/* ===== Leads-ai.ru — публичный лендинг: красивый дизайн ===== */
:root {
  --bg: #0b1020;
  --bg-soft: #111735;
  --card: #151c3f;
  --border: #26305f;
  --text: #e8ecff;
  --muted: #9aa6d4;
  --accent: #6c7bff;
  --accent-2: #39d0c2;
  --danger: #ff5c7a;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Segoe UI', Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.container { max-width: 1120px; margin: 0 auto; padding: 0 20px; }

/* Шапка */
header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(11, 16, 32, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav { display: flex; align-items: center; justify-content: space-between; padding: 16px 0; }
.logo { font-size: 22px; font-weight: 700; color: var(--text); text-decoration: none; }
.logo span { color: var(--accent-2); }
.nav-links { display: flex; gap: 26px; align-items: center; }
.nav-links a { color: var(--muted); text-decoration: none; font-size: 15px; transition: color .2s; }
.nav-links a:hover { color: var(--text); }
.btn {
  display: inline-block; background: var(--accent); color: #fff; padding: 12px 26px;
  border-radius: 10px; text-decoration: none; font-weight: 600; transition: transform .15s, background .2s;
  cursor: pointer; border: none; font-size: 15px; font-family: inherit;
}
.btn:hover { background: #5b6bff; transform: translateY(-2px); }
.btn-outline { background: transparent; border: 1.5px solid var(--accent); color: var(--accent); }
.btn-outline:hover { background: var(--accent); color: #fff; }
.btn-block { width: 100%; text-align: center; }

/* Герой */
.hero { padding: 90px 0 70px; text-align: center; position: relative; overflow: hidden; }
.hero::before {
  content: ''; position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(600px 300px at 20% 20%, rgba(57,208,194,.15), transparent 60%),
    radial-gradient(600px 300px at 80% 40%, rgba(124,123,255,.18), transparent 60%);
}
.hero .container { position: relative; z-index: 1; }
.hero h1 { font-size: 52px; line-height: 1.15; font-weight: 800; margin-bottom: 20px; }
.hero h1 span { color: var(--accent-2); }
.hero .subtitle { font-size: 20px; color: var(--muted); max-width: 720px; margin: 0 auto 34px; }
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.hero-tag {
  display: inline-block; margin-top: 26px; padding: 8px 18px; border-radius: 30px;
  border: 1px solid var(--border); color: var(--muted); font-size: 14px; background: var(--bg-soft);
}

/* Секции */
section { padding: 70px 0; }
.section-title { font-size: 36px; font-weight: 800; margin-bottom: 14px; }
.section-desc { color: var(--muted); font-size: 17px; max-width: 640px; margin-bottom: 40px; }
.center { text-align: center; }
.center .section-desc { margin-left: auto; margin-right: auto; }

/* Карточки услуг */
.grid { display: grid; gap: 24px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: 16px;
  padding: 28px; transition: transform .2s, border-color .2s;
}
.card:hover { transform: translateY(-5px); border-color: var(--accent); }
.card .icon { font-size: 34px; margin-bottom: 16px; }
.card h3 { font-size: 20px; margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 15px; }

/* Как работаем */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.step { text-align: center; padding: 26px 18px; background: var(--bg-soft); border-radius: 16px; border: 1px solid var(--border); }
.step .num { width: 44px; height: 44px; margin: 0 auto 14px; display: flex; align-items: center; justify-content: center; font-weight: 800; border-radius: 50%; background: var(--accent); color: #fff; }
.step h4 { margin-bottom: 8px; font-size: 17px; }
.step p { color: var(--muted); font-size: 14px; }

/* Тарифы */
.plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; align-items: start; }
.plan { background: var(--card); border: 1px solid var(--border); border-radius: 18px; padding: 30px; position: relative; }
.plan.featured { border-color: var(--accent-2); box-shadow: 0 0 30px rgba(57,208,194,.15); }
.plan .badge {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: var(--accent-2); color: #041a17; font-size: 13px; font-weight: 700; padding: 5px 14px; border-radius: 30px;
}
.plan h3 { font-size: 19px; margin-bottom: 6px; }
.plan .price { font-size: 34px; font-weight: 800; margin-bottom: 16px; }
.plan ul { list-style: none; margin-bottom: 24px; }
.plan li { padding: 8px 0 8px 28px; position: relative; color: var(--muted); font-size: 15px; border-bottom: 1px dashed var(--border); }
.plan li::before { content: '✓'; position: absolute; left: 0; color: var(--accent-2); font-weight: 700; }

