/* ==========================================================================
   Layout — page sections. Marketing-site specific; Stage 2 can ignore.
   ========================================================================== */

.section { padding-block: var(--section-gap); }
.section--tight { padding-block: var(--space-12); }
.section--muted { background: var(--color-bg-muted); }
.section--inverse {
  position: relative;
  overflow: hidden;
  background: var(--color-bg-elevated);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.section--inverse::before {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -70%;
  transform: translateX(-50%);
  width: 70vw;
  max-width: 900px;
  aspect-ratio: 2;
  border-radius: 50%;
  background: radial-gradient(closest-side, var(--color-dark-glow), transparent 72%);
  pointer-events: none;
}
.section--inverse > .container { position: relative; }

.grid { display: grid; gap: var(--space-5); }
.grid--2 { grid-template-columns: 1fr; }
.grid--3 { grid-template-columns: 1fr; }
@media (min-width: 640px) { .grid--3 { grid-template-columns: repeat(3, 1fr); } .grid--2 { grid-template-columns: repeat(2, 1fr); } }

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* --- Hero -------------------------------------------------------------- */
.hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(var(--space-12), 7vw, var(--space-20)) var(--section-gap);
}
/* Backlight: soft blue glow, top-right, plus a faint grid that fades out. */
.hero::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -12%;
  width: 64vw;
  max-width: 900px;
  aspect-ratio: 1.15;
  border-radius: 50%;
  background: radial-gradient(closest-side, var(--color-dark-glow), rgba(91, 140, 255, 0.06) 55%, transparent 75%);
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(27, 29, 34, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(27, 29, 34, 0.045) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent 85%);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent 85%);
  pointer-events: none;
}
.theme-dark .hero::after {
  background-image:
    linear-gradient(rgba(242, 240, 234, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(242, 240, 234, 0.035) 1px, transparent 1px);
}
.hero > .container { position: relative; z-index: 1; }
.hero__grid {
  display: grid;
  gap: var(--space-12);
  align-items: center;
}
.hero__grid > * { min-width: 0; }
@media (min-width: 900px) {
  .hero__grid { grid-template-columns: 1fr 1fr; gap: var(--space-12); }
}
.hero h1 {
  max-width: 20ch;
  overflow-wrap: break-word;
}
.hero .lede { margin-bottom: var(--space-8); }
.hero .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-accent-ink);
}
.hero__pulse {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 12px var(--color-accent);
  animation: pulse 2s ease-in-out infinite;
}

.hero__visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-5);
  width: 100%;
  min-width: 0;
}
.hero__visual svg { width: 100%; max-width: 540px; height: auto; }
.hero__chips {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2);
  width: 100%;
  max-width: 520px;
}
.hero__chips .chip { max-width: 100%; }
.hero__caption {
  font-size: var(--text-sm);
  color: var(--color-ink-subtle);
  text-align: center;
  max-width: 44ch;
}

/* Node graph: source → candidates → verified → delivered */
.graph__edge      { stroke: rgba(27, 29, 34, 0.16); stroke-width: 1.5; }
.graph__edge--on  { stroke: rgba(30, 79, 214, 0.38); }
.graph__node      { fill: var(--color-bg-elevated); stroke: rgba(27, 29, 34, 0.24); stroke-width: 1.5; }
.graph__node--on  { stroke: var(--color-accent); }
.graph__node--off { fill: none; stroke: rgba(27, 29, 34, 0.28); stroke-dasharray: 4 4; }
.graph__check     { stroke: var(--color-accent-ink); stroke-width: 2.5; stroke-linecap: round; stroke-linejoin: round; fill: none; }
.graph__dot       { fill: rgba(27, 29, 34, 0.24); }
.graph__final     { fill: var(--color-accent); }
.graph__flow      { stroke: var(--color-accent); stroke-width: 2; stroke-linecap: round; fill: none; stroke-dasharray: 6 8; animation: travel 3.2s linear infinite; }
.theme-dark .graph__edge      { stroke: rgba(242, 240, 234, 0.14); }
.theme-dark .graph__edge--on  { stroke: rgba(91, 140, 255, 0.35); }
.theme-dark .graph__node      { fill: var(--color-dark-surface); stroke: rgba(242, 240, 234, 0.25); }
.theme-dark .graph__node--off { fill: none; stroke: rgba(242, 240, 234, 0.3); }
.theme-dark .graph__dot       { fill: rgba(242, 240, 234, 0.25); }
.theme-dark .graph__flow      { stroke: #8fb0ff; }
.graph__flow--2   { animation-delay: 0.8s; }
.graph__stage-1   { animation: pulse 4s ease-in-out infinite; }
.graph__stage-2   { animation: pulse 4s ease-in-out 0.6s infinite; }
.graph__stage-3   { animation: pulse 4s ease-in-out 1.2s infinite; }

