* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, sans-serif;
  background: #000;
  color: #fff;
}

/* HEADER */
.header {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 20px 40px;
  background: rgba(0,0,0,0.9);
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 10;
}
.logo { font-size: 22px; font-weight: bold; }
.nav a { color: #fff; text-decoration: none; margin-left: 25px; font-size: 16px; }

/* HERO */
.hero {
  min-height: 100vh;
  padding-top: 120px;
  background: linear-gradient(rgba(0,0,0,.75), rgba(0,0,0,.95)),
              url("https://images.unsplash.com/photo-1511707171634-5f897ff02aa9") center/cover no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}
.hero h1 { font-size: 42px; margin: 0; }
.hero-phone { font-size: 36px; font-weight: 600; margin: 15px 0; }

/* BUTTON */
.btn-main { display: inline-block; margin-top: 25px; padding: 15px 40px; background:#0071e3; color:#fff; border-radius:30px; text-decoration:none; font-size:16px; }

/* STATS */
.stats { display:flex; justify-content:center; gap:40px; padding:60px 20px; background:#fff; color:#000; text-align:center; }
.stat { max-width:200px; }
.stat-icon { font-size:36px; margin-bottom:10px; }

/* FOOTER */
footer { background:#000; color:#fff; text-align:center; padding:50px 20px; font-size:16px; }

/* RÓLUNK OLDAL */
.about-page { padding:160px 20px 60px; max-width:700px; margin:auto; text-align:left; }
.about-page h1 { font-size:36px; margin-bottom:20px; }
.about-page p { opacity:0.85; line-height:1.6; }

/* REFERENCIÁK */
.references { padding:80px 20px 120px; background:#111; text-align:center; }
.references h2 { font-size:32px; margin-bottom:10px; }
.reference-text { font-size:18px; opacity:0.85; margin-bottom:40px; }
.reference-images { display:grid; grid-template-columns:repeat(auto-fit, minmax(280px,1fr)); gap:25px; max-width:1100px; margin:auto; }
.reference-images img { width:100%; border-radius:14px; box-shadow:0 10px 30px rgba(0,0,0,0.5); cursor:pointer; }

/* Lightbox képek hover effekt */
.reference-images img {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.reference-images img:hover {
  transform: scale(1.05);
  box-shadow: 0 15px 40px rgba(0,0,0,0.7);
}

/* AJÁNLATKÉRŐ */
.container { max-width:500px; margin:150px auto 50px; padding:20px; }
label { display:block; margin-top:20px; font-size:14px; }
select,input[type=range]{ width:100%; padding:12px; border-radius:12px; border:none; background:#111; color:#fff; margin-top:5px; }
.range-value { text-align:center; margin-top:8px; }

/* MOBILE */
@media(max-width:768px){
  .hero h1{ font-size:32px; }
  .hero-phone{ font-size:28px; }
  .stats{ flex-direction:column; gap:25px; }
}