/* ============================================================
   /workflow — page-specific styles
   Builds on site.css; adds sub-hero, split, stages, principles, faq
   ============================================================ */

.nav__link.is-current {
  background-size: 100% 1px;
  color: var(--hai-coral-deep);
}

/* ===== Sub-hero ======================================================= */
.wf-hero {
  position: relative;
  padding: 120px 0 96px;
  overflow: hidden;
  background: var(--hai-off-white);
}
.wf-hero__arc {
  position: absolute; pointer-events: none;
  width: 720px; height: 720px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, rgba(217,233,232,0.13), transparent 70%);
  right: -200px; top: -240px;
  filter: blur(40px);
}
.wf-hero__inner { position: relative; z-index: 2; max-width: 880px; }
.wf-hero h1 {
  font-size: clamp(40px, 5.6vw, 80px);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.02;
  margin: 18px 0 28px;
}
.wf-hero h1 em {
  font-style: normal;
  color: var(--hai-coral);
}
.wf-hero__lede {
  font-size: 19px;
  line-height: 1.55;
  color: var(--fg-muted);
  max-width: 64ch;
  margin: 0 0 56px;
  text-wrap: pretty;
}
.wf-hero__meta {
  display: flex; gap: 56px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
}
.wf-hero__meta > div {
  display: flex; flex-direction: column; gap: 4px;
}
.wf-hero__meta span {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--fg-muted);
}
.wf-hero__meta strong {
  font-weight: 600;
  font-size: 15px;
  letter-spacing: -0.005em;
}

/* ===== Loop section (reuses .wf-card) ================================= */
.wf-loop {
  padding: 100px 0;
  background: var(--hai-off-white);
}

/* ===== Split: AI does / Human decides ================================= */
.wf-split {
  padding: 120px 0;
  background: var(--hai-graphite);
  color: var(--hai-off-white);
  position: relative;
  overflow: hidden;
}
.wf-split .eyebrow { color: var(--hai-aqua-soft); }
.wf-split .section-head__title h2 { color: var(--hai-off-white); }

.wf-split__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 48px;
}
.wf-split__col {
  position: relative;
  padding: 40px 36px 36px;
  border-radius: 28px;
  background: rgba(247, 243, 238, 0.04);
  border: 1px solid rgba(247, 243, 238, 0.10);
  display: flex; flex-direction: column;
}
.wf-split__col--human {
  background: rgba(255, 122, 92, 0.08);
  border-color: rgba(255, 122, 92, 0.25);
}
.wf-split__head {
  display: flex; align-items: baseline; gap: 16px;
  margin-bottom: 28px;
}
.wf-split__tag {
  display: inline-flex; align-items: center;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background: rgba(217,233,232,0.16);
  color: var(--hai-aqua-soft);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
}
.wf-split__tag--coral {
  background: rgba(230,229,223,0.26);
  color: var(--hai-stone);
}
.wf-split__head h3 {
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--hai-off-white);
  margin: 0;
}
.wf-split__list {
  list-style: none; padding: 0; margin: 0;
  display: flex; flex-direction: column; gap: 18px;
  flex: 1;
}
.wf-split__list li {
  font-size: 15px; line-height: 1.55;
  color: rgba(247, 243, 238, 0.78);
  padding-left: 22px;
  position: relative;
}
.wf-split__list li::before {
  content: ""; position: absolute;
  left: 0; top: 9px;
  width: 8px; height: 1px;
  background: rgba(247, 243, 238, 0.4);
}
.wf-split__col--human .wf-split__list li::before { background: var(--hai-stone); width: 10px; }
.wf-split__list strong {
  color: var(--hai-off-white);
  font-weight: 600;
  display: inline;
}
.wf-split__foot {
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid rgba(247, 243, 238, 0.10);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--hai-aqua-soft);
}
.wf-split__col--human .wf-split__foot { color: var(--hai-stone); border-top-color: rgba(230,229,223,0.22); }

