/* ==========================================================================
   Nexus Documentation Design System (DESIGN.md)
   ========================================================================== */

:root,
[data-md-color-scheme="default"] {
  /* Typography */
  --nexus-font-sans: "Inter", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --nexus-font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;

  /* Nexus Light Palette (#614) */
  --nexus-canvas: #f7f9fb;
  --nexus-canvas-alt: #f2f7fc;
  --nexus-surface: #ebf1fa;
  --nexus-surface-elevated: #f2f7fc;
  --nexus-surface-hover: #dbe7f6;
  --nexus-surface-code: #f2f7fc;
  --nexus-text-primary: #0f172a;
  --nexus-text-secondary: #475569;
  --nexus-text-muted: #64748b;
  --nexus-border: rgba(0, 88, 186, 0.18);
  --nexus-border-strong: rgba(0, 88, 186, 0.32);
  --nexus-hairline: rgba(0, 88, 186, 0.18);

  /* Accents & States */
  --nexus-accent: #0058ba;
  --nexus-accent-hover: #003a9e;
  --nexus-accent-accessible: #0058ba;
  --nexus-focus: #0058ba;
  --nexus-selection: rgba(0, 88, 186, 0.18);

  /* Status Colors */
  --nexus-status-info: #0058ba;
  --nexus-status-warning: #d97706;
  --nexus-status-danger: #dc2626;
  --nexus-status-success: #16a34a;

  /* Material Variables Mapping */
  --md-default-bg-color: var(--nexus-canvas);
  --md-default-bg-color--light: var(--nexus-surface);
  --md-default-bg-color--lighter: var(--nexus-canvas-alt);
  --md-default-bg-color--lightest: var(--nexus-surface-elevated);
  --md-default-fg-color: var(--nexus-text-primary);
  --md-default-fg-color--light: var(--nexus-text-secondary);
  --md-default-fg-color--lighter: var(--nexus-text-muted);
  --md-default-fg-color--lightest: var(--nexus-border);
  --md-primary-fg-color: var(--nexus-accent);
  --md-primary-bg-color: var(--nexus-canvas);
  --md-accent-fg-color: var(--nexus-accent);
  --md-code-bg-color: var(--nexus-surface-code);
  --md-code-fg-color: var(--nexus-text-primary);
  --md-typeset-color: var(--nexus-text-primary);
  --md-typeset-a-color: var(--nexus-accent);
  --md-shadow-z1: none;
  --md-shadow-z2: none;
  --md-shadow-z3: none;
}

[data-md-color-scheme="slate"] {
  /* Nexus Dark Palette (Canonical DESIGN.md) */
  --nexus-canvas: #07090D;
  --nexus-canvas-alt: #07111F;
  --nexus-surface: #0B132B;
  --nexus-surface-elevated: #0B1728;
  --nexus-surface-hover: rgba(138, 180, 255, 0.08);
  --nexus-surface-code: #07111F;
  --nexus-text-primary: #F5F7FA;
  --nexus-text-secondary: #A7AFBB;
  --nexus-text-muted: #68707C;
  --nexus-border: rgba(138, 180, 255, 0.14);
  --nexus-border-strong: rgba(138, 180, 255, 0.24);
  --nexus-hairline: rgba(138, 180, 255, 0.14);

  /* Accents & States */
  --nexus-accent: #005FCC;
  --nexus-accent-hover: #058DE0;
  --nexus-accent-accessible: #8AB4FF;
  --nexus-focus: #8AB4FF;
  --nexus-selection: rgba(138, 180, 255, 0.25);

  /* Status Colors */
  --nexus-status-info: #8AB4FF;
  --nexus-status-warning: #FBBF24;
  --nexus-status-danger: #F87171;
  --nexus-status-success: #4ADE80;

