/* Aviation Blockchain — Per-segment cinematic pages
   Inherits the dark stack used on Aviation Blockchain.html (av-cin)
   plus segment-specific layouts: hero, use-case cards, signature widgets,
   data-flow diagram, related rail. */

.av-seg {
  --ac: #0EA5E9;
  --ac2: #F59E0B;
  --ac3: #38BDF8;
  --good: #22C55E;
  --bad: #EF4444;
  --bg: #050810;
  --panel: #0A0F1C;
  --panel2: #0D1424;
  --bd: rgba(255,255,255,0.08);
  --bd2: rgba(255,255,255,0.14);
  --txt: #E6EAF2;
  --txt2: #9098B0;
  --txt3: #6E7693;
}

/* segment-specific accent overrides */
.av-seg.s-airlines    { --ac: #0EA5E9; --ac2: #F59E0B; --ac3: #38BDF8; }
.av-seg.s-airports    { --ac: #22D3EE; --ac2: #FACC15; --ac3: #67E8F9; }
.av-seg.s-mro         { --ac: #F97316; --ac2: #EAB308; --ac3: #FB923C; }
.av-seg.s-cargo       { --ac: #10B981; --ac2: #34D399; --ac3: #6EE7B7; }
.av-seg.s-lessors     { --ac: #A78BFA; --ac2: #C084FC; --ac3: #DDD6FE; }
.av-seg.s-ground      { --ac: #38BDF8; --ac2: #F59E0B; --ac3: #93C5FD; }
.av-seg.s-authorities { --ac: #818CF8; --ac2: #FBBF24; --ac3: #A5B4FC; }
.av-seg.s-oem         { --ac: #F43F5E; --ac2: #FB7185; --ac3: #FDA4AF; }

.av-seg { background: var(--bg); color: var(--txt); }
.av-seg .av-s-wrap { max-width: 1280px; margin: 0 auto; padding: 0 32px; position: relative; }
.av-seg .av-s-eyebrow { display: inline-flex; align-items: center; gap: 8px; font: 500 11px/1 'JetBrains Mono', ui-monospace, monospace; letter-spacing: 0.16em; text-transform: uppercase; color: var(--txt2); margin-bottom: 18px; }
.av-seg .av-s-eyebrow .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--ac); box-shadow: 0 0 12px var(--ac); animation: av-s-pulse 2.4s ease-in-out infinite; }
@keyframes av-s-pulse { 0%,100% { opacity: .55 } 50% { opacity: 1 } }
.av-seg h2.av-s-h2 { font-size: clamp(36px, 4vw, 56px); line-height: 1.05; font-weight: 600; letter-spacing: -0.025em; margin: 0 0 14px; text-wrap: balance; }
.av-seg .av-s-h2 .ac { color: var(--ac); }
.av-seg .av-s-h2 .ac2 { color: var(--ac2); }
.av-seg .av-s-sub { font-size: 18px; line-height: 1.55; color: var(--txt2); max-width: 760px; text-wrap: pretty; margin: 0; }
.av-seg .av-s-section { position: relative; padding: 96px 0; overflow: hidden; }

