/* ==========================================================================
   Hillview Culture — Shared Stylesheet
   Dark, tech-first design system for the corporate site.
   ========================================================================== */

:root{
  --bg:#05070f;
  --bg-2:#0a0f1e;
  --panel:rgba(255,255,255,.04);
  --panel-2:rgba(255,255,255,.06);
  --border:rgba(148,163,184,.14);
  --border-strong:rgba(148,163,184,.28);
  --text:#e8edf7;
  --muted:#94a3b8;
  --dim:#64748b;
  --cyan:#22d3ee;
  --blue:#3b82f6;
  --violet:#8b5cf6;
  --green:#34d399;
  --amber:#fbbf24;
  --pink:#f472b6;
  --grad:linear-gradient(90deg,#22d3ee 0%,#3b82f6 55%,#8b5cf6 100%);
  --grad-soft:linear-gradient(135deg,rgba(34,211,238,.18),rgba(59,130,246,.12),rgba(139,92,246,.18));
  --mono:'IBM Plex Mono',ui-monospace,monospace;
  --sans:'Inter',system-ui,-apple-system,sans-serif;
  --display:'Space Grotesk',var(--sans);
  --radius:14px;
  --radius-lg:18px;
  --shadow:0 30px 80px rgba(0,0,0,.5),0 0 60px rgba(59,130,246,.08);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--bg);color:var(--text);font-family:var(--sans);
  font-size:16px;line-height:1.7;overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
::selection{background:rgba(34,211,238,.3);color:#04121a}
a{color:inherit;text-decoration:none;transition:color .2s}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}

/* Background FX ---------------------------------------------------------- */
#bg-canvas{position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.55}
.grid-overlay{position:absolute;inset:0;z-index:0;pointer-events:none;
  background-image:linear-gradient(rgba(148,163,184,.045) 1px,transparent 1px),
  linear-gradient(90deg,rgba(148,163,184,.045) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(ellipse 90% 70% at 50% 0%,#000 30%,transparent 75%);
  -webkit-mask-image:radial-gradient(ellipse 90% 70% at 50% 0%,#000 30%,transparent 75%);
}
.glow{position:absolute;border-radius:50%;filter:blur(120px);z-index:0;pointer-events:none}
.relative{position:relative;z-index:1}
.container{max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1}
section{position:relative}

/* Nav ------------------------------------------------------------------- */
nav{position:fixed;top:0;left:0;right:0;z-index:100;transition:all .35s ease}
nav.scrolled{background:rgba(5,7,15,.85);backdrop-filter:blur(18px);border-bottom:1px solid var(--border)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:10px;font-family:var(--display);font-weight:700;letter-spacing:.5px}
.logo-img{height:42px;width:auto;display:block;filter:drop-shadow(0 0 16px rgba(34,211,238,.15))}
.logo small{display:block;font-family:var(--mono);font-size:10px;font-weight:400;color:var(--muted);letter-spacing:2px}
.nav-links{display:flex;gap:6px;font-size:14px}
.nav-links a{padding:9px 14px;border-radius:8px;color:var(--muted);transition:all .2s}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.04)}
.nav-links a.active{color:var(--cyan);background:rgba(34,211,238,.08)}
.nav-cta{display:flex;align-items:center;gap:10px}

.btn{display:inline-flex;align-items:center;gap:8px;font-family:var(--display);font-weight:600;font-size:14px;padding:11px 22px;border-radius:10px;transition:all .25s ease;cursor:pointer;border:1px solid transparent;white-space:nowrap}
.btn-primary{background:var(--grad);color:#04121a;box-shadow:0 4px 24px rgba(59,130,246,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 36px rgba(59,130,246,.5)}
.btn-ghost{border-color:var(--border);color:var(--text);background:rgba(255,255,255,.03)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan);background:rgba(34,211,238,.06)}
.btn-sm{padding:9px 16px;font-size:13px}

.burger{display:none;background:none;border:1px solid var(--border);border-radius:8px;padding:8px 12px;cursor:pointer;color:var(--text);font-size:18px}
.mobile-menu{display:none;position:fixed;inset:0;z-index:99;background:rgba(5,7,15,.97);backdrop-filter:blur(20px);padding:100px 28px 40px;flex-direction:column;gap:6px}
.mobile-menu a{font-family:var(--display);font-size:24px;padding:14px 0;border-bottom:1px solid var(--border);color:var(--muted)}
.mobile-menu a:hover,.mobile-menu a.active{color:var(--cyan)}
.mobile-menu .btn{margin-top:24px;justify-content:center}

