/* Direction B — Network / Cinematic */

.dirB {
  --bg-0: var(--b-bg-0);
  --bg-1: var(--b-bg-1);
  --bg-2: var(--b-bg-2);
  --line: var(--b-line);
  --line-strong: var(--b-line-strong);
  --fg-0: var(--b-fg-0);
  --fg-1: var(--b-fg-1);
  --fg-2: var(--b-fg-2);
  --fg-3: var(--b-fg-3);
  --accent: var(--b-accent);
  --accent-dim: var(--b-accent-dim);

  background: var(--bg-0);
  color: var(--fg-0);
  font-family: var(--font-sans);
  position: relative;
}

.dirB[data-density="compact"] { --pad-section: 110px; }
.dirB[data-density="comfortable"] { --pad-section: 180px; }

.dirB .scroll-region {
  scroll-behavior: smooth;
}
html { scroll-behavior: smooth; }
html, body {
  background: #08090c;
  color: #e8ecf2;
}

/* glow backdrop */
.dirB::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 60% 40% at 70% 0%, color-mix(in oklch, var(--accent) 8%, transparent) 0%, transparent 60%),
    radial-gradient(ellipse 50% 30% at 0% 100%, rgba(255,255,255,0.03) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

.dirB .scroll-region { position: relative; z-index: 1; }

/* ───── nav ───── */
.dirB .nav {
  position: sticky; top: 0; z-index: 50;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  padding: 18px 40px;
  background: color-mix(in oklch, var(--bg-0) 80%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  gap: 48px;
}
.dirB .nav-brand {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--font-mono); font-size: 11px;
  text-transform: uppercase; letter-spacing: 0.2em;
  color: var(--fg-0);
}
.dirB .nav-brand-mark {
  width: 18px; height: 18px;
  position: relative;
}
.dirB .nav-links {
  display: flex; gap: 32px; justify-content: center;
}
.dirB .nav-links a {
  font-family: var(--font-sans); font-size: 13px;
  color: var(--fg-1); text-decoration: none;
  padding: 8px 0; position: relative;
  transition: color .15s;
}
.dirB .nav-links a:hover, .dirB .nav-links a.active { color: var(--fg-0); }
.dirB .nav-links a.active::after {
  content: ""; position: absolute; bottom: 0; left: 0; right: 0;
  height: 1px; background: var(--accent);
}
.dirB .nav-cta {
  font-family: var(--font-mono); font-size: 11px;
  text-transform: uppercase; letter-spacing: 0.16em;
  color: var(--bg-0); background: var(--fg-0); text-decoration: none;
  padding: 11px 18px;
  display: inline-flex; align-items: center; gap: 10px;
  transition: background .15s;
}
.dirB .nav-cta:hover { background: var(--accent); }

/* ───── hero ───── */
.dirB .hero {
  position: relative;
  padding: 80px 40px 140px;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  min-height: 90vh;
}
.dirB .hero-frame {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 2;
}
.dirB .hero-meta {
  position: absolute; top: 30px; left: 40px; right: 40px;
  display: flex; justify-content: space-between;
  font-family: var(--font-mono); font-size: 10px;
  text-transform: uppercase; letter-spacing: 0.18em;
  color: var(--fg-2);
}
.dirB .hero-eyebrow {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--font-mono); font-size: 11px;
  text-transform: uppercase; letter-spacing: 0.2em;
  color: var(--fg-1);
  margin-bottom: 36px;
}
.dirB .hero-eyebrow .dot {
  width: 6px; height: 6px; border-radius: 50%; background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
  animation: pulseB 2.4s ease-in-out infinite;
}
@keyframes pulseB {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}
.dirB .hero-title {
  font-family: var(--font-sans);
  font-weight: 200;
  font-size: clamp(56px, 7vw, 108px);
  line-height: 0.94;
  letter-spacing: -0.035em;
  margin: 0 0 32px;
  color: var(--fg-0);
}
.dirB .hero-title em { font-style: italic; font-weight: 300; color: var(--fg-1); }
.dirB .hero-title .accent { color: var(--accent); font-style: normal; }