/* ===================== HERO ===================== */
.av-seg .av-s-hero {
  position: relative; padding: 80px 0 96px; overflow: hidden;
  background:
    radial-gradient(1200px 700px at 20% 18%, color-mix(in oklab, var(--ac) 18%, transparent), transparent 60%),
    radial-gradient(900px 600px at 82% 80%, color-mix(in oklab, var(--ac2) 14%, transparent), transparent 60%),
    linear-gradient(180deg, #050810 0%, #0A0F1C 100%);
}
.av-seg .av-s-hero::before { content: ''; position: absolute; inset: 0; background-image: linear-gradient(color-mix(in oklab, var(--ac) 5%, transparent) 1px, transparent 1px), linear-gradient(90deg, color-mix(in oklab, var(--ac) 5%, transparent) 1px, transparent 1px); background-size: 80px 80px; mask: linear-gradient(180deg, transparent 0%, black 20%, black 80%, transparent 100%); }
.av-seg .av-s-hero-grid { position: relative; display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; }
@media (max-width: 1024px) { .av-seg .av-s-hero-grid { grid-template-columns: 1fr; gap: 40px; } }
.av-seg .av-s-pill { display: inline-flex; align-items: center; gap: 10px; padding: 8px 14px; border: 1px solid var(--bd); border-radius: 999px; background: rgba(255,255,255,0.02); font: 500 11px/1 'JetBrains Mono', ui-monospace, monospace; letter-spacing: 0.16em; text-transform: uppercase; color: var(--txt2); margin-bottom: 22px; }
.av-seg .av-s-pill .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--ac); box-shadow: 0 0 12px var(--ac); }
.av-seg .av-s-h1 { font-size: clamp(48px, 5.6vw, 84px); line-height: 0.98; letter-spacing: -0.03em; font-weight: 600; margin: 0 0 22px; text-wrap: balance; }
.av-seg .av-s-h1 .ac { color: var(--ac); }
.av-seg .av-s-hero-sub { font-size: 19px; line-height: 1.55; color: var(--txt2); max-width: 580px; margin: 0 0 32px; }
.av-seg .av-s-ctas { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 36px; }
.av-seg .av-s-cta { display: inline-flex; align-items: center; gap: 8px; padding: 14px 22px; border-radius: 999px; font-size: 14px; font-weight: 600; text-decoration: none; transition: transform .2s, background .2s; }
.av-seg .av-s-cta:hover { transform: translateY(-1px); }
.av-seg .av-s-cta.primary { background: var(--ac); color: #050810; }
.av-seg .av-s-cta.ghost { background: rgba(255,255,255,0.05); color: var(--txt); border: 1px solid var(--bd); }
.av-seg .av-s-trust { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; padding-top: 26px; border-top: 1px solid var(--bd); }
@media (max-width: 640px) { .av-seg .av-s-trust { grid-template-columns: repeat(2, 1fr); } }
.av-seg .av-s-trust div { font-size: 12px; color: var(--txt3); line-height: 1.5; }
.av-seg .av-s-trust div span { display: block; font: 500 13px/1 'JetBrains Mono', ui-monospace, monospace; color: var(--ac); margin-bottom: 4px; letter-spacing: 0.04em; }

