:root{
  --bg:#f6f7f9;
  --fg:#1a1a1a;
  --muted:#666;
  --red:#b22222;
  --red-dark:#901c1c;
  --white:#fff;
  --card:#ffffff;
  --shadow:0 8px 26px rgba(0,0,0,.08);
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Inter, Arial, sans-serif;
  color:var(--fg);
  background:var(--bg);
  line-height:1.6;
}

.container{max-width:1100px;margin:0 auto;padding:0 20px}

.site-header{
  background:var(--white);
  position:sticky; top:0; z-index:10;
  box-shadow: var(--shadow);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px;}
.brand{font-weight:800;text-decoration:none;color:var(--fg);font-size:1.1rem;letter-spacing:.5px}
.brand-accent{color:var(--red)}

nav a{margin-left:18px;text-decoration:none;color:var(--fg);opacity:.8}
nav a:hover{opacity:1}
.btn{
  display:inline-block;border-radius:999px;padding:.55rem 1rem;
  border:1px solid var(--red); color:var(--red); text-decoration:none;
  transition:transform .2s ease, background .2s ease, color .2s ease;
}
.btn:hover{transform:translateY(-1px); background:var(--red); color:var(--white)}
.btn-primary{background:var(--red); color:var(--white)}
.btn-primary:hover{background:var(--red-dark)}

.hero{
  padding:92px 0 72px;
  background:linear-gradient(180deg, #fff 0%, #fff 60%, var(--bg) 100%);
}
.hero h1{font-size:48px;margin:0 0 10px}
.hero p{color:var(--muted);margin:0 0 22px}

.features, .section{padding:56px 0}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr); gap:20px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr); gap:16px}
.card{
  background:var(--card); padding:20px; border-radius:18px; box-shadow: var(--shadow);
}
.project .thumb{
  width:100%; padding-top:56%; background-size:cover; background-position:center;
  border-radius:14px; margin-bottom:12px;
}
.site-footer{padding:24px 0;color:var(--muted)}

.alert{padding:12px 14px;border-radius:10px;margin-bottom:14px}
.alert.success{background:#e9f9ef; color:#185a2b}
.alert.error{background:#fdeaea; color:#7a1c1c}

.contact-form input, .contact-form textarea{
  width:100%; padding:10px 12px; border-radius:12px; border:1px solid #ddd; background:#fff;
}
.contact-form label{display:block;margin:6px 0 6px;color:#444}
.contact-form .hp{display:none !important}

[data-reveal]{opacity:0; transform: translateY(10px); transition: all .5s ease}
[data-reveal].is-visible{opacity:1; transform:none}

/* LIGHTBOX */
.lb-overlay{position:fixed;inset:0;background:rgba(0,0,0,.85);display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:opacity .2s ease;z-index:50;padding:20px}
.lb-overlay.is-open{opacity:1;pointer-events:auto}
.lb-img{max-width:90vw;max-height:80vh;border-radius:12px;box-shadow:var(--shadow);display:block;margin:0 auto}
.lb-caption{color:#eee;text-align:center;margin-top:10px}
.lb-close,.lb-prev,.lb-next{position:absolute;border:none;background:rgba(255,255,255,.1);color:#fff;font-size:28px;line-height:1;width:44px;height:44px;border-radius:999px;cursor:pointer;display:flex;align-items:center;justify-content:center;backdrop-filter:blur(3px)}
.lb-close{top:20px;right:20px}
.lb-prev{left:20px;top:50%;transform:translateY(-50%)}
.lb-next{right:20px;top:50%;transform:translateY(-50%)}
.lb-prev:hover,.lb-next:hover,.lb-close:hover{background:rgba(255,255,255,.2)}

@media (max-width: 900px){
  .grid-3{grid-template-columns:1fr 1fr}
}
@media (max-width: 640px){
  .nav{height:auto; padding:10px 0; flex-wrap:wrap; gap:10px}
  nav a{margin-left:10px}
  .hero h1{font-size:36px}
  .grid-3{grid-template-columns:1fr}
  .grid-2{grid-template-columns:1fr}
}