  /* Material Variables Mapping */
  --md-default-bg-color: var(--nexus-canvas);
  --md-default-bg-color--light: var(--nexus-surface);
  --md-default-bg-color--lighter: var(--nexus-canvas-alt);
  --md-default-bg-color--lightest: var(--nexus-surface-elevated);
  --md-default-fg-color: var(--nexus-text-primary);
  --md-default-fg-color--light: var(--nexus-text-secondary);
  --md-default-fg-color--lighter: var(--nexus-text-muted);
  --md-default-fg-color--lightest: var(--nexus-border);
  --md-primary-fg-color: var(--nexus-accent-accessible);
  --md-primary-bg-color: #07090D;
  --md-accent-fg-color: var(--nexus-accent-accessible);
  --md-code-bg-color: var(--nexus-surface-code);
  --md-code-fg-color: var(--nexus-text-primary);
  --md-typeset-color: var(--nexus-text-primary);
  --md-typeset-a-color: var(--nexus-accent-accessible);
  --md-shadow-z1: none;
  --md-shadow-z2: none;
  --md-shadow-z3: none;
}

/* Base resets & selection */
::selection {
  background-color: var(--nexus-selection);
}

:is(a, button, input, select, textarea, [tabindex="0"]):focus-visible {
  outline: 2px solid var(--nexus-focus);
  outline-offset: 2px;
}

/* ==========================================================================
   Header (#557)
   ========================================================================== */

.md-header {
  background-color: var(--nexus-canvas);
  border-bottom: 1px solid var(--nexus-border);
  box-shadow: none !important;
  color: var(--nexus-text-primary);
}

.md-header__inner {
  padding-top: 0.25rem;
  padding-bottom: 0.25rem;
}

.md-header .md-logo img {
  height: 28px;
  width: auto;
  max-width: 100%;
  display: block;
  object-fit: contain;
}

.md-header__title {
  color: var(--nexus-text-primary);
  font-family: var(--nexus-font-sans);
  font-weight: 500;
}

.md-header__topic {
  font-weight: 500;
}

.md-header__button {
  color: var(--nexus-text-secondary);
  transition: color 0.15s ease;
}

.md-header__button:hover {
  color: var(--nexus-text-primary);
}

/* ==========================================================================
   Search (#557)
   ========================================================================== */

.md-search__inner {
  max-width: 24rem;
}

.md-search__form {
  background-color: var(--nexus-surface);
  border: 1px solid var(--nexus-border);
  border-radius: 6px;
  box-shadow: none;
  transition: border-color 0.15s ease;
}

[data-md-color-scheme="default"] .md-search__form {
  background-color: #ffffff;
  border-color: var(--nexus-border);
}

.md-search__form:hover,
.md-search__input:focus ~ .md-search__form {
  border-color: var(--nexus-border-strong);
}

.md-search__input {
  background: transparent;
  color: var(--nexus-text-primary);
  font-family: var(--nexus-font-sans);
}

.md-search__input::placeholder {
  color: var(--nexus-text-muted);
}

.md-search__output {
  background-color: var(--nexus-surface-elevated);
  border: 1px solid var(--nexus-border);
  border-radius: 8px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
}

.md-search-result__item {
  border-bottom: 1px solid var(--nexus-border);
}

.md-search-result__link {
  color: var(--nexus-text-primary);
  transition: background-color 0.15s ease;
}

.md-search-result__link:hover,
.md-search-result__item--selected .md-search-result__link {
  background-color: var(--nexus-surface-hover);
}

.md-search-result__teaser mark {
  background-color: rgba(0, 95, 204, 0.25);
  color: var(--nexus-accent-accessible);
  padding: 0.1em 0.25em;
  border-radius: 2px;
}

/* ==========================================================================
   Sidebar & Navigation (#557)
   ========================================================================== */

.md-sidebar {
  background-color: var(--nexus-canvas);
}

.md-nav__link {
  color: var(--nexus-text-secondary);
  font-size: 0.85rem;
  transition: color 0.15s ease;
}

