:root{
  --bg:#070b14;
  --surface:#0f172a;
  --surface2:#111c33;
  --text:#e5e7eb;
  --muted:#a5b4fc;
  --line:rgba(148,163,184,.25);
  --primary:#3b82f6;
  --accent:#22d3ee;
  --white:#fff;
  --shadow:0 10px 35px rgba(0,0,0,.35);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:'Inter',sans-serif;
  background:radial-gradient(circle at 10% 10%, #111a2e 0%, #070b14 50%);
  color:var(--text);
  overflow-x:hidden;
}
.container{width:min(1140px,92%);margin:auto}

/* floating background shapes */
.bg-shape{
  position:fixed; border-radius:50%; filter:blur(60px); z-index:-1; opacity:.35;
  animation:float 12s ease-in-out infinite;
}
.shape1{width:280px;height:280px;background:#2563eb;top:8%;left:-80px}
.shape2{width:320px;height:320px;background:#06b6d4;bottom:-80px;right:-80px;animation-delay:2s}
@keyframes float{
  0%,100%{transform:translateY(0)}
  50%{transform:translateY(-25px)}
}

/* glass effect */
.glass{
  background:rgba(15,23,42,.55);
  border:1px solid rgba(255,255,255,.1);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.topbar{
  position:sticky; top:0; z-index:99;
  border-bottom:1px solid var(--line);
}
.nav{
  display:flex; justify-content:space-between; align-items:center; padding:14px 0;
}
.brand{
  color:#fff;text-decoration:none;font-weight:700;letter-spacing:.2px;
}
nav a{
  color:#dbeafe;text-decoration:none;margin-left:16px;font-weight:500;
}
nav a:hover{color:#fff}

/* hero with photo */
.hero{
  min-height:90vh;
  position:relative;
  display:grid;
  place-items:center;
  background:
    url("https://images.unsplash.com/photo-1460925895917-afdab827c52f?auto=format&fit=crop&w=1800&q=80")
    center/cover no-repeat;
}
.hero-overlay{
  position:absolute; inset:0;
  background:linear-gradient(120deg, rgba(2,6,23,.85), rgba(15,23,42,.72));
}
.hero-content{
  position:relative; z-index:2; max-width:780px; text-align:left;
}
.tag{
  display:inline-block;
  background:rgba(59,130,246,.2);
  border:1px solid rgba(147,197,253,.4);
  color:#bfdbfe;
  font-size:.8rem;
  letter-spacing:.1em;
  text-transform:uppercase;
  padding:6px 10px; border-radius:999px;
}
h1{
  font-size:clamp(2rem,5vw,3.4rem);
  line-height:1.15; margin:14px 0;
}
.hero p{color:#d1d5db}
.cta{display:flex;gap:12px;margin-top:22px;flex-wrap:wrap}
.btn{
  padding:12px 18px; border-radius:12px; text-decoration:none; font-weight:700;
  display:inline-flex; align-items:center; justify-content:center; transition:.25s;
}
.btn.primary{
  background:linear-gradient(135deg,var(--primary),#2563eb);
  color:#fff; box-shadow:0 8px 24px rgba(37,99,235,.35);
}
.btn.primary:hover{transform:translateY(-2px)}
.btn.secondary{
  border:1px solid rgba(255,255,255,.35); color:#fff;
}
.btn.secondary:hover{background:rgba(255,255,255,.08)}
.btn.full{width:100%}

/* sections */
.section{padding:80px 0}
.alt{background:rgba(15,23,42,.55)}
.section-tag{
  font-size:.75rem; text-transform:uppercase; letter-spacing:.12em;
  color:#93c5fd; font-weight:700;
}
h2{font-size:clamp(1.6rem,3vw,2.4rem);margin:8px 0 14px}
p{color:#cbd5e1;line-height:1.75}
.grid2{
  display:grid;grid-template-columns:1.2fr .8fr;gap:20px;align-items:start;
}
.card{
  background:linear-gradient(180deg,rgba(30,41,59,.8),rgba(15,23,42,.8));
  border:1px solid var(--line);
  border-radius:16px;padding:20px;box-shadow:var(--shadow);
}
.card h3{margin-top:0;color:#dbeafe}

/* services */
.cards{
  margin-top:20px;
  display:grid; gap:14px;
  grid-template-columns:repeat(3,minmax(0,1fr));
}
.cards .card:hover{
  transform:translateY(-4px);
  border-color:rgba(34,211,238,.45);
  transition:.25s ease;
}

/* projects */
.projects{
  margin-top:20px;
  display:grid; gap:12px;
  grid-template-columns:repeat(2,minmax(0,1fr));
}
.project{
  padding:14px 16px;
  border:1px solid var(--line);
  border-left:4px solid var(--accent);
  border-radius:12px;
  background:rgba(15,23,42,.8);
  transition:.2s ease;
}
.project:hover{
  transform:translateX(3px);
  border-left-color:#38bdf8;
}

/* contact */
a{color:#93c5fd}
.whatsapp{
  position:fixed;right:18px;bottom:18px;z-index:100;
  width:52px;height:52px;border-radius:50%;
  background:#25D366;color:#fff;text-decoration:none;
  display:grid;place-items:center;font-size:1.3rem;
  box-shadow:0 10px 25px rgba(37,211,102,.45);
}

/* footer */
footer{
  border-top:1px solid var(--line);
  background:#020617;padding:16px 0;
}
.foot{display:flex;justify-content:space-between;align-items:center}
.foot a{text-decoration:none}

/* reveal animation */
.reveal{
  opacity:0;
  transform:translateY(22px);
  transition:all .8s cubic-bezier(.2,.65,.2,1);
}
.reveal.show{
  opacity:1;
  transform:translateY(0);
}

/* responsive */
@media (max-width:960px){
  .grid2,.cards,.projects{grid-template-columns:1fr}
}
@media (max-width:700px){
  nav{display:none}
}