/* ============================================================
   Devino Telecom — style.css
   ============================================================ */

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --clr-brand:   #0055D4;
  --clr-brand2:  #0040A8;
  --clr-accent:  #00C2FF;
  --clr-dark:    #0A1F44;
  --clr-text:    #1A2433;
  --clr-muted:   #6B7A92;
  --clr-light:   #F4F7FD;
  --clr-white:   #FFFFFF;
  --clr-border:  #DDE4EF;
  --radius:      12px;
  --shadow:      0 4px 24px rgba(0,85,212,.10);
  --transition:  .25s ease;
  --max-w:       1200px;
  --font:        'Montserrat', sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  font-size: 16px;
  color: var(--clr-text);
  background: var(--clr-white);
  line-height: 1.6;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { display: block; max-width: 100%; }

.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-family: var(--font);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--clr-brand);
  color: var(--clr-white);
}
.btn-primary:hover { background: var(--clr-brand2); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(0,85,212,.25); }
.btn-outline {
  background: transparent;
  color: var(--clr-brand);
  border: 2px solid var(--clr-brand);
}
.btn-outline:hover { background: var(--clr-brand); color: var(--clr-white); }
.btn-white {
  background: var(--clr-white);
  color: var(--clr-brand);
}
.btn-white:hover { background: var(--clr-light); }

/* ============================================================
   HEADER
   ============================================================ */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--clr-white);
  box-shadow: 0 2px 16px rgba(0,0,0,.07);
}
.header__inner {
  display: flex;
  align-items: center;
  gap: 40px;
  height: 72px;
}
.header__logo img { height: 36px; }

.nav { display: flex; align-items: center; gap: 8px; flex: 1; }
.nav__item { position: relative; }

.nav__link {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 14px 16px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--clr-text);
  transition: var(--transition);
}
.nav__link:hover, .nav__link.active { color: var(--clr-brand); background: var(--clr-light); }
.nav__link svg { width: 14px; height: 14px; transition: transform var(--transition); }
.nav__item:hover .nav__link svg { transform: rotate(180deg); }

/* Dropdown */
.dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 240px;
  background: var(--clr-white);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 8px 0;
  padding-top: 16px;   /* <-- это создаёт "мост" без зазора */
  z-index: 200;
}
.nav__item:hover .dropdown { display: block; }
.dropdown a {
  display: block;
  padding: 10px 20px;
  font-size: 14px;
  color: var(--clr-text);
  transition: var(--transition);
}
.dropdown a:hover { background: var(--clr-light); color: var(--clr-brand); }

.header__cta { margin-left: auto; }

/* Mobile burger */
.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  margin-left: auto;
  background: none;
  border: none;
  padding: 6px;
}
.burger span { display: block; width: 24px; height: 2px; background: var(--clr-dark); border-radius: 2px; transition: var(--transition); }

/* ============================================================
   HERO / SLIDER
   ============================================================ */
.hero {
  position: relative;
  background: linear-gradient(135deg, #0A1F44 0%, #0055D4 60%, #00C2FF 100%);
  color: var(--clr-white);
  overflow: hidden;
  min-height: 520px;
}
.hero__bg {
  position: absolute;
  inset: 0;
  background: url('https://www.devinotele.com/local/templates/devino/assets/media/BG.svg') center/cover no-repeat;
  opacity: .12;
}
.hero__slider { position: relative; z-index: 2; }
.hero__slide {
  display: none;
  padding: 80px 0;
  align-items: center;
  gap: 60px;
}
.hero__slide.active { display: flex; }
.hero__content { flex: 1; }
.hero__content h1 {
  font-size: clamp(28px, 3.5vw, 46px);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 36px;
}
.hero__btns { display: flex; gap: 16px; flex-wrap: wrap; }
.hero__image { flex: 0 0 380px; text-align: center; }
.hero__image img { max-height: 320px; margin: 0 auto; filter: drop-shadow(0 20px 40px rgba(0,0,0,.2)); }

/* Dots */
.hero__dots {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 3;
}
.dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,.4);
  cursor: pointer;
  transition: var(--transition);
  border: none;
}
.dot.active { background: var(--clr-white); width: 28px; border-radius: 5px; }

/* ============================================================
   ABOUT STRIP
   ============================================================ */
.about-strip { padding: 80px 0; }
.about-strip__inner { display: flex; align-items: center; gap: 80px; }
.about-strip__text { flex: 1; }
.about-strip__text h2 { font-size: 32px; font-weight: 700; color: var(--clr-brand); margin-bottom: 20px; line-height: 1.2; }
.about-strip__text p { color: var(--clr-muted); margin-bottom: 32px; line-height: 1.8; }
.about-strip__stats { display: flex; gap: 40px; margin-bottom: 36px; flex-wrap: wrap; }
.stat { }
.stat__num { font-size: 36px; font-weight: 800; color: var(--clr-brand); line-height: 1; }
.stat__label { font-size: 13px; color: var(--clr-muted); margin-top: 6px; max-width: 160px; line-height: 1.4; }
.about-strip__image { flex: 0 0 340px; text-align: center; }
.about-strip__image img { max-height: 280px; margin: 0 auto; }