.md-nav__link:hover {
  color: var(--nexus-text-primary);
}

.md-nav__link--active,
.md-nav__item--active > .md-nav__link {
  color: var(--nexus-accent-accessible);
  font-weight: 500;
}

.md-nav__item--nested > .md-nav__link {
  color: var(--nexus-text-primary);
  font-weight: 600;
  margin-top: 0.5rem;
}

.md-sidebar--secondary .md-nav__link--active {
  border-left: 2px solid var(--nexus-accent);
  padding-left: 0.5rem;
}

/* Breadcrumbs / Path (#616) */
.md-path {
  margin-bottom: 0.75rem;
}

.md-path__list {
  display: flex !important;
  align-items: center !important;
  gap: 0.15rem;
  margin: 0;
  padding: 0;
}

.md-path__item {
  display: inline-flex !important;
  align-items: center !important;
  color: var(--nexus-text-muted);
  font-size: 0.8rem;
  line-height: 1;
}

.md-path__item::before {
  display: inline-block !important;
  vertical-align: middle !important;
  align-self: center !important;
  width: 0.95rem !important;
  height: 0.95rem !important;
  margin: 0 0.25rem 0 0.1rem !important;
  background-color: var(--nexus-text-muted) !important;
  position: static !important;
  transform: none !important;
}

.md-path__link {
  display: inline-flex !important;
  align-items: center !important;
  color: var(--nexus-text-muted);
  font-size: 0.8rem;
  line-height: 1;
  transition: color 0.15s ease;
}

.md-path__link:hover {
  color: var(--nexus-text-primary);
}

/* ==========================================================================
   Typography & Content Components (#559)
   ========================================================================== */

body,
.md-typeset {
  font-family: var(--nexus-font-sans);
  color: var(--nexus-text-primary);
  line-height: 1.65;
}

.md-content__inner {
  max-width: 48rem;
}

.md-typeset h1 {
  font-size: 1.85rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-top: 0;
  margin-bottom: 1.25rem;
  color: var(--nexus-text-primary);
}

.md-typeset h2 {
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-top: 2.25rem;
  margin-bottom: 0.85rem;
  color: var(--nexus-text-primary);
}

.md-typeset h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-top: 1.75rem;
  margin-bottom: 0.65rem;
  color: var(--nexus-text-primary);
}

.md-typeset a {
  color: var(--md-typeset-a-color);
  text-decoration-color: var(--nexus-border);
  transition: color 0.15s ease, text-decoration-color 0.15s ease;
}

.md-typeset a:hover {
  color: var(--nexus-accent-hover);
  text-decoration: underline;
}

/* Inline Code */
.md-typeset code {
  font-family: var(--nexus-font-mono);
  font-size: 0.85em;
  background-color: var(--nexus-surface);
  border: 1px solid var(--nexus-border);
  border-radius: 4px;
  padding: 0.15em 0.35em;
  color: var(--nexus-text-primary);
  word-break: break-word;
}

.md-typeset pre > code {
  background: transparent;
  border: none;
  padding: 0;
  word-break: normal;
}

/* Code Blocks (#618) */
.md-typeset .highlight {
  background-color: var(--nexus-surface-code);
  border: 1px solid var(--nexus-border);
  border-radius: 8px;
  font-family: var(--nexus-font-mono);
  box-shadow: none;
  overflow: hidden;
}

.md-typeset .highlight pre {
  background-color: transparent !important;
  border: none !important;
  border-radius: 0 !important;
  margin: 0 !important;
  padding: 1rem;
  box-shadow: none !important;
}

.md-typeset pre:not(.highlight pre) {
  background-color: var(--nexus-surface-code);
  border: 1px solid var(--nexus-border);
  border-radius: 8px;
  font-family: var(--nexus-font-mono);
  padding: 1rem;
}

.md-code__button,
.md-clipboard {
  color: var(--nexus-text-muted);
  transition: color 0.15s ease, opacity 0.15s ease;
}

