/* 21st Century Artsakh Tech Ltd — corporate IT one-pager
   Palette: deep navy + cyan. Clean, infrastructure-grade. */
:root {
  --navy-900: #071522;
  --navy-800: #0b1e33;
  --navy-700: #12314f;
  --line: #1d3a58;
  --cyan: #38bdf8;
  --cyan-dark: #0ea5e9;
  --ink: #0b1e33;
  --slate: #4a5b70;
  --mute: #7b8aa0;
  --bg: #f5f8fc;
  --card: #ffffff;
  --white: #ffffff;
  --radius: 14px;
  --wrap: 1140px;
  --shadow: 0 18px 45px -22px rgba(9, 30, 55, .35);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { line-height: 1.2; margin: 0 0 .5em; letter-spacing: -.01em; }
p { margin: 0 0 1.1em; color: var(--slate); }
a { color: var(--cyan-dark); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.eyebrow {
  display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: .18em;
  text-transform: uppercase; color: var(--cyan-dark); margin-bottom: 14px;
}

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(7, 21, 34, .92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: 12px; color: var(--white); font-weight: 700; letter-spacing: .01em; }
.brand .logo {
  width: 38px; height: 38px; border-radius: 9px; flex: 0 0 auto;
  background: linear-gradient(135deg, var(--cyan) 0%, var(--cyan-dark) 100%);
  display: grid; place-items: center; color: var(--navy-900); font-weight: 800; font-size: 18px;
}
.brand .name { font-size: 16px; }
.brand .name small { display: block; font-size: 10.5px; font-weight: 500; letter-spacing: .16em; text-transform: uppercase; color: var(--cyan); }
.menu { display: flex; gap: 4px; list-style: none; margin: 0; padding: 0; }
.menu a {
  color: #c7d5e6; font-size: 14px; font-weight: 600; padding: 9px 15px; border-radius: 8px;
  letter-spacing: .02em;
}
.menu a:hover { color: var(--white); background: rgba(56, 189, 248, .12); text-decoration: none; }
.nav-cta {
  color: var(--navy-900) !important; background: var(--cyan);
  padding: 9px 18px !important; border-radius: 8px; font-weight: 700 !important;
}
.nav-cta:hover { background: #7dd3fc; text-decoration: none; }
.menu-toggle { display: none; background: none; border: 0; color: var(--white); font-size: 26px; cursor: pointer; }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(1100px 500px at 78% -10%, rgba(56, 189, 248, .22), transparent 60%),
    linear-gradient(160deg, var(--navy-900) 0%, var(--navy-800) 55%, var(--navy-700) 120%);
  color: var(--white);
}
.hero::after {
  content: ""; position: absolute; inset: 0; opacity: .5; pointer-events: none;
  background-image: linear-gradient(rgba(56,189,248,.06) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(56,189,248,.06) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(700px 380px at 75% 20%, #000 40%, transparent 80%);
}
.hero .wrap { position: relative; z-index: 1; display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; padding-top: 84px; padding-bottom: 92px; }
.hero h1 { font-size: clamp(30px, 4vw, 50px); color: var(--white); }
.hero .lead { font-size: 18px; color: #b9cbe0; max-width: 34ch; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 26px; }
.btn {
  display: inline-block; font-weight: 700; font-size: 15px; padding: 13px 26px; border-radius: 10px;
  cursor: pointer; border: 1px solid transparent; transition: transform .12s ease, background .2s ease;
}
.btn:hover { transform: translateY(-2px); text-decoration: none; }
.btn-primary { background: var(--cyan); color: var(--navy-900); }
.btn-primary:hover { background: #7dd3fc; }
.btn-ghost { background: transparent; color: var(--white); border-color: rgba(255,255,255,.28); }
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); }
.hero-panel {
  border: 1px solid var(--line); border-radius: 16px; padding: 26px;
  background: linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.015));
  box-shadow: var(--shadow);
}
.hero-panel .row { display: flex; align-items: center; gap: 12px; padding: 12px 0; border-bottom: 1px dashed var(--line); }
.hero-panel .row:last-child { border-bottom: 0; }
.hero-panel .dot { width: 9px; height: 9px; border-radius: 50%; background: #34d399; box-shadow: 0 0 0 4px rgba(52,211,153,.16); flex: 0 0 auto; }
.hero-panel .k { color: #c7d5e6; font-size: 14px; }
.hero-panel .v { margin-left: auto; color: var(--white); font-weight: 700; font-family: ui-monospace, "Cascadia Code", Consolas, monospace; font-size: 13.5px; }

