/* Desktop patterns from the RoadTogether Web canvas, built on the tokens: panels, wells, figures, tables, filters and keys. */
@layer components {
  /* Link: inline accent text that underlines under the pointer. */
  .rtg-link {
    color: var(--link);
    font-weight: 600;
    text-decoration: none;
    text-underline-offset: calc(var(--space-1) + var(--stroke-hairline));
    transition: color var(--duration-hover) var(--ease-standard);
  }

  @media (hover: hover) {
    .rtg-link:hover {
      color: var(--link-hover);
      text-decoration: underline;
    }
  }

  .rtg-link:active { color: var(--link-press); }

  /* Panel: a hairline surface with a head row (display caps title, mono meta, actions) over its content. */
  .rtg-panel {
    display: flex;
    flex-direction: column;
    min-width: 0;
    background: var(--surface);
    border: var(--stroke-hairline) solid var(--border-hairline);
    border-radius: var(--radius-card);
    box-shadow: var(--elevation-1);
  }

  .rtg-panel--low { background: var(--surface-low); }

  .rtg-panel--glass {
    background: var(--surface-glass-bar);
    -webkit-backdrop-filter: blur(var(--blur-bar)) saturate(var(--saturation-bar));
    backdrop-filter: blur(var(--blur-bar)) saturate(var(--saturation-bar));
  }

  .rtg-panel__head {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    min-height: calc(var(--touch-target) + var(--space-5));
    padding: var(--space-5) var(--pad-card);
    border-bottom: var(--stroke-hairline) solid var(--divider);
  }

  .rtg-panel__head--compact {
    min-height: calc(var(--touch-target) + var(--space-3));
    padding: var(--space-4) var(--space-5);
  }

  .rtg-panel__title {
    margin: 0;
    color: var(--text-primary);
    font-family: var(--font-display);
    font-size: var(--fs-step-row);
    font-weight: 400;
    letter-spacing: var(--tracking-caps);
    line-height: var(--lh-tight);
    text-transform: uppercase;
  }

  .rtg-panel__meta {
    margin-left: auto;
    color: var(--text-faint);
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    font-weight: 500;
    line-height: var(--lh-snug);
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
  }

  .rtg-panel__actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-left: auto;
  }

  .rtg-panel__meta + .rtg-panel__actions { margin-left: 0; }

  .rtg-panel__body {
    display: flex;
    flex-direction: column;
    gap: var(--gap-normal);
    padding: var(--pad-card);
  }

  .rtg-panel__foot {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-top: auto;
    padding: var(--space-5) var(--pad-card);
    border-top: var(--stroke-hairline) solid var(--divider);
    border-radius: 0 0 var(--radius-card) var(--radius-card);
    background: var(--surface-low);
  }

  /* Well: the sunken ground under maps, traces and cars, plain, on the telemetry grid or under the track glow. */
  .rtg-well {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-card);
    background: var(--surface-lowest);
  }

  .rtg-well--grid {
    background-image:
      linear-gradient(var(--grid-line) var(--grid-line-width), transparent var(--grid-line-width)),
      linear-gradient(90deg, var(--grid-line) var(--grid-line-width), transparent var(--grid-line-width));
    background-position: calc(var(--grid-line-width) * -1) calc(var(--grid-line-width) * -1);
    background-size: var(--grid-cell) var(--grid-cell);
  }

  .rtg-well--glow { background: var(--grad-track-glow), var(--surface-lowest); }

  .rtg-well--framed {
    border: var(--stroke-hairline) solid var(--border-hairline);
    border-radius: var(--radius-media);
  }

  .rtg-well__hatch {
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(var(--hatch-angle), var(--divider) 0 var(--hatch-dense-stripe), transparent var(--hatch-dense-stripe) var(--hatch-dense-period));
    pointer-events: none;
  }

  /* Figure: a tracked caption over a mono reading, with its unit in small caps. */
  .rtg-figure {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    min-width: 0;
  }

  .rtg-figure__label {
    color: var(--text-faint);
    font-family: var(--font-sans);
    font-size: var(--fs-xxxs);
    font-weight: 800;
    letter-spacing: var(--tracking-label);
    line-height: var(--lh-normal);
    text-transform: uppercase;
  }

  .rtg-figure__value {
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: var(--fs-step-hero);
    font-weight: 500;
    letter-spacing: var(--tracking-tight);
    line-height: var(--lh-tight);
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
  }

  .rtg-figure__unit {
    margin-left: var(--space-2);
    color: var(--text-muted);
    font-family: var(--font-sans);
    font-size: var(--fs-xs);
    font-weight: 700;
    letter-spacing: var(--tracking-caps);
    text-transform: uppercase;
  }

  .rtg-figure--accent .rtg-figure__value { color: var(--text-accent); }
  .rtg-figure--data .rtg-figure__value { color: var(--text-data); }
  .rtg-figure--go .rtg-figure__value { color: var(--text-go); }
  .rtg-figure--danger .rtg-figure__value { color: var(--text-danger); }
  .rtg-figure--hero .rtg-figure__value { font-size: var(--fs-xxxl); }

  /* Table: tracked headers, hairline rows, a hover wash and the accent rail on the selected row. */
  .rtg-table {
    width: 100%;
    border-collapse: collapse;
  }

  .rtg-table th {
    padding: 0 var(--space-4) var(--space-3);
    border-bottom: var(--stroke-hairline) solid var(--divider-strong);
    color: var(--text-faint);
    font-family: var(--font-sans);
    font-size: var(--fs-xxxs);
    font-weight: 800;
    letter-spacing: var(--tracking-label);
    line-height: var(--lh-normal);
    text-align: left;
    text-transform: uppercase;
    white-space: nowrap;
  }

