/* ===== ТВиИНТЕРНЕТ — основные стили ===== */
:root {
  --primary: #0057b8;       /* фирменный синий */
  --primary-dark: #003d80;
  --accent: #ff8a00;        /* оранжевый акцент */
  --text: #1f2937;
  --muted: #6b7280;
  --bg: #ffffff;
  --bg-soft: #f3f6fb;
  --border: #e5e7eb;
  --radius: 12px;
  --shadow: 0 4px 20px rgba(0,0,0,.08);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}
img { max-width: 100%; }
.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 20px;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ===== Шапка ===== */
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  padding-top: 14px;
  padding-bottom: 14px;
}
.logo {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.1;
  display: flex;
  flex-direction: column;
}
.logo-sub { font-size: 11px; font-weight: 500; color: var(--muted); }
.nav { display: flex; gap: 18px; }
.nav a { color: var(--text); font-weight: 500; padding: 6px 2px; }
.nav a:hover { color: var(--primary); text-decoration: none; }
.nav a.active { color: var(--primary); box-shadow: 0 2px 0 var(--primary); }
.header-side { margin-left: auto; display: flex; align-items: center; gap: 16px; }
.btn-city {
  font-weight: 600; color: var(--primary); border: 1px solid var(--primary);
  border-radius: 8px; padding: 7px 14px;
}
.btn-city:hover { background: var(--primary); color: #fff; text-decoration: none; }
.btn-pay, .btn-lk { font-weight: 500; color: var(--text); font-size: 14px; }
.nav-toggle {
  display: none; background: none; border: 1px solid var(--border);
  border-radius: 6px; font-size: 20px; padding: 6px 10px; cursor: pointer; margin-left: auto;
}

/* ===== Кнопки ===== */
.btn {
  display: inline-block;
  background: var(--primary);
  color: #fff !important;
  padding: 12px 26px;
  border-radius: 8px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  text-decoration: none !important;
  transition: background .2s;
}
.btn:hover { background: var(--primary-dark); }
.btn-secondary { background: var(--bg-soft); color: var(--primary) !important; border: 1px solid var(--primary); }
.btn-secondary:hover { background: var(--accent); color: #fff !important; border-color: var(--accent); }

/* ===== Hero ===== */
.hero {
  background: linear-gradient(135deg, var(--primary) 0%, #0070d2 60%, #0aa2d8 100%);
  color: #fff;
  padding: 64px 0;
  text-align: center;
}
.hero h1 { font-size: clamp(26px, 4vw, 42px); margin: 0 0 14px; }
.hero-sub { font-size: 18px; opacity: .92; max-width: 720px; margin: 0 auto 24px; }
.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ===== Секции ===== */
.section { padding: 56px 0; }
.section-title { font-size: 28px; text-align: center; margin: 0 0 32px; }
.section h2 { font-size: 26px; }

/* Сегменты (главная) */
.segments { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.segment {
  background: var(--bg-soft); border-radius: var(--radius); padding: 28px;
  text-align: center; color: var(--text); transition: transform .2s, box-shadow .2s;
}
.segment:hover { transform: translateY(-4px); box-shadow: var(--shadow); text-decoration: none; }
.segment-icon { font-size: 40px; margin-bottom: 10px; }
.segment h3 { margin: 0 0 6px; }

/* Преимущества */
.advantages { background: var(--bg-soft); }
.advantages-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.advantage { background: #fff; border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); }
.advantage-icon {
  width: 40px; height: 40px; border-radius: 50%; background: var(--primary);
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-weight: 700; margin-bottom: 12px;
}

/* Тарифные карточки */
.tariff-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 20px; }
.tariff-card {
  border: 1px solid var(--border); border-radius: var(--radius); padding: 24px;
  display: flex; flex-direction: column; background: #fff;
}
.tariff-card.popular { border-color: var(--accent); box-shadow: var(--shadow); }
.tariff-card h3 { margin: 0 0 8px; font-size: 18px; }
.tariff-price { font-size: 28px; font-weight: 800; color: var(--primary); margin-bottom: 14px; }
.tariff-price small { font-size: 14px; font-weight: 400; color: var(--muted); }
.tariff-price del { color: var(--muted); font-size: 16px; font-weight: 400; margin-right: 6px; }
.tariff-card ul { margin: 0 0 18px; padding-left: 20px; color: var(--muted); flex: 1; }
.tariff-card li { margin-bottom: 6px; }