@keyframes pulse  { 0%, 100% { opacity: 0.35; } 50% { opacity: 1; } }
@keyframes travel { 0% { stroke-dashoffset: 120; opacity: 0; } 15% { opacity: 1; } 85% { opacity: 1; } 100% { stroke-dashoffset: 0; opacity: 0; } }

@media (prefers-reduced-motion: reduce) {
  .hero__pulse, .graph__flow, .graph__stage-1, .graph__stage-2, .graph__stage-3 { animation: none; opacity: 1; }
  .graph__flow { display: none; }
}

/* Page hero (subpages): same backlight, shorter */
.page-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(var(--space-12), 6vw, var(--space-20)) var(--space-12);
  border-bottom: 1px solid var(--color-border);
}
.page-hero::before {
  content: "";
  position: absolute;
  top: -70%;
  right: -10%;
  width: 50vw;
  max-width: 700px;
  aspect-ratio: 1.2;
  border-radius: 50%;
  background: radial-gradient(closest-side, var(--color-dark-glow), transparent 72%);
  pointer-events: none;
}
.page-hero > .container { position: relative; }

/* --- Problem ----------------------------------------------------------- */
.problem__grid {
  display: grid;
  gap: var(--space-8);
  align-items: start;
}
@media (min-width: 900px) { .problem__grid { grid-template-columns: 1fr 1fr; gap: var(--space-16); } }
.problem__detail {
  width: 100%;
  max-width: 34rem;
  align-self: center;
  justify-self: center;
}
.problem__detail-title {
  margin-bottom: var(--space-4);
  font-size: var(--text-base);
  color: var(--color-ink);
}

.problem__audit-list { border-top: 1px solid var(--color-border-strong); }
.problem__audit-row {
  padding: var(--space-4) 0 var(--space-4) var(--space-4);
  border-bottom: 1px solid var(--color-border);
  border-left: 2px solid var(--color-accent);
}
.problem__audit-row strong {
  display: block;
  margin-bottom: var(--space-1);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  color: var(--color-ink);
}
.problem__audit-row p {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.5;
  color: var(--color-ink-muted);
}

.problem__flow-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.problem__flow-step {
  position: relative;
  display: grid;
  grid-template-columns: 2rem 1fr;
  gap: var(--space-3);
  padding-bottom: var(--space-4);
}
.problem__flow-step:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 2rem;
  bottom: 0;
  left: calc(1rem - 0.5px);
  width: 1px;
  background: var(--color-border-strong);
}
.problem__flow-index {
  position: relative;
  z-index: 1;
  width: 2rem;
  height: 2rem;
  display: grid;
  place-items: center;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-pill);
  background: var(--color-bg-muted);
  color: var(--color-ink-subtle);
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  font-weight: 700;
}
.problem__flow-step:last-child .problem__flow-index {
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
  color: var(--color-accent-ink);
}
.problem__flow-step strong {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  color: var(--color-ink);
}
.problem__flow-step p {
  margin: var(--space-1) 0 0;
  font-size: var(--text-sm);
  line-height: 1.45;
  color: var(--color-ink-muted);
}
.problem__flow-foot {
  margin: var(--space-1) 0 0 calc(2rem + var(--space-3));
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-ink);
}

/* --- Contrast (quality over quantity) --------------------------------- */
.contrast {
  display: grid;
  gap: var(--space-5);
}
@media (min-width: 768px) { .contrast { grid-template-columns: 1fr 1fr; } }
.contrast__col { padding: var(--space-8); }
.contrast__col--them { background: var(--color-bg-muted); border-color: transparent; }
.theme-dark .contrast__col--them { border-color: var(--color-border); }
.contrast__col--us { border-color: var(--color-accent); border-width: 1.5px; }
.contrast__list {
  list-style: none;
  padding: 0;
  margin: var(--space-6) 0 0;
  display: grid;
  gap: var(--space-4);
}
.contrast__list li {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  line-height: var(--leading-snug);
}
.contrast__list svg { width: 1.25rem; height: 1.25rem; flex: none; margin-top: 0.1em; }
.contrast__col--them .contrast__list { color: var(--color-ink-muted); }
.contrast__col--them .contrast__list svg { color: var(--color-ink-subtle); }
.contrast__col--us .contrast__list svg { color: var(--color-accent); }

