/* ============================================================
   ParallelOS — Shared Design System
   Brand DNA: pure-black canvas, azure→cyan neon energy,
   isometric GPU-node cubes, enterprise-clean precision.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=IBM+Plex+Sans:wght@400;500;600&family=JetBrains+Mono:wght@400;500;600;700&display=swap');

:root{
  /* surfaces */
  --bg:        #03060b;
  --bg-2:      #060a12;
  --surface:   #0b111c;
  --surface-2: #101a28;
  --surface-3: #16223a;
  --border:    rgba(120,165,215,0.13);
  --border-2:  rgba(120,165,215,0.22);

  /* brand */
  --brand:     #00a0f0;   /* primary azure */
  --brand-2:   #0066cc;   /* deep blue */
  --cyan:      #00e5ff;   /* hot energy glow */
  --cyan-hot:  #6bf3ff;
  --grad: linear-gradient(120deg,#00e5ff 0%,#00a0f0 48%,#0066cc 100%);
  --grad-soft: linear-gradient(120deg,rgba(0,229,255,.16),rgba(0,160,240,.10));

  /* text */
  --text:      #eaf1fa;
  --text-dim:  #93a3b8;
  --text-faint:#5c6b80;

  /* type */
  --f-display: 'Space Grotesk', system-ui, sans-serif;
  --f-body:    'IBM Plex Sans', system-ui, sans-serif;
  --f-mono:    'JetBrains Mono', ui-monospace, monospace;

  /* glow */
  --glow-cyan: 0 0 24px rgba(0,229,255,.45);
  --glow-blue: 0 0 40px rgba(0,160,240,.35);

  --maxw: 1240px;
  --nav-h: 72px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--f-body);
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
::selection{background:rgba(0,229,255,.28);color:#fff}

/* scrollbar */
::-webkit-scrollbar{width:11px;height:11px}
::-webkit-scrollbar-track{background:var(--bg-2)}
::-webkit-scrollbar-thumb{background:#1a2638;border-radius:8px;border:2px solid var(--bg-2)}
::-webkit-scrollbar-thumb:hover{background:#243450}

/* ---------- layout ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 32px}
.section{position:relative;padding:120px 0}
.section-sm{padding:80px 0}
@media(max-width:760px){.section{padding:84px 0}.wrap{padding:0 20px}}

/* ---------- type ---------- */
h1,h2,h3,h4{font-family:var(--f-display);font-weight:600;line-height:1.05;letter-spacing:-.02em;color:#fff}
.h-display{font-size:clamp(40px,7vw,82px);font-weight:700;letter-spacing:-.035em}
h2.h-section{font-size:clamp(30px,4.4vw,52px);font-weight:600}
h3{font-size:clamp(20px,2.4vw,27px)}
.mono{font-family:var(--f-mono)}
.text-grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.dim{color:var(--text-dim)}
.lead{font-size:clamp(17px,1.5vw,20px);color:var(--text-dim);line-height:1.65}

/* eyebrow / kicker */
.kicker{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--f-mono);font-size:12px;font-weight:600;
  letter-spacing:.22em;text-transform:uppercase;
  color:var(--cyan);
}
.kicker::before{content:"";width:22px;height:1px;background:var(--cyan);box-shadow:var(--glow-cyan)}
.kicker.center::after{content:"";width:22px;height:1px;background:var(--cyan);box-shadow:var(--glow-cyan)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  font-family:var(--f-body);font-weight:600;font-size:15px;
  padding:13px 24px;border-radius:10px;cursor:pointer;border:1px solid transparent;
  transition:transform .25s cubic-bezier(.2,.8,.2,1),box-shadow .25s,background .25s,border-color .25s;
  white-space:nowrap;position:relative;
}
.btn svg{width:17px;height:17px}
.btn-primary{background:var(--grad);color:#021018;box-shadow:0 6px 26px rgba(0,160,240,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 40px rgba(0,200,255,.5)}
.btn-ghost{background:rgba(255,255,255,.03);color:var(--text);border-color:var(--border-2)}
.btn-ghost:hover{border-color:var(--cyan);color:#fff;background:rgba(0,229,255,.06);box-shadow:0 0 0 1px rgba(0,229,255,.25)}
.btn-lg{padding:16px 30px;font-size:16px;border-radius:12px}
.btn-sm{padding:9px 16px;font-size:13px;border-radius:8px}