.av-seg .av-s-hero-right { position: relative; height: 620px; }
@media (max-width: 1024px) { .av-seg .av-s-hero-right { height: 520px; } }
.av-seg .av-s-hero-photo { position: absolute; inset: 0; border-radius: 22px; overflow: hidden; border: 1px solid var(--bd); box-shadow: 0 30px 80px rgba(0,0,0,0.5); }
.av-seg .av-s-hero-photo img { width: 100%; height: 100%; object-fit: cover; display: block; }
.av-seg .av-s-hero-photo-overlay { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(5,8,16,0.25) 0%, rgba(5,8,16,0.85) 100%); pointer-events: none; }
.av-seg .av-s-hero-tag { position: absolute; top: 24px; right: 24px; display: inline-flex; align-items: center; gap: 8px; padding: 6px 12px; background: rgba(10,15,28,0.92); backdrop-filter: blur(10px); border: 1px solid var(--bd); border-radius: 999px; font: 500 11px/1 'JetBrains Mono', ui-monospace, monospace; color: var(--ac); letter-spacing: 0.1em; }
.av-seg .av-s-hero-tag .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--ac); box-shadow: 0 0 10px var(--ac); animation: av-s-pulse 1.4s ease-in-out infinite; }
.av-seg .av-s-hero-card { position: absolute; top: 24px; left: 24px; width: 290px; background: rgba(10,15,28,0.92); backdrop-filter: blur(10px); border: 1px solid var(--bd); border-radius: 14px; padding: 16px; box-shadow: 0 20px 60px rgba(0,0,0,0.5); }
.av-seg .av-s-hero-card-h { display: flex; justify-content: space-between; align-items: center; font: 500 10px/1 'JetBrains Mono', ui-monospace, monospace; color: var(--txt3); letter-spacing: 0.14em; text-transform: uppercase; margin-bottom: 14px; }
.av-seg .av-s-hero-card-h .st { color: var(--ac3); display: inline-flex; align-items: center; gap: 6px; }
.av-seg .av-s-hero-card-h .st::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--ac3); box-shadow: 0 0 8px var(--ac3); animation: av-s-pulse 1.4s ease-in-out infinite; }
.av-seg .av-s-hero-card-row { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px dashed rgba(255,255,255,0.06); font-size: 12px; }
.av-seg .av-s-hero-card-row:last-of-type { border-bottom: none; }
.av-seg .av-s-hero-card-row .l { color: var(--txt3); }
.av-seg .av-s-hero-card-row .v { color: var(--txt); font: 500 12px/1 'JetBrains Mono', ui-monospace, monospace; letter-spacing: 0.04em; }
.av-seg .av-s-hero-card-row .v.ac { color: var(--ac); }
.av-seg .av-s-hero-kpi { position: absolute; bottom: 24px; right: 24px; background: rgba(10,15,28,0.92); backdrop-filter: blur(10px); border: 1px solid var(--bd); border-radius: 14px; padding: 16px 20px; min-width: 220px; box-shadow: 0 20px 60px rgba(0,0,0,0.5); }
.av-seg .av-s-hero-kpi-l { font: 500 10px/1 'JetBrains Mono', ui-monospace, monospace; color: var(--txt3); letter-spacing: 0.14em; text-transform: uppercase; margin-bottom: 8px; }
.av-seg .av-s-hero-kpi-v { font: 600 32px/1 'JetBrains Mono', ui-monospace, monospace; color: var(--ac); letter-spacing: -0.02em; margin-bottom: 4px; }
.av-seg .av-s-hero-kpi-d { font-size: 11px; color: var(--txt2); }

/* ===================== WHY BLOCKCHAIN PILLARS ===================== */
.av-seg .av-s-pillars { background: linear-gradient(180deg, var(--bg) 0%, var(--panel) 100%); border-top: 1px solid var(--bd); border-bottom: 1px solid var(--bd); }
.av-seg .av-s-pillars-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 36px; }
@media (max-width: 900px) { .av-seg .av-s-pillars-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 540px) { .av-seg .av-s-pillars-grid { grid-template-columns: 1fr; } }
.av-seg .av-s-pillar { position: relative; padding: 24px 22px; border-radius: 16px; border: 1px solid var(--bd); background: rgba(255,255,255,0.02); transition: border-color .25s, background .25s; }
.av-seg .av-s-pillar:hover { border-color: color-mix(in oklab, var(--ac) 40%, transparent); background: rgba(255,255,255,0.04); }
.av-seg .av-s-pillar-n { font: 500 11px/1 'JetBrains Mono', ui-monospace, monospace; color: var(--ac); letter-spacing: 0.14em; margin-bottom: 14px; }
.av-seg .av-s-pillar-h { font-size: 18px; font-weight: 600; color: var(--txt); margin: 0 0 8px; letter-spacing: -0.01em; }
.av-seg .av-s-pillar-d { font-size: 13px; line-height: 1.55; color: var(--txt2); margin: 0; }

