/*основные*/
  * { box-sizing: border-box; margin: 0; padding: 0; }
  html, body { height: 100%; }
  body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: #ccc;
    min-height: 100vh;
    background: linear-gradient(135deg, #222, #111);
    background-attachment: fixed;
    background-size: cover;
    overflow-x: hidden;
    position: relative;
  }
  #particles-js {
    position: fixed; top: 0; left: 0; right: 0; bottom: 0;
    z-index: 0;
  }
  a { text-decoration: none; color: inherit; }

  header {
    position: fixed; top: 0; width: 100%; background: rgba(20,20,20,0.8);
    padding: 10px calc(10px + env(safe-area-inset-left));
    display: flex; justify-content: space-between; align-items: center; z-index: 999;
    transition: top 0.4s ease, backdrop-filter 0.4s ease;
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
  }
  header.hidden { top: -100px; }
  .logo { font-size: 1.8rem; font-weight: 700; color: #ff7f00; letter-spacing: 2px; }

  nav {
    display: flex; gap: 15px; flex-wrap: nowrap;
  }
  nav a {
    font-weight: 600; font-size: 0.9rem; padding: 8px 12px; border-radius: 3px; transition: background-color 0.3s ease;
  }
  nav a:hover { background-color: rgba(255, 127, 0, 0.2); }

  section.hero {
    padding: 80px 20px;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    height: calc(100vh - 80px);
    text-align: center;
  }
  section.hero h1 {
    font-size: 3rem; margin-bottom: 20px; color: #ffa64d; font-weight: 700; display: flex; align-items: center; justify-content: center; flex-wrap: wrap;
  }
  section.hero h1 i {
    font-size: 4rem; margin-right: 15px; color: #ff7f00; animation: pulse 2s infinite;
  }
  section.hero p {
    font-size: 1.2rem; max-width: 700px; margin-bottom: 40px; color: #ccc; line-height: 1.5;
  }
  section.hero a.btn {
    padding: 14px 40px; font-size: 1.2rem; background-color: #ff7f00; color: #222; border-radius: 50px; text-decoration: none; display: inline-block; pointer-events: auto;
    transition: background-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease; z-index: 10;
  }
  section.hero a.btn:hover { background-color: #e66e00; transform: scale(1.05); box-shadow: 0 0 15px #ff7f00; }
  @keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
  }
/*сервисы и тарифы*/
.service-box, .tariff-card {
  background: #222;
  padding: 20px;
  border-radius: 15px;
  flex: 1 1 250px;
  min-width: 250px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.6);
  transition: transform 0.3s, box-shadow 0.3s, background-color 0.3s;
}
.service-box:hover, .tariff-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.8);
}
h3 {
  text-align: center;
  margin-bottom: 15px;
  font-size: 1.4rem;
}
ul {
  list-style: none;
  padding: 0;
  margin-bottom: 20px;
}
li {
  margin-bottom: 10px;
  font-size: 1rem;
  display: flex;
  align-items: center;
}
li i {
  color: #00ffff;
  margin-right: 10px;
}

  hr.section-divider {
    width: 80%; max-width: 1000px; margin: 40px auto; border: none; height: 2px; background: linear-gradient(to right, transparent, #555, transparent);
  }

  section#advantages {
    padding: 60px 20px;
  }
  section#advantages h2 {
    text-align: center; margin-bottom: 40px; font-size: 2.5rem; color: #ff7f00; text-shadow: 0 0 10px #ff7f00;
  }
  .advantages-container {
    display: flex; flex-wrap: wrap; justify-content: center; gap: 30px;
  }
  .advantage {
    background-color: rgba(255,255,255,0.05);
    padding: 30px; border-radius: 15px; max-width: 280px; flex: 1 1 250px; box-shadow: 0 4px 15px rgba(0,0,0,0.6);
    transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease;
    text-align: center; display: flex; flex-direction: column; align-items: center; z-index: 10;
  }
  .advantage:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.8);
    background-color: rgba(255, 127, 0, 0.2);
  }
  .advantage i { font-size: 2.5rem; margin-bottom: 15px; color: #ff7f00; }
  .advantage h3 { margin-bottom: 10px; font-size: 1.4rem; color: #fff; }
  .advantage p { font-size: 1rem; color: #ccc; }

section#partners {
  padding: 60px 20px;
}
section#partners h2 {
  text-align: center; margin-bottom: 40px; font-size: 2.5rem; color: #ff7f00; text-shadow: 0 0 10px #ff7f00;
}
.partners-grid {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 30px;
}
.partner {
  width: 120px; height: 120px; background-color: #333; display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; color: #fff; border-radius: 10px; box-shadow: 0 2px 8px rgba(0,0,0,0.4);
  transition: transform 0.3s ease; z-index: 10;
}
.partner:hover { transform: scale(1.05); }
/*подвал*/
#footer{
  background-color: #0d0d0d;
  padding: 60px 40px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  color: #aaa;
}
#footer h2 {
  color: #ff7f00;
  font-size: 2rem;
  margin-bottom: 15px;
}
.footer-columns {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  z-index: 20;
}
.footer-column {
  flex: 1 1 250px;
  z-index: 20;
}
.footer-column h3 {
  margin-bottom: 10px;
  color: #fff;
}
.footer-column ul {
  list-style: none;
  padding: 0;
}
.footer-column li {
  margin-bottom: 8px;
  font-size: 1rem;
}
.footer-logo img {
  max-width: 150px;
  height: 10px;
  