.md-code__button:hover,
.md-code__button:focus-visible,
.md-clipboard:hover,
.md-clipboard:focus-visible {
  color: var(--nexus-text-primary);
  opacity: 1;
}

/* Cards & Grid Cards (#618) */
.md-typeset .grid.cards > ul > li {
  background-color: var(--nexus-surface);
  border: 1px solid var(--nexus-border);
  border-radius: 8px;
  padding: 1.25rem;
  box-shadow: none;
  transition: border-color 0.15s ease, background-color 0.15s ease;
  word-break: break-word;
}

.md-typeset .grid.cards > ul > li:hover {
  border-color: var(--nexus-border-strong);
  background-color: var(--nexus-surface-hover);
}

.md-typeset .grid.cards hr {
  border: 0;
  border-top: 1px solid var(--nexus-border);
  margin: 0.75rem 0;
}

/* Tabs (#616) */
.md-typeset .tabbed-set {
  border: 1px solid var(--nexus-border);
  border-radius: 8px;
  background-color: var(--nexus-surface);
  margin: 1.5rem 0;
  overflow: hidden;
  box-shadow: none;
}

.md-typeset .tabbed-labels {
  display: flex;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--nexus-border);
  background-color: var(--nexus-canvas-alt);
  padding: 0.25rem 0.35rem 0;
  gap: 0.25rem;
  box-shadow: none;
}

.md-typeset .tabbed-labels > label {
  flex: 1 1 auto;
  text-align: center;
  color: var(--nexus-text-secondary);
  font-weight: 500;
  font-size: 0.875rem;
  padding: 0.55rem 0.85rem;
  cursor: pointer;
  border: none;
  border-bottom: 2px solid transparent;
  border-radius: 6px 6px 0 0;
  transition: all 0.15s ease;
  white-space: nowrap;
  margin: 0;
}

.md-typeset .tabbed-labels > label:hover {
  color: var(--nexus-text-primary);
  background-color: var(--nexus-surface-hover);
}

.md-typeset .tabbed-labels > .tabbed-labels--active,
.md-typeset input:checked + label {
  color: var(--nexus-accent-accessible) !important;
  border-bottom: 2px solid var(--nexus-accent) !important;
  font-weight: 600;
  background-color: var(--nexus-surface);
}

.md-typeset .tabbed-button {
  display: none !important;
}

.md-typeset .tabbed-content {
  padding: 1.25rem;
}

.md-typeset .tabbed-block > :first-child {
  margin-top: 0;
}

.md-typeset .tabbed-block > :last-child {
  margin-bottom: 0;
}

/* Ordinary Markdown Tables (#618, #616) */
.md-typeset__table {
  display: block;
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 1.5rem 0;
  border-radius: 8px;
  border: 1px solid var(--nexus-border);
  background-color: transparent;
}

.md-typeset table:not([class]) {
  display: table;
  border-collapse: collapse;
  border-spacing: 0;
  width: 100%;
  border: none;
  background-color: transparent;
}

.md-typeset table:not([class]) th {
  background-color: transparent;
  color: var(--nexus-text-primary);
  font-weight: 600;
  font-size: 0.875rem;
  border-bottom: 1px solid var(--nexus-border-strong);
  padding: 0.75rem 1rem;
  text-align: left;
}

.md-typeset table:not([class]) td {
  border-bottom: 1px solid var(--nexus-border);
  padding: 0.75rem 1rem;
  color: var(--nexus-text-secondary);
  font-size: 0.875rem;
  background-color: transparent;
}

.md-typeset table:not([class]) tr:last-child td {
  border-bottom: none;
}

.md-typeset table:not([class]) tbody tr:hover td {
  background-color: var(--nexus-surface-hover);
}

/* Admonitions & Collapsible Details (#618, #616) */
.md-typeset .admonition,
.md-typeset details {
  background-color: var(--nexus-surface) !important;
  border: 1px solid var(--nexus-border) !important;
  border-left: 4px solid var(--nexus-accent) !important;
  border-radius: 6px;
  box-shadow: none;
  padding: 0 1rem;
  margin: 1.25rem 0;
  overflow: hidden;
}

