/* Levam — новая главная (ТЗ 2026-07-18): тёмная enterprise-тема.
   Дизайн-система: automotive data infrastructure для AI-агентов. */

:root {
  --bg: #0a0e16;
  --bg-raise: #0f1420;
  --bg-card: #121927;
  --border: rgba(148, 163, 184, 0.14);
  --border-strong: rgba(148, 163, 184, 0.28);
  --text: #e6eaf2;
  --text-soft: #9aa7ba;
  --text-dim: #6b7789;
  --accent: #3b82f6;
  --accent-soft: #7dd3fc;
  --violet: #8b5cf6;
  --ok: #34d399;
  --warn: #f59e0b;
  --bad: #f87171;
  --radius: 14px;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body.home {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

body.home a { color: var(--accent-soft); text-decoration: none; }
body.home a:hover { color: #b8e6ff; }

img, svg { max-width: 100%; height: auto; }

.wrap { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

.section { padding: 88px 0; position: relative; scroll-margin-top: 80px; }

.section-alt { background: var(--bg-raise); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.kicker {
  display: inline-block;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 2.2px;
  text-transform: uppercase;
  color: var(--accent-soft);
  margin-bottom: 14px;
}

h1, h2, h3, h4 { font-weight: 700; letter-spacing: -0.015em; line-height: 1.2; margin: 0 0 16px; }

h1 { font-size: clamp(34px, 5.2vw, 58px); }
h2 { font-size: clamp(26px, 3.4vw, 38px); }
h3 { font-size: 20px; }
h4 { font-size: 17px; }

.lede { font-size: clamp(17px, 2vw, 20px); color: var(--text-soft); max-width: 46em; margin: 0 0 12px; }

p { color: var(--text-soft); }

.max-narrow { max-width: 760px; }

/* ---------- Кнопки ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.btn-primary { background: var(--accent); color: #fff !important; }
.btn-primary:hover { background: #2f6fd8; color: #fff !important; }

.btn-ghost { border-color: var(--border-strong); color: var(--text) !important; background: transparent; }
.btn-ghost:hover { border-color: var(--accent-soft); color: var(--accent-soft) !important; }

.btn-row { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }

/* ---------- Карточки и сетки ---------- */

.grid { display: grid; gap: 18px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
}

.card h3, .card h4 { margin-top: 0; }
.card p { margin-bottom: 0; font-size: 15px; }

.card .chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px; height: 38px;
  border-radius: 10px;
  background: rgba(59, 130, 246, 0.12);
  color: var(--accent-soft);
  margin-bottom: 14px;
  font-size: 17px;
}

/* ---------- Hero ---------- */

.hero {
  padding: 96px 0 80px;
  position: relative;
  overflow: hidden;
  scroll-margin-top: 80px;
}

.hero::before {
  content: "";
  position: absolute;
  inset: -40% -20% auto;
  height: 130%;
  background:
    radial-gradient(46% 55% at 22% 18%, rgba(59, 130, 246, 0.17), transparent 65%),
    radial-gradient(40% 48% at 82% 8%, rgba(139, 92, 246, 0.13), transparent 60%);
  pointer-events: none;
}

.hero .wrap { position: relative; }

.hero-grid { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 56px; align-items: center; }

.hero .trust {
  margin-top: 26px;
  font-size: 13.5px;
  color: var(--text-dim);
  letter-spacing: 0.2px;
}

/* Схема данных в hero */

.pipeline { display: flex; flex-direction: column; gap: 0; font-size: 13.5px; }

.pipe-node {
  border: 1px solid var(--border-strong);
  background: rgba(18, 25, 39, 0.85);
  border-radius: 10px;
  padding: 9px 14px;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 10px;
}

.pipe-node .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); flex: none; box-shadow: 0 0 8px rgba(59,130,246,.8); }

.pipe-node.engine {
  border-color: rgba(59, 130, 246, 0.55);
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.16), rgba(139, 92, 246, 0.13));
  font-weight: 600;
}

.pipe-link { width: 2px; height: 16px; margin-left: 24px; background: linear-gradient(var(--border-strong), rgba(59,130,246,.5)); }

/* Сравнение LLM alone / LLM + Levam */

.compare { margin-top: 22px; display: grid; gap: 10px; font-size: 13.5px; }

.compare .msg {
  border-radius: 10px;
  padding: 10px 14px;
  border: 1px solid var(--border);
  background: var(--bg-card);
}

.compare .who { font-size: 11.5px; text-transform: uppercase; letter-spacing: 1.2px; color: var(--text-dim); margin-bottom: 3px; }
.compare .msg.bad { border-color: rgba(248, 113, 113, 0.35); }
.compare .msg.bad .who { color: var(--bad); }
.compare .msg.good { border-color: rgba(52, 211, 153, 0.4); }
.compare .msg.good .who { color: var(--ok); }

/* ---------- Блок «Проблема»: сравнение потоков ---------- */

.flowline {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 14px;
  padding: 14px 18px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg-card);
}