.dirB .hero-lede {
  font-size: 17px; line-height: 1.55; color: var(--fg-1);
  max-width: 44ch;
  margin: 0 0 40px;
}
.dirB .hero-actions { display: flex; gap: 14px; align-items: center; }
.dirB .btn {
  font-family: var(--font-mono); font-size: 11px;
  text-transform: uppercase; letter-spacing: 0.16em;
  text-decoration: none; padding: 14px 22px;
  display: inline-flex; align-items: center; gap: 10px;
  transition: all .15s;
  cursor: pointer; border: 0;
}
.dirB .btn-primary { color: var(--bg-0); background: var(--fg-0); }
.dirB .btn-primary:hover { background: var(--accent); }
.dirB .btn-ghost { color: var(--fg-0); border: 1px solid var(--line-strong); background: transparent; }
.dirB .btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* network graph hero visual */
.dirB .hero-graph {
  aspect-ratio: 1;
  width: 100%;
  position: relative;
}

/* ───── section ───── */
.dirB .section {
  position: relative;
  padding: var(--pad-section, 160px) 40px;
  border-bottom: 1px solid var(--line);
}
.dirB .section-head {
  display: flex; align-items: baseline; gap: 60px;
  margin-bottom: 80px;
}
.dirB .section-id {
  font-family: var(--font-mono); font-size: 10px;
  text-transform: uppercase; letter-spacing: 0.2em;
  color: var(--accent);
  flex-shrink: 0;
  width: 100px;
}
.dirB .section-eyebrow {
  font-family: var(--font-mono); font-size: 10px;
  text-transform: uppercase; letter-spacing: 0.2em;
  color: var(--fg-2);
  margin-bottom: 16px;
}
.dirB .section-title {
  font-weight: 200; font-size: clamp(40px, 5vw, 72px);
  line-height: 1.0; letter-spacing: -0.03em;
  color: var(--fg-0);
  margin: 0; max-width: 18ch;
}
.dirB .section-title em { font-style: italic; color: var(--fg-1); font-weight: 300; }
.dirB .section-title-block { flex: 1; }
.dirB .section-lede {
  font-size: 16px; line-height: 1.6; color: var(--fg-1);
  max-width: 52ch; margin-top: 24px;
}

/* services as expanding rows */
.dirB .services-rows { border-top: 1px solid var(--line); }
.dirB .service-row {
  display: grid; grid-template-columns: 60px 1fr 2fr 60px;
  gap: 40px;
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
  align-items: center;
  cursor: pointer;
  transition: background .2s;
  position: relative;
}
.dirB .service-row::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0;
  width: 0; background: var(--accent); transition: width .25s;
}
.dirB .service-row:hover { background: var(--bg-1); padding-left: 16px; padding-right: 16px; }
.dirB .service-row:hover::before { width: 2px; }
.dirB .service-row:hover .service-row-arrow { color: var(--accent); transform: translateX(6px); }
.dirB .service-row-num {
  font-family: var(--font-mono); font-size: 11px;
  color: var(--fg-2); letter-spacing: 0.14em;
}
.dirB .service-row-name {
  font-size: 28px; font-weight: 300; letter-spacing: -0.02em;
  color: var(--fg-0);
}
.dirB .service-row-desc { color: var(--fg-1); font-size: 14px; line-height: 1.55; }
.dirB .service-row-arrow {
  font-family: var(--font-mono); font-size: 18px;
  color: var(--fg-3); text-align: right;
  transition: color .25s, transform .25s;
}