  display: block;
  margin: 0 auto; 
}



/*тарифы*/
section.tariffs {
  padding: 60px 20px;
  background-color: rgba(0,0,0,0.05);
}
section.tariffs h1 {
  font-size: 2.5rem;
  color: #ff7f00;
  text-align: center;
  margin-bottom: 40px;
  text-shadow: 0 0 10px #ff7f00;
}
.tariffs-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 30px;
}
.tariff-card {
  background-color: rgba(255,255,255,0.1);
  padding: 30px;
  border-radius: 15px;
  max-width: 280px;
  flex: 1 1 250px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.6);
  transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease, z-index 0.3s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  z-index: 20;
}
.tariff-card:hover {
  transform: translateY(-15px) scale(1.05);
  box-shadow: 0 12px 36px rgba(0,0,0,0.9);
  background-color: rgba(255, 127, 0, 0.2);
  z-index: 20;
}
.tariff-title {
  font-size: 1.8rem;
  margin-bottom: 15px;
  color: #fff;
}
.tariff-price {
  font-size: 2rem;
  margin-bottom: 20px;
  color: #ff7f00;
}
.tariff-features {
  list-style: none;
  padding: 0;
  margin-bottom: 30px;
  width: 100%;
}
.tariff-features li {
  display: flex;
  align-items: center;
  margin-bottom: 10px;
  font-size: 1rem;
  color: #ccc;
}
.tariff-features li i {
  margin-right: 10px;
  color: #00ffcc;
}
/*кнопки*/
.btn {
  padding: 14px 30px;
  font-size: 1.2rem;
  background-color: #ff7f00;
  color: #222;
  border-radius: 50px;
  text-decoration: none;
  transition: background-color 0.3s ease, transform 0.3s ease;
}
.btn:hover {
  background-color: #e66e00;
  transform: scale(1.05);
}
/*сервисы*/

#services {
  padding: 50px 20px;
  background-color: #111;
  color: #fff;
}

#services h2 {
  text-align: center;
  margin-bottom: 40px;
  font-size: 2rem;
  color: #ff7f00;
  text-shadow: 0 0 10px #ff7f00;
}

.services-container {
  display: flex;
  flex-wrap: wrap;
  gap: 30px;
  justify-content: center;
}

.service-box {
  background: linear-gradient(135deg, #222, #333);
  padding: 30px;
  border-radius: 15px;
  max-width: 600px;
  width: 100%;
  box-shadow: 0 4px 15px rgba(0,0,0,0.6);
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.service-box:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 20px rgba(0,0,0,0.8);
}

.service-box h3 {
  text-align: center;
  margin-bottom: 20px;
  font-size: 1.6rem;
  color: #fff;
}

.service-box ul {
  list-style: none;
  padding: 0;
  margin-bottom: 20px;
}

.service-box li {
  display: flex;
  align-items: center;
  margin-bottom: 10px;
  font-size: 1rem;
  color: #ccc;
}

.service-box li i {
  color: #00ffff;
  margin-right: 10px;
}

.service-box a {
  display: inline-block;
  padding: 10px 20px;
  background: linear-gradient(135deg, #ff7f00, #ff4e00);
  border-radius: 50px;
  color: #222;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
}

.service-box a:hover {
  background: linear-gradient(135deg, #ff4e00, #ff7f00);
  transform: scale(1.05);
}

/*контакты*/

#contacts{
  padding: 50px 20px;
  background-color: #111;
  color: #fff;
}

#contacts h2 {
  text-align: center;
  margin-bottom: 30px;
  font-size: 2rem;
  color: #ff7f00;
  text-shadow: 0 0 10px #ff7f00;
}

.contacts-container {
  display: flex;
  flex-wrap: wrap;
  gap: 30px;
  justify-content: center;
}

.contact-box {
  background: #222;
  padding: 20px;
  border-radius: 10px;
  max-width: 500px;
  width: 100%;
  box-shadow: 0 4px 10px rgba(0,0,0,0.6);
}

.contact-box h3 {
  margin-bottom: 15px;
  text-align: center;
  font-size: 1.6rem;
}

.contact-box p {
  text-align: center;
  font-size: 1rem;
  line-height: 1.5;
}

.contact-box ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.contact-box li {
  display: flex;
  align-items: center;
  margin-bottom: 10px;
  font-size: 1rem;
}

.contact-box li i {
  margin-right: 10px;
  color: #00ffff;
}

/*страница контактов*/
.documents-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 600px;
  margin: 0 auto;
}
.doc-link {
  display: flex;
  align-items: center;
  padding: 15px;
  background: rgba(255,255,255,0.1);
  border-radius: 10px;
  text-decoration: none;
  color: #fff;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.doc-link:hover {
  background: rgba(255,255,255,0.2);
  box-shadow: 0 4px 20px rgba(0,0,0,0.6);
  transform: translateY(-3px);
}
.doc-link i {
  margin-right: 15px;
  font-size: 1.5rem;
  color: #00ffff;
}
