark-version .material-phase-heading {
  color: #74c7a8;
}

body.dark-version.materials-status-page .material-status--required {
  color: #f08bd9;
}

body.dark-version.materials-status-page .material-status--optional,
body.dark-version.materials-status-page .material-resource-type {
  color: #b7c0d2;
}

@media (max-width: 991.98px) {
  .materials-index {
    position: relative !important;
    top: auto !important;
    max-height: none;
    margin-bottom: 1.5rem;
  }

  .materials-index-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 575.98px) {
  .materials-page-header,
  .material-section-header,
  .material-section-body {
    padding-left: 1.15rem;
    padding-right: 1.15rem;
  }

  .materials-index-list {
    grid-template-columns: 1fr;
  }

  .materials-legend-items {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.55rem;
  }

  .materials-status-page .materials-legend {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.55rem;
  }

  .materials-status-page .material-resource-item > .material-resource-row {
    grid-template-columns: 1rem minmax(0, 1fr);
  }

  .materials-status-page .material-status {
    grid-column: 2;
    justify-self: start;
    margin-left: 0;
  }

  .material-section {
    margin-top: 1.75rem !important;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}