/* ==========================================================================
   Ткаченко Ю.Н. — сайт услуг. Тёмная техно-тема, графит + акцентный циан.
   ========================================================================== */

:root{
  --bg: #0b1220;
  --bg-alt: #0f1830;
  --surface: #121b33;
  --surface-2: #16213d;
  --border: #263356;
  --text: #e6ebf5;
  --text-muted: #9aa7c7;
  --accent: #22d3ee;
  --accent-2: #6ee7ff;
  --accent-contrast: #05202a;
  --danger: #f87171;
  --success: #4ade80;
  --radius: 14px;
  --shadow: 0 20px 45px -20px rgba(0,0,0,.55);
  --max-w: 1160px;
  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  font-family: var(--font);
  background: radial-gradient(1200px 600px at 80% -10%, #16264a 0%, transparent 60%),
              radial-gradient(900px 500px at -10% 20%, #12203f 0%, transparent 55%),
              var(--bg);
  color: var(--text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

img{ max-width:100%; display:block; }
a{ color: var(--accent); text-decoration: none; }
a:hover{ color: var(--accent-2); }

.container{
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: 20px;
}

.skip-link{
  position:absolute; left:-999px; top:0; background:var(--accent); color:var(--accent-contrast);
  padding:10px 16px; border-radius:0 0 8px 0; z-index:200; font-weight:600;
}
.skip-link:focus{ left:0; }

/* ---------- Header ---------- */
.site-header{
  position: sticky; top:0; z-index:100;
  background: rgba(11,18,32,.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-inner{
  display:flex; align-items:center; justify-content:space-between;
  gap: 16px; padding-block: 14px;
}
.brand{ display:flex; align-items:center; gap:10px; color:var(--text); }
.brand-mark{ color: var(--accent); display:flex; }
.brand-text{ display:flex; flex-direction:column; line-height:1.15; }
.brand-text strong{ font-size:1rem; letter-spacing:.2px; }
.brand-text small{ color: var(--text-muted); font-size:.72rem; }

.main-nav{ display:flex; gap:26px; }
.main-nav a{ color: var(--text); font-size:.94rem; font-weight:500; }
.main-nav a:hover{ color: var(--accent); }

.header-actions{ display:flex; align-items:center; gap:14px; }

.nav-toggle{
  display:none; flex-direction:column; justify-content:center; gap:5px;
  width:38px; height:38px; background:transparent; border:1px solid var(--border);
  border-radius:8px; cursor:pointer;
}
.nav-toggle span{ display:block; width:18px; height:2px; background: var(--text); margin-inline:auto; }

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding: 11px 20px; border-radius: 10px; font-weight:600; font-size:.94rem;
  border:1px solid transparent; cursor:pointer; transition: transform .15s ease, background .15s ease, border-color .15s ease, color .15s ease;
  white-space: nowrap;
}
.btn:hover{ transform: translateY(-1px); }
.btn-primary{ background: var(--accent); color: var(--accent-contrast); }
.btn-primary:hover{ background: var(--accent-2); color: var(--accent-contrast); }
.btn-outline{ border-color: var(--border); color: var(--text); }
.btn-outline:hover{ border-color: var(--accent); color: var(--accent); }
.btn-ghost{ color: var(--text); border-color: transparent; }
.btn-ghost:hover{ color: var(--accent); }
.btn-danger{ background: transparent; border-color: var(--danger); color: var(--danger); }
.btn-danger:hover{ background: var(--danger); color: #2a0a0a; }
.btn-sm{ padding: 7px 14px; font-size:.82rem; }
.btn[disabled]{ opacity:.6; cursor:not-allowed; transform:none; }

/* ---------- Hero ---------- */
.hero{ padding-block: 84px 60px; }
.hero-inner{ max-width: 780px; }
.eyebrow{
  color: var(--accent); text-transform: uppercase; letter-spacing: 1.6px;
  font-size:.78rem; font-weight:700; margin: 0 0 14px;
}
.hero h1{
  font-size: clamp(2rem, 4.2vw, 3.1rem); line-height:1.15; margin:0 0 20px; letter-spacing:-.02em;
}
.hero h1 .accent{ color: var(--accent); }
.hero-lead{ color: var(--text-muted); font-size:1.08rem; max-width: 640px; margin:0 0 30px; }
.hero-cta{ display:flex; gap:14px; flex-wrap:wrap; margin-bottom: 42px; }

.hero-stats{ list-style:none; display:flex; gap:34px; padding:0; margin:0; flex-wrap:wrap; }
.hero-stats li{ display:flex; flex-direction:column; color: var(--text-muted); font-size:.85rem; }
.hero-stats li span{ color: var(--text); font-size:1.4rem; font-weight:700; }

