/* ============================================================
   OSTENDA.AI — Design System
   Reading: institutional/B2B site for maritime, insurance,
   infrastructure, mining, logistics, defense buyers. Dark-tech,
   trust-first, instrument-panel restraint over spectacle.
   Dials — variance 6/10, motion 4/10, density 3/10.
   ============================================================ */

:root{
  /* Palette */
  --bg:            #06090d;
  --bg-alt:        #090d13;
  --surface:       #0e141c;
  --surface-2:     #121a24;
  --border:        rgba(230,238,246,0.09);
  --border-strong: rgba(230,238,246,0.16);
  --text:          #e9eef4;
  --text-dim:      #a7b3c0;
  --text-faint:    #62707e;

  --signal:        #3fe6cf;   /* trajectory cyan */
  --signal-dim:     rgba(63,230,207,0.35);
  --converge:      #ff9c4a;   /* convergence amber */
  --converge-dim:  rgba(255,156,74,0.35);
  --danger:        #ff6a6a;

  --font-display: 'Space Grotesk', 'IBM Plex Sans', sans-serif;
  --font-body:    'IBM Plex Sans', -apple-system, sans-serif;
  --font-mono:    'IBM Plex Mono', 'SFMono-Regular', monospace;

  --container: 1180px;
  --radius: 10px;
  --radius-lg: 18px;

  --ease: cubic-bezier(.16,.84,.44,1);
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,svg{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4{ font-family:var(--font-display); font-weight:600; line-height:1.12; margin:0; letter-spacing:-0.01em; }
p{ margin:0; }

/* Faint global basemap grid — reinforces cartographic identity site-wide */
body::before{
  content:"";
  position:fixed; inset:0;
  background-image:
    linear-gradient(rgba(230,238,246,0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(230,238,246,0.028) 1px, transparent 1px);
  background-size:64px 64px;
  pointer-events:none;
  z-index:0;
  mask-image:radial-gradient(ellipse 80% 60% at 50% 0%, black 40%, transparent 85%);
}

.container{ max-width:var(--container); margin:0 auto; padding:0 28px; position:relative; z-index:1; }
.section{ padding:112px 0; position:relative; z-index:1; }
.section-tight{ padding:72px 0; }
@media (max-width:720px){
  .section{ padding:72px 0; }
  .section-tight{ padding:48px 0; }
}

.eyebrow{
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--signal);
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-bottom:18px;
}
.eyebrow::before{
  content:"";
  width:7px; height:7px; border-radius:50%;
  background:var(--signal);
  box-shadow:0 0 10px 2px var(--signal-dim);
  animation:pulse-dot 2.6s ease-in-out infinite;
}
.eyebrow.amber{ color:var(--converge); }
.eyebrow.amber::before{ background:var(--converge); box-shadow:0 0 10px 2px var(--converge-dim); }

h1.display{ font-size:clamp(2.6rem, 5.4vw, 4.6rem); }
h2.display{ font-size:clamp(2rem, 3.6vw, 2.9rem); }
h3.display{ font-size:clamp(1.3rem, 2vw, 1.6rem); }

.lede{ font-size:clamp(1.05rem, 1.6vw, 1.25rem); color:var(--text-dim); max-width:620px; }
.dim{ color:var(--text-dim); }
.faint{ color:var(--text-faint); }
.mono{ font-family:var(--font-mono); }

/* ---------- Nav ---------- */
.site-nav{
  position:sticky; top:0; z-index:50;
  backdrop-filter:blur(14px) saturate(140%);
  background:rgba(6,9,13,0.72);
  border-bottom:1px solid var(--border);
}
.nav-row{
  display:flex; align-items:center; justify-content:space-between;
  height:72px;
}
.brand{ display:flex; align-items:center; gap:10px; font-family:var(--font-display); font-weight:600; font-size:1.05rem; }
.brand-mark{ width:22px; height:22px; }
.nav-links{ display:flex; gap:30px; align-items:center; }
.nav-links a{
  font-size:14.5px; color:var(--text-dim); font-weight:500;
  transition:color .2s var(--ease);
}
.nav-links a:hover, .nav-links a.active{ color:var(--text); }
.nav-cta{ display:flex; align-items:center; gap:18px; }
.nav-toggle{ display:none; background:none; border:1px solid var(--border-strong); border-radius:8px; padding:8px 10px; color:var(--text); }

