/* =========================================================
   NASDAN — Blockchain & Web3 page
   Dominant visual metaphor: Network/Ecosystem
   (Users → Wallet → Application → Smart Contract → Blockchain → APIs/Data)
   Extends tokens.css / main.css. Section-specific styles only.
   ========================================================= */

/* =========================================================
   1. HERO — network hub diagram
   Background matches the Contact page's treatment exactly: same
   navy gradient, same soft dot pattern, same amber glow stripe
   (see .contact-hero / .contact-hero::before / .contact-hero-stripe
   in contact.css, also ported this way to .hwb-hero, .cli-hero,
   .dvo-hero, .cyb-hero and .ai-hero on the other service pages).
   The isometric cube lattice visual sits on top, unchanged.
   ========================================================= */
.bcw-hero {
  position: relative;
  padding-block: var(--sp-9) var(--sp-8);
  background: linear-gradient(150deg, var(--nasdan-navy) 0%, var(--nasdan-navy-700) 100%);
  overflow: hidden;
}
.bcw-hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: radial-gradient(rgba(255,255,255,0.16) 1px, transparent 1px);
  background-size: 26px 26px;
  -webkit-mask-image: linear-gradient(150deg, rgba(0,0,0,0.9) 0%, transparent 60%);
  mask-image: linear-gradient(150deg, rgba(0,0,0,0.9) 0%, transparent 60%);
}
.bcw-hero-stripe {
  position: absolute; top: -10%; right: -8%; width: 46%; aspect-ratio: 1/1;
  background: radial-gradient(circle, rgba(255,193,7,0.28) 0%, rgba(255,193,7,0) 70%);
  filter: blur(6px); pointer-events: none;
}
.bcw-hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1fr 0.92fr; gap: var(--sp-8); align-items: center; }
.bcw-hero-inner { position: relative; z-index: 1; text-align: left; }
.bcw-hero-eyebrow { display: inline-flex; align-items: center; gap: var(--sp-2); margin-bottom: var(--sp-3); color: var(--nasdan-amber); }
.bcw-hero-eyebrow .eyebrow-mark { background: var(--nasdan-amber); }
.bcw-hero-headline {
  font-size: var(--fs-h1); font-weight: var(--fw-light); letter-spacing: var(--ls-tight);
  line-height: var(--lh-tight); color: var(--white); margin-bottom: var(--sp-4); max-width: 16ch;
}
.bcw-hero-lead { font-size: var(--fs-body); max-width: 50ch; margin-bottom: var(--sp-6); color: var(--paper-300); }
.bcw-hero-actions { display: flex; gap: var(--sp-3); flex-wrap: wrap; }
.bcw-hero-actions .btn-ghost-nasdan { color: var(--white); border-color: rgba(255,255,255,0.32); }
.bcw-hero-actions .btn-ghost-nasdan:hover { background: rgba(255,255,255,0.08); border-color: var(--white); }

