/* ============================================================
   AQRAMIX — Infrastructure services
   Design language: engineered, gridded, rack-and-cabling
   ============================================================ */

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

:root{
  /* Palette — graphite enclosure, signal teal, copper trace */
  --ink:        #0E1417;   /* near-black graphite */
  --ink-2:      #18222A;   /* raised surface */
  --ink-3:      #22303B;   /* hairline / divider on dark */
  --paper:      #F4F6F5;   /* off-white */
  --paper-2:    #E8ECEB;   /* light surface */
  --line:       #D5DBDA;   /* light divider */
  --signal:     #15B79E;   /* signal teal */
  --signal-d:   #0C7A6A;   /* deep teal */
  --copper:     #C8743C;   /* copper trace accent */
  --txt:        #14201F;   /* body on light */
  --txt-2:      #56625F;   /* muted on light */
  --txt-inv:    #E5EAE9;   /* body on dark */
  --txt-inv-2:  #8B9A98;   /* muted on dark */

  --maxw: 1240px;
  --gut: clamp(20px, 5vw, 64px);

  --f-display: 'Space Grotesk', sans-serif;
  --f-body: 'Inter', sans-serif;
  --f-mono: 'JetBrains Mono', monospace;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--f-body);
  color:var(--txt);
  background:var(--paper);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}

/* ---------- type ---------- */
h1,h2,h3,h4{font-family:var(--f-display);font-weight:600;line-height:1.08;letter-spacing:-0.02em}
h1{font-size:clamp(2.4rem,6vw,4.6rem)}
h2{font-size:clamp(1.9rem,4vw,3.1rem)}
h3{font-size:clamp(1.2rem,2vw,1.55rem)}
p{font-size:1.02rem}
.lead{font-size:clamp(1.05rem,1.6vw,1.3rem);line-height:1.55;color:var(--txt-2)}

.eyebrow{
  font-family:var(--f-mono);
  font-size:.74rem;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--signal-d);
  display:inline-flex;
  align-items:center;
  gap:.6em;
}
.eyebrow::before{
  content:"";width:26px;height:1px;background:var(--copper);display:inline-block;
}

/* ---------- layout ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding-inline:var(--gut)}
section{padding-block:clamp(64px,9vw,128px)}
.dark{background:var(--ink);color:var(--txt-inv)}
.dark h1,.dark h2,.dark h3{color:#fff}
.dark .lead{color:var(--txt-inv-2)}

/* ---------- topbar ---------- */
.topbar{background:var(--ink);color:var(--txt-inv-2)}
.topbar-inner{
  max-width:var(--maxw);margin:0 auto;padding:9px var(--gut);
  display:flex;align-items:center;justify-content:flex-end;gap:24px;flex-wrap:wrap;
}
.topbar a{
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--f-mono);font-size:.76rem;letter-spacing:.02em;
  color:var(--txt-inv-2);transition:color .2s;
}
.topbar a:hover{color:var(--signal)}
.topbar svg{width:13px;height:13px;flex:none}

/* ---------- nav ---------- */
.nav{
  position:sticky;top:0;z-index:100;
  background:rgba(244,246,245,.82);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  max-width:var(--maxw);margin:0 auto;
  padding:0 var(--gut);
  height:70px;
  display:flex;align-items:center;justify-content:space-between;
}
.brand{display:flex;align-items:center;gap:11px;font-family:var(--f-display);font-weight:700;font-size:1.18rem;letter-spacing:-0.02em}
.brand-logo{height:52px;width:auto;display:block}
.brand-icon{width:30px;height:30px;flex:none;object-fit:contain}
.brand b{color:var(--signal-d)}
.nav-links{display:flex;align-items:center;gap:34px}
.nav-links a{font-size:.92rem;font-weight:500;color:var(--txt-2);transition:color .2s;position:relative}
.nav-links a:hover,.nav-links a.active{color:var(--txt)}
.nav-links a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-26px;height:2px;background:var(--signal);
}
.nav-cta{
  font-family:var(--f-mono);font-size:.78rem;letter-spacing:.05em;
  background:var(--ink);color:#fff;
  padding:11px 18px;border-radius:2px;
  transition:background .2s,transform .2s;
}
.nav-cta:hover{background:var(--signal-d);transform:translateY(-1px)}
.burger{display:none;background:none;border:0;cursor:pointer;color:var(--txt);font-size:1.5rem}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.6em;
  font-family:var(--f-mono);font-size:.82rem;letter-spacing:.04em;
  padding:14px 24px;border-radius:2px;
  transition:transform .2s,background .2s,border-color .2s;
  cursor:pointer;border:1px solid transparent;
}
.btn .ar{transition:transform .2s}
.btn:hover .ar{transform:translateX(4px)}
.btn-fill{background:var(--signal);color:#06231f;font-weight:600}
.btn-fill:hover{background:#10a08a;transform:translateY(-2px)}
.btn-line{border-color:var(--ink);color:var(--txt)}
.dark .btn-line{border-color:var(--ink-3);color:#fff}
.btn-line:hover{border-color:var(--signal);color:var(--signal-d)}
.dark .btn-line:hover{color:var(--signal)}
.btn-ghost{color:var(--signal-d);padding-inline:0}
.dark .btn-ghost{color:var(--signal)}

/* ---------- rack motif divider ---------- */
.rackline{
  height:14px;width:100%;
  background-image:repeating-linear-gradient(90deg,
    var(--ink-3) 0,var(--ink-3) 2px,transparent 2px,transparent 11px);
  opacity:.5;
}

/* ---------- footer ---------- */
.foot{background:var(--ink);color:var(--txt-inv-2);padding-block:64px 38px}
.foot a{color:var(--txt-inv-2);transition:color .2s}
.foot a:hover{color:var(--signal)}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;margin-bottom:48px}
.foot h4{color:#fff;font-size:.82rem;font-family:var(--f-mono);letter-spacing:.1em;text-transform:uppercase;margin-bottom:18px;font-weight:500}
.foot ul li{margin-bottom:11px;font-size:.92rem}
.foot-brand p{font-size:.92rem;max-width:30ch;margin-top:16px;line-height:1.7}
.foot-bot{border-top:1px solid var(--ink-3);padding-top:26px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:14px;font-size:.82rem;font-family:var(--f-mono)}
.foot-tag{color:var(--signal)}

/* ---------- reveal animation ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* ---------- responsive ---------- */
@media(max-width:920px){
  .foot-grid{grid-template-columns:1fr 1fr}
  .foot-brand{grid-column:1/-1}
}
@media(max-width:780px){
  .topbar{display:none}
  .nav-links{
    position:fixed;inset:70px 0 auto 0;
    background:var(--paper);flex-direction:column;
    gap:0;padding:8px 0;border-bottom:1px solid var(--line);
    transform:translateY(-120%);transition:transform .3s;
  }
  .nav-links.open{transform:none}
  .nav-links a{width:100%;padding:15px var(--gut);font-size:1rem}
  .nav-links a.active::after{display:none}
  .nav-links .nav-cta{margin:8px var(--gut);text-align:center;justify-content:center;display:flex}
  .burger{display:block}
}