/* StratoNetwork — design system */
:root {
  --bg: #07060d;
  --bg-2: #0d0a1a;
  --surface: #110d20;
  --surface-2: #181230;
  --border: rgba(139, 124, 255, 0.14);
  --border-strong: rgba(139, 124, 255, 0.28);
  --text: #ECE9FF;
  --text-dim: #9b96b8;
  --text-mute: #6b6585;

  --accent: #7c5cff;
  --accent-2: #4f7dff;
  --accent-3: #b794ff;
  --grad: linear-gradient(135deg, #b794ff 0%, #7c5cff 40%, #4f7dff 100%);
  --grad-soft: linear-gradient(135deg, rgba(183,148,255,0.18), rgba(79,125,255,0.18));

  --radius: 18px;
  --radius-lg: 28px;
  --radius-sm: 10px;

  --pad-x: 7vw;
  --gap: 24px;

  --shadow-glow: 0 0 80px -20px rgba(124, 92, 255, 0.55);
  --shadow-card: 0 1px 0 rgba(255,255,255,0.04) inset, 0 30px 60px -30px rgba(0,0,0,0.6);

  --font: "Inter", "Söhne", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --font-display: "Söhne", "Inter", system-ui, sans-serif;

  --anim-mult: 1;
  --density: 1;
}

[data-theme="light"] {
  --bg: #f6f5fb;
  --bg-2: #ecebf5;
  --surface: #ffffff;
  --surface-2: #f4f2fb;
  --border: rgba(124, 92, 255, 0.18);
  --border-strong: rgba(124, 92, 255, 0.32);
  --text: #15102b;
  --text-dim: #4b4570;
  --text-mute: #7a7595;
  --shadow-card: 0 1px 0 rgba(255,255,255,1) inset, 0 30px 60px -30px rgba(60,40,140,0.18);
  --shadow-glow: 0 0 100px -20px rgba(124, 92, 255, 0.35);
}

[data-density="compact"] { --pad-x: 5vw; --gap: 16px; --density: 0.85; }
[data-density="airy"] { --pad-x: 9vw; --gap: 32px; --density: 1.15; }

* { box-sizing: border-box; }
html, body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}
body {
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(124,92,255,0.25), transparent 60%),
    radial-gradient(900px 500px at -10% 30%, rgba(79,125,255,0.18), transparent 60%),
    var(--bg);
}
[data-theme="light"] body {
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(124,92,255,0.18), transparent 60%),
    radial-gradient(900px 500px at -10% 30%, rgba(79,125,255,0.12), transparent 60%),
    var(--bg);
}

/* Grain overlay */
.grain {
  position: fixed; inset: 0;
  pointer-events: none !important;
  z-index: 0;
  opacity: 0.06;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="200" height="200"><filter id="n"><feTurbulence type="fractalNoise" baseFrequency="0.85" numOctaves="2" stitchTiles="stitch"/><feColorMatrix values="0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0.5 0"/></filter><rect width="200" height="200" filter="url(%23n)"/></svg>");
}

/* Cursor halo */
.cursor-halo { pointer-events: none !important;
  position: fixed;
  width: 480px; height: 480px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(124,92,255,0.18), transparent 60%);
  filter: blur(40px);
  pointer-events: none;
  transform: translate(-50%, -50%);
  z-index: 1;
  transition: opacity 0.4s;
  mix-blend-mode: screen;
}
[data-theme="light"] .cursor-halo { pointer-events: none !important;
  background: radial-gradient(circle, rgba(124,92,255,0.22), transparent 60%);
  mix-blend-mode: multiply;
}

/* Typography */
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 600; letter-spacing: -0.025em; line-height: 1.02; margin: 0; text-wrap: balance; }
h1 { font-size: clamp(48px, 7vw, 104px); font-weight: 600; letter-spacing: -0.035em; }
h2 { font-size: clamp(36px, 4.6vw, 68px); }
h3 { font-size: clamp(22px, 2vw, 30px); letter-spacing: -0.02em; }
p { line-height: 1.55; color: var(--text-dim); margin: 0; text-wrap: pretty; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 12px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--text-dim);
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255,255,255,0.02);
  backdrop-filter: blur(8px);
}
.eyebrow .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse { 0%,100% { opacity:1; transform:scale(1);} 50% {opacity:0.6; transform:scale(1.3);} }