/* ============================================================
   PRODUCTS
   ============================================================ */
.products { padding: 80px 0; background: var(--clr-light); }
.section-header { text-align: center; margin-bottom: 56px; }
.section-header h2 { font-size: 36px; font-weight: 700; color: var(--clr-dark); }
.section-header p { color: var(--clr-muted); margin-top: 12px; font-size: 16px; }

.products__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px;
}
.product-card {
  background: var(--clr-white);
  border-radius: var(--radius);
  padding: 32px 28px;
  border: 1px solid var(--clr-border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: var(--clr-brand); }
.product-card__icon { width: 56px; height: 56px; }
.product-card__icon img { width: 100%; height: 100%; object-fit: contain; }
.product-card h3 { font-size: 18px; font-weight: 700; color: var(--clr-dark); }
.product-card p { font-size: 14px; color: var(--clr-muted); line-height: 1.6; flex: 1; }
.product-card a { font-size: 14px; font-weight: 600; color: var(--clr-brand); display: inline-flex; align-items: center; gap: 6px; }
.product-card a:hover { text-decoration: underline; }

/* ============================================================
   ADVANTAGES
   ============================================================ */
.advantages { padding: 80px 0; }
.advantages__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.advantage-card {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 36px 32px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--clr-brand) 0%, #0077FF 100%);
  color: var(--clr-white);
  position: relative;
  overflow: hidden;
}
.advantage-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='200' height='200' viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='160' cy='40' r='80' fill='white' fill-opacity='0.06'/%3E%3C/svg%3E") right top no-repeat;
}
.advantage-card__icon { width: 64px; height: 64px; background: rgba(255,255,255,.15); border-radius: 50%; display: flex; align-items: center; justify-content: center; }
.advantage-card__icon img { width: 36px; height: 36px; filter: brightness(10); }
.advantage-card h3 { font-size: 20px; font-weight: 700; }
.advantage-card p { font-size: 14px; opacity: .88; line-height: 1.7; }
.advantages__cta { text-align: center; margin-top: 48px; }

/* ============================================================
   CTA FORM SECTION
   ============================================================ */
.cta-section {
  padding: 80px 0;
  background: linear-gradient(135deg, #0A1F44 0%, #0055D4 100%);
  color: var(--clr-white);
}
.cta-section__inner { display: flex; align-items: center; gap: 80px; }
.cta-section__text { flex: 1; }
.cta-section__text h2 { font-size: 30px; font-weight: 700; line-height: 1.3; margin-bottom: 16px; }
.cta-section__text p { opacity: .8; font-size: 15px; line-height: 1.8; }
.cta-section__image { flex: 0 0 280px; }
.cta-section__image img { max-height: 240px; margin: 0 auto; }
.cta-section__form { flex: 0 0 480px; background: var(--clr-white); border-radius: 16px; padding: 40px; color: var(--clr-text); }

.form-section h3 { font-size: 16px; font-weight: 700; color: var(--clr-dark); margin-bottom: 20px; padding-bottom: 12px; border-bottom: 1px solid var(--clr-border); }
.form-row { display: flex; gap: 16px; }
.form-group { flex: 1; margin-bottom: 16px; }
.form-group label { display: block; font-size: 12px; font-weight: 600; color: var(--clr-muted); margin-bottom: 6px; text-transform: uppercase; letter-spacing: .04em; }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--clr-border);
  border-radius: 8px;
  font-family: var(--font);
  font-size: 14px;
  color: var(--clr-text);
  background: var(--clr-white);
  transition: var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--clr-brand); box-shadow: 0 0 0 3px rgba(0,85,212,.12); }
.form-group textarea { resize: vertical; min-height: 80px; }
.form-check { display: flex; align-items: flex-start; gap: 10px; margin: 16px 0; font-size: 12px; color: var(--clr-muted); }
.form-check input[type=checkbox] { margin-top: 2px; accent-color: var(--clr-brand); }
.form-check a { color: var(--clr-brand); text-decoration: underline; }
.form-submit { width: 100%; padding: 14px; }
.form-section + .form-section { margin-top: 8px; }

