:root{
  --bg:#0f1115; --panel:#141824; --elev:#0b0e14; --text:#e7ebf3; --muted:#9aa4b2;
  --brand:#4BA3FF; --brand-2:#15C39A; --danger:#ff6b6b; --ok:#27ae60;
  --ring: 0 0 0 8px hsl(212 100% 64% / .08);
  --shadow-1: 0 10px 30px rgba(0,0,0,.35); --shadow-2: 0 30px 60px rgba(0,0,0,.45);
  --grad-hero: radial-gradient(1200px 600px at 80% -10%, rgba(75,163,255,.25), transparent 60%),
               radial-gradient(900px 500px at 0% 0%, rgba(21,195,154,.18), transparent 60%),
               linear-gradient(180deg, #0e121a 0%, #0a0c12 100%);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,Arial,Helvetica,sans-serif}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

/* Header / Nav */
header{position:sticky;top:0;z-index:1000;background:rgba(10,12,18,.6);backdrop-filter: blur(12px);border-bottom:1px solid rgba(255,255,255,.06)}
.nav{max-width:1200px;margin:auto;display:flex;align-items:center;justify-content:space-between;padding:14px 20px}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;letter-spacing:.4px}
.brand-link{ text-decoration:none; color:inherit; cursor:pointer; }
.brand-link:focus-visible{ outline:2px solid #4BA3FF; outline-offset:4px; border-radius:8px; }
.brand-link:hover{ opacity:.9; }

/* Skyscraper logo */
.logo{
  width:30px;height:38px;position:relative;border-radius:4px;
  background:linear-gradient(to top,#4BA3FF 0%,#15C39A 100%);
  box-shadow:0 10px 20px rgba(75,163,255,.25), inset 0 0 0 2px rgba(255,255,255,.08);
}
.logo:before,.logo:after{
  content: ""; position:absolute; bottom:0; width:6px; background:#e7ebf3; border-radius:2px;
}
.logo:before{left:6px;height:60%}
.logo:after{right:6px;height:40%}

.brand-title{font-family:Poppins,Inter,sans-serif; font-size:1.05rem; line-height:1}
.brand-sub{color:var(--muted)}
.nav ul{list-style:none;display:flex;gap:20px;margin:0;padding:0}
.nav a.link{padding:10px 14px;border-radius:10px;color:var(--muted);font-weight:600}
.nav a.link.active, .nav a.link:hover{color:var(--text);background:rgba(255,255,255,.06)}
.cta{padding:10px 16px;border-radius:12px;background:linear-gradient(90deg,var(--brand),#3ec2c0);box-shadow:var(--shadow-1);font-weight:700}

/* Mobile menu */
.burger{display:none;flex-direction:column;gap:6px;background:transparent;border:0;color:inherit}
.burger span{width:26px;height:2px;background:#dbe5f7;border-radius:2px}
@media (max-width: 900px){
  .nav ul{display:none}
  .burger{display:flex}
  .mobile{position:fixed;inset:64px 16px auto 16px;background:var(--panel);border-radius:16px;padding:16px;display:none;flex-direction:column;gap:8px;box-shadow:var(--shadow-2)}
  .mobile a{padding:12px 14px;border-radius:10px;color:var(--muted)}
  .mobile.show{display:flex}
}

/* Hero */
.hero{background:var(--grad-hero);position:relative;overflow:hidden}
.hero-inner{max-width:1200px;margin:auto;display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;padding:80px 20px}
.kicker{color:var(--brand-2);font-weight:700;letter-spacing:.14em;text-transform:uppercase;font-size:.8rem}
h1{font-family:Poppins,Inter,sans-serif;font-weight:700;font-size: clamp(32px, 4.5vw, 56px);line-height:1.06;margin:10px 0}
.sub{color:var(--muted);font-size: clamp(14px, 1.6vw, 18px);margin:16px 0 28px;max-width:680px}
.actions{display:flex;gap:12px;flex-wrap:wrap}
.btn{border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.03);padding:12px 16px;border-radius:12px;font-weight:700;cursor:pointer}
.btn.primary{border:none;background:linear-gradient(90deg,var(--brand),#3ec2c0)}

/* Sections */
section{max-width:1200px;margin:0 auto;padding:80px 20px}
.section-head{display:flex;align-items:end;justify-content:space-between;margin-bottom:28px;gap:12px}
.section-head h2{font-family:Poppins,Inter,sans-serif;margin:0;font-size: clamp(24px, 3vw, 36px)}
.section-head p{color:var(--muted);max-width:720px;margin:0}