.gradient-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* Layout */
.shell { padding: 0 var(--pad-x); max-width: 1600px; margin: 0 auto; }
section { padding: calc(120px * var(--density)) 0; position: relative; }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 200;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px var(--pad-x);
  backdrop-filter: blur(20px) saturate(140%);
  background: linear-gradient(180deg, rgba(7,6,13,0.85), rgba(7,6,13,0.5));
  border-bottom: 1px solid var(--border);
}
[data-theme="light"] .nav {
  background: linear-gradient(180deg, rgba(246,245,251,0.9), rgba(246,245,251,0.6));
}
.nav .brand { display: flex; align-items: center; gap: 12px; cursor: pointer; }
.nav .brand img { width: 36px; height: 36px; }
.nav .brand-name { font-weight: 700; letter-spacing: 0.02em; font-size: 15px; }
.nav .brand-name span { color: var(--accent-3); font-weight: 500; }
.nav-links { display: flex; gap: 4px; align-items: center; background: rgba(255,255,255,0.025); border: 1px solid var(--border); padding: 5px; border-radius: 999px; }
[data-theme="light"] .nav-links { background: rgba(255,255,255,0.6); }
.nav-links a { cursor: pointer;
  color: var(--text-dim); text-decoration: none; font-size: 14px;
  padding: 8px 16px; border-radius: 999px;
  transition: color 0.2s, background 0.2s;
  cursor: pointer;
  font-weight: 500;
}
.nav-links a:hover { color: var(--text); }
.nav-links a.active { color: var(--text); background: var(--surface-2); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 22px; border-radius: 999px;
  font-weight: 600; font-size: 14px;
  text-decoration: none; cursor: pointer;
  border: 0;
  transition: transform 0.2s, box-shadow 0.3s;
  font-family: var(--font);
  white-space: nowrap;
}
.btn-primary {
  background: var(--grad);
  color: white;
  box-shadow: 0 10px 30px -10px rgba(124,92,255,0.6), inset 0 1px 0 rgba(255,255,255,0.25);
  position: relative;
  overflow: hidden;
}
.btn-primary::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,0.4), transparent 70%);
  transform: translateX(-100%);
  transition: transform 0.7s;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 20px 40px -10px rgba(124,92,255,0.7); }
.btn-primary:hover::after { transform: translateX(100%); }
.btn-ghost {
  background: rgba(255,255,255,0.04);
  color: var(--text);
  border: 1px solid var(--border-strong);
}
[data-theme="light"] .btn-ghost { background: rgba(255,255,255,0.6); }
.btn-ghost:hover { background: rgba(255,255,255,0.08); transform: translateY(-2px); }
.btn .arr { transition: transform 0.3s; }
.btn:hover .arr { transform: translateX(4px); }

/* Cards */
.card {
  background: linear-gradient(180deg, var(--surface), var(--surface-2));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.card.glow::before {
  content: ""; position: absolute; inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: var(--grad);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: 0.5;
}

/* Reveal animation */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.9s cubic-bezier(0.2, 0.8, 0.2, 1), transform 0.9s cubic-bezier(0.2, 0.8, 0.2, 1); transition-delay: var(--delay, 0ms); }
.reveal.in { opacity: 1; transform: none; }

/* Marquee */
@keyframes marquee { from { transform: translateX(0);} to { transform: translateX(-50%);} }
.marquee {
  display: flex; gap: 60px; white-space: nowrap;
  animation: marquee calc(40s / var(--anim-mult)) linear infinite;
  width: max-content;
}

/* Glow chip */
.chip {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; padding: 8px 14px;
  border: 1px solid var(--border); border-radius: 999px;
  color: var(--text-dim);
  background: rgba(255,255,255,0.02);
  font-weight: 500;
}
[data-theme="light"] .chip { background: rgba(255,255,255,0.5); }

/* Section heading */
.section-head { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 18px; margin-bottom: 64px; }
.section-head h2 { max-width: 18ch; }
.section-head p { max-width: 60ch; font-size: 18px; }

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 80px var(--pad-x) 40px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 48px;
}
.footer h5 { font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-mute); margin: 0 0 18px; font-weight: 600; }
.footer ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 12px; }
.footer a { color: var(--text-dim); text-decoration: none; font-size: 14px; }
.footer a:hover { color: var(--text); }
.footer-bottom { grid-column: 1 / -1; padding-top: 32px; border-top: 1px solid var(--border); display: flex; justify-content: space-between; color: var(--text-mute); font-size: 13px; flex-wrap: wrap; gap: 12px; }