.flowline .arrow { color: var(--text-dim); }
.flowline.generic .final { color: var(--bad); font-weight: 600; }
.flowline.levam .final { color: var(--ok); font-weight: 600; }
.flowline .tag { font-size: 11.5px; text-transform: uppercase; letter-spacing: 1.2px; color: var(--text-dim); margin-right: 6px; flex: none; }

/* ---------- Цепочка сущностей ---------- */

.chain {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-top: 26px;
  font-size: 13.5px;
}

.chain .node {
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  padding: 6px 14px;
  background: var(--bg-card);
  color: var(--text);
  white-space: nowrap;
}

.chain .sep { color: var(--accent); font-weight: 600; }

/* ---------- Код / JSON ---------- */

.codecard {
  background: #0b1220;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  overflow: hidden;
  font-size: 13px;
}

.codecard .codehead {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-dim);
  font-family: var(--mono);
  font-size: 12px;
}

.codecard .codehead .dots { display: flex; gap: 5px; }
.codecard .codehead .dots i { width: 9px; height: 9px; border-radius: 50%; background: var(--border-strong); }

.codecard pre {
  margin: 0;
  padding: 18px;
  overflow-x: auto;
  font-family: var(--mono);
  line-height: 1.55;
  color: #c7d2e5;
}

.codecard .k { color: #7dd3fc; }
.codecard .s { color: #a5f3a5; }
.codecard .n { color: #fbbf24; }

/* ---------- Шаги демонстрации ---------- */

.steps { counter-reset: step; display: flex; flex-direction: column; gap: 14px; }

.step { display: flex; gap: 16px; align-items: flex-start; }

.step::before {
  counter-increment: step;
  content: counter(step);
  flex: none;
  width: 30px; height: 30px;
  border-radius: 50%;
  border: 1px solid rgba(59, 130, 246, 0.55);
  color: var(--accent-soft);
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 600;
  margin-top: 2px;
}

.step h4 { margin: 0 0 4px; }
.step p { margin: 0; font-size: 14.5px; }

/* ---------- Масштаб ---------- */

.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; text-align: center; }

.stat .num {
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 700;
  background: linear-gradient(120deg, #7dd3fc, #8b5cf6);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.stat .lbl { color: var(--text-soft); font-size: 14px; margin-top: 4px; }

/* ---------- Pricing ---------- */

.plan { display: flex; flex-direction: column; }

.plan .price { font-size: 32px; font-weight: 700; color: var(--text); margin: 10px 0 2px; }
.plan .price span { font-size: 15px; font-weight: 400; color: var(--text-dim); }

.plan ul { list-style: none; margin: 16px 0 22px; padding: 0; }
.plan li { padding: 5px 0 5px 26px; position: relative; color: var(--text-soft); font-size: 14.5px; }
.plan li::before { content: "✓"; position: absolute; left: 0; color: var(--ok); font-weight: 600; }

.plan .btn { margin-top: auto; justify-content: center; }

.plan.featured { border-color: rgba(59, 130, 246, 0.5); box-shadow: 0 0 40px rgba(59, 130, 246, 0.08); }

.footnote { font-size: 13px; color: var(--text-dim); margin-top: 18px; }

/* ---------- Форма ---------- */

.lead-form { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }

.lead-form .full { grid-column: 1 / -1; }

.lead-form label { display: block; font-size: 13px; font-weight: 600; color: var(--text-soft); margin-bottom: 6px; }

.lead-form input,
.lead-form select,
.lead-form textarea {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: 9px;
  color: var(--text);
  font: inherit;
  font-size: 14.5px;
  padding: 11px 13px;
  transition: border-color 0.15s;
}

.lead-form input:focus,
.lead-form select:focus,
.lead-form textarea:focus { outline: none; border-color: var(--accent); }

.lead-form textarea { min-height: 100px; resize: vertical; }

.form-status { grid-column: 1 / -1; font-size: 14.5px; display: none; }
.form-status.ok { display: block; color: var(--ok); }
.form-status.err { display: block; color: var(--bad); }

/* ---------- Футер ---------- */

.site-footer-dark {
  border-top: 1px solid var(--border);
  padding: 36px 0;
  font-size: 14px;
  color: var(--text-dim);
}

.site-footer-dark .wrap { display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap; }

.site-footer-dark a { color: var(--text-soft); margin-right: 18px; }
.site-footer-dark a:hover { color: var(--text); }

.site-footer-dark .legal { width: 100%; margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--border); text-align: center; font-size: 13px; }

/* ---------- Анимации появления ---------- */

.reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.5s ease, transform 0.5s ease; }
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- Адаптив ---------- */

@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .stats { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .section { padding: 60px 0; }
  .hero { padding: 64px 0 56px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .lead-form { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
  .codecard pre { font-size: 12px; }
  .compare { font-size: 13px; }
}

/* Dark check bullets for secondary pages */
.card ul li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--ok);
  font-weight: 600;
}