/* Layouts for the home, library, about, 3D model and 404 pages.
   Shared colours, controls, header, footer and focus styles live in thinkpad.css. */

/* ---------------------------------------------------------------------------
   Home: hero and notice
   --------------------------------------------------------------------------- */
.home-hero {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 2rem;
  padding: 1rem 0 2.5rem;
  margin-bottom: var(--spacing-xl);
  border-bottom: 1px solid var(--bezel-gray);
}

.home-hero-image {
  flex: 0 0 auto;
  display: block;
  width: 20rem;
  max-width: 100%;
  height: auto;
  border-radius: var(--border-radius-lg);
}

.home-hero-text {
  flex: 1 1 24rem;
  min-width: 0;
}

.home-hero h1 {
  margin: 0.35rem 0 1rem;
  font-size: clamp(2rem, 5vw, 2.6rem);
  line-height: 1.15;
}

.hero-lede {
  max-width: 42rem;
  margin: 0 0 0.75rem;
  font-size: 1.1rem;
}

.hero-lede strong {
  color: var(--text-primary);
}

.home-hero .page-actions {
  margin-top: var(--spacing-lg);
}

.home-notice {
  margin: 0 0 var(--spacing-xl);
}

/* ---------------------------------------------------------------------------
   Catalogue and library search
   --------------------------------------------------------------------------- */
.catalog-header {
  margin-bottom: var(--spacing-lg);
}

.catalog-header h2 {
  margin-bottom: var(--spacing-sm);
}

.catalog-header p {
  max-width: 48rem;
  color: var(--text-secondary);
}

.catalog-jumps ul,
.library-jumps ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
  margin: 0 0 var(--spacing-md);
  padding: 0;
  list-style: none;
}

.catalog-jumps a,
.library-jumps a {
  display: inline-block;
  padding-block: 0.4rem;
}

.page-filter {
  margin-block: var(--spacing-md) var(--spacing-lg);
  padding: var(--spacing-lg);
  border: 1px solid var(--bezel-gray);
  border-left: 3px solid var(--trackpoint-red);
  border-radius: var(--border-radius);
  background: var(--thinkpad-black);
}

.page-filter > label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 700;
}

.page-filter-row {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 0.75rem;
}

.page-filter-row input[type="search"] {
  flex: 1 1 10rem;
  width: 100%;
  min-width: 0;
  background: var(--thinkpad-dark);
  color: var(--text-primary);
}

.page-filter-help,
.filter-result-count {
  margin-top: var(--spacing-sm);
  font-size: 0.9rem;
}

.page-filter-help {
  color: var(--text-secondary);
}

.filter-result-count {
  font-variant-numeric: tabular-nums;
}

.filter-empty {
  margin-block: var(--spacing-lg);
  padding: var(--spacing-lg);
  border: 1px dashed var(--control-border);
  border-radius: var(--border-radius);
}

.filter-empty h2 {
  margin-bottom: 0.5rem;
  font-size: 1.2rem;
}

.filter-empty p + p {
  margin-top: 0.5rem;
  color: var(--text-secondary);
}

/* ---------------------------------------------------------------------------
   Machine cards. The heading link's ::after covers the card, so the whole card
   is clickable while the link's accessible name stays the machine name.
   --------------------------------------------------------------------------- */
.machine-group {
  margin: var(--spacing-xl) 0;
}

.group-title {
  margin-bottom: 1.25rem;
  padding-bottom: 0.45rem;
  border-bottom: 1px solid var(--bezel-gray);
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.machine-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 18rem), 1fr));
  gap: var(--spacing-lg);
  margin: 0;
  padding: 0;
  list-style: none;
}

.machine-card {
  position: relative;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--bezel-gray);
  border-radius: var(--border-radius-lg);
  background: var(--thinkpad-black);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.machine-card:hover {
  transform: translateY(-3px);
  border-color: var(--highlight-gray-hover);
  box-shadow: 0 8px 24px rgba(228, 0, 43, 0.15);
}

.machine-card:has(.machine-card-link:focus-visible) {
  outline: 3px solid var(--focus-color);
  outline-offset: 3px;
}

