:root {
  --bg: #11111D;
  --bg-alt: #142538;
  --accent: #4FD1C5;
  --accent-dark: #3BB0A5;
  --text: #E8EEF4;
  --text-dim: #9FB0C2;
  --border: #1E3048;
  --max: 1120px;
  --radius: 10px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--accent-dark); }

img { max-width: 100%; display: block; }

/* Header */
.site-header {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(8px);
  background: rgba(17, 17, 29, 0.85);
}

.nav {
  max-width: var(--max);
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
}

.brand img { height: 44px; width: auto; }

.brand-text { line-height: 1.1; }
.brand-name {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--accent);
}
.brand-tag {
  font-size: 10px;
  letter-spacing: 1.5px;
  color: var(--text-dim);
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
}
.nav-links a {
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--accent);
  border-color: var(--accent);
}

/* Main */
main { flex: 1; }

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

/* Hero */
.hero {
  padding: 80px 24px 64px;
  text-align: center;
  background: linear-gradient(180deg, #11111D 0%, #142538 100%);
  border-bottom: 1px solid var(--border);
}
.hero img.logo-main {
  max-width: 420px;
  width: 80%;
  margin: 0 auto 28px;
  border: 1px solid var(--accent);
  border-radius: 18px;
  box-shadow: 0 0 32px rgba(79, 209, 197, 0.35), 0 0 64px rgba(79, 209, 197, 0.15);
}
.hero h1 {
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
  line-height: 1.3;
}
.hero .lead {
  font-size: clamp(15px, 1.6vw, 17px);
  color: var(--text-dim);
  max-width: 700px;
  margin: 0 auto;
}

/* Sections */
section {
  padding: 72px 0;
  border-bottom: 1px solid var(--border);
}
section:last-of-type { border-bottom: none; }

.section-title {
  font-size: clamp(24px, 3vw, 32px);
  color: var(--accent);
  margin-bottom: 12px;
  text-align: center;
  letter-spacing: 0.5px;
}
.section-sub {
  text-align: center;
  color: var(--text-dim);
  max-width: 720px;
  margin: 0 auto 48px;
}

/* Products grid */
.products {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.product-card {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.product-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: 0 12px 32px rgba(0,0,0,0.35);
}
.product-card h3 {
  color: var(--accent);
  font-size: 20px;
  margin-bottom: 12px;
}
.product-card p {
  color: var(--text-dim);
  font-size: 15px;
  margin-bottom: 20px;
}
.product-card ul {
  list-style: none;
  padding: 0;
  margin-bottom: 20px;
}
.product-card ul li {
  color: var(--text-dim);
  font-size: 14px;
  padding: 6px 0 6px 22px;
  position: relative;
}
.product-card ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  width: 10px;
  height: 2px;
  background: var(--accent);
}

.btn {
  display: inline-block;
  padding: 10px 22px;
  background: var(--accent);
  color: var(--bg);
  border-radius: 6px;
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.5px;
  border: none;
  cursor: pointer;
  transition: background .2s ease;
}
.btn:hover { background: var(--accent-dark); color: var(--bg); }
.btn-ghost {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}
.btn-ghost:hover { background: var(--accent); color: var(--bg); }

/* Product page detailed */
.product-detail {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-bottom: 40px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
}
.product-detail h2 {
  color: var(--accent);
  font-size: 24px;
  margin-bottom: 16px;
}
.product-detail p {
  color: var(--text-dim);
  margin-bottom: 16px;
}
.product-detail ul {
  list-style: none;
  padding: 0;
}
.product-detail ul li {
  color: var(--text-dim);
  padding: 8px 0 8px 24px;
  position: relative;
}
.product-detail ul li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 8px;
  color: var(--accent);
  font-weight: bold;
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin-top: 24px;
}
@media (max-width: 720px) {
  .contact-grid { grid-template-columns: 1fr; gap: 32px; }
}

.contact-info h3 {
  color: var(--accent);
  margin-bottom: 16px;
  font-size: 16px;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.contact-info .entry {
  margin-bottom: 22px;
}
.contact-info .entry .label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-dim);
  margin-bottom: 4px;
}
.contact-info .entry a { font-size: 15px; word-break: break-all; }

.socials {
  display: flex;
  gap: 14px;
  margin-top: 20px;
}
.socials a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  transition: all .2s ease;
}
.socials a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* Form */
.contact-form {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}
.contact-form h3 {
  color: var(--accent);
  margin-bottom: 20px;
  font-size: 16px;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.form-group { margin-bottom: 18px; }
.form-group label {
  display: block;
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-family: inherit;
  font-size: 15px;
  transition: border-color .2s ease;
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}
.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-status {
  margin-top: 14px;
  padding: 12px 16px;
  border-radius: 6px;
  font-size: 14px;
  display: none;
}
.form-status.ok {
  display: block;
  background: rgba(79, 209, 197, 0.15);
  color: var(--accent);
  border: 1px solid var(--accent);
}
.form-status.err {
  display: block;
  background: rgba(239, 68, 68, 0.15);
  color: #F87171;
  border: 1px solid #F87171;
}

/* Footer */
.site-footer {
  background: #0A0A14;
  border-top: 1px solid var(--border);
  padding: 32px 24px;
  margin-top: auto;
}
.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-inner p {
  color: var(--text-dim);
  font-size: 13px;
}
.footer-links {
  display: flex;
  gap: 20px;
  list-style: none;
}
.footer-links a { color: var(--text-dim); font-size: 13px; }
.footer-links a:hover { color: var(--accent); }

/* Mobile nav */
@media (max-width: 640px) {
  .nav { padding: 14px 20px; }
  .nav-links { gap: 18px; }
  .nav-links a { font-size: 12px; }
  .brand-name { font-size: 13px; }
  .brand-tag { font-size: 9px; }
  .brand img { height: 36px; }
  .hero { padding: 56px 20px 48px; }
  section { padding: 56px 0; }
  .product-detail { padding: 28px 22px; }
}