@media (max-width:900px){
  .nav-links{
    position:absolute; top:72px; left:0; right:0;
    flex-direction:column; align-items:flex-start; gap:0;
    background:var(--bg-alt); border-bottom:1px solid var(--border);
    max-height:0; overflow:hidden; transition:max-height .3s var(--ease);
  }
  .nav-links.open{ max-height:420px; }
  .nav-links a{ padding:16px 28px; width:100%; border-bottom:1px solid var(--border); }
  .nav-toggle{ display:block; }
  .nav-cta .btn{ display:none; }
  .nav-cta .nav-toggle{ display:block; }
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; gap:8px;
  padding:12px 20px; border-radius:8px;
  font-size:14.5px; font-weight:600; font-family:var(--font-body);
  border:1px solid transparent; cursor:pointer;
  transition:transform .18s var(--ease), border-color .18s var(--ease), background .18s var(--ease);
  white-space:nowrap;
}
.btn-primary{ background:var(--text); color:var(--bg); }
.btn-primary:hover{ transform:translateY(-1px); background:#fff; }
.btn-ghost{ border-color:var(--border-strong); color:var(--text); background:transparent; }
.btn-ghost:hover{ border-color:var(--signal); color:var(--signal); }
.btn-arrow{ transition:transform .18s var(--ease); }
.btn:hover .btn-arrow{ transform:translateX(3px); }

/* ---------- Hero ---------- */
.hero{ padding:88px 0 40px; position:relative; }
.hero-grid{ display:grid; grid-template-columns:1.05fr 0.95fr; gap:56px; align-items:center; }
@media (max-width:960px){ .hero-grid{ grid-template-columns:1fr; } }
.hero h1{ margin-bottom:22px; }
.hero .lede{ margin-bottom:34px; }
.hero-actions{ display:flex; gap:14px; flex-wrap:wrap; }

/* ---------- Scene (SVG basemap art) frame ---------- */
.scene-frame{
  position:relative;
  border:1px solid var(--border-strong);
  border-radius:var(--radius-lg);
  background:linear-gradient(180deg, var(--surface), var(--bg-alt));
  overflow:hidden;
  box-shadow:0 40px 90px -30px rgba(0,0,0,0.65);
}
.scene-frame::after{
  content:"";
  position:absolute; inset:0;
  background:linear-gradient(180deg, transparent 60%, rgba(6,9,13,0.5));
  pointer-events:none;
}
.scene-tag{
  position:absolute; top:16px; left:18px; z-index:2;
  font-family:var(--font-mono); font-size:10.5px; letter-spacing:.08em;
  color:var(--text-faint); text-transform:uppercase;
  display:flex; align-items:center; gap:8px;
}
.scene-tag .rec{ width:6px; height:6px; border-radius:50%; background:var(--converge); box-shadow:0 0 8px 2px var(--converge-dim); animation:pulse-dot 1.8s ease-in-out infinite; }
.scene-caption{
  position:absolute; bottom:0; left:0; right:0; z-index:2;
  padding:14px 18px; font-family:var(--font-mono); font-size:11px; color:var(--text-faint);
  border-top:1px solid var(--border);
  background:rgba(6,9,13,0.55);
  display:flex; justify-content:space-between; gap:10px;
}

/* SVG scene internals */
.scene-svg .grid-line{ stroke:rgba(230,238,246,0.06); stroke-width:1; }
.scene-svg .contour{ fill:none; stroke:rgba(230,238,246,0.09); stroke-width:1; }
.scene-svg .traj{
  fill:none; stroke:var(--signal); stroke-width:1.6; stroke-linecap:round;
  filter:drop-shadow(0 0 5px var(--signal-dim));
  stroke-dasharray:900; stroke-dashoffset:900;
  animation:draw 3.2s var(--ease) forwards;
}
.scene-svg .traj-alt{ stroke:#7fb8ff; filter:drop-shadow(0 0 5px rgba(127,184,255,.35)); }
.scene-svg .traj-dim{ stroke:rgba(63,230,207,0.4); stroke-width:1.1; }
.scene-svg .node{ fill:var(--signal); filter:drop-shadow(0 0 6px var(--signal-dim)); }
.scene-svg .node-converge{
  fill:var(--converge);
  filter:drop-shadow(0 0 10px var(--converge-dim));
  animation:pulse-node 2.4s ease-in-out infinite;
}
.scene-svg .ring{ fill:none; stroke:var(--converge); stroke-width:1; opacity:.55; animation:ring-expand 2.4s ease-out infinite; transform-origin:center; }
.scene-svg .hud-text{ font-family:var(--font-mono); fill:var(--text-faint); font-size:9px; letter-spacing:.04em; }
.scene-svg .hud-text.hot{ fill:var(--converge); }
.scene-svg .scanline{ stroke:rgba(63,230,207,0.5); stroke-width:1; animation:scan 5s linear infinite; }