/* ===================== USE CASES CINEMA ===================== */
.av-seg .av-s-uc-list { display: grid; gap: 26px; margin-top: 40px; }
.av-seg .av-s-uc { display: grid; grid-template-columns: 1fr 1.1fr; gap: 32px; align-items: stretch; border-radius: 22px; border: 1px solid var(--bd); background: var(--panel); overflow: hidden; transition: border-color .3s, transform .3s; }
.av-seg .av-s-uc:hover { border-color: color-mix(in oklab, var(--ac) 35%, transparent); }
.av-seg .av-s-uc.flip { grid-template-columns: 1.1fr 1fr; }
.av-seg .av-s-uc.flip .av-s-uc-media { order: 2; }
@media (max-width: 900px) { .av-seg .av-s-uc, .av-seg .av-s-uc.flip { grid-template-columns: 1fr; } .av-seg .av-s-uc.flip .av-s-uc-media { order: 0; } }
.av-seg .av-s-uc-media { position: relative; min-height: 360px; overflow: hidden; }
.av-seg .av-s-uc-media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.av-seg .av-s-uc-media::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(5,8,16,0.1) 0%, rgba(5,8,16,0.65) 100%); pointer-events: none; }
.av-seg .av-s-uc-media-overlay { position: absolute; left: 20px; right: 20px; bottom: 20px; display: flex; flex-direction: column; gap: 8px; z-index: 1; }
.av-seg .av-s-uc-num { position: absolute; top: 18px; left: 20px; font: 500 11px/1 'JetBrains Mono', ui-monospace, monospace; color: var(--ac); letter-spacing: 0.12em; padding: 6px 10px; background: rgba(5,8,16,0.7); border: 1px solid var(--bd); border-radius: 6px; z-index: 1; }
.av-seg .av-s-uc-chip { display: inline-flex; align-items: center; gap: 6px; padding: 5px 10px; border-radius: 999px; background: rgba(5,8,16,0.78); backdrop-filter: blur(6px); border: 1px solid var(--bd); font: 500 10px/1 'JetBrains Mono', ui-monospace, monospace; color: var(--ac); letter-spacing: 0.1em; text-transform: uppercase; width: max-content; }
.av-seg .av-s-uc-chip .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--ac); box-shadow: 0 0 8px var(--ac); }
.av-seg .av-s-uc-body { padding: 32px 36px; display: flex; flex-direction: column; justify-content: center; }
.av-seg .av-s-uc-tag { font: 500 11px/1 'JetBrains Mono', ui-monospace, monospace; color: var(--ac); letter-spacing: 0.14em; text-transform: uppercase; margin-bottom: 12px; }
.av-seg .av-s-uc-h { font-size: 28px; line-height: 1.15; font-weight: 600; color: var(--txt); margin: 0 0 12px; letter-spacing: -0.015em; }
.av-seg .av-s-uc-d { font-size: 15px; line-height: 1.6; color: var(--txt2); margin: 0 0 22px; }
.av-seg .av-s-uc-flow { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; padding: 18px 0; border-top: 1px solid var(--bd); border-bottom: 1px solid var(--bd); margin-bottom: 20px; }
@media (max-width: 600px) { .av-seg .av-s-uc-flow { grid-template-columns: 1fr; } }
.av-seg .av-s-uc-flow .col h4 { font: 500 10px/1 'JetBrains Mono', ui-monospace, monospace; color: var(--txt3); letter-spacing: 0.16em; text-transform: uppercase; margin: 0 0 8px; }
.av-seg .av-s-uc-flow .col.bad h4 { color: color-mix(in oklab, var(--bad) 70%, var(--txt3)); }
.av-seg .av-s-uc-flow .col.good h4 { color: var(--ac); }
.av-seg .av-s-uc-flow .col p { margin: 0; font-size: 13px; line-height: 1.55; color: var(--txt2); }
.av-seg .av-s-uc-feats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px 18px; margin: 0 0 22px; padding: 0; list-style: none; }
@media (max-width: 600px) { .av-seg .av-s-uc-feats { grid-template-columns: 1fr; } }
.av-seg .av-s-uc-feats li { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--txt2); }
.av-seg .av-s-uc-feats li .tick { width: 16px; height: 16px; flex-shrink: 0; border-radius: 50%; background: color-mix(in oklab, var(--ac) 18%, transparent); color: var(--ac); display: grid; place-items: center; }
.av-seg .av-s-uc-feats li .tick svg { width: 9px; height: 9px; }
.av-seg .av-s-uc-kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.av-seg .av-s-uc-kpis .v { font: 500 22px/1 'JetBrains Mono', ui-monospace, monospace; color: var(--ac); letter-spacing: -0.02em; margin-bottom: 6px; }
.av-seg .av-s-uc-kpis .l { font-size: 11px; color: var(--txt3); letter-spacing: 0.06em; }