/* ===== Stages list ==================================================== */
.wf-stages {
  padding: 120px 0;
  background: var(--hai-off-white);
}
.wf-stages__list {
  list-style: none; padding: 0; margin: 56px 0 0;
  display: flex; flex-direction: column;
  border-top: 1px solid var(--border);
}
.wf-stage {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 32px;
  padding: 40px 0;
  border-bottom: 1px solid var(--border);
}
.wf-stage__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: var(--ls-wide);
  color: var(--fg-muted);
  padding-top: 6px;
}
.wf-stage--human .wf-stage__num { color: var(--hai-ocean); }
.wf-stage__body h3 {
  font-size: 26px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0 0 12px;
}
.wf-stage__body p {
  font-size: 16px;
  line-height: 1.6;
  color: var(--fg-muted);
  max-width: 64ch;
  margin: 0 0 20px;
  text-wrap: pretty;
}
.wf-stage__chips {
  display: flex; flex-wrap: wrap; gap: 8px;
}
.wf-stage__chips span {
  display: inline-flex; align-items: center;
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  background: rgba(31, 35, 38, 0.05);
  border: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--fg-muted);
}
.wf-stage--human .wf-stage__chips span {
  background: rgba(255, 122, 92, 0.08);
  border-color: rgba(255, 122, 92, 0.25);
  color: var(--hai-coral-deep);
}

/* ===== Principles grid ================================================ */
.wf-principles {
  padding: 120px 0;
  background: var(--hai-graphite);
  color: var(--hai-off-white);
}
.wf-principles .eyebrow { color: var(--hai-aqua-soft); }
.wf-principles .section-head__title h2 { color: var(--hai-off-white); }

.wf-principles__grid {
  list-style: none; padding: 0; margin: 56px 0 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: rgba(247, 243, 238, 0.08);
  border: 1px solid rgba(247, 243, 238, 0.08);
  border-radius: 24px;
  overflow: hidden;
}
.wf-principle {
  background: var(--hai-graphite);
  padding: 36px 32px;
  display: flex; flex-direction: column;
  min-height: 240px;
}
.wf-principle__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: var(--ls-wide);
  color: var(--hai-aqua-soft);
  margin-bottom: 24px;
}
.wf-principle h3 {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.25;
  color: var(--hai-off-white);
  margin: 0 0 12px;
  text-wrap: balance;
}
.wf-principle p {
  font-size: 14px;
  line-height: 1.55;
  color: rgba(247, 243, 238, 0.65);
  margin: 0;
  text-wrap: pretty;
}

/* ===== FAQ ============================================================ */
.wf-faq {
  padding: 120px 0;
  background: var(--hai-off-white);
}
.wf-faq__list {
  list-style: none; padding: 0; margin: 48px 0 0;
  border-top: 1px solid var(--border);
}
.wf-faq__item {
  border-bottom: 1px solid var(--border);
}
.wf-faq__item details {
  padding: 24px 0;
}
.wf-faq__item summary {
  list-style: none;
  cursor: pointer;
  font-size: 19px;
  font-weight: 500;
  letter-spacing: -0.015em;
  display: flex; justify-content: space-between; align-items: center;
  gap: 16px;
  position: relative;
  padding-right: 32px;
}
.wf-faq__item summary::-webkit-details-marker { display: none; }
.wf-faq__item summary::after {
  content: "+";
  position: absolute;
  right: 0;
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 22px;
  color: var(--hai-ocean);
  transition: transform 200ms var(--ease-standard);
}
.wf-faq__item details[open] summary::after { content: "−"; }
.wf-faq__item details p {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.6;
  color: var(--fg-muted);
  max-width: 64ch;
  text-wrap: pretty;
}

/* ===== Responsive ===================================================== */
@media (max-width: 900px) {
  .wf-hero { padding: 80px 0 64px; }
  .wf-hero__meta { gap: 24px; }
  .wf-split { padding: 80px 0; }
  .wf-split__grid { grid-template-columns: 1fr; gap: 16px; }
  .wf-split__col { padding: 28px 24px; }
  .wf-stages { padding: 80px 0; }
  .wf-stage { grid-template-columns: 1fr; gap: 12px; padding: 28px 0; }
  .wf-principles { padding: 80px 0; }
  .wf-principles__grid { grid-template-columns: 1fr; }
  .wf-principle { min-height: 0; padding: 28px 24px; }
  .wf-faq { padding: 80px 0; }
}