/* Basic Reset */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
:root{
  --bg: #0b0e17;
  --ink: #0f1222;
  --muted: #f6f7fb;
  --card: #ffffff;
  --brand: #4b6bff;
  --brand-2: #00d1b2;
  --text: #131735;
  --text-weak: #5b607a;
  --ring: rgba(75,107,255,.25);
}

/* Typography */
body{
  font-family: "Inter", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--text);
  line-height: 1.5;
  background: #fff;
}
h1,h2,h3,h4{ margin: 0 0 12px; line-height: 1.2; color: var(--ink); }
h1{ font-size: clamp(30px, 5vw, 48px); font-weight: 800; }
h1 span{ color: var(--brand); }
h2{ font-size: clamp(24px, 3.3vw, 34px); font-weight: 800; }
h3{ font-size: 20px; }
.lead{ color: var(--text-weak); font-size: 18px; }

/* Layout helpers */
.container{ width: min(1120px, 92%); margin: 0 auto; }
.section{ padding: 64px 0; }
.section.muted{ background: var(--muted); }

/* Header */
.site-header{
  position: sticky; top: 0; z-index: 40;
  background: rgba(255,255,255,.85); backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid #edf0f7;
}
.header-inner{ display:flex; align-items:center; justify-content:space-between; gap: 16px; padding: 10px 0; }
.brand{ display:flex; align-items:center; gap:12px; }
.logo{ width:40px; height:40px; border-radius:8px; background: linear-gradient(135deg, var(--brand), var(--brand-2)); display:grid; place-items:center; color:#fff; font-weight:800; }
.brand-text span{ display:block; font-size:12px; color: var(--text-weak); }
.nav{ display:flex; gap:16px; align-items:center; }
.nav a{ text-decoration:none; color: var(--text); padding: 8px 10px; border-radius:8px; }
.nav a:hover{ background:#f1f3fb; }
.burger{ display:none; background:none; border:none; }
.burger span{ display:block; width:24px; height:2px; background:var(--text); margin:5px 0; }

/* Hero */
.hero{
  position: relative; color: #fff;
  background:
    radial-gradient(1200px 600px at 80% -20%, rgba(75,107,255,.35), transparent 60%),
    radial-gradient(900px 500px at 20% -20%, rgba(0,209,178,.35), transparent 50%),
    linear-gradient(160deg, #0b1130, #0b0e17);
}
.hero-inner{ display:grid; grid-template-columns: 1.2fr .8fr; gap: 24px; padding: 72px 0; align-items: center; }
.hero h1, .hero p{ color:#fff; }
.hero p{ opacity:.9; }
.contacts-line{ display:flex; flex-wrap:wrap; gap:10px 16px; margin-top:16px; opacity:.9; font-size:14px; }
.cta{ display:flex; gap:12px; margin: 18px 0 8px; }

.btn{ display:inline-block; padding: 10px 16px; border-radius: 10px; text-decoration:none; border:1px solid #cfd6ff; color:#fff; background: transparent; }
.btn.primary{ background: linear-gradient(135deg, var(--brand), var(--brand-2)); border-color: transparent; }
.btn.ghost{ border-color:#cfd6ff; background: transparent; }
.btn:hover{ filter: brightness(1.05); box-shadow: 0 6px 22px -8px var(--ring); }

.hero-art{ height: 280px; position: relative; }
.skyline{ position:absolute; inset: 40px 0 0 0; display:flex; align-items:flex-end; justify-content: center; gap: 12px; }
.tower{ width: 36px; height: 160px; background: linear-gradient(180deg, rgba(255,255,255,.85), rgba(255,255,255,.1)); border-radius:8px 8px 2px 2px; box-shadow: 0 20px 60px -20px rgba(0,0,0,.4); }
.tower.tall{ height: 220px; width: 42px; }
.tower.mid{ height: 195px; }
.tower.slim{ height: 240px; width: 18px; border-radius: 8px; }
.tower.wide{ height: 150px; width: 54px; }
.hero-fade{ position:absolute; inset: auto 0 -1px 0; height: 28px; background: linear-gradient(180deg, rgba(11,14,23,1), rgba(255,255,255,0)); filter: blur(3px); }

/* Cards & features */
.cards{ display:grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.cards.two{ grid-template-columns: repeat(2, 1fr); }
.card{
  background: var(--card); border: 1px solid #eef1f7; border-radius: 16px; padding: 20px;
  box-shadow: 0 6px 24px -18px rgba(0,0,0,.15);
}
.card .icon{ font-size: 28px; }
.features{ display:grid; grid-template-columns: repeat(5, 1fr); gap:16px; }
.feature{ background: var(--muted); border: 1px solid #edf0f7; border-radius: 14px; padding: 16px; }

.bullets{ padding-left: 18px; }
.bullets li{ margin: 8px 0; }
.bullets.two{ columns: 2; column-gap: 24px; }
.bullets.three{ columns: 3; column-gap: 24px; }
@media (max-width: 900px){
  .bullets.two{ columns: 1; }
  .bullets.three{ columns: 1; }
}

/* Areas grid */
.grid-areas{
  display:grid; grid-template-columns: repeat(4, 1fr); gap: 14px;
}
.area{
  border: 1px solid #eef1f7; border-radius: 14px; padding: 16px; background: #fff;
  transition: transform .2s ease, box-shadow .2s ease;
}
.area:hover{ transform: translateY(-2px); box-shadow: 0 10px 30px -18px rgba(0,0,0,.25); }

/* Contact */
.contact-grid{
  display:grid; grid-template-columns: 1.1fr .9fr; gap: 18px;
}
.contact-card{
  border: 1px solid #eef1f7; border-radius: 16px; padding: 20px; background:#fff;
}
.contact-form{
  border: 1px solid #eef1f7; border-radius: 16px; padding: 20px; background:#fff;
  display:grid; gap: 12px;
}
.contact-form input, .contact-form textarea{
  width:100%; padding: 12px 14px; border-radius: 10px; border:1px solid #dde3f0; font: inherit;
}
.contact-form input:focus, .contact-form textarea:focus{
  outline: none; border-color: var(--brand); box-shadow: 0 0 0 6px var(--ring);
}
.contact-actions{ display:flex; gap: 10px; margin-top: 10px; }
.privacy{ font-size: 12px; color: var(--text-weak); }

/* Footer */
.site-footer{
  border-top: 1px solid #edf0f7; background: #fafbff;
  color: var(--text-weak);
}
.foot-inner{
  display:flex; align-items:center; justify-content:space-between; padding: 18px 0;
}

/* Responsive */
@media (max-width: 1024px){
  .features{ grid-template-columns: repeat(3, 1fr); }
  .grid-areas{ grid-template-columns: repeat(3, 1fr); }
  .hero-inner{ grid-template-columns: 1fr; }
}
@media (max-width: 720px){
  .features{ grid-template-columns: repeat(2, 1fr); }
  .grid-areas{ grid-template-columns: repeat(2, 1fr); }
  .cards{ grid-template-columns: 1fr; }
  .cards.two{ grid-template-columns: 1fr; }
  .contact-grid{ grid-template-columns: 1fr; }
  .nav{ display:none; }
  .burger{ display:block; }
  body.nav-open .nav{ display:flex; position: absolute; inset: 60px 0 auto 0; background:#fff; border-bottom:1px solid #edf0f7; padding: 12px; gap: 6px; flex-wrap: wrap; }
  .site-header{ background:#fff; }
}