/* ═══════════════════════════════════════════════════════════════════════════
   How Salmon Verifies — Page Styles
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── Hero ── */
.hwv-hero {
  padding: 8rem 0 5rem;
  text-align: center;
}
.hwv-hero h1 {
  font-size: clamp(2.5rem, 5vw, 4.25rem);
  font-weight: 300;
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin-bottom: 1.75rem;
  max-width: 48rem;
  margin-left: auto;
  margin-right: auto;
}
.hwv-hero h1 em { font-style: normal; color: var(--salmon); }
.hwv-hero .hero-sub {
  font-size: 1.125rem;
  font-weight: 300;
  color: var(--grey);
  max-width: 42rem;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.65;
}

/* ── Section headings ── */
.section-title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 300;
  line-height: 1.12;
  letter-spacing: -0.015em;
  margin-bottom: 1rem;
  max-width: 32rem;
}
.section-sub {
  font-size: 1.0625rem;
  font-weight: 300;
  color: var(--grey);
  max-width: 36rem;
  line-height: 1.65;
  margin-bottom: 3.5rem;
}

/* ══════════════════════════════════════════════════════════════════════════
   THREE FAILURE LANES — Diagram
   ══════════════════════════════════════════════════════════════════════════ */

.fail-lanes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.fail-lane {
  background: var(--darker);
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  padding: 2rem 1.75rem 1.75rem;
  display: flex;
  flex-direction: column;
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.fail-lane.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.fail-lane:nth-child(2).is-visible { transition-delay: 0.1s; }
.fail-lane:nth-child(3).is-visible { transition-delay: 0.2s; }

.fail-lane-header {
  margin-bottom: 1.75rem;
}
.fail-icon {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 0.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--grey);
  margin-bottom: 1rem;
}
.fail-lane-header h3 {
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--white);
  margin-bottom: 0.375rem;
}
.fail-tag {
  font-size: 0.75rem;
  color: var(--charcoal);
  font-weight: 400;
}

/* Flow diagram inside each lane */
.fail-diagram {
  flex: 1;
  margin-bottom: 1.5rem;
}
.fail-flow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  margin-bottom: 1.25rem;
}
.fail-arrow {
  color: var(--charcoal);
  font-size: 1rem;
  line-height: 1;
  padding: 0.375rem 0;
}
.fail-node {
  width: 100%;
  text-align: center;
  padding: 0.75rem 1rem;
  border-radius: var(--r-sm);
  font-size: 0.8125rem;
  line-height: 1.4;
}
.fail-node-input {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--grey);
  font-family: var(--f-mono);
  font-size: 0.75rem;
}
.fail-node-check {
  background: transparent;
  border: 1px dashed var(--border-2);
  color: var(--charcoal);
  position: relative;
}
.fail-check-label {
  display: block;
  font-size: 0.625rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--charcoal);
  margin-bottom: 0.25rem;
  font-weight: 500;
}
.fail-node-result {
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}
.fail-result-svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}
.fail-node-false-pos {
  background: var(--green-dim);
  border: 1px solid rgba(90,180,110,0.2);
  color: var(--green);
}
.fail-node-stale {
  background: var(--salmon-dim);
  border: 1px solid var(--salmon-bdr);
  color: var(--salmon);
}
.fail-node-halluc {
  background: var(--salmon-dim);
  border: 1px solid var(--salmon-bdr);
  color: var(--salmon);
}

/* Gap line */
.fail-gap {
  position: relative;
  margin: 1.25rem 0 1rem;
}
.fail-gap-line {
  height: 1px;
  background: repeating-linear-gradient(
    90deg,
    var(--border-2) 0,
    var(--border-2) 4px,
    transparent 4px,
    transparent 8px
  );
}
.fail-gap-label {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--darker);
  padding: 0 0.75rem;
  font-size: 0.625rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--charcoal);
  font-weight: 500;
  white-space: nowrap;
}

/* Missed items */
.fail-missed {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}
.fail-missed-item {
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
  font-size: 0.8125rem;
  color: var(--charcoal);
  line-height: 1.45;
}
.x-sm {
  width: 0.875rem;
  height: 0.875rem;
  border-radius: 50%;
  background: var(--red-dim);
  border: 1px solid rgba(217,80,64,0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 0.125rem;
  font-size: 0.5rem;
  font-weight: 700;
  color: var(--red);
}

.fail-verdict {
  font-size: 0.875rem;
  color: var(--charcoal);
  border-top: 1px solid var(--border);
  padding-top: 1.25rem;
  margin-top: auto;
  line-height: 1.5;
}
.fail-verdict strong {
  color: var(--white);
  font-weight: 500;
}


/* ══════════════════════════════════════════════════════════════════════════
   SALMON VERIFICATION FLOW — Vertical Diagram
   ══════════════════════════════════════════════════════════════════════════ */