  .rtg-table td {
    height: calc(var(--touch-target) + var(--space-4));
    padding: 0 var(--space-4);
    border-bottom: var(--stroke-hairline) solid var(--divider);
    color: var(--text-body);
    font-family: var(--font-sans);
    font-size: var(--fs-sm);
    line-height: var(--lh-snug);
    white-space: nowrap;
    transition: background-color var(--duration-hover) var(--ease-standard);
  }

  .rtg-table tbody tr:last-child td { border-bottom: 0; }
  .rtg-table :is(th, td).rtg-table__num { text-align: right; }

  .rtg-table td.rtg-table__mono {
    font-family: var(--font-mono);
    font-size: var(--fs-step-row);
    font-weight: 500;
    font-variant-numeric: tabular-nums;
  }

  .rtg-table__title {
    color: var(--text-primary);
    font-size: var(--fs-sm);
    font-weight: 700;
    line-height: var(--lh-snug);
  }

  .rtg-table__sub {
    color: var(--text-faint);
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    line-height: var(--lh-normal);
  }

  .rtg-table tr.is-selected td { background: var(--primary-container); }
  .rtg-table tr.is-selected td:first-child { box-shadow: inset var(--rail-width) 0 0 var(--accent); }
  .rtg-table tr.rtg-table__link { cursor: pointer; }

  @media (hover: hover) {
    .rtg-table tbody tr:hover:not(.is-selected) td { background: var(--state-hover); }
  }

  .rtg-table tr.rtg-table__link:focus-visible {
    outline: none;
    box-shadow: none;
  }

  .rtg-table tr.rtg-table__link:focus-visible td { box-shadow: inset 0 0 0 var(--stroke-focus-ring) var(--border-focus); }

  /* FilterOption: a full-width toggle row in a filter rail, with an optional glyph and a mono count. */
  .rtg-filter-option {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    width: 100%;
    min-height: var(--control-height);
    padding: 0 var(--space-4);
    border: var(--stroke-hairline) solid transparent;
    border-radius: var(--radius-control);
    background: none;
    color: var(--text-body);
    font-family: var(--font-sans);
    font-size: var(--fs-sm);
    font-weight: 600;
    line-height: var(--lh-snug);
    text-align: left;
    cursor: pointer;
    transition:
      background-color var(--duration-hover) var(--ease-standard),
      border-color var(--duration-hover) var(--ease-standard),
      color var(--duration-hover) var(--ease-standard);
  }

  .rtg-filter-option .rtg-icon {
    --icon-size: var(--icon-inline);
    color: var(--text-faint);
  }

  .rtg-filter-option__label {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .rtg-filter-option__count {
    margin-left: auto;
    color: var(--text-faint);
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    font-weight: 500;
    font-variant-numeric: tabular-nums;
  }

  @media (hover: hover) {
    .rtg-filter-option:hover:not([aria-pressed="true"]) {
      background: var(--state-hover);
      color: var(--text-primary);
    }
  }

  .rtg-filter-option:active:not([aria-pressed="true"]) { background: var(--state-press); }

  .rtg-filter-option[aria-pressed="true"] {
    border-color: var(--border-accent);
    background: var(--primary-container);
    color: var(--on-primary-container);
  }

  .rtg-filter-option[aria-pressed="true"] .rtg-icon { color: inherit; }

  .rtg-filter-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
  }

  .rtg-filter-group > .rtg-list-label { padding: 0 var(--space-4) var(--space-3); }

  /* Kbd: a keycap naming a shortcut. */
  .rtg-kbd {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: calc(var(--space-6) + var(--space-1));
    height: calc(var(--space-6) + var(--space-1));
    padding: 0 var(--space-2);
    border: var(--stroke-hairline) solid var(--border-subtle);
    border-radius: var(--radius-xs);
    background: var(--surface-low);
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: var(--fs-xxs);
    font-weight: 500;
    line-height: 1;
  }

  .rtg-shortcuts {
    display: inline-flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-2);
    color: var(--text-faint);
    font-size: var(--fs-xs);
    line-height: var(--lh-normal);
  }

  /* Swatch and dot: the keys of a legend. Set their ink with --key. */
  .rtg-swatch,
  .rtg-dot {
    --key: var(--text-primary);
    display: inline-block;
    flex: none;
    background: var(--key);
  }

  .rtg-swatch {
    width: var(--space-4);
    height: var(--space-4);
    border-radius: var(--radius-xs);
  }

  .rtg-dot {
    width: var(--space-3);
    height: var(--space-3);
    border-radius: 50%;
  }

  .rtg-legend {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-3) var(--space-5);
  }

  .rtg-legend__item {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    color: var(--text-body);
    font-size: var(--fs-step-row);
    font-weight: 700;
    line-height: var(--lh-snug);
  }

  /* GlassChip: a blurred readout floating over a map or a video. */
  .rtg-glass-chip {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-3) var(--space-4);
    border: var(--stroke-hairline) solid var(--border-subtle);
    border-radius: var(--radius-md);
    background: var(--surface-glass-bar);
    -webkit-backdrop-filter: blur(var(--blur-card)) saturate(var(--saturation-card));
    backdrop-filter: blur(var(--blur-card)) saturate(var(--saturation-card));
  }

  .rtg-glass-chip__rule {
    align-self: stretch;
    width: var(--stroke-hairline);
    background: var(--divider-strong);
  }

  /* MapTools: the stacked stroked icon buttons in a map or media corner. */
  .rtg-map-tools {
    position: absolute;
    top: var(--space-5);
    right: var(--space-5);
    z-index: 2;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
  }

  /* Hint: a quiet line under a list or a control, with keycaps in it. */
  .rtg-hint {
    color: var(--text-faint);
    font-size: var(--fs-xs);
    line-height: var(--lh-normal);
  }
}