@keyframes draw{ to{ stroke-dashoffset:0; } }
@keyframes pulse-dot{ 0%,100%{ opacity:1; } 50%{ opacity:.35; } }
@keyframes pulse-node{ 0%,100%{ r:4; } 50%{ r:5.6; } }
@keyframes ring-expand{ 0%{ opacity:.6; transform:scale(.4);} 100%{ opacity:0; transform:scale(2.2);} }
@keyframes scan{ 0%{ transform:translateY(-100%);} 100%{ transform:translateY(320px);} }

@media (prefers-reduced-motion: reduce){
  .scene-svg .traj{ animation:none; stroke-dashoffset:0; }
  .scene-svg .node-converge, .scene-svg .ring, .eyebrow::before, .scene-tag .rec{ animation:none; }
}

/* ---------- Cards ---------- */
.grid-6{ display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
@media (max-width:900px){ .grid-6{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:600px){ .grid-6{ grid-template-columns:1fr; } }

.vcard{
  padding:26px 24px; border:1px solid var(--border); border-radius:var(--radius);
  background:linear-gradient(180deg, var(--surface), transparent);
  transition:border-color .2s var(--ease), transform .2s var(--ease);
  display:flex; flex-direction:column; gap:14px; min-height:200px;
}
.vcard:hover{ border-color:var(--border-strong); transform:translateY(-3px); }
.vcard .vc-index{ font-family:var(--font-mono); font-size:11px; color:var(--text-faint); }
.vcard h3{ font-size:1.15rem; }
.vcard p{ color:var(--text-dim); font-size:14.5px; flex:1; }
.vcard .vc-link{ font-size:13.5px; font-weight:600; color:var(--signal); display:inline-flex; align-items:center; gap:6px; }

/* ---------- Two column feature ---------- */
.split{ display:grid; grid-template-columns:1fr 1fr; gap:60px; align-items:center; }
@media (max-width:900px){ .split{ grid-template-columns:1fr; gap:36px; } }
.split.reverse .split-media{ order:2; }
@media (max-width:900px){ .split.reverse .split-media{ order:0; } }

/* ---------- Word grid (voice of customer) ---------- */
.word-row{ display:flex; flex-wrap:wrap; gap:10px; }
.word-chip{
  font-family:var(--font-mono); font-size:12.5px; padding:8px 13px;
  border:1px solid var(--border-strong); border-radius:99px; color:var(--text-dim);
}

/* ---------- Panels ---------- */
.panel{ border:1px solid var(--border); border-radius:var(--radius-lg); padding:34px; background:var(--surface); }
.panel-strict{ border-color:rgba(255,156,74,0.25); background:linear-gradient(180deg, rgba(255,156,74,0.05), transparent); }

/* ---------- CTA band ---------- */
.cta-band{
  border:1px solid var(--border-strong); border-radius:24px;
  padding:64px 48px; text-align:center;
  background:radial-gradient(ellipse 60% 100% at 50% 0%, rgba(63,230,207,0.08), transparent 70%), var(--surface);
}
@media (max-width:600px){ .cta-band{ padding:44px 22px; } }

/* ---------- Footer ---------- */
footer{ border-top:1px solid var(--border); padding:52px 0 40px; }
.footer-row{ display:flex; justify-content:space-between; align-items:flex-start; gap:24px; flex-wrap:wrap; }
.footer-links{ display:flex; gap:26px; flex-wrap:wrap; }
.footer-links a{ font-size:13.5px; color:var(--text-dim); }
.footer-links a:hover{ color:var(--text); }
.footer-bottom{ margin-top:36px; padding-top:22px; border-top:1px solid var(--border); font-size:12.5px; color:var(--text-faint); display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px; }

/* ---------- Scroll reveal ---------- */
.reveal{ opacity:0; transform:translateY(18px); transition:opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in{ opacity:1; transform:translateY(0); }

/* ---------- Utility ---------- */
.stack{ display:flex; flex-direction:column; gap:16px; }
.center{ text-align:center; }
.mx-auto{ margin-left:auto; margin-right:auto; }
.mt-8{ margin-top:8px;} .mt-16{ margin-top:16px;} .mt-24{ margin-top:24px;} .mt-40{ margin-top:40px;} .mt-56{ margin-top:56px;}
.only-mobile{ display:none; }
@media (max-width:900px){ .only-mobile{ display:block; } }
.badge{
  display:inline-flex; align-items:center; gap:8px;
  font-family:var(--font-mono); font-size:11.5px; letter-spacing:.05em; text-transform:uppercase;
  padding:6px 12px; border:1px solid var(--border-strong); border-radius:99px; color:var(--text-dim);
}