.vflow {
  max-width: 44rem;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.vflow-connector {
  padding: 0.5rem 0;
}

.vflow-stage {
  width: 100%;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.vflow-stage.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.vflow-stage-label {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--salmon);
  margin-bottom: 1rem;
  text-align: center;
}

/* Input card */
.vflow-input-cards {
  display: flex;
  justify-content: center;
}
.vflow-input-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  padding: 1.5rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  min-width: 20rem;
}
.vflow-input-field {
  display: flex;
  gap: 1rem;
  align-items: baseline;
  font-size: 0.875rem;
}
.vflow-key {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--charcoal);
  font-weight: 500;
  min-width: 5rem;
}
.vflow-val {
  color: var(--white);
  font-weight: 400;
}
.vflow-val-dim {
  color: var(--charcoal);
}

/* Signal evaluation */
.vflow-eval-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  padding: 1.75rem 2rem;
}
.vflow-eval-question {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--white);
  margin-bottom: 1.25rem;
}
.vflow-eval-signals {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}
.vflow-signal {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-size: 0.8125rem;
  color: var(--grey);
}
.vflow-signal-dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  flex-shrink: 0;
}
.vflow-signal-dot.good { background: var(--green); }
.vflow-signal-dot.warn { background: #ffb432; }

/* Route selection */
.vflow-route-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.vflow-route-path {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  padding: 1.5rem 1.75rem;
  position: relative;
}
.vflow-route-active {
  border-color: var(--salmon-bdr);
  background: var(--salmon-dim);
}
.vflow-route-tag {
  font-size: 0.5625rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--salmon);
  margin-bottom: 0.625rem;
}
.vflow-route-tag.alt {
  color: var(--charcoal);
}
.vflow-route-path h4 {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--white);
  margin-bottom: 0.5rem;
}
.vflow-route-path p {
  font-size: 0.8125rem;
  color: var(--grey);
  line-height: 1.5;
  font-weight: 300;
}
.vflow-route-alt h4 { color: var(--charcoal); }
.vflow-route-alt p { color: var(--charcoal); }

/* Source grid */
.vflow-source-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin-bottom: 1rem;
}
.vflow-source {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  padding: 1rem 1.25rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: var(--grey);
  text-align: center;
}
.vflow-source-icon {
  width: 24px;
  height: 24px;
  color: var(--grey);
}
.vflow-source-icon svg {
  width: 100%;
  height: 100%;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.vflow-source-status {
  font-size: 0.5625rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.1875rem 0.5rem;
  border-radius: 1rem;
}
.vflow-source-status.live {
  color: var(--green);
  background: var(--green-dim);
  border: 1px solid rgba(90,180,110,0.2);
}
.vflow-source-note {
  font-size: 0.8125rem;
  color: var(--charcoal);
  text-align: center;
  font-style: italic;
  font-weight: 300;
}

/* Cross-reference box */
.vflow-xref-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  overflow: hidden;
}
.vflow-xref-row {
  display: grid;
  grid-template-columns: 6rem 1fr auto;
  gap: 1rem;
  padding: 0.875rem 1.75rem;
  border-bottom: 1px solid var(--border);
  align-items: center;
  font-size: 0.875rem;
}
.vflow-xref-row:last-child { border-bottom: none; }
.vflow-xref-field {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--charcoal);
  font-weight: 500;
}
.vflow-xref-finding {
  color: var(--white);
}
.vflow-xref-change {
  color: var(--salmon-light);
}
.vflow-xref-new {
  color: var(--white);
  font-family: var(--f-mono);
  font-size: 0.8125rem;
}
.vflow-xref-sources {
  font-size: 0.6875rem;
  color: var(--green);
  font-weight: 500;
  white-space: nowrap;
}

/* Output card */
.vflow-output-card {
  background: var(--salmon-dim);
  border: 2px solid var(--salmon-bdr);
  border-radius: var(--r-card);
  overflow: hidden;
}
.vflow-output-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 2rem;
  border-bottom: 1px solid var(--salmon-bdr);
}
.vflow-output-name {
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--white);
}
.vflow-output-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--salmon);
}
.vflow-conf-dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--salmon);
  animation: confPulse 2s ease-in-out infinite;
}
@keyframes confPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.vflow-output-fields {
  padding: 0.5rem 0;
}
.vflow-output-field {
  display: grid;
  grid-template-columns: 5rem 1fr auto;
  gap: 1rem;
  padding: 0.625rem 2rem;
  align-items: baseline;
  font-size: 0.875rem;
}
.vflow-val-verified {
  color: var(--white);
  font-weight: 500;
}
.vflow-val-change {
  color: var(--salmon);
  font-weight: 500;
}
.vflow-conf {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--salmon);
  opacity: 0.8;
}

.vflow-output-footer {
  padding: 1rem 2rem;
  border-top: 1px solid var(--salmon-bdr);
  font-size: 0.75rem;
  color: var(--charcoal);
  font-weight: 300;
}


