/* ==========================================================================
   Page · K09 Patterns
   ========================================================================== */

/* ---- Intro + audience filter ------------------------------------------- */

.patterns-lead {
  margin-bottom: 28px;
}

.audience-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.audience-filters .chip {
  padding: 0 14px;
}

/* ---- Pattern lines ------------------------------------------------------ */

.pattern-section {
  padding-block: 48px;
}

.pattern-count {
  margin-bottom: 24px;
}

.pattern-list {
  display: grid;
  gap: 20px;
}

.pattern {
  border: 1px solid var(--line-strong);
  background: var(--canvas);
}

.pattern__head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px 20px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.pattern__name {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 14px;
}

.pattern__code {
  font: 500 12px/1 var(--f-mono);
  color: var(--accent-text);
}

.pattern__title {
  margin: 0;
  font: 700 26px/1.05 var(--f-display);
  text-transform: uppercase;
}

.pattern__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font: 400 12px/1 var(--f-mono);
  color: var(--ink-2);
}

.pattern__demo {
  font-weight: 500;
}

.pattern__scroll {
  overflow-x: auto;
}

.pattern__steps {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(190px, 1fr);
  position: relative;
  margin: 0;
  padding: 20px 20px 22px;
  list-style: none;
}

.pattern__step {
  position: relative;
  padding-right: 16px;
}

/* the conveyor line behind the station badges */
.pattern__step::before {
  content: "";
  position: absolute;
  left: 0;
  right: 16px;
  top: 12px;
  height: 1px;
  background: var(--line-strong);
}

.pattern__badge {
  display: block;
  position: relative;
  width: max-content;
  min-width: 40px;
  height: 26px;
  margin-bottom: 12px;
  padding: 0 6px;
  background: var(--ink);
  color: var(--canvas);
  font: 500 11px/26px var(--f-mono);
  text-align: center;
}

/* last station = hand-over */
.pattern__step:last-child .pattern__badge {
  background: var(--action);
  color: var(--action-ink);
}

.pattern__step-title {
  margin-bottom: 4px;
  font: 600 16px/1.3 var(--f-text);
}

.pattern__step-text {
  font-size: 14px;
  line-height: 1.45;
  color: var(--ink-2);
}

/* ---- System states ------------------------------------------------------ */

.state-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
  gap: 12px;
}

.state-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 200px;
  padding: 20px;
  border: 1px solid var(--line-strong);
  background: var(--canvas);
}

.state-card__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.state-card__key {
  font: 500 12px/1 var(--f-mono);
  letter-spacing: .06em;
}

/* .signal-mark: shape + color, readable without color vision */
.state-card__signal {
  --mark-size: 12px;
}

.state-card__title {
  font: 700 22px/1.1 var(--f-display);
  text-transform: uppercase;
}

.state-card__text {
  flex: 1;
  font-size: 14px;
  color: var(--ink-2);
}

.state-card__action {
  font: 600 13px var(--f-text);
  text-transform: uppercase;
  letter-spacing: .04em;
}

/* ---- Focus & skip links ------------------------------------------------- */

.focus-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
  gap: 24px;
  align-items: start;
}

.skip-demo {
  padding: 16px;
  border: 1px solid var(--line-strong);
}

/* skip link specimen, permanently drawn with its focus ring */
.skip-demo__link,
.skip-demo__link:hover {
  color: var(--canvas);
}

.skip-demo__link {
  display: inline-block;
  padding: 12px 16px;
  background: var(--ink);
  text-decoration: none;
  font: 600 14px var(--f-text);
  outline: 3px solid var(--action);
  outline-offset: 3px;
}

.skip-demo__note {
  margin: 16px 0 0;
  font-size: 14px;
  color: var(--ink-2);
}

.focus-rules {
  margin: 0;
  border-top: 1.5px solid var(--ink);
}

.focus-rules > div {
  display: grid;
  grid-template-columns: 48px 1fr;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-strong);
}

.focus-rules dt {
  font: 500 13px var(--f-mono);
  color: var(--muted);
}

.focus-rules dd {
  margin: 0;
}