/* --- blockchain node visual: isometric cube lattice --- */
.bcw-node-visual { position: relative; z-index: 1; }
.bcw-cube-grid { display: block; width: 100%; height: auto; }
.bcw-cube { transition: transform var(--dur-slow) var(--ease-out); }
.bcw-cube--main { animation: bcwCubeFloat 3.6s ease-in-out infinite; transform-origin: 300px 139px; }
@keyframes bcwCubeFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}
.bcw-cube-label {
  position: absolute; left: 55.6%; top: 66%; transform: translate(-50%, 0);
  display: inline-flex; align-items: center; gap: 0.4rem;
  padding: 0.4rem 0.85rem; border-radius: var(--radius-pill);
  background: rgba(10,16,38,0.55); border: 1px solid rgba(255,193,7,0.4);
  backdrop-filter: blur(6px); white-space: nowrap;
  font-size: 0.75rem; font-weight: var(--fw-medium); color: var(--white); letter-spacing: var(--ls-snug);
}
.bcw-cube-label-dot {
  width: 6px; height: 6px; border-radius: 50%; background: var(--nasdan-amber);
  box-shadow: 0 0 0 3px rgba(255,193,7,0.25); animation: bcwDotPulse 1.8s ease-in-out infinite;
}
@keyframes bcwDotPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* =========================================================
   2. WHAT WE BUILD — asymmetric block grid + capability strip
   ========================================================= */
.bcw-build { padding-block: var(--section-pad-y); }
.bcw-block-grid {
  margin-top: var(--sp-7); display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-areas:
    "feature feature b c"
    "feature feature d e"
    "f f f f";
  gap: var(--sp-4);
}
.bcw-block {
  position: relative; display: flex; flex-direction: column; gap: var(--sp-3);
  padding: var(--sp-6); border-radius: var(--radius-lg); border: 1px solid var(--ink-200); background: var(--white);
  transition: transform var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out), border-color var(--dur-base) var(--ease-out);
}
.bcw-block:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: rgba(255,193,7,0.4); }
.bcw-block--feature {
  grid-area: feature; justify-content: center;
  background: linear-gradient(155deg, var(--nasdan-navy) 0%, var(--nasdan-navy-700) 100%); border-color: transparent;
}
.bcw-block--wide { grid-area: f; flex-direction: row; align-items: center; gap: var(--sp-6); }
.bcw-block--wide .bcw-block-top { flex: none; flex-direction: column; align-items: flex-start; gap: var(--sp-3); }
.bcw-block--wide h3 { margin-bottom: 0; }
.bcw-block-top { display: flex; align-items: center; justify-content: space-between; gap: var(--sp-3); }
.bcw-block-index {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace; font-size: 0.75rem;
  color: var(--ink-400); letter-spacing: var(--ls-wide);
}
.bcw-block--feature .bcw-block-index { color: rgba(255,255,255,0.45); }
.bcw-block-tag {
  white-space: nowrap; font-size: 0.6875rem; font-weight: var(--fw-medium); color: var(--nasdan-navy);
  background: var(--nasdan-amber); border: 1px solid transparent;
  padding: 0.25rem 0.55rem; border-radius: var(--radius-pill);
}
.bcw-block h3 { font-size: 1.0625rem; font-weight: var(--fw-medium); color: var(--ink-900); }
.bcw-block--feature h3 { font-size: 1.375rem; color: var(--white); }
.bcw-block p { font-size: 0.875rem; color: var(--ink-500); line-height: var(--lh-relaxed); margin: 0; }
.bcw-block--feature p { color: var(--paper-300); max-width: 34ch; }

.bcw-also { margin-top: var(--sp-8); padding-top: var(--sp-6); border-top: 1px solid var(--ink-200); display: flex; align-items: center; gap: var(--sp-5); flex-wrap: wrap; }
.bcw-also-label { flex: none; font-size: 0.75rem; font-weight: var(--fw-semibold); letter-spacing: var(--ls-wider); text-transform: uppercase; color: var(--ink-400); }
.bcw-also-chips { display: flex; flex-wrap: wrap; gap: var(--sp-3); }
.bcw-chip {
  flex: none; white-space: nowrap; font-size: 0.8438rem; color: var(--ink-700); background: var(--cloud); border: 1px solid var(--ink-200);
  padding: 0.5rem 0.9rem; border-radius: var(--radius-pill); transition: background-color var(--dur-base) var(--ease-out), border-color var(--dur-base) var(--ease-out), color var(--dur-base) var(--ease-out);
}
.bcw-chip:hover { background: var(--nasdan-amber); border-color: var(--nasdan-amber); color: var(--nasdan-navy); }

/* --- shared inline CTA --- */
.bcw-inline-cta {
  display: flex; align-items: center; justify-content: space-between; gap: var(--sp-5); flex-wrap: wrap;
  margin-top: var(--sp-7); padding: var(--sp-5) var(--sp-6);
  border: 1px solid var(--ink-200); border-radius: var(--radius-lg);
}
.bcw-inline-cta p { margin: 0; color: var(--ink-700); font-size: 0.9375rem; max-width: 52ch; }
.bcw-inline-cta--dark { border-color: rgba(255,255,255,0.14); background: rgba(255,255,255,0.04); }
.bcw-inline-cta--dark p { color: var(--paper-300); }