.md-typeset .admonition-title,
.md-typeset summary {
  display: flex !important;
  align-items: center !important;
  background-color: transparent !important;
  color: var(--nexus-text-primary) !important;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  padding: 0.75rem 0.5rem !important;
  position: relative;
  user-select: none;
}

.md-typeset .admonition-title::before,
.md-typeset summary::before {
  position: static !important;
  display: inline-block !important;
  width: 1.15rem !important;
  height: 1.15rem !important;
  margin-right: 0.65rem !important;
  flex-shrink: 0 !important;
  transform: none !important;
  align-self: center !important;
}

.md-typeset summary::after {
  position: static !important;
  display: inline-block !important;
  margin-left: auto !important;
  flex-shrink: 0 !important;
  align-self: center !important;
}

.md-typeset details[open] > summary {
  border-bottom: 1px solid var(--nexus-border);
  margin-bottom: 0.75rem !important;
}

.md-typeset details > :not(summary),
.md-typeset .admonition > :not(.admonition-title) {
  padding-bottom: 0.75rem;
}

.md-typeset details > :not(summary):last-child,
.md-typeset .admonition > :not(.admonition-title):last-child {
  margin-bottom: 0;
}

.md-typeset .admonition.note,
.md-typeset details.note,
.md-typeset .admonition.info,
.md-typeset details.info {
  border-left-color: var(--nexus-status-info) !important;
}

.md-typeset .admonition.note > .admonition-title::before,
.md-typeset details.note > summary::before,
.md-typeset .admonition.info > .admonition-title::before,
.md-typeset details.info > summary::before {
  background-color: var(--nexus-status-info) !important;
}

.md-typeset .admonition.warning,
.md-typeset details.warning {
  border-left-color: var(--nexus-status-warning) !important;
}

.md-typeset .admonition.warning > .admonition-title::before,
.md-typeset details.warning > summary::before {
  background-color: var(--nexus-status-warning) !important;
}

.md-typeset .admonition.danger,
.md-typeset details.danger,
.md-typeset .admonition.failure,
.md-typeset details.failure {
  border-left-color: var(--nexus-status-danger) !important;
}

.md-typeset .admonition.danger > .admonition-title::before,
.md-typeset details.danger > summary::before,
.md-typeset .admonition.failure > .admonition-title::before,
.md-typeset details.failure > summary::before {
  background-color: var(--nexus-status-danger) !important;
}

.md-typeset .admonition.tip,
.md-typeset details.tip,
.md-typeset .admonition.success,
.md-typeset details.success {
  border-left-color: var(--nexus-status-success) !important;
}

.md-typeset .admonition.tip > .admonition-title::before,
.md-typeset details.tip > summary::before,
.md-typeset .admonition.success > .admonition-title::before,
.md-typeset details.success > summary::before {
  background-color: var(--nexus-status-success) !important;
}

/* ==========================================================================
   Homepage Layout (#558)
   ========================================================================== */

.nexus-hero {
  padding: 2rem 0 1.5rem;
  position: relative;
  overflow: hidden;
}

.nexus-hero__signature {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
  color: var(--nexus-text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
}

.nexus-hero__title {
  font-size: 2.25rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.2;
  color: var(--nexus-text-primary);
  margin: 0 0 1rem;
}

.nexus-hero__desc {
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--nexus-text-secondary);
  max-width: 44rem;
  margin: 0 0 1.75rem;
}

.nexus-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  position: relative;
  z-index: 1;
}

.nexus-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.25rem;
  border-radius: 6px;
  font-weight: 500;
  font-size: 0.95rem;
  text-decoration: none !important;
  transition: all 0.15s ease;
}

.nexus-btn--primary {
  background-color: var(--nexus-accent);
  color: #FFFFFF !important;
  border: 1px solid transparent;
}