/* ============================================================
   CASES
   ============================================================ */
.cases { padding: 80px 0; background: var(--clr-light); }
.cases__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.case-card {
  background: var(--clr-white);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--clr-border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.case-card__img { overflow: hidden; height: 200px; }
.case-card__img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.case-card:hover .case-card__img img { transform: scale(1.05); }
.case-card__body { padding: 24px; flex: 1; display: flex; flex-direction: column; gap: 16px; }
.case-card__body h3 { font-size: 15px; font-weight: 700; color: var(--clr-dark); line-height: 1.4; }
.case-card__body a { font-size: 14px; font-weight: 600; color: var(--clr-brand); margin-top: auto; display: inline-flex; align-items: center; gap: 6px; }
.cases__more { text-align: center; margin-top: 48px; }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--clr-dark);
  color: rgba(255,255,255,.7);
  padding: 60px 0 32px;
}
.footer__top {
  display: grid;
  grid-template-columns: 200px repeat(4, 1fr);
  gap: 40px;
  margin-bottom: 48px;
}
.footer__logo img { height: 32px; filter: brightness(10); margin-bottom: 24px; }
.footer__col h4 { font-size: 14px; font-weight: 700; color: var(--clr-white); margin-bottom: 20px; text-transform: uppercase; letter-spacing: .05em; }
.footer__col ul { display: flex; flex-direction: column; gap: 10px; }
.footer__col ul a { font-size: 14px; transition: var(--transition); }
.footer__col ul a:hover { color: var(--clr-white); }
.footer__col--contacts p { font-size: 14px; margin-bottom: 10px; }
.footer__socials { display: flex; gap: 12px; margin-top: 20px; }
.footer__socials a { width: 36px; height: 36px; border-radius: 50%; background: rgba(255,255,255,.1); display: flex; align-items: center; justify-content: center; transition: var(--transition); }
.footer__socials a:hover { background: var(--clr-brand); }
.footer__socials img { width: 18px; height: 18px; filter: brightness(10); }
.footer__bottom { border-top: 1px solid rgba(255,255,255,.1); padding-top: 24px; display: flex; justify-content: space-between; align-items: center; font-size: 13px; }
.footer__bottom a { color: rgba(255,255,255,.7); transition: var(--transition); }
.footer__bottom a:hover { color: var(--clr-white); }

/* ============================================================
   CONTACT MODAL
   ============================================================ */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(10,31,68,.6);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
  padding: 20px;
}
.modal-overlay.open { display: flex; }
.modal {
  background: var(--clr-white);
  border-radius: 20px;
  padding: 48px;
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
}
.modal__close {
  position: absolute;
  top: 20px; right: 20px;
  background: var(--clr-light);
  border: none;
  width: 36px; height: 36px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 20px;
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
}
.modal__close:hover { background: var(--clr-border); }
.modal h2 { font-size: 24px; font-weight: 700; color: var(--clr-dark); margin-bottom: 32px; }

/* ============================================================
   MOBILE NAV PANEL
   ============================================================ */
.mobile-nav {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: var(--clr-white);
  z-index: 500;
  overflow-y: auto;
  padding: 80px 24px 40px;
  flex-direction: column;
  gap: 4px;
}
.mobile-nav.open { display: flex; }
.mobile-nav a { font-size: 16px; font-weight: 600; padding: 12px 0; border-bottom: 1px solid var(--clr-border); color: var(--clr-dark); }
.mobile-nav a:hover { color: var(--clr-brand); }
.mobile-nav__close {
  position: absolute;
  top: 20px; right: 20px;
  background: none; border: none;
  font-size: 28px; cursor: pointer;
  color: var(--clr-dark);
}
.mobile-nav__section { font-size: 12px; font-weight: 700; color: var(--clr-muted); text-transform: uppercase; letter-spacing: .1em; margin: 20px 0 8px; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .footer__top { grid-template-columns: repeat(3, 1fr); }
  .footer__logo { grid-column: 1 / -1; }
  .advantages__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav, .header__cta { display: none; }
  .burger { display: flex; }

  .hero__slide { flex-direction: column; padding: 60px 0 80px; gap: 40px; }
  .hero__image { flex: unset; }
  .hero__image img { max-height: 200px; }

  .about-strip__inner { flex-direction: column; gap: 40px; }
  .about-strip__image { display: none; }

  .cta-section__inner { flex-direction: column; gap: 40px; }
  .cta-section__image { display: none; }
  .cta-section__form { flex: unset; width: 100%; padding: 28px; }
  .cta-section__text h2 { font-size: 24px; }

  .products__grid { grid-template-columns: 1fr 1fr; }
  .advantages__grid { grid-template-columns: 1fr; }
  .cases__grid { grid-template-columns: 1fr; }

  .footer__top { grid-template-columns: 1fr 1fr; gap: 28px; }
  .footer__bottom { flex-direction: column; gap: 12px; text-align: center; }

  .form-row { flex-direction: column; }
}

@media (max-width: 480px) {
  .products__grid { grid-template-columns: 1fr; }
  .about-strip__stats { gap: 24px; }
  .hero__content h1 { font-size: 26px; }
}