/* =========================================================
   3. BLOCKCHAIN PLATFORMS WE WORK WITH — tabbed network explorer
   Solid NASDAN amber section (same treatment as
   .industries-section--amber in main.css): navy-tinted texture,
   navy text/borders throughout instead of the light-surface tones.
   ========================================================= */
.bcw-platforms { position: relative; overflow: hidden; padding-block: var(--section-pad-y-lg); background: var(--nasdan-amber); }
.bcw-platforms::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: radial-gradient(rgba(11,22,63,0.08) 1px, transparent 1px);
  background-size: 26px 26px;
}
.bcw-platforms .container-nasdan { position: relative; z-index: 1; }
.bcw-platforms-head { display: grid; grid-template-columns: 0.85fr 1fr; gap: var(--sp-8); align-items: end; margin-bottom: var(--sp-8); }
.bcw-platforms-head .text-h2 { margin-bottom: 0; max-width: 14ch; color: var(--nasdan-navy); }
.bcw-platforms-head .text-lead { color: var(--ink-700); margin-bottom: 0; }

.bcw-platform-tabs { display: flex; gap: var(--sp-2); flex-wrap: wrap; border-bottom: 1px solid rgba(11,22,63,0.16); }
.bcw-platform-tab {
  padding: var(--sp-3) var(--sp-4); background: none; border: none; border-bottom: 2px solid transparent;
  margin-bottom: -1px; font-size: 0.9375rem; font-weight: var(--fw-medium); color: rgba(11,22,63,0.55);
  cursor: pointer; transition: color var(--dur-base) var(--ease-out), border-color var(--dur-base) var(--ease-out);
}
.bcw-platform-tab:hover { color: var(--nasdan-navy); }
.bcw-platform-tab.is-active { color: var(--nasdan-navy); border-bottom-color: var(--nasdan-navy); }

.bcw-platform-panel { display: none; }
.bcw-platform-panel.is-active { display: block; animation: bcwPanelFade 0.35s var(--ease-out); }
@keyframes bcwPanelFade {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}
.bcw-platform-grid { padding-top: var(--sp-8); display: grid; grid-template-columns: 1.5fr 1fr; gap: var(--sp-9); align-items: start; }
.bcw-platform-icon {
  display: flex; align-items: center; justify-content: center; width: 56px; height: 56px;
  border-radius: var(--radius-md); background: var(--white); border: 1px solid rgba(11,22,63,0.16); color: var(--nasdan-navy);
  margin-bottom: var(--sp-5);
}
.bcw-platform-icon svg { width: 30px; height: 30px; }
.bcw-platform-desc { font-size: 1.0625rem; color: var(--ink-700); line-height: var(--lh-relaxed); max-width: 56ch; margin-bottom: var(--sp-7); }
.bcw-platform-features-label {
  display: inline-flex; align-items: center; gap: 0.4rem; font-size: 0.8125rem; font-weight: var(--fw-semibold);
  letter-spacing: var(--ls-wide); text-transform: uppercase; color: var(--nasdan-navy);
  padding-bottom: var(--sp-3); border-bottom: 1px solid rgba(11,22,63,0.16); margin-bottom: var(--sp-4); width: 100%; display: flex;
}
.bcw-platform-features-label svg { width: 14px; height: 14px; color: var(--nasdan-navy); }
.bcw-platform-features-list { display: grid; grid-template-columns: 1fr 1fr; column-gap: var(--sp-6); row-gap: var(--sp-3); }
.bcw-platform-features-list span { font-size: 0.9375rem; color: var(--ink-700); }
.bcw-platform-stats { display: flex; flex-direction: column; gap: var(--sp-6); padding-top: var(--sp-8); border-top: 1px solid rgba(11,22,63,0.16); }
.bcw-platform-stat strong { display: block; font-size: 1.375rem; font-weight: var(--fw-semibold); color: var(--nasdan-navy); margin-bottom: 0.2rem; }
.bcw-platform-stat span { font-size: 0.875rem; color: var(--ink-700); }