.nexus-btn--primary:hover {
  background-color: var(--nexus-accent-hover);
}

.nexus-btn--secondary {
  background-color: var(--nexus-surface);
  color: var(--nexus-text-primary) !important;
  border: 1px solid var(--nexus-border-strong);
}

.nexus-btn--secondary:hover {
  background-color: var(--nexus-surface-hover);
}

/* Subtle Nexus Node motif (#617) */
.nexus-node-bg {
  position: absolute;
  right: -20px;
  bottom: -20px;
  width: 280px;
  height: 280px;
  pointer-events: none;
  z-index: 0;
}

[data-md-color-scheme="default"] .nexus-node-bg {
  opacity: 0.65;
  color: #0058ba;
}

[data-md-color-scheme="default"] .nexus-node-bg circle {
  fill: #0188de;
}

[data-md-color-scheme="slate"] .nexus-node-bg {
  opacity: 0.14;
  color: currentColor;
}

.nexus-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}

.nexus-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background-color: var(--nexus-surface);
  border: 1px solid var(--nexus-border);
  border-radius: 8px;
  padding: 1.25rem;
  text-decoration: none !important;
  transition: border-color 0.15s ease, background-color 0.15s ease, transform 0.15s ease;
}

.nexus-card:hover {
  border-color: var(--nexus-border-strong);
  background-color: var(--nexus-surface-elevated);
  transform: translateY(-1px);
}

.nexus-card__eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--nexus-accent-accessible);
  margin-bottom: 0.5rem;
}

.nexus-card__title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--nexus-text-primary);
  margin: 0 0 0.5rem;
}

.nexus-card__desc {
  font-size: 0.875rem;
  color: var(--nexus-text-secondary);
  line-height: 1.5;
  margin: 0 0 1rem;
  flex-grow: 1;
}

.nexus-card__link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--nexus-accent-accessible);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.nexus-remember {
  background-color: var(--nexus-surface);
  border: 1px solid var(--nexus-border);
  border-radius: 8px;
  padding: 1.25rem;
  margin: 2rem 0;
}

.nexus-remember__title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--nexus-text-primary);
  margin-bottom: 0.75rem;
}

.nexus-remember__list {
  margin: 0;
  padding-left: 1.25rem;
  color: var(--nexus-text-secondary);
  font-size: 0.875rem;
  line-height: 1.6;
}

.nexus-status-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--nexus-text-secondary);
  margin-top: 1rem;
}

.nexus-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #16A34A;
  display: inline-block;
}

/* ==========================================================================
   Live Catalog (#560)
   ========================================================================== */

.nexus-live-catalog__controls {
  display: inline-flex;
  background-color: var(--nexus-surface);
  border: 1px solid var(--nexus-border);
  border-radius: 6px;
  padding: 3px;
  margin: 1rem 0 0.75rem;
  gap: 2px;
}

.nexus-live-catalog__currency {
  background: transparent;
  border: none;
  border-radius: 4px;
  padding: 0.4rem 0.85rem;
  color: var(--nexus-text-secondary);
  font-family: var(--nexus-font-sans);
  font-weight: 500;
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.15s ease;
}

.nexus-live-catalog__currency:hover {
  color: var(--nexus-text-primary);
}

.nexus-live-catalog__currency[aria-pressed="true"] {
  background-color: var(--nexus-accent);
  color: #FFFFFF !important;
  font-weight: 600;
}

.nexus-live-catalog__status {
  font-size: 0.85rem;
  color: var(--nexus-text-secondary);
  margin-bottom: 1.25rem;
}

.nexus-live-catalog__table-wrap {
  border: 1px solid var(--nexus-border);
  border-radius: 8px;
  overflow-x: auto;
  background-color: var(--nexus-surface);
  margin-bottom: 2rem;
}

.nexus-live-catalog__table {
  width: 100%;
  border-collapse: collapse;
  min-width: 58rem;
}