/* Hero ------------------------------------------------------------------ */
.hero{padding:160px 0 100px;min-height:90vh;display:flex;align-items:center}
.hero h1{font-family:var(--display);font-size:clamp(40px,5.4vw,72px);line-height:1.05;font-weight:700;letter-spacing:-1.8px;margin-bottom:24px}
.hero h1 .grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.sub{font-size:18px;color:var(--muted);max-width:600px;margin-bottom:36px}
.hero-ctas{display:flex;gap:14px;flex-wrap:wrap}
.page-hero{padding:170px 0 80px;border-bottom:1px solid var(--border);min-height:auto}
.page-hero h1{font-family:var(--display);font-size:clamp(34px,4.6vw,58px);line-height:1.1;font-weight:700;letter-spacing:-1.4px;margin-bottom:18px}
.page-hero h1 .grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.page-hero p{font-size:18px;color:var(--muted);max-width:680px}

.eyebrow{display:inline-flex;align-items:center;gap:10px;font-family:var(--mono);font-size:12px;letter-spacing:2.5px;color:var(--cyan);border:1px solid rgba(34,211,238,.28);background:rgba(34,211,238,.07);padding:7px 16px;border-radius:100px;margin-bottom:24px}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--cyan);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1;box-shadow:0 0 0 0 rgba(34,211,238,.5)}50%{opacity:.6;box-shadow:0 0 0 6px rgba(34,211,238,0)}}

/* Section common -------------------------------------------------------- */
.sec{padding:110px 0}
.sec-head{max-width:760px;margin-bottom:60px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-tag{font-family:var(--mono);font-size:12px;letter-spacing:3px;color:var(--cyan);text-transform:uppercase;display:inline-flex;align-items:center;gap:12px;margin-bottom:18px}
.sec-tag::before{content:'';width:34px;height:1px;background:var(--cyan);opacity:.6}
.sec-head h2{font-family:var(--display);font-size:clamp(30px,3.6vw,46px);font-weight:700;letter-spacing:-1px;line-height:1.15;margin-bottom:18px}
.sec-head p{color:var(--muted);font-size:17px}

/* Stats ----------------------------------------------------------------- */
.stats{background:var(--bg-2);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:54px 0}
.stat{text-align:center}
.stat .num{font-family:var(--display);font-size:clamp(34px,4vw,48px);font-weight:700;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1}
.stat .lbl{font-family:var(--mono);font-size:12px;letter-spacing:2px;color:var(--muted);text-transform:uppercase;margin-top:10px}

/* Cards ----------------------------------------------------------------- */
.card{position:relative;border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--panel);padding:30px 28px;transition:all .3s ease;overflow:hidden}
.card:hover{border-color:rgba(34,211,238,.4);transform:translateY(-4px);background:var(--panel-2)}

/* Footer ---------------------------------------------------------------- */
footer{border-top:1px solid var(--border);background:var(--bg-2);padding:64px 0 30px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:48px;margin-bottom:50px}
.footer-brand p{color:var(--muted);font-size:14px;max-width:360px;margin-top:16px}
.footer-col h5{font-family:var(--mono);font-size:12px;color:var(--text);letter-spacing:2px;text-transform:uppercase;margin-bottom:18px}
.footer-col a,.footer-col p{display:block;color:var(--muted);font-size:14px;padding:5px 0;transition:color .2s}
.footer-col a:hover{color:var(--cyan)}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;border-top:1px solid var(--border);padding-top:26px;font-family:var(--mono);font-size:12px;color:var(--muted)}

/* Reveal animation ------------------------------------------------------ */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.reveal.visible{opacity:1;transform:translateY(0)}
.reveal[data-delay="1"]{transition-delay:.1s}
.reveal[data-delay="2"]{transition-delay:.2s}
.reveal[data-delay="3"]{transition-delay:.3s}
.reveal[data-delay="4"]{transition-delay:.4s}
.reveal[data-delay="5"]{transition-delay:.5s}
.reveal[data-delay="6"]{transition-delay:.6s}

/* Responsive ------------------------------------------------------------ */
@media(max-width:1024px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media(max-width:820px){
  .nav-links,.nav-cta .btn-ghost{display:none}
  .burger{display:block}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:36px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
}