/* =========================================================
   4. THE SCOPE OF OUR BLOCKCHAIN SERVICES — navy intro card beside
   a light accordion (kept off full-bleed navy so it doesn't fuse
   with the navy security section right after it)
   ========================================================= */
.bcw-scope { padding-block: var(--section-pad-y); background: var(--white); }
.bcw-scope-grid { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: var(--sp-9); align-items: start; }
.bcw-scope-intro {
  position: sticky; top: var(--sp-8); overflow: hidden;
  background: linear-gradient(155deg, var(--nasdan-navy) 0%, var(--nasdan-navy-700) 100%);
  border-radius: var(--radius-lg); padding: var(--sp-8) var(--sp-7);
}
.bcw-scope-intro::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: radial-gradient(rgba(255,255,255,0.14) 1px, transparent 1px);
  background-size: 22px 22px;
  -webkit-mask-image: radial-gradient(circle at 100% 100%, rgba(0,0,0,0.8) 0%, transparent 60%);
  mask-image: radial-gradient(circle at 100% 100%, rgba(0,0,0,0.8) 0%, transparent 60%);
}
.bcw-scope-intro > * { position: relative; z-index: 1; }
.bcw-scope-intro .text-h2 { margin-bottom: var(--sp-4); }

.bcw-scope-list { margin-top: 0; }

/* =========================================================
   5. SECURITY & AUDITS — navy section, audits as a linked chain
   ========================================================= */
.bcw-security { padding-block: var(--section-pad-y); background: var(--nasdan-navy); }
.bcw-security-head { max-width: 640px; margin-bottom: var(--sp-9); }
.bcw-security-head .text-h2 { margin-bottom: var(--sp-4); }

.bcw-audit-chain { position: relative; display: flex; justify-content: space-between; gap: var(--sp-4); }
.bcw-audit-track {
  position: absolute; left: 24px; right: 24px; top: 24px; height: 1px;
  background: repeating-linear-gradient(90deg, rgba(255,193,7,0.4) 0 6px, transparent 6px 12px);
}
.bcw-audit-node { position: relative; flex: 1; display: flex; flex-direction: column; align-items: flex-start; gap: var(--sp-4); max-width: 220px; }
.bcw-audit-num {
  flex: none; width: 48px; height: 48px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
  background: var(--nasdan-navy); border: 1px solid rgba(255,193,7,0.4); color: var(--nasdan-amber);
  font-size: 0.9375rem; font-weight: var(--fw-semibold);
  box-shadow: 0 0 0 6px var(--nasdan-navy);
}
.bcw-audit-copy strong { display: block; color: var(--white); font-size: 0.9375rem; font-weight: var(--fw-medium); margin-bottom: 0.3rem; }
.bcw-audit-copy p { color: var(--paper-300); font-size: 0.8438rem; line-height: var(--lh-relaxed); margin: 0; }

/* =========================================================
   6. WHEN BLOCKCHAIN MAKES SENSE
   ========================================================= */
.bcw-fit { padding-block: var(--section-pad-y); }
.bcw-fit-split { position: relative; display: grid; grid-template-columns: 1fr auto 1fr; align-items: stretch; gap: var(--sp-6); margin-top: var(--sp-7); }
.bcw-fit-col { border-radius: var(--radius-lg); padding: var(--sp-6); border: 1px solid var(--ink-200); }
.bcw-fit-col--yes { border-color: transparent; background: var(--nasdan-amber); }
.bcw-fit-col--no { background: var(--cloud); }
.bcw-fit-tag {
  display: inline-flex; font-size: 0.75rem; font-weight: var(--fw-semibold); letter-spacing: var(--ls-wider);
  text-transform: uppercase; margin-bottom: var(--sp-5);
}
.bcw-fit-col--yes .bcw-fit-tag { color: var(--nasdan-navy); }
.bcw-fit-col--no .bcw-fit-tag { color: var(--ink-500); }
.bcw-fit-col ul { display: flex; flex-direction: column; gap: var(--sp-4); list-style: none; padding: 0; margin: 0; }
.bcw-fit-col li { display: flex; align-items: flex-start; gap: var(--sp-3); font-size: 0.9375rem; color: var(--ink-700); line-height: var(--lh-relaxed); }
.bcw-fit-col--yes li { color: var(--nasdan-navy); }
.bcw-fit-icon { flex: none; width: 20px; height: 20px; margin-top: 0.1rem; }
.bcw-fit-icon svg { width: 100%; height: 100%; }
.bcw-fit-col--yes .bcw-fit-icon { color: var(--nasdan-navy); }
.bcw-fit-col--no .bcw-fit-icon { color: var(--ink-400); }
.bcw-fit-divider {
  display: flex; align-items: center; justify-content: center; width: 40px;
  color: var(--ink-300);
}
.bcw-fit-divider svg { width: 22px; height: 22px; }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 1199.98px) {
  .bcw-hero-grid { grid-template-columns: 1fr; }
  .bcw-node-visual { max-width: 460px; margin-inline: auto; }