/* ══════════════════════════════════════════════════════════════════════════
   SCALE STATS BAR
   ══════════════════════════════════════════════════════════════════════════ */

.hwv-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  overflow: hidden;
}
.hwv-stat {
  background: var(--darker);
  padding: 2.25rem 1.75rem;
  text-align: center;
}
.hwv-stat-val {
  font-size: clamp(2rem, 3vw, 2.75rem);
  font-weight: 600;
  color: var(--salmon);
  line-height: 1;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}
.hwv-stat-label {
  font-size: 0.8125rem;
  color: var(--charcoal);
  line-height: 1.45;
  font-weight: 300;
}


/* ══════════════════════════════════════════════════════════════════════════
   FOUR DIFFERENTIATORS
   ══════════════════════════════════════════════════════════════════════════ */

.diff-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-top: 3rem;
}
.diff-card {
  background: var(--darker);
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  padding: 2.25rem 2rem;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}
.diff-card.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.diff-card:nth-child(2).is-visible { transition-delay: 0.08s; }
.diff-card:nth-child(3).is-visible { transition-delay: 0.16s; }
.diff-card:nth-child(4).is-visible { transition-delay: 0.24s; }

.diff-num {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--salmon);
  margin-bottom: 1rem;
  font-family: var(--f-mono);
}
.diff-card h3 {
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--white);
  margin-bottom: 0.75rem;
  line-height: 1.3;
}
.diff-card p {
  font-size: 0.875rem;
  color: var(--grey);
  font-weight: 300;
  line-height: 1.65;
}

.diff-cta {
  margin-top: 3rem;
  text-align: center;
}
.diff-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--salmon);
  text-decoration: none;
  transition: color 0.15s;
}
.diff-link:hover {
  color: var(--salmon-light);
}


/* ══════════════════════════════════════════════════════════════════════════
   ADAPTIVE ROUTING CALLOUT
   ══════════════════════════════════════════════════════════════════════════ */

.adaptive-callout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 4rem;
  align-items: center;
}
.adaptive-left h2 {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 300;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin-bottom: 1.25rem;
}
.adaptive-left p {
  color: var(--grey);
  font-weight: 300;
  line-height: 1.65;
  font-size: 0.9375rem;
}

.adaptive-example {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.adaptive-ex-row {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 1rem;
  align-items: center;
  opacity: 0;
  transform: translateX(16px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}
.adaptive-ex-row.is-visible {
  opacity: 1;
  transform: translateX(0);
}
.adaptive-ex-row:nth-child(2).is-visible { transition-delay: 0.12s; }
.adaptive-ex-row:nth-child(3).is-visible { transition-delay: 0.24s; }

.adaptive-ex-input,
.adaptive-ex-output {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  padding: 0.875rem 1.125rem;
  font-size: 0.8125rem;
  color: var(--grey);
  line-height: 1.4;
}
.adaptive-ex-output {
  border-color: var(--salmon-bdr);
  background: var(--salmon-dim);
  color: var(--white);
}
.adaptive-ex-tag {
  font-size: 0.5625rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--charcoal);
  margin-bottom: 0.375rem;
}
.adaptive-ex-tag.s { color: var(--salmon); }
.adaptive-ex-arrow {
  color: var(--salmon);
  font-size: 1rem;
  flex-shrink: 0;
}

/* ══════════════════════════════════════════════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════════════════════════════════════════════ */

@media (max-width: 991px) {
  .hwv-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  .fail-lanes {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }
  .vflow-eval-signals {
    grid-template-columns: 1fr;
  }
  .vflow-route-split {
    grid-template-columns: 1fr;
  }
  .vflow-source-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .diff-grid {
    grid-template-columns: 1fr;
  }
  .adaptive-callout {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}

@media (max-width: 767px) {
  .hwv-stats {
    grid-template-columns: 1fr 1fr;
  }
  .hwv-stat { padding: 1.5rem 1.25rem; }
  .hwv-hero { padding: 6rem 0 3.5rem; }
  .hwv-hero h1 { font-size: 2rem; }

  .fail-lane { padding: 1.5rem 1.25rem; }

  .vflow-input-card { min-width: auto; width: 100%; }
  .vflow-xref-row {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }
  .vflow-xref-sources {
    font-size: 0.625rem;
  }
  .vflow-output-field {
    grid-template-columns: 4rem 1fr auto;
    padding: 0.625rem 1.25rem;
  }
  .vflow-output-header { padding: 1rem 1.25rem; }

  .vflow-source-grid {
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
  }
  .vflow-source { padding: 0.75rem; font-size: 0.75rem; }

  .adaptive-ex-row {
    grid-template-columns: 1fr;
    gap: 0.375rem;
  }
  .adaptive-ex-arrow {
    transform: rotate(90deg);
    text-align: center;
  }
}