/* Калькулятор */
.calculator { background: var(--bg-soft); border-radius: var(--radius); padding: 28px; }
.calc-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin: 20px 0; }
.calc-item {
  display: flex; align-items: center; gap: 10px; background: #fff;
  border: 1px solid var(--border); border-radius: 8px; padding: 14px 16px; cursor: pointer;
}
.calc-item:has(input:checked) { border-color: var(--primary); background: #eef5ff; }
.calc-item input { width: 18px; height: 18px; }
.calc-price { margin-left: auto; font-weight: 600; color: var(--primary); white-space: nowrap; }
.calc-total { font-size: 20px; font-weight: 700; }
.calc-total-value { color: var(--primary); }

/* CTA / формы */
.cta { background: var(--primary); color: #fff; text-align: center; }
.cta h2 { margin: 0 0 8px; }
.cta p { opacity: .9; margin: 0 0 18px; }
.form { display: flex; flex-direction: column; gap: 12px; max-width: 460px; margin: 0 auto; }
.form input, .form textarea, .form select {
  padding: 12px 14px; border: 1px solid var(--border); border-radius: 8px; font-size: 16px; width: 100%;
}
.form .btn { margin-top: 4px; }
.form-note { font-size: 12px; opacity: .8; margin-top: 10px; }

/* Новости */
.news-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; }
.news-card { border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; }
.news-card time { color: var(--muted); font-size: 13px; }
.news-card h2 { font-size: 20px; margin: 8px 0; }
.news-card h2 a { color: var(--text); }
.link-more { font-weight: 600; }

.article { max-width: 800px; }
.article-body { font-size: 17px; }
.article-body p { margin: 0 0 16px; }

.page-content { padding: 48px 20px; max-width: 1180px; margin: 0 auto; }

/* ===== Контакты ===== */
.contacts-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
.contact-info p { margin: 0 0 10px; }

/* ===== Футер ===== */
.site-footer { background: #0d1420; color: #cbd5e1; padding: 48px 0 24px; margin-top: 40px; }
.footer-inner { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-bottom: 24px; }
.footer-col { display: flex; flex-direction: column; gap: 8px; }
.footer-col strong { color: #fff; }
.footer-col a { color: #cbd5e1; }
.footer-col a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid #1f2937; padding-top: 18px;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; font-size: 13px; opacity: .8;
}

/* ===== Модальное окно ===== */
.modal { display: none; position: fixed; inset: 0; z-index: 200; }
.modal.open { display: block; }
.modal-overlay { position: absolute; inset: 0; background: rgba(0,0,0,.5); }
.modal-box {
  position: relative; background: #fff; max-width: 520px; margin: 8vh auto; padding: 28px;
  border-radius: 12px; max-height: 80vh; overflow-y: auto; box-shadow: 0 20px 60px rgba(0,0,0,.3);
}
.modal-close { position: absolute; top: 12px; right: 16px; font-size: 26px; background: none; border: none; cursor: pointer; }
.city-group { margin-bottom: 18px; }
.city-group h4 { margin: 0 0 8px; color: var(--muted); text-transform: uppercase; font-size: 13px; }
.city-chip {
  display: inline-block; margin: 4px; padding: 6px 14px; border: 1px solid var(--border);
  border-radius: 20px; font-size: 14px; color: var(--text);
}
.city-chip:hover { border-color: var(--primary); color: var(--primary); text-decoration: none; }
body.no-scroll { overflow: hidden; }

/* ===== Адаптив ===== */
@media (max-width: 960px) {
  .segments, .advantages-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .nav-toggle { display: block; }
  .nav {
    display: none; position: absolute; top: 100%; left: 0; right: 0; background: #fff;
    flex-direction: column; padding: 10px 20px; border-bottom: 1px solid var(--border);
  }
  .nav.open { display: flex; }
  .header-inner { flex-wrap: wrap; }
  .btn-pay, .btn-lk { display: none; }
  .segments, .advantages-grid, .calc-grid, .contacts-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .hero { padding: 40px 0; }
  .section { padding: 36px 0; }
}