/* =====================================================================
   Diagnosis diagram component
   Reusable responsive diagram shell (Jinja: components/diagnosis-diagram.html)

   Fixed dark palette, scoped to .diagnosis-diagram and never touching
   :root/tokens.css. This matches the visual system already established
   across the site's existing diagram PNGs (bg #1a1810 sampled directly
   from those images) rather than either of the site's light/dark
   sitewide themes — the diagrams are their own sub-brand. Icons are
   Lucide (static/icons/lucide/, ISC license), thin-line/stroke-based,
   not the site's Material Symbols set.
   ===================================================================== */

.diagnosis-diagram {
  --dg-bg: #1a1810;
  --dg-card: #221f16;
  --dg-text: #f4efe3;
  --dg-muted: #948d7c;
  --dg-border: #3a3527;
  --dg-accent: #f4efe3;
  --dg-radius: 16px;

  position: relative;
  background: var(--dg-bg);
  color: var(--dg-text);
  border: 1px solid var(--dg-border);
  border-radius: var(--dg-radius);
  padding: var(--space-6);
  margin: var(--space-4) 0;
}

@media (min-width: 48rem) {
  .diagnosis-diagram {
    padding: var(--space-8);
  }
}

@media (min-width: 64rem) {
  .diagnosis-diagram {
    padding: var(--space-12);
  }
}

.diagnosis-diagram .diagram-icon {
  width: 22px;
  height: 22px;
  stroke: currentColor;
  stroke-width: 1.5;
  fill: none;
  flex-shrink: 0;
}

.diagnosis-diagram .dg-visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

/* Sections ------------------------------------------------------------ */

.diagnosis-diagram .dg-section {
  padding-block: var(--space-8);
}

.diagnosis-diagram .dg-section:first-child {
  padding-top: 0;
}

.diagnosis-diagram .dg-section:last-child {
  padding-bottom: 0;
}

.diagnosis-diagram .dg-section + .dg-section {
  border-top: 1px solid var(--dg-border);
}

.diagnosis-diagram .dg-section-head {
  margin-bottom: var(--space-6);
}

.diagnosis-diagram .dg-eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--dg-muted);
  margin: 0 0 var(--space-2);
}

.diagnosis-diagram h2 {
  font-family: var(--font-display);
  color: var(--dg-text);
  font-size: var(--fs-lg);
  line-height: var(--lh-snug);
  margin: 0 0 var(--space-2);
}

@media (min-width: 48rem) {
  .diagnosis-diagram h2 {
    font-size: var(--fs-xl);
  }
}

@media (min-width: 64rem) {
  .diagnosis-diagram h2 {
    font-size: var(--fs-2xl);
  }
}

.diagnosis-diagram .dg-subtitle {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--dg-muted);
  margin: 0;
}

.diagnosis-diagram .dg-card-title {
  font-family: var(--font-body);
  font-size: var(--fs-md);
  font-weight: 500;
  color: var(--dg-text);
  margin: var(--space-3) 0 var(--space-2);
}

/* Card ------------------------------------------------------------ */

.diagnosis-diagram .dg-card {
  background: var(--dg-card);
  border: 1px solid var(--dg-border);
  border-radius: var(--dg-radius);
  padding: var(--space-6);
}

.diagnosis-diagram .dg-evidence-sublist {
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--dg-muted);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

/* Section 1 — evidence grid + hub -------------------------------- */

.diagnosis-diagram .dg-s1-body {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.diagnosis-diagram .dg-evidence-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.diagnosis-diagram .dg-hub-zone {
  display: none;
}

.diagnosis-diagram .dg-mobile-connector {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.diagnosis-diagram .dg-connector-rule {
  flex: 0 0 1.5rem;
  height: 1px;
  background: var(--dg-border);
}

.diagnosis-diagram .dg-connector-chevron {
  width: 1rem;
  height: 1rem;
  color: var(--dg-muted);
  transform: rotate(90deg);
  flex-shrink: 0;
}

.diagnosis-diagram .dg-connector-label {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--dg-muted);
  flex: 1 1 auto;
  min-width: 0;
}

@media (min-width: 48rem) {
  .diagnosis-diagram .dg-evidence-grid {
    grid-template-columns: 1fr 1fr;
  }

  .diagnosis-diagram .dg-mobile-connector {
    display: none;
  }

  .diagnosis-diagram .dg-hub-zone {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    padding-top: var(--space-2);
  }

  .diagnosis-diagram .dg-connector-line {
    width: 1px;
    height: var(--space-8);
    background: var(--dg-border);
  }

  .diagnosis-diagram .dg-curves {
    display: none;
  }

  .diagnosis-diagram .dg-hub {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    background: var(--dg-card);
    border: 1px solid var(--dg-border);
    color: var(--dg-accent);
  }
}

@media (min-width: 64rem) {
  .diagnosis-diagram .dg-s1-body {
    flex-direction: row;
    align-items: stretch;
    gap: 0;
  }

  .diagnosis-diagram .dg-evidence-grid {
    flex: 1;
    grid-template-columns: 1fr 1fr;
    grid-auto-rows: 1fr;
    align-content: center;
  }

  .diagnosis-diagram .dg-hub-zone {
    position: relative;
    flex: 0 0 8rem;
    flex-direction: row;
    justify-content: center;
    padding-top: 0;
  }