/* reliability principles — vertical timeline-ish */
.dirB .principles {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.dirB .principle {
  background: var(--bg-0); padding: 36px 32px 40px;
  display: flex; flex-direction: column; gap: 20px;
  min-height: 320px;
  position: relative;
}
.dirB .principle-num {
  font-family: var(--font-mono); font-size: 10px;
  letter-spacing: 0.18em; color: var(--accent);
}
.dirB .principle-name {
  font-size: 22px; font-weight: 300; letter-spacing: -0.01em;
  color: var(--fg-0);
}
.dirB .principle-desc { font-size: 14px; line-height: 1.6; color: var(--fg-1); flex: 1; }
.dirB .principle-vis {
  height: 80px;
  border-top: 1px solid var(--line);
  padding-top: 16px;
  display: flex; align-items: center;
}

/* products */
.dirB .product-cards {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.dirB .product-card {
  background: var(--bg-1);
  border: 1px solid var(--line);
  padding: 28px;
  display: flex; flex-direction: column; gap: 24px;
  transition: border-color .2s;
}
.dirB .product-card:hover { border-color: var(--line-strong); }
.dirB .product-card-vis {
  aspect-ratio: 16/10;
  background: var(--bg-0);
  border: 1px solid var(--line);
  position: relative; overflow: hidden;
}
.dirB .product-card-status {
  display: flex; justify-content: space-between;
  font-family: var(--font-mono); font-size: 10px;
  text-transform: uppercase; letter-spacing: 0.16em;
  color: var(--fg-2);
}
.dirB .product-card-status .live { color: var(--accent); }
.dirB .product-card-name { font-size: 24px; font-weight: 300; letter-spacing: -0.01em; }
.dirB .product-card-desc { font-size: 14px; color: var(--fg-1); line-height: 1.6; }

/* metrics row */
.dirB .metrics {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.dirB .metric {
  background: var(--bg-0); padding: 36px 28px;
}
.dirB .metric-label {
  font-family: var(--font-mono); font-size: 10px;
  text-transform: uppercase; letter-spacing: 0.18em;
  color: var(--fg-2); margin-bottom: 14px;
}
.dirB .metric-value {
  font-weight: 200; font-size: 56px; letter-spacing: -0.04em;
  color: var(--fg-0);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}
.dirB .metric-value .unit {
  font-size: 18px; color: var(--fg-2); margin-left: 6px;
  font-family: var(--font-mono); letter-spacing: 0.05em;
}
.dirB .metric-bar {
  height: 2px; background: var(--bg-2); margin-top: 18px; position: relative; overflow: hidden;
}
.dirB .metric-bar i {
  position: absolute; left: 0; top: 0; bottom: 0;
  background: var(--accent);
  transition: width 1.4s ease;
}

/* about / footer */
.dirB .footer {
  padding: 100px 40px 36px;
  background: var(--bg-1);
  border-top: 1px solid var(--line);
}
.dirB .footer-top {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 60px;
  padding-bottom: 60px;
  border-bottom: 1px solid var(--line);
}
.dirB .footer-mark {
  font-family: var(--font-sans); font-weight: 200;
  font-size: 64px; letter-spacing: -0.04em;
  margin: 0 0 16px; line-height: 1;
}
.dirB .footer-tagline { color: var(--fg-1); font-size: 15px; max-width: 36ch; line-height: 1.55; }
.dirB .footer-col h4 {
  font-family: var(--font-mono); font-size: 10px;
  text-transform: uppercase; letter-spacing: 0.18em;
  color: var(--fg-2); margin: 0 0 18px;
}
.dirB .footer-col ul { list-style: none; padding: 0; margin: 0; }
.dirB .footer-col li { margin-bottom: 10px; }
.dirB .footer-col a {
  color: var(--fg-1); text-decoration: none; font-size: 14px;
  transition: color .15s;
}
.dirB .footer-col a:hover { color: var(--fg-0); }
.dirB .footer-bottom {
  display: flex; justify-content: space-between; padding-top: 28px;
  font-family: var(--font-mono); font-size: 10px;
  text-transform: uppercase; letter-spacing: 0.16em;
  color: var(--fg-2);
}

