:root {
  --primary: #2c3e50;
  --secondary: #3a7bd5;
  --accent: #00d2ff;
  --dark: #2c2c2c;
  --light: #f8f9fa;
  --success: #3CB371;
  --text: #333;
  --text-light: #777;
  --white: #ffffff;
  --gray: #e0e0e0;
  --shadow: 0 4px 12px rgba(0,0,0,0.1);
  --transition: all 0.3s ease;
}

/* Базовые стили */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
main {
  flex: 1;
  padding: 40px 0;
}

body {
  font-family: 'Roboto', Arial, sans-serif;
  line-height: 1.6;
  color: var(--text);
  background-color: var(--light);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Шапка */
.main-header {
  background-color: var(--dark);
  color: var(--white);
  padding: 25px 0;
  text-align: center;
  box-shadow: var(--shadow);
  position: relative;
}

.logo {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--white);
  text-decoration: none;
  transition: var(--transition);
  display: inline-block;
  margin-bottom: 10px;
}

.logo:hover {
  color: var(--accent);
}

.tagline {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.8);
  margin-top: 10px;
}

/* Навигация */
.main-nav {
  background-color: var(--primary);
  padding: 15px 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.main-nav ul {
  display: flex;
  justify-content: center;
  list-style: none;
  gap: 30px;
  flex-wrap: wrap;
  margin: 0;
  padding: 0;
}

.main-nav a {
  color: var(--white);
  text-decoration: none;
  font-weight: 500;
  padding: 8px 15px;
  border-radius: 4px;
  transition: var(--transition);
  font-size: 1.05rem;
}

.main-nav a:hover, 
.main-nav a.active {
  background-color: var(--accent);
  color: var(--dark);
}

/* Основное содержимое */
main {
  flex: 1;
  padding: 40px 0;
}

/* hero-секция */
.hero-section {
  text-align: center;
  padding: 80px 0;
  background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)) center/cover no-repeat;
  color: white;
  border-radius: 10px;
  margin: 30px 0;
}

.hero-section h1 {
  font-size: 2.8rem;
  margin-bottom: 20px;
  animation: fadeInDown 1s ease;
}

.hero-text {
  font-size: 1.2rem;
  max-width: 700px;
  margin: 0 auto 30px;
  animation: fadeIn 1.5s ease;
}

/* Кнопки */
.cta-button {
  display: inline-block;
  background: var(--accent);
  color: white;
  padding: 12px 30px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
  box-shadow: 0 4px 15px rgba(0, 210, 255, 0.3);
  animation: fadeInUp 1s ease;
  border: none;
  cursor: pointer;
  font-size: 16px;
}

.cta-button:hover {
  background: var(--secondary);
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 210, 255, 0.4);
}

/* Сетка услуг */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin: 50px 0;
}

.service-card {
  background: var(--white);
  border-radius: 10px;
  padding: 30px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
  opacity: 0;
  transform: translateY(20px);
}

.service-card:hover {
  transform: translateY(-5px) !important;
  box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.service-icon {
  font-size: 2.5rem;
  color: var(--accent);
  margin-bottom: 20px;
  transition: var(--transition);
}

.service-card:hover .service-icon {
  transform: scale(1.1);
}

.service-card h3 {
  color: var(--primary);
  margin-bottom: 15px;
  font-size: 1.4rem;
}

.service-card p {
  color: var(--text-light);
  margin-bottom: 20px;
  font-size: 0.95rem;
}

.service-btn {
  display: inline-block;
  background-color: var(--accent);
  color: var(--white);
  padding: 10px 25px;
  border-radius: 50px;
  text-decoration: none;
  margin-top: 20px;
  transition: var(--transition);
  font-weight: 500;
  border: 2px solid var(--accent);
}

.service-btn:hover {
  background-color: var(--secondary);
  border-color: var(--secondary);
  transform: translateY(-2px);
}

/* Секция преимуществ */
.features-section {
  margin: 60px 0;
}

.features-section h2 {
  text-align: center;
  margin-bottom: 40px;
  color: var(--primary);
  position: relative;
}

.features-section h2::after {
  content: '';
  position: absolute;
  bottom: -15px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 3px;
  background: linear-gradient(to right, var(--accent), var(--secondary));
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.feature {
  background: var(--white);
  padding: 30px 25px;
  border-radius: 8px;
  text-align: center;
  box-shadow: 0 5px 15px rgba(0,0,0,0.05);
  transition: var(--transition);
}

.feature:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.feature i {
  font-size: 2.5rem;
  color: var(--accent);
  margin-bottom: 20px;
  transition: var(--transition);
}

.feature:hover i {
  transform: scale(1.1);
}

.feature h3 {
  font-size: 1.3rem;
  margin-bottom: 10px;
  color: var(--primary);
}

.feature p {
  color: var(--text-light);
  font-size: 0.95rem;
}

/* Секция контактов */
.contact-promo {
  text-align: center;
  padding: 60px 0;
  background-color: var(--primary);
  color: white;
  border-radius: 10px;
  margin: 50px 0;
}

.contact-promo h2 {
  font-size: 2rem;
  margin-bottom: 20px;
}

.contact-promo p {
  font-size: 1.1rem;
  margin-bottom: 30px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* <!-- Футер --> */
.main-footer {
    background-color: var(--dark);
    color: var(--white);
    padding: 60px 0 0;
    margin-top: auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col {
    padding: 0 15px;
}

.footer-col h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    color: var(--white);
    position: relative;
    padding-bottom: 10px;
}

.footer-col h3::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 50px;
    height: 2px;
    background-color: var(--accent);
}

.contact-list, 
.social-list, 
.nav-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.contact-list li, 
.social-list li, 
.nav-list li {
    margin-bottom: 12px;
}

.contact-list a, 
.social-list a, 
.nav-list a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    transition: var(--transition);
    display: inline-block;
}

.contact-list a:hover, 
.social-list a:hover, 
.nav-list a:hover {
    color: var(--accent);
    transform: translateX(5px);
}

.contact-list i, 
.social-list i {
    margin-right: 10px;
    width: 20px;
    text-align: center;
    color: var(--accent);
}

.footer-bottom {
    text-align: center;
    padding: 20px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
}

/* Анимации */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Адаптивность */
@media (max-width: 768px) {
  .main-nav ul {
    gap: 10px;
  }
  
  .main-nav a {
    padding: 8px 12px;
    font-size: 0.95rem;
  }
  
  .logo {
    font-size: 1.8rem;
  }
  
  .hero-section {
    padding: 60px 20px;
  }
  
  .hero-section h1 {
    font-size: 2rem;
  }
  
  .hero-text {
    font-size: 1rem;
  }
  
  .services-grid,
  .features-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .service-card,
  .feature {
    padding: 25px;
  }
  
  .contact-promo {
    padding: 40px 20px;
  }
  
  .contact-promo h2 {
    font-size: 1.5rem;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  
  .footer-col {
    text-align: center;
  }
  
  .footer-col h3::after {
    left: 50%;
    transform: translateX(-50%);
  }
}

@media (max-width: 480px) {
  .page-intro h1 {
    font-size: 1.8rem;
  }
  
  .subtitle {
    font-size: 1rem;
  }
  
  .service-card,
  .type-card {
    padding: 20px;
  }
  
  .service-btn,
  .cta-button {
    padding: 8px 20px;
  }
}