  .diagnosis-diagram .dg-connector-line {
    display: none;
  }

  .diagnosis-diagram .dg-curves {
    display: block;
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
  }

  .diagnosis-diagram .dg-curves path {
    fill: none;
    stroke: var(--dg-border);
    stroke-width: 1;
    vector-effect: non-scaling-stroke;
  }

  .diagnosis-diagram .dg-hub {
    position: relative;
    z-index: 1;
    align-self: center;
  }
}

/* Timelines (Sections 2 & 3) -------------------------------------- */

.diagnosis-diagram .dg-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.diagnosis-diagram .dg-timeline-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-4);
  position: relative;
  padding-bottom: var(--space-6);
}

.diagnosis-diagram .dg-timeline-item:last-child {
  padding-bottom: 0;
}

.diagnosis-diagram .dg-timeline-item:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 1.25rem;
  top: 2.5rem;
  bottom: 0;
  width: 1px;
  background: var(--dg-border);
}

.diagnosis-diagram .dg-step-badge {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background: var(--dg-card);
  border: 1px solid var(--dg-border);
  color: var(--dg-accent);
  flex-shrink: 0;
}

.diagnosis-diagram .dg-step-number {
  position: absolute;
  bottom: -0.4rem;
  right: -0.4rem;
  width: 1.375rem;
  height: 1.375rem;
  border-radius: 50%;
  background: var(--dg-bg);
  border: 1px solid var(--dg-border);
  color: var(--dg-muted);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  display: flex;
  align-items: center;
  justify-content: center;
}

.diagnosis-diagram .dg-timeline-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding-top: var(--space-1);
}

.diagnosis-diagram .dg-timeline-title {
  font-weight: 500;
  color: var(--dg-text);
}

.diagnosis-diagram .dg-timeline-desc {
  font-size: var(--fs-sm);
  color: var(--dg-muted);
}

.diagnosis-diagram .dg-timeline-arrow {
  display: none;
}

@media (min-width: 64rem) {
  .diagnosis-diagram .dg-timeline-numbered,
  .diagnosis-diagram .dg-timeline-friction {
    flex-direction: row;
    align-items: flex-start;
    gap: var(--space-2);
  }

  .diagnosis-diagram .dg-timeline-numbered .dg-timeline-item,
  .diagnosis-diagram .dg-timeline-friction .dg-timeline-item {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
    padding-bottom: 0;
    flex: 1;
    position: relative;
  }

  .diagnosis-diagram .dg-timeline-numbered .dg-timeline-item:not(:last-child)::before,
  .diagnosis-diagram .dg-timeline-friction .dg-timeline-item:not(:last-child)::before {
    content: none;
  }

  .diagnosis-diagram .dg-timeline-numbered .dg-timeline-content,
  .diagnosis-diagram .dg-timeline-friction .dg-timeline-content {
    align-items: center;
    padding-top: var(--space-2);
  }

  .diagnosis-diagram .dg-timeline-arrow {
    display: block;
    position: absolute;
    top: 1.25rem;
    right: 0;
    transform: translate(50%, -50%);
    width: 1.125rem;
    height: 1.125rem;
    color: var(--dg-muted);
    flex-shrink: 0;
  }
}

/* Section 4 — contained panel --------------------------------------- */

.diagnosis-diagram .dg-panel {
  background: var(--dg-card);
  border: 1px solid var(--dg-border);
  border-radius: var(--dg-radius);
  padding: var(--space-6);
}

.diagnosis-diagram .dg-panel-items {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.diagnosis-diagram .dg-panel-item {
  display: flex;
  flex-direction: column;
}

.diagnosis-diagram .dg-panel-chevron {
  display: none;
}

@media (min-width: 48rem) {
  .diagnosis-diagram .dg-panel-items {
    flex-direction: row;
    align-items: flex-start;
  }

  .diagnosis-diagram .dg-panel-item {
    flex: 1;
  }

  .diagnosis-diagram .dg-panel-chevron {
    display: block;
    width: 1.125rem;
    height: 1.125rem;
    color: var(--dg-muted);
    align-self: center;
    margin-top: 1.5rem;
    flex-shrink: 0;
  }
}

/* Section 5 — badge callout ------------------------------------------ */

.diagnosis-diagram .dg-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-3);
  background: var(--dg-card);
  border: 1px solid var(--dg-border);
  border-radius: var(--dg-radius);
  padding: var(--space-8) var(--space-6);
}

.diagnosis-diagram .dg-badge-icon {
  width: 2.5rem;
  height: 2.5rem;
}

.diagnosis-diagram .dg-badge-headline {
  margin: 0;
}

.diagnosis-diagram .dg-badge-supporting {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--dg-muted);
  margin: 0;
}

@media (min-width: 64rem) {
  .diagnosis-diagram .dg-badge-icon {
    width: 3rem;
    height: 3rem;
  }
}

/* Footer — outcomes ---------------------------------------------------- */

.diagnosis-diagram .dg-footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
}

.diagnosis-diagram .dg-footer-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.diagnosis-diagram .dg-footer-title {
  font-weight: 500;
  color: var(--dg-text);
}

.diagnosis-diagram .dg-footer-desc {
  font-size: var(--fs-sm);
  color: var(--dg-muted);
}

@media (min-width: 48rem) {
  .diagnosis-diagram .dg-footer-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}