.dirB .contact-form {
  display: grid;
  gap: 14px;
  margin-top: 28px;
  max-width: 560px;
}
.dirB .contact-form label {
  display: grid;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fg-2);
}
.dirB .contact-form input,
.dirB .contact-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--bg-0);
  color: var(--fg-0);
  font-family: var(--font-sans);
  font-size: 15px;
  letter-spacing: 0;
  padding: 13px 14px;
  outline: none;
}
.dirB .contact-form textarea {
  resize: vertical;
  min-height: 130px;
}
.dirB .contact-form input:focus,
.dirB .contact-form textarea:focus {
  border-color: var(--accent);
}
.dirB .form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.dirB .form-honeypot {
  position: absolute;
  left: -9999px;
  opacity: 0;
}
.dirB .form-status {
  min-height: 20px;
  margin: 0;
  color: var(--fg-2);
  font-size: 13px;
  line-height: 1.45;
}
.dirB .form-status[data-state="success"] { color: var(--accent); }
.dirB .form-status[data-state="error"] { color: #d77; }

.dirB.products-page {
  min-height: 100vh;
}
.dirB .product-hero {
  position: relative;
  padding: 120px 40px 96px;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.dirB .products-list-section {
  padding-top: 90px;
}
.dirB .product-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.dirB .product-list-card {
  min-height: 100%;
}
.dirB .mount-placeholder svg {
  display: block;
}
.dirB .product-specs {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--line);
}
.dirB .product-specs div {
  display: grid;
  gap: 5px;
}
.dirB .product-specs dt {
  font-family: var(--font-mono);
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--fg-2);
}
.dirB .product-specs dd {
  margin: 0;
  color: var(--fg-1);
  font-size: 14px;
  line-height: 1.45;
}
.dirB .contact-footer-grid {
  grid-template-columns: minmax(280px, 0.8fr) minmax(320px, 1.2fr);
}
.dirB .modal-shell[hidden] {
  display: none;
}
.dirB .modal-shell {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 24px;
}
.dirB .modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(10px);
}
.dirB .modal-panel {
  position: relative;
  width: min(520px, 100%);
  background: var(--bg-1);
  border: 1px solid var(--line-strong);
  padding: 32px;
  box-shadow: 0 24px 90px rgba(0,0,0,0.38);
}
.dirB .modal-panel h2 {
  margin: 10px 0 12px;
  font-size: 34px;
  font-weight: 300;
  letter-spacing: -0.02em;
}
.dirB .modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 36px;
  height: 36px;
  border: 1px solid var(--line);
  background: var(--bg-0);
  color: var(--fg-0);
  font-size: 22px;
  cursor: pointer;
}
.dirB .modal-close:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.dirB [data-reveal] {
  opacity: 0; transform: translateY(24px);
  transition: opacity .9s ease, transform .9s ease;
}
.dirB [data-reveal].in { opacity: 1; transform: translateY(0); }

@media (max-width: 980px) {
  .dirB .nav {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .dirB .nav-links {
    justify-content: flex-start;
    flex-wrap: wrap;
  }
  .dirB .hero-frame,
  .dirB .footer-top,
  .dirB .contact-footer-grid {
    grid-template-columns: 1fr;
  }
  .dirB .metrics,
  .dirB .principles,
  .dirB .product-grid {
    grid-template-columns: 1fr 1fr;
  }
  .dirB .service-row {
    grid-template-columns: 1fr;
    gap: 12px;
  }
}

@media (max-width: 640px) {
  .dirB .hero,
  .dirB .section,
  .dirB .product-hero,
  .dirB .footer {
    padding-left: 22px;
    padding-right: 22px;
  }
  .dirB .hero-meta {
    left: 22px;
    right: 22px;
    gap: 12px;
    flex-direction: column;
  }
  .dirB .section-head,
  .dirB .form-grid,
  .dirB .metrics,
  .dirB .principles,
  .dirB .product-cards,
  .dirB .product-grid {
    grid-template-columns: 1fr;
    display: grid;
  }
  .dirB .section-head {
    gap: 28px;
  }
  .dirB .footer-bottom {
    flex-direction: column;
    gap: 10px;
  }
}