/* ---------- chips / pills ---------- */
.pill{display:inline-flex;align-items:center;gap:8px;padding:6px 13px;border-radius:100px;
  border:1px solid var(--border);background:rgba(255,255,255,.02);
  font-family:var(--f-mono);font-size:12.5px;color:var(--text-dim)}
.pill .dot{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:var(--glow-cyan);animation:pulse 2.4s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}

/* ---------- cards ---------- */
.card{
  position:relative;background:linear-gradient(180deg,var(--surface),var(--bg-2));
  border:1px solid var(--border);border-radius:16px;padding:30px;
  transition:transform .35s cubic-bezier(.2,.8,.2,1),border-color .35s,box-shadow .35s;
  overflow:hidden;
}
.card:hover{transform:translateY(-4px);border-color:var(--border-2)}
.card-glow:hover{border-color:rgba(0,229,255,.35);box-shadow:0 20px 60px -20px rgba(0,160,240,.4)}
.card-glow::after{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:radial-gradient(380px circle at var(--mx,50%) var(--my,0%),rgba(0,229,255,.10),transparent 60%);
  opacity:0;transition:opacity .4s}
.card-glow:hover::after{opacity:1}

/* hairline grid frames */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
@media(max-width:900px){.grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.grid-3,.grid-2,.grid-4{grid-template-columns:1fr}}

/* ---------- nav (floating pill) ---------- */
.nav{position:fixed;top:16px;left:0;right:0;z-index:1000;display:flex;justify-content:center;
  height:auto;pointer-events:none;transition:top .4s}
.nav .wrap{position:relative;pointer-events:auto;display:flex;align-items:center;justify-content:space-between;gap:22px;
  width:min(1200px,calc(100% - 32px));padding:10px 10px 10px 20px;border-radius:100px;
  border:1px solid var(--border);background:rgba(8,12,20,.55);
  -webkit-backdrop-filter:blur(20px) saturate(150%);backdrop-filter:blur(20px) saturate(150%);
  box-shadow:0 10px 40px -16px rgba(0,0,0,.7);transition:background .4s,border-color .4s,box-shadow .4s,padding .4s}
.nav.scrolled{top:8px}
.nav.scrolled .wrap{background:rgba(8,12,20,.82);border-color:var(--border-2);box-shadow:0 14px 50px -16px rgba(0,160,240,.28)}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--f-display);font-weight:700;font-size:18px;letter-spacing:-.02em;flex:0 0 auto}
.brand .mark{width:28px;height:28px;object-fit:contain;filter:drop-shadow(0 0 8px rgba(0,200,255,.5))}
.brand b{color:#fff}.brand span{color:var(--brand)}
.nav-links{position:absolute;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:6px}
.nav-links a{font-size:14px;color:var(--text-dim);font-weight:500;transition:color .2s,background .2s;position:relative;padding:8px 14px;border-radius:100px}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.05)}
.nav-links a.active{color:#fff;background:rgba(0,229,255,.1)}
.nav-cta{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-ic{display:grid;place-items:center;width:36px;height:36px;border-radius:100px;border:1px solid var(--border-2);color:var(--text-dim);transition:color .2s,border-color .2s,background .2s;flex:0 0 auto}
.nav-ic svg{width:16px;height:16px}
.nav-ic:hover{color:#fff;border-color:var(--cyan);background:rgba(0,229,255,.07)}
.nav-burger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px;border-radius:10px}
.nav-burger span{width:20px;height:2px;background:var(--text);transition:.3s;border-radius:2px}
@media(max-width:980px){
  .nav-links{position:absolute;left:0;right:0;top:calc(100% + 10px);transform:none;flex-direction:column;gap:4px;
    background:rgba(8,12,20,.96);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);padding:12px;
    border:1px solid var(--border);border-radius:18px;align-items:stretch;
    opacity:0;visibility:hidden;translate:0 -8px;transition:opacity .3s,visibility .3s,translate .3s;
    box-shadow:0 20px 50px -16px rgba(0,0,0,.7)}
  .nav-links.open{opacity:1;visibility:visible;translate:0 0}
  .nav-links a{padding:13px 16px;font-size:15px;text-align:left}
  .nav-burger{display:flex}
  .nav-cta .btn-ghost{display:none}
}