/* ===================== SIGNATURE WIDGET FRAME ===================== */
.av-seg .av-s-sig { background: linear-gradient(180deg, var(--panel) 0%, var(--bg) 100%); }
.av-seg .av-s-sig-frame { margin-top: 40px; border-radius: 22px; border: 1px solid var(--bd); background: var(--panel); padding: 28px; box-shadow: 0 30px 80px rgba(0,0,0,0.5); }
.av-seg .av-s-sig-hd { display: flex; align-items: center; justify-content: space-between; margin-bottom: 22px; padding-bottom: 18px; border-bottom: 1px solid var(--bd); gap: 16px; flex-wrap: wrap; }
.av-seg .av-s-sig-hd-l { font: 500 11px/1 'JetBrains Mono', ui-monospace, monospace; color: var(--txt2); letter-spacing: 0.14em; text-transform: uppercase; }
.av-seg .av-s-sig-hd-r { display: inline-flex; align-items: center; gap: 12px; }
.av-seg .av-s-sig-live { display: inline-flex; align-items: center; gap: 8px; padding: 6px 12px; border-radius: 999px; background: color-mix(in oklab, var(--ac) 14%, transparent); color: var(--ac); font: 500 10px/1 'JetBrains Mono', ui-monospace, monospace; letter-spacing: 0.12em; }
.av-seg .av-s-sig-live .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--ac); box-shadow: 0 0 8px var(--ac); animation: av-s-pulse 1.4s ease-in-out infinite; }
.av-seg .av-s-sig-meta { display: flex; gap: 14px; font: 500 11px/1 'JetBrains Mono', ui-monospace, monospace; color: var(--txt3); letter-spacing: 0.06em; }
.av-seg .av-s-sig-meta b { color: var(--ac3); font-weight: 500; }

/* ===================== DATA FLOWS (in/out diagram) ===================== */
.av-seg .av-s-flow { border-top: 1px solid var(--bd); border-bottom: 1px solid var(--bd); background: linear-gradient(180deg, var(--panel) 0%, var(--panel2) 100%); }
.av-seg .av-s-flow-grid { display: grid; grid-template-columns: 1fr 1.1fr 1fr; gap: 26px; margin-top: 36px; align-items: stretch; }
@media (max-width: 900px) { .av-seg .av-s-flow-grid { grid-template-columns: 1fr; } }
.av-seg .av-s-flow-col { padding: 22px 22px; border-radius: 16px; border: 1px solid var(--bd); background: rgba(255,255,255,0.02); }
.av-seg .av-s-flow-col.core { background: linear-gradient(180deg, color-mix(in oklab, var(--ac) 14%, transparent), color-mix(in oklab, var(--ac) 4%, transparent)); border-color: color-mix(in oklab, var(--ac) 35%, transparent); position: relative; }
.av-seg .av-s-flow-col.core::after { content: ''; position: absolute; inset: -1px; border-radius: 16px; box-shadow: 0 0 50px color-mix(in oklab, var(--ac) 16%, transparent); pointer-events: none; }
.av-seg .av-s-flow-eyebrow { font: 500 10px/1 'JetBrains Mono', ui-monospace, monospace; color: var(--ac); letter-spacing: 0.14em; text-transform: uppercase; margin-bottom: 14px; }
.av-seg .av-s-flow-col h3 { font-size: 17px; font-weight: 600; color: var(--txt); margin: 0 0 16px; letter-spacing: -0.01em; }
.av-seg .av-s-flow-items { display: grid; gap: 8px; }
.av-seg .av-s-flow-item { display: flex; align-items: center; gap: 10px; padding: 11px 12px; border-radius: 10px; background: rgba(255,255,255,0.02); border: 1px solid var(--bd); font-size: 12.5px; color: var(--txt2); }
.av-seg .av-s-flow-item .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--ac); flex-shrink: 0; box-shadow: 0 0 6px var(--ac); }
.av-seg .av-s-flow-item b { color: var(--txt); font-weight: 500; }
.av-seg .av-s-flow-col.core h3 { color: var(--ac3); }