/* Формы заказа внутри карточки тарифа */
.plan .pay-line { margin: 10px 0 6px; }
.plan .pay-label { font-size: 13px; color: var(--muted); margin-bottom: 8px; }
.plan .pay-form { display: grid; gap: 10px; }
.plan .pay-form input[type=email],
.plan .pay-form input[type=text] {
  width: 100%; padding: 11px 13px; border-radius: 10px; border: 1px solid var(--border);
  background: #0e1430; color: var(--text); font-size: 14px; font-family: inherit; outline: none;
}
.plan .pay-form input:focus { border-color: var(--accent); }
.plan .divider { display: flex; align-items: center; gap: 10px; margin: 16px 0 10px; }
.plan .divider span { flex: 1; height: 1px; background: var(--border); }
.plan .divider em { font-style: normal; font-size: 12px; color: var(--muted); }
.plan details { margin-top: 4px; }
.plan summary { cursor: pointer; color: var(--accent-2); font-size: 14px; font-weight: 600; }
.plan .invoice-box { margin-top: 10px; }

/* FAQ */
.faq-item { background: var(--bg-soft); border: 1px solid var(--border); border-radius: 14px; padding: 22px 24px; margin-bottom: 14px; }
.faq-item h4 { margin-bottom: 8px; font-size: 17px; }
.faq-item p { color: var(--muted); font-size: 15px; }

/* CTA */
.cta { background: linear-gradient(135deg, var(--accent), var(--accent-2)); border-radius: 20px; padding: 56px 40px; text-align: center; }
.cta h2 { font-size: 34px; color: #04101f; margin-bottom: 12px; }
.cta p { color: #14323d; font-size: 17px; margin-bottom: 26px; }
.cta .btn { background: #04101f; color: #fff; }
.cta .btn:hover { background: #0a1a30; }

/* Форма заявки */
.lead-form { max-width: 520px; margin: 0 auto; text-align: left; background: rgba(4, 16, 31, 0.35); border: 1px solid rgba(255,255,255,.25); border-radius: 16px; padding: 28px; display: grid; gap: 14px; }
.lead-form input, .lead-form select, .lead-form textarea {
  width: 100%; padding: 13px 16px; border-radius: 10px; border: 1px solid rgba(255,255,255,.35);
  background: rgba(255,255,255,.92); color: #0b1020; font-size: 15px; font-family: inherit; outline: none;
}
.lead-form input:focus, .lead-form select:focus, .lead-form textarea:focus { border-color: #04101f; }
.lead-form textarea { resize: vertical; }
.lead-form .btn { width: 100%; text-align: center; cursor: pointer; border: none; }
.form-note { font-size: 12px; color: #14323d; text-align: center; margin: 0; }

/* Блог */
.post-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.post-card { background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 26px; transition: transform .2s; }
.post-card:hover { transform: translateY(-4px); }
.post-card .cat { color: var(--accent-2); font-size: 13px; text-transform: uppercase; letter-spacing: .5px; }
.post-card h3 { font-size: 20px; margin: 10px 0; }
.post-card h3 a { color: var(--text); text-decoration: none; }
.post-card h3 a:hover { color: var(--accent-2); }
.post-card p { color: var(--muted); font-size: 15px; }
.post-card .date { color: var(--muted); font-size: 13px; margin-top: 14px; display: block; }

/* Статья в блоге */
.post-card .cat { color: var(--accent-2); font-size: 13px; text-transform: uppercase; letter-spacing: .5px; }
.article { max-width: 780px; margin: 0 auto; }
.article .cat { color: var(--accent-2); font-size: 14px; text-transform: uppercase; letter-spacing: .5px; }
.article h1 { font-size: 38px; line-height: 1.2; margin: 14px 0 10px; }
.article .date { color: var(--muted); font-size: 14px; margin-bottom: 30px; display: block; }
.article h2 { font-size: 26px; margin: 34px 0 14px; color: var(--text); }
.article p { color: var(--muted); font-size: 17px; margin-bottom: 18px; }
.article ul, .article ol { margin: 0 0 18px 24px; color: var(--muted); font-size: 17px; }
.article li { margin-bottom: 8px; }
.article a { color: var(--accent-2); }
.article blockquote { border-left: 3px solid var(--accent-2); padding: 6px 20px; margin: 24px 0; color: var(--text); font-style: italic; background: var(--bg-soft); border-radius: 0 10px 10px 0; }
.back-link { display: inline-block; margin: 30px 0 10px; color: var(--accent-2); text-decoration: none; font-size: 15px; }
.back-link:hover { text-decoration: underline; }