.machine-card:has(.machine-card-link:focus-visible) .machine-card-link {
  outline: none;
}

.machine-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.6rem var(--spacing-md);
  border-bottom: 2px solid var(--highlight-gray);
  border-radius: calc(var(--border-radius-lg) - 1px) calc(var(--border-radius-lg) - 1px) 0 0;
  background: var(--keyboard-gray);
}

.machine-card-title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  line-height: 1.4;
  overflow-wrap: anywhere;
}

.machine-card-link {
  color: var(--text-primary);
  text-decoration: none;
}

.machine-card-link::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--border-radius-lg);
}

.machine-card-link:hover,
.machine-card:hover .machine-card-link {
  color: var(--text-primary);
  text-decoration: underline;
  text-decoration-color: var(--trackpoint-red);
}

.machine-card-era {
  flex-shrink: 0;
  margin-top: 0.15rem;
  padding: 0.1rem 0.5rem;
  border-radius: 3px;
  background: var(--ibm-blue);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.machine-card-body {
  display: flow-root;
  flex: 1;
  padding: var(--spacing-md);
}

.machine-card-image {
  float: left;
  width: 6.25rem;
  height: auto;
  margin: 0.15rem 0.85rem 0.35rem 0;
  border-radius: var(--border-radius);
}

.machine-card-mt {
  margin-bottom: 0.3rem;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
}

.machine-card-blurb {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.5;
}

/* ---------------------------------------------------------------------------
   Home: further reading
   --------------------------------------------------------------------------- */
.home-next {
  margin-top: var(--spacing-xxl);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--bezel-gray);
}

.home-next h2 {
  margin-bottom: var(--spacing-md);
}

.explore-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 15rem), 1fr));
  gap: var(--spacing-md) var(--spacing-xl);
  margin: 0;
  padding: 0;
  list-style: none;
}

.explore-list li {
  padding-top: var(--spacing-sm);
  border-top: 2px solid var(--trackpoint-red);
}

.explore-list a {
  font-size: 1.05rem;
  font-weight: 700;
}

.explore-list p {
  margin-top: 0.3rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ---------------------------------------------------------------------------
   Library
   --------------------------------------------------------------------------- */
.library-reading-note,
.library-footer-note {
  margin-block: var(--spacing-md);
  color: var(--text-secondary);
}

.library-category {
  margin-block: var(--spacing-xl);
}

.library-category-heading {
  margin-bottom: var(--spacing-sm);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--bezel-gray);
  font-size: 1.35rem;
}

.library-category-count {
  color: var(--text-secondary);
  font-size: 0.85em;
  font-weight: 400;
  white-space: nowrap;
}

.library-category-intro {
  max-width: 48rem;
  margin-bottom: var(--spacing-lg);
  color: var(--text-secondary);
}

.library-list {
  display: grid;
  gap: var(--spacing-md);
  margin: 0;
  padding: 0;
  list-style: none;
}

.library-doc {
  padding: var(--spacing-md) var(--spacing-lg);
  border: 1px solid var(--bezel-gray);
  border-radius: var(--border-radius);
  background: var(--thinkpad-black);
  overflow-wrap: anywhere;
}

.library-doc h3 {
  margin-bottom: 0.35rem;
  font-size: 1.05rem;
  line-height: 1.45;
}

.library-doc h3 a {
  color: var(--text-primary);
}

.library-doc h3 a:hover {
  color: var(--link-hover);
}

.library-file-type {
  display: inline-block;
  margin-left: 0.25rem;
  padding: 0 0.35rem;
  border: 1px solid var(--control-border);
  border-radius: 3px;
  color: var(--text-secondary);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  vertical-align: 0.15em;
}

.library-doc-description {
  color: var(--text-secondary);
  font-size: 0.92rem;
}

.library-machines {
  margin-top: 0.35rem;
  font-size: 0.9rem;
}

.library-machines a {
  white-space: nowrap;
}

.library-doc-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem 0.5rem;
  margin-top: 0.45rem;
  color: var(--text-muted);
  font-size: 0.82rem;
}

.library-filename {
  font-family: var(--font-mono);
}

/* ---------------------------------------------------------------------------
   About
   --------------------------------------------------------------------------- */
.about-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(14rem, 18rem);
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
}