/* ---------- Section shell ---------- */
section{ padding-block: 64px; }
.section-title{ font-size: clamp(1.5rem, 2.6vw, 2rem); margin: 0 0 10px; letter-spacing:-.01em; }
.section-lead{ color: var(--text-muted); max-width: 620px; margin: 0 0 40px; }

/* ---------- Services ---------- */
.cards-grid{
  display:grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 22px;
}
.card{
  background: linear-gradient(180deg, var(--surface), var(--surface-2));
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 26px 24px; box-shadow: var(--shadow);
}
.card-icon{
  width:52px; height:52px; border-radius: 12px; display:flex; align-items:center; justify-content:center;
  background: rgba(34,211,238,.1); color: var(--accent); margin-bottom: 18px;
}
.card h3{ margin: 0 0 10px; font-size:1.12rem; }
.card p{ color: var(--text-muted); margin: 0 0 14px; font-size:.94rem; }
.card-list{ margin:0; padding-left: 18px; color: var(--text-muted); font-size:.88rem; display:grid; gap:6px; }
.card-list li::marker{ color: var(--accent); }

/* ---------- Advantages ---------- */
.advantages{ background: var(--bg-alt); border-block: 1px solid var(--border); }
.advantages-inner{ display:grid; grid-template-columns: 1fr 1.4fr; gap: 40px; align-items:start; }
.advantages-grid{ display:grid; grid-template-columns: repeat(auto-fit, minmax(220px,1fr)); gap: 20px; }
.adv-item h3{ font-size:1.02rem; margin:0 0 8px; color: var(--accent-2); }
.adv-item p{ color: var(--text-muted); margin:0; font-size:.9rem; }

/* ---------- Process ---------- */
.process-steps{
  list-style:none; margin:0; padding:0;
  display:grid; grid-template-columns: repeat(auto-fit, minmax(220px,1fr)); gap: 24px; counter-reset: step;
}
.process-steps li{
  border: 1px solid var(--border); border-radius: var(--radius); padding: 22px 20px;
  background: var(--surface);
}
.step-num{
  display:inline-flex; align-items:center; justify-content:center;
  width:32px; height:32px; border-radius:50%; background: var(--accent); color: var(--accent-contrast);
  font-weight:700; margin-bottom: 14px;
}
.process-steps h3{ margin:0 0 8px; font-size:1rem; }
.process-steps p{ margin:0; color: var(--text-muted); font-size:.88rem; }

/* ---------- Contact ---------- */
.contact-inner{ display:grid; grid-template-columns: 1fr 1.1fr; gap: 48px; align-items:start; }
.contact-list{ list-style:none; margin: 26px 0 0; padding:0; display:grid; gap: 16px; }
.contact-list li{ display:flex; flex-direction:column; gap:2px; }
.contact-label{ color: var(--text-muted); font-size:.78rem; text-transform:uppercase; letter-spacing:.6px; }
.contact-list a{ font-weight:600; }

.contact-form{
  background: var(--surface); border:1px solid var(--border); border-radius: var(--radius);
  padding: 28px 26px; box-shadow: var(--shadow); display:flex; flex-direction:column;
}
.contact-form h3{ margin:0 0 18px; }
.contact-form label{ font-size:.85rem; color: var(--text-muted); margin: 14px 0 6px; }
.contact-form label:first-of-type{ margin-top:0; }
.contact-form input[type="text"],
.contact-form select,
.contact-form textarea{
  width:100%; background: var(--bg); border:1px solid var(--border); border-radius:8px;
  color: var(--text); padding: 11px 12px; font-family: inherit; font-size: .94rem;
}
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus{
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(34,211,238,.15);
}
.hp-field{ position:absolute !important; left:-9999px !important; width:1px; height:1px; opacity:0; }

.consent{
  display:flex; align-items:flex-start; gap:10px; margin: 18px 0 20px !important;
  font-size:.82rem; color: var(--text-muted); cursor:pointer;
}
.consent input{ margin-top:3px; accent-color: var(--accent); }

.form-status{ min-height: 20px; font-size:.88rem; margin: 12px 0 0; }
.form-status.ok{ color: var(--success); }
.form-status.err{ color: var(--danger); }