.abstain {
  margin-top: var(--space-8);
  display: grid;
  gap: var(--space-6);
  align-items: center;
  padding: var(--space-8);
}
@media (min-width: 768px) { .abstain { grid-template-columns: auto 1fr; gap: var(--space-10); } }
.abstain__mark {
  width: 4rem;
  height: 4rem;
  border-radius: var(--radius-pill);
  border: 2px dashed var(--color-border-strong);
  display: grid;
  place-items: center;
  color: var(--color-ink-subtle);
}
.abstain__mark svg { width: 1.75rem; height: 1.75rem; }
.abstain h3 { margin-bottom: var(--space-2); }
.abstain p { color: var(--color-ink-muted); max-width: 60ch; }

/* --- CTA band ---------------------------------------------------------- */
.cta-band { text-align: center; }
.cta-band .section-header { margin-bottom: var(--space-8); }
.cta-band .actions { justify-content: center; }

/* --- How it works page -------------------------------------------------- */
.how-step {
  display: grid;
  gap: var(--space-6);
  padding-block: var(--space-12);
  border-bottom: 1px solid var(--color-border);
}
.how-step:last-of-type { border-bottom: 0; }
@media (min-width: 768px) {
  .how-step { grid-template-columns: 8rem 1fr; gap: var(--space-10); }
}
.how-step__marker { display: flex; align-items: center; align-self: start; gap: var(--space-3); }
.how-step__marker .step__index { margin-bottom: 0; }
.how-step__label {
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-ink-subtle);
}
.how-step h2 { font-size: var(--text-2xl); }
.how-step p { color: var(--color-ink-muted); }

.evidence-example {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-8);
}
.evidence-example__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}
.evidence-example__row--withheld { border-style: dashed; background: transparent; color: var(--color-ink-subtle); }
.evidence-example__text { flex: 1 1 18rem; font-size: var(--text-sm); }

.evidence-section__grid {
  display: grid;
  gap: var(--space-10);
  align-items: center;
}
.evidence-section__copy .section-header { margin-bottom: var(--space-8); }
.evidence-section__copy > p { color: var(--color-ink-muted); }
.evidence-section__copy > p:last-child { margin-bottom: 0; }
.evidence-section__example {
  width: 100%;
  max-width: 34rem;
  justify-self: center;
}
@media (min-width: 768px) {
  .evidence-section__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
  }
  .evidence-section__example {
    justify-self: center;
  }
}

.check-list {
  list-style: none;
  padding: 0;
  margin: var(--space-6) 0 0;
  display: grid;
  gap: var(--space-3);
}
.check-list li { display: flex; gap: var(--space-3); align-items: flex-start; }
.check-list svg { width: 1.25rem; height: 1.25rem; color: var(--color-accent); flex: none; margin-top: 0.15em; }

.tailored-section__card {
  width: 100%;
  max-width: 34rem;
  align-self: center;
  justify-self: center;
}
@media (min-width: 768px) {
  .tailored-section__grid {
    align-items: center;
    gap: var(--space-16);
  }
}

/* --- Contact page ------------------------------------------------------ */
.contact__grid {
  display: grid;
  gap: var(--space-10);
  align-items: start;
}
@media (min-width: 900px) { .contact__grid { grid-template-columns: 1.4fr 1fr; gap: var(--space-16); } }
.contact__form { padding: var(--space-8); }
.contact__aside { display: grid; gap: var(--space-5); }
.contact__aside .card p { max-width: none; }
.contact__aside a { word-break: break-all; }

/* --- 404 --------------------------------------------------------------- */
.not-found { text-align: center; padding-block: var(--space-24); }
.not-found .section-header { margin-inline: auto; }

/* --- Components demo page ---------------------------------------------- */
.demo-block { margin-bottom: var(--space-12); }
.demo-block > h2 { font-size: var(--text-xl); margin-bottom: var(--space-4); }
.demo-row { display: flex; flex-wrap: wrap; gap: var(--space-3); align-items: center; }

/* Closing block: "Built for your business" + CTA */
.closing__line { color: var(--color-ink); font-weight: 500; margin-top: var(--space-6); }
.closing__actions { margin-top: var(--space-6); }