.about-content {
  max-width: 46rem;
}

.about-section {
  margin-bottom: var(--spacing-xxl);
}

.about-section h2 {
  margin-bottom: var(--spacing-md);
  font-size: 1.4rem;
}

.about-section > * + * {
  margin-top: var(--spacing-md);
}

.about-section p,
.about-section li {
  color: var(--text-secondary);
}

.about-section li strong {
  color: var(--text-primary);
}

.about-section ul,
.about-section ol,
.about-guide ol {
  padding-left: 1.35rem;
}

.about-section li + li,
.about-guide li + li {
  margin-top: 0.6rem;
}

.about-guide {
  position: sticky;
  top: calc(var(--header-offset) + 0.5rem);
  padding: var(--spacing-lg);
  border: 1px solid var(--bezel-gray);
  border-top: 3px solid var(--trackpoint-red);
  border-radius: var(--border-radius);
  background: var(--thinkpad-black);
}

.about-guide h2 {
  margin-bottom: var(--spacing-md);
  font-size: 1.15rem;
}

/* ---------------------------------------------------------------------------
   3D models
   --------------------------------------------------------------------------- */
.mw-experimental {
  margin-bottom: var(--spacing-lg);
}

.mw-experimental h2 {
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  font-size: 1.05rem;
}

.mw-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(18rem, 22rem);
  gap: var(--spacing-lg);
  align-items: start;
}

/* Without scripting the viewer can never start, so show only the notice and links. */
@media (scripting: none) {
  .mw-wrap {
    display: none;
  }
}

.mw-view,
.mw-panel,
.mw-card {
  min-width: 0;
}

.mw-status-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: var(--spacing-sm);
}

.mw-status {
  flex: 1 1 18rem;
  font-size: 0.9rem;
}

.mw-selection {
  margin-top: var(--spacing-md);
}

.models-page #viewport {
  position: relative;
  height: clamp(20rem, 65vh, 44rem);
  overflow: hidden;
  border: 1px solid var(--bezel-gray);
  border-radius: var(--border-radius);
  background: #15171a;
}

.models-page #viewport canvas {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
}

.mw-placeholder {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--spacing-md);
  padding: clamp(1rem, 4vw, 3rem);
  background: #15171a;
  color: var(--text-secondary);
  text-align: center;
}

.mw-panel {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.mw-card {
  padding: var(--spacing-md);
  border: 1px solid var(--bezel-gray);
  border-radius: var(--border-radius);
  background: var(--thinkpad-black);
  font-size: 0.9rem;
}

.mw-card h2,
.mw-card legend {
  color: var(--text-primary);
  font-size: 0.95rem;
  font-weight: 700;
}

.mw-card h2 {
  margin-bottom: 0.65rem;
}

.mw-card legend {
  padding-inline: 0.3rem;
}

.mw-card > label {
  display: block;
  margin-bottom: 0.4rem;
}

.mw-card select {
  width: 100%;
  max-width: 100%;
}

.mw-card input[type="range"] {
  width: 100%;
  min-height: 2rem;
}

.mw-card .mw-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.mw-row output,
.mw-count,
.part-order {
  font-variant-numeric: tabular-nums;
}

.mw-note,
.mw-count,
.part-order,
.mw-list-placeholder {
  color: var(--text-secondary);
}

.mw-note {
  margin-block: 0.6rem;
  font-size: 0.85rem;
  line-height: 1.6;
}

.mw-spec-meta {
  margin-top: 0.75rem;
  overflow-wrap: anywhere;
}

.mw-spec-meta p + p {
  margin-top: 0.5rem;
}

.mw-camera-buttons {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
}

.mw-camera-buttons button {
  padding-inline: 0.5rem;
}

.mw-toggles {
  display: grid;
  gap: 0.4rem;
  margin-block: var(--spacing-md);
}

.mw-toggles label {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  min-height: 2rem;
}

.models-page #part-list,
.models-page #feature-list {
  max-height: 22rem;
  margin: 0;
  padding: 0.25rem;
  overflow-y: auto;
  list-style: none;
}