/* ---------- News / Articles listing ---------- */
.listing{ padding-block: 60px; }
.post-grid{ display:grid; grid-template-columns: repeat(auto-fit, minmax(280px,1fr)); gap: 22px; margin-top: 30px; }
.post-card{
  background: linear-gradient(180deg, var(--surface), var(--surface-2));
  border: 1px solid var(--border); border-radius: var(--radius); overflow:hidden;
  display:flex; flex-direction:column; box-shadow: var(--shadow);
}
.post-card img{ width:100%; aspect-ratio: 16/9; object-fit: cover; background: var(--bg-alt); }
.post-card-body{ padding: 18px 20px; display:flex; flex-direction:column; gap:8px; flex:1; }
.post-date{ color: var(--text-muted); font-size:.78rem; }
.post-card h3{ margin:0; font-size:1.05rem; }
.post-card p{ color: var(--text-muted); font-size:.9rem; margin:0; flex:1; }
.post-empty{ color: var(--text-muted); padding: 40px 0; }

/* ---------- Post detail ---------- */
.post-detail{ padding-block: 60px; max-width: 780px; }
.post-detail h1{ font-size: clamp(1.6rem, 3vw, 2.3rem); margin: 10px 0 18px; }
.post-body{ color: var(--text); font-size: 1rem; line-height:1.75; }
.post-body p{ margin: 0 0 16px; }
.post-body img, .post-body video{ max-width:100%; border-radius: 10px; margin: 18px 0; }
.post-body table{ width:100%; border-collapse: collapse; margin: 18px 0; }
.post-body th, .post-body td{ border: 1px solid var(--border); padding: 8px 10px; text-align:left; }
.post-body blockquote{ border-left: 3px solid var(--accent); margin: 18px 0; padding: 4px 0 4px 16px; color: var(--text-muted); }
.post-body pre{ background: var(--surface); border:1px solid var(--border); border-radius:8px; padding: 12px; overflow-x:auto; }

.post-media-gallery{ display:grid; grid-template-columns: repeat(auto-fit, minmax(220px,1fr)); gap: 14px; margin: 24px 0; }
.post-media-gallery img, .post-media-gallery video{ width:100%; border-radius: 10px; border: 1px solid var(--border); }

.post-files{ margin: 26px 0; padding: 18px 20px; border:1px solid var(--border); border-radius: var(--radius); background: var(--surface); }
.post-files h2{ font-size: 1rem; margin: 0 0 12px; }
.post-files ul{ list-style:none; margin:0; padding:0; display:grid; gap:8px; }
.post-files a{ display:flex; align-items:center; gap:8px; font-weight:600; }
.post-files .file-meta{ color: var(--text-muted); font-weight:400; font-size:.82rem; }

/* ---------- Footer ---------- */
.site-footer{ border-top: 1px solid var(--border); padding-block: 26px; }
.footer-inner{
  display:flex; justify-content:space-between; align-items:center; gap:16px; flex-wrap:wrap;
  color: var(--text-muted); font-size:.82rem;
}
.footer-nav{ display:flex; gap: 18px; }
.footer-nav a{ color: var(--text-muted); }
.footer-nav a:hover{ color: var(--accent); }

/* ---------- Legal page ---------- */
.legal{ padding-block: 60px; max-width: 780px; }
.legal h1{ font-size: 1.8rem; margin-bottom: 24px; }
.legal h2{ font-size: 1.15rem; margin-top: 34px; color: var(--accent-2); }
.legal p, .legal li{ color: var(--text-muted); font-size: .95rem; }
.legal ol, .legal ul{ padding-left: 20px; }

/* ---------- 404 ---------- */
.notfound{ padding-block: 100px; text-align:center; }
.notfound h1{ font-size: 4rem; margin:0; color: var(--accent); }

/* ---------- Responsive ---------- */
@media (max-width: 900px){
  .advantages-inner, .contact-inner{ grid-template-columns: 1fr; }
}

@media (max-width: 760px){
  .main-nav{
    position:absolute; top:100%; left:0; right:0; flex-direction:column;
    background: var(--bg-alt); border-bottom:1px solid var(--border);
    padding: 16px 20px; gap:14px; display:none;
  }
  .main-nav.open{ display:flex; }
  .nav-toggle{ display:flex; }
  .header-actions .btn-ghost{ display:none; }
  .hero{ padding-block: 56px 40px; }
}

@media (max-width: 480px){
  .hero-stats{ gap: 22px; }
}

/* ---------- Solutions (готовые продукты) ---------- */
.solutions{ background: var(--bg-alt); border-block: 1px solid var(--border); }
.solution-card{ position: relative; border-color: color-mix(in srgb, var(--accent) 35%, var(--border)); }
.solution-badge{
  display:inline-block; margin-bottom:12px; padding:3px 10px; border-radius:999px;
  font-size:.72rem; font-weight:700; letter-spacing:.3px;
  color: var(--accent-contrast); background: var(--accent);
}
.solution-links{ display:flex; gap:10px; flex-wrap:wrap; margin-top:4px; }