/* trust strip */
.trust { background: var(--navy-900); border-top: 1px solid var(--line); }
.trust .wrap { display: flex; flex-wrap: wrap; gap: 34px 56px; padding: 22px 24px; justify-content: center; }
.trust span { color: #8aa0ba; font-size: 13px; font-weight: 600; letter-spacing: .04em; }
.trust b { color: var(--cyan); }

/* ---------- Sections ---------- */
section { padding: 88px 0; }
section.alt { background: var(--white); }
.section-head { max-width: 720px; margin: 0 auto 52px; text-align: center; }
.section-head h2 { font-size: clamp(26px, 3vw, 38px); }
.section-head p { font-size: 17px; }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 54px; align-items: center; }
/* section imagery */
.media {
  margin: 0; border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--line); box-shadow: var(--shadow);
}
.media img { display: block; width: 100%; height: 100%; min-height: 300px; object-fit: cover; }

.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.card {
  background: var(--card); border: 1px solid #e3ebf4; border-radius: var(--radius);
  padding: 30px 26px; box-shadow: 0 10px 30px -24px rgba(9,30,55,.4);
  transition: transform .15s ease, box-shadow .2s ease, border-color .2s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: #bfe1f5; }
.card .ic {
  width: 48px; height: 48px; border-radius: 12px; display: grid; place-items: center;
  background: linear-gradient(135deg, #e0f4ff, #cbeafe); color: var(--cyan-dark);
  font-size: 22px; margin-bottom: 18px;
}
.card h3 { font-size: 19px; }
.card p { font-size: 14.5px; margin-bottom: 0; }

.uvp-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 12px; }
.uvp {
  border-left: 3px solid var(--cyan); padding: 6px 0 6px 20px;
}
.uvp h3 { font-size: 16.5px; margin-bottom: 6px; }
.uvp p { font-size: 14px; margin: 0; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.contact-info .line { display: flex; gap: 14px; padding: 14px 0; border-bottom: 1px solid #e3ebf4; }
.contact-info .line:last-child { border-bottom: 0; }
.contact-info .ic { color: var(--cyan-dark); font-size: 18px; width: 24px; flex: 0 0 auto; }
.contact-info .k { font-size: 12px; text-transform: uppercase; letter-spacing: .1em; color: var(--mute); }
.contact-info .val { font-weight: 600; color: var(--ink); }
form.contact-form { background: var(--white); border: 1px solid #e3ebf4; border-radius: var(--radius); padding: 30px; box-shadow: var(--shadow); }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--ink); }
.field input, .field textarea {
  width: 100%; padding: 12px 14px; border: 1px solid #d3deeb; border-radius: 9px;
  font: inherit; font-size: 14px; color: var(--ink); background: #fbfdff;
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(56,189,248,.18); }
.field textarea { resize: vertical; min-height: 120px; }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy-900); color: #93a6bd; border-top: 1px solid var(--line); }
.site-footer .wrap { padding: 46px 24px 30px; }
.foot-top { display: flex; justify-content: space-between; gap: 30px; flex-wrap: wrap; align-items: start; }
.foot-brand { color: var(--white); font-weight: 700; display: flex; align-items: center; gap: 10px; }
.foot-cols { display: flex; gap: 60px; flex-wrap: wrap; }
.foot-cols h4 { color: var(--white); font-size: 13px; text-transform: uppercase; letter-spacing: .08em; margin-bottom: 12px; }
.foot-cols a, .foot-cols p { color: #93a6bd; font-size: 14px; display: block; margin: 6px 0; }
.foot-bottom { margin-top: 34px; padding-top: 20px; border-top: 1px solid var(--line); font-size: 13px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero .wrap { grid-template-columns: 1fr; gap: 34px; padding-top: 60px; padding-bottom: 64px; }
  .split, .contact-grid { grid-template-columns: 1fr; gap: 30px; }
  .cards, .uvp-grid { grid-template-columns: 1fr; }
  .menu { display: none; }
  .menu.open {
    display: flex; flex-direction: column; position: absolute; top: 68px; left: 0; right: 0;
    background: var(--navy-800); padding: 12px 16px 20px; border-bottom: 1px solid var(--line); gap: 2px;
  }
  .menu.open a { padding: 12px 14px; }
  .menu-toggle { display: block; }
  section { padding: 62px 0; }
}