.models-page #part-list li,
.models-page #feature-list li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.25rem;
  border-radius: var(--border-radius);
}

.models-page li.selected {
  background: #21344b;
  box-shadow: inset 3px 0 var(--thinkvantage-blue);
}

.models-page .part-name {
  flex: 1;
  min-width: 0;
  padding: 0.45rem 0.3rem;
  border: 0;
  background: transparent;
  color: var(--text-primary);
  font: inherit;
  text-align: left;
  overflow-wrap: anywhere;
}

.models-page .part-name:hover {
  text-decoration: underline;
}

.mw-features {
  margin-top: var(--spacing-md);
  padding-top: 0.5rem;
  border-top: 1px solid var(--bezel-gray);
}

.mw-features summary {
  padding-block: 0.5rem;
}

.models-page #selection dl {
  display: grid;
  grid-template-columns: minmax(5rem, 1fr) minmax(0, 2fr);
  gap: 0.4rem 0.75rem;
}

.models-page #selection dt {
  color: var(--text-secondary);
}

.models-page #selection dd {
  margin: 0;
  overflow-wrap: anywhere;
}

.models-page #selection p {
  margin-top: 0.75rem;
}

.mw-references {
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--bezel-gray);
}

.mw-references h2 {
  margin-bottom: var(--spacing-sm);
  font-size: 1.3rem;
}

.mw-references ul {
  margin-top: var(--spacing-md);
  padding-left: 1.3rem;
}

.mw-references li {
  margin-block: 0.6rem;
}

/* ---------------------------------------------------------------------------
   404
   --------------------------------------------------------------------------- */
.not-found {
  max-width: 54rem;
  margin: var(--spacing-lg) auto;
}

.not-found h1 {
  margin-bottom: var(--spacing-md);
  font-size: clamp(2rem, 5vw, 3rem);
}

.not-found .page-intro {
  color: var(--text-secondary);
}

.not-found-path {
  font-family: var(--font-mono);
  color: var(--text-primary);
  overflow-wrap: anywhere;
}

.error-terminal {
  margin-block: var(--spacing-xl);
  padding: clamp(1rem, 4vw, 2rem);
  border: 1px solid var(--bezel-gray);
  border-left: 4px solid var(--trackpoint-red);
  border-radius: var(--border-radius);
  background: var(--thinkpad-black);
  font-family: var(--font-mono);
  overflow-wrap: anywhere;
}

.error-terminal p + p {
  margin-top: 1rem;
}

.terminal-code,
.terminal-cursor {
  color: var(--led-amber);
}

.terminal-code {
  font-size: 1.6rem;
  font-weight: 700;
}

.recovery-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.recovery-grid h2 {
  margin-bottom: 0.5rem;
  font-size: 1.2rem;
}

.recovery-grid p {
  margin-bottom: 0.6rem;
  color: var(--text-secondary);
}

.recovery-note {
  margin-top: var(--spacing-lg);
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* ---------------------------------------------------------------------------
   Narrow screens, motion and print
   --------------------------------------------------------------------------- */
@media (max-width: 960px) {
  .mw-wrap,
  .about-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .mw-panel {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
  }

  .about-guide {
    position: static;
  }
}

@media (max-width: 600px) {
  .page-header {
    padding-block: var(--spacing-lg);
    text-align: left;
  }

  .home-hero {
    gap: 1.25rem;
    padding-top: 0;
  }

  .home-hero-image {
    width: 15rem;
    margin-inline: auto;
  }

  .home-hero-text {
    flex-basis: 100%;
  }

  .page-filter {
    padding: var(--spacing-md);
  }

  .library-doc {
    padding: var(--spacing-md);
  }

  .mw-panel,
  .recovery-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .models-page #viewport {
    height: 55vh;
    min-height: 18rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .machine-card,
  .machine-card:hover {
    transform: none;
  }
}

@media print {
  .page-filter,
  .catalog-jumps,
  .library-jumps,
  #catalog-search-fallback,
  #library-search-fallback,
  .home-hero .page-actions,
  .mw-wrap {
    display: none !important;
  }

  .machine-card,
  .library-doc {
    break-inside: avoid;
  }
}