/* ===================== OUTCOMES STRIP ===================== */
.av-seg .av-s-outcomes { padding: 64px 0; background: linear-gradient(135deg, var(--panel) 0%, var(--panel2) 100%); border-top: 1px solid var(--bd); border-bottom: 1px solid var(--bd); }
.av-seg .av-s-outcomes-eyebrow { text-align: center; margin-bottom: 8px; }
.av-seg .av-s-outcomes-h { text-align: center; font-size: clamp(28px, 3vw, 40px); font-weight: 600; color: var(--txt); margin: 0 0 36px; letter-spacing: -0.02em; }
.av-seg .av-s-outcomes-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
@media (max-width: 768px) { .av-seg .av-s-outcomes-grid { grid-template-columns: repeat(2, 1fr); gap: 22px; } }
.av-seg .av-s-outcomes-grid .o { padding: 24px; border-radius: 16px; border: 1px solid var(--bd); background: rgba(255,255,255,0.02); position: relative; overflow: hidden; }
.av-seg .av-s-outcomes-grid .o::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: linear-gradient(180deg, var(--ac), transparent); }
.av-seg .av-s-outcomes-grid .v { font: 500 clamp(36px, 4vw, 52px) / 1 'JetBrains Mono', ui-monospace, monospace; color: var(--ac); letter-spacing: -0.02em; margin-bottom: 12px; }
.av-seg .av-s-outcomes-grid .l { font-size: 13px; color: var(--txt2); line-height: 1.55; }

/* ===================== CTA + RELATED ===================== */
.av-seg .av-s-cta-section { padding: 80px 0; background: linear-gradient(135deg, color-mix(in oklab, var(--ac) 10%, transparent), color-mix(in oklab, var(--ac2) 6%, transparent)); border-top: 1px solid var(--bd); }
.av-seg .av-s-cta-card { max-width: 980px; margin: 0 auto; text-align: center; padding: 0 32px; }
.av-seg .av-s-cta-h { font-size: clamp(36px, 4vw, 52px); line-height: 1.1; font-weight: 600; letter-spacing: -0.02em; margin: 0 0 16px; color: var(--txt); }
.av-seg .av-s-cta-sub { font-size: 18px; color: var(--txt2); line-height: 1.55; margin: 0 auto 28px; max-width: 640px; }
.av-seg .av-s-cta-row { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; }

.av-seg .av-s-related { padding: 80px 0; }
.av-seg .av-s-related-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 32px; }
@media (max-width: 900px) { .av-seg .av-s-related-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 540px) { .av-seg .av-s-related-grid { grid-template-columns: 1fr; } }
.av-seg .av-s-related-item { display: block; padding: 18px 20px; border-radius: 14px; border: 1px solid var(--bd); background: rgba(255,255,255,0.02); text-decoration: none; color: inherit; transition: all .25s; }
.av-seg .av-s-related-item:hover { border-color: color-mix(in oklab, var(--ac) 40%, transparent); background: rgba(255,255,255,0.04); transform: translateY(-2px); }
.av-seg .av-s-related-item .tag { font: 500 10px/1 'JetBrains Mono', ui-monospace, monospace; color: var(--ac); letter-spacing: 0.12em; margin-bottom: 8px; text-transform: uppercase; }
.av-seg .av-s-related-item .h { font-size: 15px; font-weight: 600; color: var(--txt); margin: 0 0 4px; }
.av-seg .av-s-related-item .d { font-size: 12px; color: var(--txt3); line-height: 1.5; }