  .bcw-block-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-template-areas:
      "feature feature"
      "b c"
      "d e"
      "f f";
  }

  .bcw-platforms-head { grid-template-columns: 1fr; gap: var(--sp-4); }
  .bcw-platform-grid { grid-template-columns: 1fr; gap: var(--sp-7); }
  .bcw-platform-stats {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-4);
    padding-top: var(--sp-6); border-top: 1px solid rgba(11,22,63,0.16);
  }
  .bcw-platform-stat strong { font-size: 1.125rem; }
  .bcw-platform-stat span { font-size: 0.75rem; line-height: var(--lh-snug); }

  .bcw-scope-grid { grid-template-columns: 1fr; gap: var(--sp-7); }
  .bcw-scope-intro { position: static; max-width: 56ch; }

  /* Audit chain rotates to a vertical track: numbered nodes stay
     linked instead of turning into disconnected floating circles. */
  .bcw-audit-chain { flex-direction: column; gap: 0; position: relative; }
  .bcw-audit-track {
    left: 23px; right: auto; top: 24px; bottom: 24px; width: 1px; height: auto;
    background: repeating-linear-gradient(180deg, rgba(255,193,7,0.4) 0 6px, transparent 6px 12px);
  }
  .bcw-audit-node { max-width: 100%; flex-direction: row; align-items: flex-start; padding-block: var(--sp-5); }

  .bcw-fit-split { grid-template-columns: 1fr; }
  .bcw-fit-divider { display: none; }
}

@media (max-width: 767.98px) {
  .bcw-hero { padding-block: var(--sp-8) var(--sp-6); }
  .bcw-hero-headline { max-width: 100%; font-size: clamp(1.75rem, 1.5rem + 2.2vw, 2.25rem); }
  .bcw-hero-actions { flex-direction: column; align-items: stretch; }
  .bcw-node-visual { max-width: 340px; }
  .bcw-cube-label { font-size: 0.6875rem; padding: 0.35rem 0.7rem; }

  .bcw-block-grid {
    grid-template-columns: 1fr;
    grid-template-areas: "feature" "b" "c" "d" "e" "f";
  }
  .bcw-block--wide { flex-direction: column; align-items: flex-start; }
  .bcw-block--wide .bcw-block-top { flex-direction: row; align-items: center; width: 100%; justify-content: space-between; }

  .bcw-also { flex-direction: column; align-items: flex-start; }
  /* "Also available" chips slide horizontally instead of wrapping
     into a tall stack on small screens. */
  .bcw-also-chips {
    flex-wrap: nowrap; width: 100%; overflow-x: auto; overscroll-behavior-x: contain;
    scroll-snap-type: x proximity; padding-bottom: var(--sp-2);
    margin-inline: calc(var(--sp-1) * -1); padding-inline: var(--sp-1);
    -ms-overflow-style: none; scrollbar-width: none;
  }
  .bcw-also-chips::-webkit-scrollbar { display: none; }
  .bcw-also-chips .bcw-chip { scroll-snap-align: start; }

  .bcw-platform-tabs { gap: 0; }
  .bcw-platform-tab { padding: var(--sp-3) var(--sp-3); font-size: 0.875rem; }
  .bcw-platform-features-list { grid-template-columns: 1fr; }

  .bcw-inline-cta { flex-direction: column; align-items: flex-start; }
}