/* ---------- footer ---------- */
.footer{border-top:1px solid var(--border);background:var(--bg-2);padding:64px 0 34px;position:relative;z-index:2}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;margin-bottom:48px}
.footer h5{font-family:var(--f-mono);font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--text-faint);margin-bottom:18px}
.footer ul{list-style:none}.footer li{margin-bottom:11px}
.footer li a{color:var(--text-dim);font-size:14.5px;transition:color .2s}
.footer li a:hover{color:var(--cyan)}
.footer-bot{display:flex;justify-content:space-between;align-items:center;padding-top:26px;border-top:1px solid var(--border);color:var(--text-faint);font-size:13px;font-family:var(--f-mono);flex-wrap:wrap;gap:14px}
@media(max-width:760px){.footer-grid{grid-template-columns:1fr 1fr;gap:30px}}

/* ---------- reveal animation (JS rAF-driven) ---------- */
[data-reveal]{opacity:0;transform:translateY(34px);will-change:opacity,transform}
[data-reveal].in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){[data-reveal]{opacity:1;transform:none}}

/* ---------- decorative ---------- */
.bg-grid{position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(120,165,215,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(120,165,215,.045) 1px,transparent 1px);
  background-size:60px 60px;mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000 30%,transparent 75%)}
.glow-orb{position:absolute;border-radius:50%;filter:blur(90px);pointer-events:none;opacity:.5;z-index:0}
.divider-glow{height:1px;background:linear-gradient(90deg,transparent,var(--cyan),transparent);opacity:.5}

/* stat number */
.stat-num{font-family:var(--f-display);font-weight:700;font-size:clamp(34px,4vw,52px);letter-spacing:-.03em;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1}
.stat-label{font-family:var(--f-mono);font-size:12.5px;color:var(--text-dim);letter-spacing:.05em;margin-top:8px}

/* code block */
.code{font-family:var(--f-mono);font-size:13.5px;background:var(--bg-2);border:1px solid var(--border);border-radius:12px;
  padding:20px 22px;color:#b9c6d8;overflow-x:auto;line-height:1.75;position:relative}
.code .k{color:var(--cyan)}.code .s{color:#9bd0a0}.code .c{color:var(--text-faint)}.code .n{color:#f0b86b}

/* badge */
.badge{display:inline-flex;align-items:center;gap:7px;font-family:var(--f-mono);font-size:11.5px;font-weight:600;
  padding:4px 10px;border-radius:6px;letter-spacing:.04em}
.badge-cyan{background:rgba(0,229,255,.1);color:var(--cyan);border:1px solid rgba(0,229,255,.25)}
.badge-green{background:rgba(52,211,153,.1);color:#34d399;border:1px solid rgba(52,211,153,.25)}
.badge-amber{background:rgba(245,180,80,.1);color:#f5b450;border:1px solid rgba(245,180,80,.25)}
.badge-purple{background:rgba(167,139,250,.1);color:#a78bfa;border:1px solid rgba(167,139,250,.25)}

/* tooltip-ish marquee track */
.flow-line{position:relative;overflow:hidden}