:root{
  --bg:#07111f;
  --card:#101c2d;
  --hover:#16263d;
  --primary:#00d4ff;
  --text:#ffffff;
  --muted:#9fb3c8;
  --border:rgba(255,255,255,0.06);
}

*{
  margin:0;
  padding:0;
  box-sizing:border-box;
}

html{
  scroll-behavior:smooth;
}

body{
  font-family:'Inter',sans-serif;
  background:var(--bg);
  color:var(--text);
  overflow-x:hidden;
  line-height:1.7;
}

/* CONTAINER */
.container{
  width:min(1120px,90%);
  margin:auto;
}

/* HEADER */
.header{
  position:fixed;
  width:100%;
  top:0;
  z-index:1000;
  background:rgba(7,17,31,0.85);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
}

.nav{
  height:75px;
  display:flex;
  justify-content:space-between;
  align-items:center;
}

.logo{
  color:var(--primary);
  font-weight:700;
  font-size:1.4rem;
}

.nav-links{
  display:flex;
  gap:25px;
  list-style:none;
}

.nav-links a{
  color:white;
  text-decoration:none;
}

.nav-links a:hover{
  color:var(--primary);
}

/* HERO */
.hero{
  position:relative;
  min-height:92vh;
  display:flex;
  align-items:center;
  justify-content:center;
  background:url('https://images.unsplash.com/photo-1518770660439-4636190af475?q=80&w=2070') center/cover no-repeat;
}

.hero-overlay{
  position:absolute;
  inset:0;
  background:linear-gradient(to bottom, rgba(0,0,0,0.7), rgba(0,0,0,0.92));
}

.hero-content{
  position:relative;
  text-align:center;
  padding-top:120px;
}

.tag{
  display:inline-block;
  padding:8px 14px;
  border:1px solid rgba(0,212,255,0.2);
  border-radius:999px;
  color:var(--primary);
  margin-bottom:20px;
}

.hero h1{
  font-size:clamp(2.4rem,6vw,4.5rem);
  line-height:1.1;
  margin-bottom:20px;
}

.hero-subtitle{
  max-width:700px;
  margin:auto auto 35px;
  color:var(--muted);
}

/* BUTTONS */
.hero-buttons{
  display:flex;
  justify-content:center;
  gap:15px;
  flex-wrap:wrap;
}

.btn-primary,
.btn-secondary{
  padding:12px 26px;
  border-radius:10px;
  text-decoration:none;
  font-weight:600;
}

.btn-primary{
  background:var(--primary);
  color:#001018;
}

.btn-secondary{
  border:1px solid var(--border);
  color:white;
}

/* SECTIONS */
.section{
  padding:90px 0;
}

.section-title{
  text-align:center;
  margin-bottom:50px;
}

.section-title h2{
  font-size:2rem;
  margin-bottom:10px;
}

.section-title p{
  color:var(--muted);
}

/* GRID */
.grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(240px,1fr));
  gap:20px;
}

/* CARDS */
.card{
  background:var(--card);
  padding:30px;
  border-radius:18px;
  border:1px solid var(--border);
  transition:0.3s;
}

.card:hover{
  transform:translateY(-6px);
  background:var(--hover);
}

.icon{
  font-size:1.8rem;
  margin-bottom:12px;
  color:var(--primary);
}

.card h3{
  margin-bottom:10px;
}

/* ABOUT */
.dark-section{
  background:#091524;
}

.about-grid{
  display:grid;
  grid-template-columns:1.2fr 1fr;
  gap:40px;
  align-items:center;
}

.about-text{
  color:var(--muted);
  margin-bottom:15px;
}

/* STATS */
.stats-box{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:15px;
}

.stat{
  background:var(--card);
  padding:25px;
  border-radius:14px;
  text-align:center;
}

.stat h3{
  color:var(--primary);
}

/* CONTACT */
.contact-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:20px;
}

.contact-card{
  background:var(--card);
  padding:35px;
  border-radius:18px;
  text-align:center;
  border:1px solid var(--border);
}

.contact-icon{
  font-size:2rem;
  margin-bottom:10px;
  color:var(--primary);
}

/* FOOTER */
.footer{
  padding:25px;
  text-align:center;
  border-top:1px solid var(--border);
  color:var(--muted);
}

/* MOBILE */
@media(max-width:900px){
  .nav{
    flex-direction:column;
    height:auto;
    padding:15px 0;
  }

  .about-grid{
    grid-template-columns:1fr;
  }
}