/* Projects */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{background:var(--panel);border:1px solid rgba(255,255,255,.06);border-radius:16px;overflow:hidden;box-shadow:var(--shadow-1);transform: translateY(0);transition: transform .3s ease, box-shadow .3s ease}
.card:hover{transform: translateY(-4px);box-shadow:0 20px 60px rgba(0,0,0,.55)}
.card img{height:180px;object-fit:cover}
.card-body{padding:16px}
.tag{display:inline-block;padding:6px 10px;border-radius:999px;border:1px solid rgba(255,255,255,.12);color:#cfe4ff;font-weight:600;font-size:.82rem}
.card h3{margin:10px 0 6px;font-size:1.1rem}
.card p{margin:0;color:var(--muted)}
.filters{display:flex;gap:10px;flex-wrap:wrap;margin:8px 0 22px}
.chip{padding:8px 12px;border-radius:999px;border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.03);cursor:pointer;font-weight:600;color:var(--muted)}
.chip.active{background:linear-gradient(90deg,var(--brand),#3ec2c0);color:#0a0c12;border:none}
@media(max-width: 1000px){.grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width: 640px){.grid{grid-template-columns:1fr}}

/* Services */
.services{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.service{padding:20px;border-radius:16px;background:linear-gradient(160deg, rgba(255,255,255,.06), rgba(255,255,255,.02));border:1px solid rgba(255,255,255,.08)}
.service h3{margin:8px 0}
.service p{color:var(--muted)}
@media(max-width: 1000px){.services{grid-template-columns:repeat(2,1fr)}}
@media(max-width: 640px){.services{grid-template-columns:1fr}}

/* About */
.about-wrap{display:grid;grid-template-columns:1.2fr .8fr;gap:28px}
.timeline{position:relative;padding-left:22px}
.timeline:before{content:"";position:absolute;left:8px;top:0;bottom:0;width:2px;background:linear-gradient(var(--brand),transparent)}
.moment{margin:0 0 18px;position:relative}
.moment:before{content:"";position:absolute;left:-7px;top:5px;width:14px;height:14px;border-radius:50%;background:radial-gradient(circle at 30% 30%, #fff, var(--brand));box-shadow:0 0 0 5px rgba(75,163,255,.15)}
.about-card{background:var(--panel);border:1px solid rgba(255,255,255,.06);border-radius:16px;padding:18px}
.certs{display:flex;gap:8px;margin-top:8px;flex-wrap:wrap}
@media(max-width: 900px){.about-wrap{grid-template-columns:1fr}}

/* Contact */
.contact-wrap{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.map{height:340px;border-radius:16px;background:linear-gradient(135deg, rgba(75,163,255,.12), rgba(21,195,154,.12));border:1px solid rgba(255,255,255,.08);display:grid;place-items:center;color:#bcd7ff;overflow:hidden}
.map iframe{width:100%;height:100%;border:0;border-radius:16px}
.map-inner{text-align:center}
.map-title{font-size:20px;font-weight:700}
form{background:linear-gradient(160deg, rgba(255,255,255,.06), rgba(255,255,255,.02));border:1px solid rgba(255,255,255,.08);border-radius:16px;padding:18px}
.row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
label{display:block;font-weight:600;margin:10px 0 6px;color:#cfe4ff}
input,textarea,select{width:100%;padding:12px 14px;border-radius:12px;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.03);color:var(--text);outline:none}
input:focus,textarea:focus,select:focus{box-shadow:var(--ring);border-color:rgba(75,163,255,.6)}
.help{color:var(--muted);font-size:.9rem;margin-top:6px}
.form-actions{display:flex;gap:10px;align-items:center;margin-top:12px}
.note{font-size:.9rem;color:var(--muted)}
@media(max-width: 900px){.contact-wrap{grid-template-columns:1fr}.row{grid-template-columns:1fr}}

/* Footer */
footer{padding:28px 20px;border-top:1px solid rgba(255,255,255,.06);background:#0c0f16;color:var(--muted)}
.foot{max-width:1200px;margin:auto;display:flex;gap:14px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.foot-links{display:flex;gap:10px;align-items:center}

/* Utilities / Animations */
.hide{display:none}
.reveal{opacity:0;transform:translateY(14px);transition: all .7s cubic-bezier(.2,.7,.2,1)}
.reveal.show{opacity:1;transform:translateY(0)}
.tilt{transform: perspective(800px) rotateX(0) rotateY(0);transition: transform .2s ease}
.tilt:hover{transform: perspective(800px) rotateX(2deg) rotateY(-2deg)}
.pulse{animation:pulse 2.2s ease-in-out infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(75,163,255,.0)}50%{box-shadow:0 0 0 14px rgba(75,163,255,.08)}}

/* Modal */
.modal{position:fixed;inset:0;background:rgba(0,0,0,.6);display:none;align-items:center;justify-content:center;padding:20px;z-index:2000}
.modal.show{display:flex}
.modal-card{max-width:800px;width:100%;background:var(--panel);border:1px solid rgba(255,255,255,.08);border-radius:16px;box-shadow:var(--shadow-2);overflow:hidden}
.modal-head{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid rgba(255,255,255,.06)}
.modal-title{font-weight:700}
.modal-body{padding:16px}
.modal-img{border-radius:12px;margin-bottom:12px}
.close{cursor:pointer;padding:8px 10px;border-radius:10px;border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.04)}