/* Page transitions */
.page { display: none; animation: pageIn calc(0.3s / var(--anim-mult)) cubic-bezier(0.2, 0.8, 0.2, 1); }
.page.active { display: block; }
@keyframes pageIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: none; }
}

/* Responsive */


.mob-burger{display:none!important;background:none;border:1px solid var(--border);border-radius:10px;min-width:44px;min-height:44px;width:44px;height:44px;align-items:center;justify-content:center;cursor:pointer;color:var(--text);flex-shrink:0;padding:0;}
.mob-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.65);backdrop-filter:blur(4px);z-index:9998;opacity:0;transition:opacity .3s;}
.mob-overlay.on{opacity:1;pointer-events:all;}
.mob-drawer{position:fixed;top:0;right:0;width:min(300px,82vw);height:100dvh;background:var(--surface);border-left:1px solid var(--border);z-index:9999;display:flex;flex-direction:column;padding:20px;transform:translateX(110%);transition:transform .32s cubic-bezier(.2,.8,.2,1);}
.mob-drawer.on{transform:translateX(0);box-shadow:-8px 0 40px rgba(0,0,0,.5);}
.mob-drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px;}
.mob-logo{display:flex;align-items:center;gap:10px;font-size:14px;font-weight:700;color:var(--text);letter-spacing:.04em;cursor:pointer;}
.mob-logo img{width:32px;height:32px;border-radius:50%;}
.mob-logo span{color:var(--accent-3);font-weight:500;}
.mob-close{background:rgba(255,255,255,.06);border:1px solid var(--border);border-radius:8px;width:34px;height:34px;display:grid;place-items:center;cursor:pointer;color:var(--text);font-size:16px;}
.mob-nav{display:flex;flex-direction:column;gap:4px;flex:1;}
.mob-nav a{display:flex;align-items:center;justify-content:space-between;padding:13px 14px;border-radius:10px;color:var(--text-dim);text-decoration:none;font-size:15px;font-weight:500;border:1px solid transparent;transition:all .15s;cursor:pointer;}
.mob-nav a:hover,.mob-nav a.active{background:rgba(124,92,255,.1);border-color:rgba(124,92,255,.25);color:var(--text);}
.mob-cta{margin-top:20px;padding-top:20px;border-top:1px solid var(--border);}
.mob-cta .btn{width:100%;justify-content:center;display:flex;}
.mob-contact{font-size:12px;color:var(--text-mute);margin-top:10px;text-align:center;}

@media(max-width:900px){
  .mob-burger{display:flex!important;}
  .mob-overlay{display:block;pointer-events:none;}
  .mob-overlay.on{pointer-events:all;}
  .nav-links{display:none!important;}
  .nav>a.btn{display:none!important;}
  .shell{padding-inline:16px!important;}
  .hero-title{font-size:clamp(28px,8vw,44px)!important;}
  .hero-sub{font-size:15px!important;}
  .hero-demo-wrap{display:none!important;}
  .hero-trust{flex-direction:column;gap:6px;align-items:center;}
  .hero-ctas{flex-direction:column;align-items:stretch;}
  .hero-ctas .btn{justify-content:center;}
  .section-head h2,.page-hero h1{font-size:clamp(24px,7vw,38px)!important;}
  .svc-grid,.svc-grid-lg,.sectors-grid,.cases-grid,.vs-grid,.contact-grid{grid-template-columns:1fr!important;}
  .compare-grid,.mon-grid,.stack-grid{grid-template-columns:1fr 1fr!important;}
  .contact-form{grid-template-columns:1fr!important;}
  .steps{padding-left:0!important;}
  .steps-line{display:none!important;}
  .step-row{flex-direction:column!important;gap:12px!important;padding-left:0!important;margin-left:0!important;}
  .step-num{position:static!important;margin-bottom:4px!important;}
  .calc{flex-direction:column!important;}
  .calc-right{width:100%!important;}
  .cta-strip{flex-direction:column!important;text-align:center;}
  .cta-orb-wrap{display:none!important;}
  .cta-strip .row{justify-content:center;}
  .footer{grid-template-columns:1fr!important;gap:28px!important;}
  .footer-bottom{flex-direction:column;gap:6px;}
  .marquee-wrap{display:none!important;}
}


/* Utility */
.row { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; }
.stack { display: flex; flex-direction: column; gap: 16px; }
.divider { height: 1px; background: var(--border); border: 0; margin: 0; }
.center { text-align: center; }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}