/* Кейсы */
.cases-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-card { background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 26px; transition: transform .2s, border-color .2s; }
.case-card:hover { transform: translateY(-5px); border-color: var(--accent); }
.case-head { display: flex; gap: 14px; align-items: center; margin-bottom: 18px; }
.case-logo { width: 52px; height: 52px; border-radius: 14px; display: flex; align-items: center; justify-content: center; font-size: 20px; font-weight: 800; color: #fff; flex-shrink: 0; }
.case-head h3 { font-size: 19px; margin-bottom: 2px; }
.case-cat { color: var(--muted); font-size: 13px; }
.case-results { list-style: none; margin-bottom: 14px; }
.case-results li { padding: 7px 0 7px 26px; position: relative; color: var(--muted); font-size: 14px; border-bottom: 1px dashed var(--border); }
.case-results li::before { content: '📈'; position: absolute; left: 0; }
.case-results b { color: var(--text); }
.case-note { color: var(--muted); font-size: 14px; }

/* Направления */
.dir-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.dir-item { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 18px 22px; font-size: 16px; font-weight: 600; text-align: center; transition: transform .2s, border-color .2s, color .2s; }
.dir-item:hover { transform: translateY(-3px); border-color: var(--accent); color: var(--accent-2); }

/* Отзывы */
.reviews-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.review-card { background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 26px; display: flex; flex-direction: column; gap: 14px; }
.review-head { display: flex; gap: 14px; align-items: center; }
.avatar { width: 48px; height: 48px; border-radius: 50%; background: linear-gradient(135deg, var(--accent), var(--accent-2)); display: flex; align-items: center; justify-content: center; font-weight: 800; color: #04101f; flex-shrink: 0; }
.review-head h4 { font-size: 16px; }
.review-role { color: var(--muted); font-size: 13px; }
.review-card p { color: var(--muted); font-size: 15px; flex: 1; }
.stars { color: #ffc94d; letter-spacing: 2px; font-size: 15px; }

/* Наши цифры */
.numbers-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
.number-item { background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 30px 16px; }
.number { font-size: 44px; font-weight: 800; background: linear-gradient(135deg, var(--accent), var(--accent-2)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; margin-bottom: 8px; }
.number-label { color: var(--muted); font-size: 15px; }

/* Подвал */
footer { border-top: 1px solid var(--border); padding: 44px 0 0; margin-top: 40px; background: var(--bg-soft); }
.footer-grid { display: flex; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.footer-grid h4 { margin-bottom: 12px; font-size: 15px; }
.footer-grid a { display: block; color: var(--muted); text-decoration: none; margin-bottom: 8px; font-size: 14px; }
.footer-grid a:hover { color: var(--text); }
.footer-req { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 16px 18px; font-size: 13px; color: var(--muted); line-height: 1.9; margin-bottom: 6px; max-width: 360px; }
.footer-req b { color: var(--text); font-weight: 600; }
.footer-bottom { text-align: center; color: var(--muted); font-size: 13px; margin-top: 26px; padding: 18px 0; border-top: 1px solid var(--border); }
.footer-bottom a { color: var(--accent-2); text-decoration: none; }

/* Flash-сообщения */
.flash { padding: 14px 18px; border-radius: 12px; margin: 18px auto; max-width: 1120px; font-size: 15px; }
.flash-ok { background: rgba(57,208,194,.12); border: 1px solid var(--accent-2); color: var(--accent-2); }
.flash-err { background: rgba(255,92,122,.12); border: 1px solid #ff5c7a; color: #ff8aa0; }

/* Политика конфиденциальности */
.legal { max-width: 820px; margin: 0 auto; }
.legal h1 { font-size: 34px; margin-bottom: 10px; }
.legal .meta { color: var(--muted); font-size: 14px; margin-bottom: 30px; }
.legal h2 { font-size: 22px; margin: 30px 0 12px; }
.legal h3 { font-size: 17px; margin: 20px 0 8px; }
.legal p, .legal li { color: var(--muted); font-size: 16px; margin-bottom: 12px; }
.legal ul, .legal ol { margin: 0 0 16px 24px; }
.legal table { width: 100%; border-collapse: collapse; font-size: 14px; margin: 14px 0; }
.legal table th, .legal table td { border: 1px solid var(--border); padding: 10px 12px; text-align: left; }
.legal table th { background: var(--bg-soft); color: var(--muted); }

@media (max-width: 900px) {
  .grid-3, .grid-2, .plans, .steps, .post-list, .cases-grid, .dir-grid, .reviews-grid, .numbers-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 38px; }
  .nav-links { display: none; }
}