.nexus-live-catalog__table th {
  background-color: var(--nexus-surface-elevated);
  color: var(--nexus-text-primary);
  font-weight: 600;
  font-size: 0.85rem;
  padding: 0.75rem 0.85rem;
  text-align: left;
  border-bottom: 1px solid var(--nexus-border);
}

.nexus-live-catalog__table td {
  padding: 0.75rem 0.85rem;
  border-bottom: 1px solid var(--nexus-border);
  color: var(--nexus-text-primary);
  font-size: 0.85rem;
}

.nexus-live-catalog__table tbody tr:hover {
  background-color: var(--nexus-surface-hover);
}

.nexus-live-catalog__model-cell {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.nexus-live-catalog__model-name {
  font-weight: 500;
  color: var(--nexus-text-primary);
}

.nexus-live-catalog__model-id {
  font-family: var(--nexus-font-mono);
  font-size: 0.8em;
  color: var(--nexus-text-muted);
}

.nexus-live-catalog__price-cell {
  font-family: var(--nexus-font-mono);
  font-variant-numeric: tabular-nums;
}

.nexus-live-catalog__failure {
  background-color: var(--nexus-surface);
  border: 1px solid var(--nexus-border);
  border-left: 3px solid var(--nexus-status-danger);
  border-radius: 6px;
  padding: 1rem;
  color: var(--nexus-text-secondary);
}

/* ==========================================================================
   Footer (#561, #616)
   ========================================================================== */

[data-md-color-scheme="default"] .md-footer,
[data-md-color-scheme="default"] .md-footer-meta {
  background-color: #003A9E !important;
  border-top: none !important;
}

[data-md-color-scheme="slate"] .md-footer,
[data-md-color-scheme="slate"] .md-footer-meta {
  background-color: #0B132B !important;
  border-top: 1px solid var(--nexus-border) !important;
}

.md-footer-meta__inner {
  display: flex !important;
  justify-content: center !important;
  align-items: center !important;
  width: 100% !important;
  text-align: center !important;
}

.md-copyright {
  color: #FFFFFF !important;
  font-size: 0.85rem;
  padding: 1.25rem 0;
  text-align: center !important;
  width: 100% !important;
}

.md-copyright__highlight {
  display: inline-flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 0.4rem;
  color: #FFFFFF !important;
  text-align: center !important;
  width: 100% !important;
}

.md-copyright__highlight a,
.md-copyright a {
  color: #FFFFFF !important;
  text-decoration: none !important;
  font-weight: 500;
  transition: opacity 0.15s ease;
}

.md-copyright a:hover,
.md-copyright__highlight a:hover {
  color: #FFFFFF !important;
  opacity: 0.85;
  text-decoration: underline !important;
}

/* ==========================================================================
   404 System Page (#561)
   ========================================================================== */

.nexus-404 {
  text-align: center;
  padding: 4rem 1rem 3rem;
  max-width: 36rem;
  margin: 0 auto;
}

.nexus-404__code {
  font-size: 4.5rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--nexus-accent-accessible);
  line-height: 1;
  margin-bottom: 1rem;
}

.nexus-404__title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--nexus-text-primary);
  margin-bottom: 0.75rem;
}

.nexus-404__desc {
  font-size: 1rem;
  color: var(--nexus-text-secondary);
  line-height: 1.6;
  margin-bottom: 2rem;
}

.nexus-404__actions {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* ==========================================================================
   Responsive Breakpoints & 360px Mobile Support
   ========================================================================== */

@media (max-width: 37.5rem) {
  .nexus-hero__title {
    font-size: 1.75rem;
  }

  .nexus-hero__desc {
    font-size: 0.95rem;
  }

  .nexus-hero__actions {
    flex-direction: column;
  }

  .nexus-btn {
    width: 100%;
  }

  .nexus-node-bg {
    display: none;
  }

  .nexus-live-catalog__table {
    min-width: 48rem;
  }
}