:root {
  --primary-color: #ff6b35;
  --primary-hover: #e55a2b;
  --secondary-color: #6c757d;
  --accent-color: #f8f9fa;
  --text-color: #333;
  --light-text: #fff;
  --border-radius: 8px;
  --box-shadow: 0 5px 15px rgba(0,0,0,0.1);
  --container-width: 1200px;
  --header-height: 100px;
}

/* Base styles */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Roboto', sans-serif; line-height: 1.6; color: var(--text-color); }
.container { max-width: var(--container-width); margin: 0 auto; padding: 0 20px; }

/* Typography */
h1, h2, h3, h4, h5, h6 { margin-bottom: 0.5em; font-weight: 600; }
.section-title { font-size: 32px; margin-bottom: 30px; text-align: center; }

/* Common components */
.btn {
  display: inline-block; padding: 10px 20px; background-color: var(--primary-color);
  color: white; text-decoration: none; border-radius: 5px; transition: background-color 0.3s;
}
.btn:hover { background-color: var(--primary-hover); }

/* Header styles */
.header {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
  background-color: white; box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}
.header-container {
  display: flex; justify-content: space-between; align-items: center; padding: 10px 20px;
}
.logo-link { margin-right: auto; }
.logo { height: 80px; width: auto; }

/* Navigation */
.nav-list { display: flex; list-style: none; }
.nav-item { margin-left: 30px; }
.nav-link {
  text-decoration: none; color: var(--text-color);
  font-weight: 500; transition: color 0.3s;
}
.nav-link:hover, .nav-link.active { color: var(--primary-color); }

/* Language switcher */
.lang-switch { display: flex; align-items: center; gap: 10px; }
.lang-btn {
  background: none; border: none; cursor: pointer;
  font-weight: 500; color: var(--secondary-color); transition: color 0.3s;
}
.lang-btn:hover, .lang-btn.active { color: var(--primary-color); }

/* Hero section */
.hero {
  height: calc(100vh - var(--header-height)); margin-top: var(--header-height);
  background-color: #000;
  position: relative;
  display: flex; align-items: center; justify-content: center;
}
.hero-overlay {
  display: none;
}
.hero-container {
  width: 100%; max-width: var(--container-width); padding: 0 20px;
  position: relative; z-index: 2; text-align: center;
}
.hero h1 {
  color: white; text-shadow: 2px 2px 4px rgba(0,0,0,0.7);
  font-size: 42px; white-space: nowrap;
}

/* Advantages section */
.advantages-section { padding: 50px 0; background-color: var(--accent-color); }
.advantages-container { position: relative; padding: 0 60px; }

/* Slider controls */
.scroll-button {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 10;
  background-color: white; border: none; border-radius: 50%; width: 40px; height: 40px;
  box-shadow: var(--box-shadow); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
}
.scroll-left { left: 10px; }
.scroll-right { right: 10px; }
.arrow { width: 15px; height: 15px; border-style: solid; border-width: 3px 0 0 3px; }
.arrow-left { transform: rotate(-45deg); }
.arrow-right { transform: rotate(135deg); }

/* Advantages slider */
.advantages-scroll {
  position: relative; overflow: hidden; white-space: nowrap; padding: 20px 0;
  width: 100%; max-width: 980px; margin: 0 auto;
  scrollbar-width: none; -ms-overflow-style: none;
}
.advantages-slider { display: inline-flex; gap: 20px; transition: transform 0.5s ease; }

.advantage-item {
  display: inline-block; flex: 0 0 300px; min-width: 300px; text-align: center;
  background-color: white; border-radius: var(--border-radius);
  padding: 25px 15px; box-shadow: var(--box-shadow);
}
.advantage-item img { width: 150px; height: 150px; margin-bottom: 15px; display: inline-block; }
.advantage-item h3 { font-size: 16px; margin-bottom: 10px; white-space: normal; }

/* Products section */
.products-section { padding: 80px 0; }
.products-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 30px; margin-top: 50px;
}

.product-card {
  border-radius: var(--border-radius); overflow: hidden;
  box-shadow: var(--box-shadow); transition: transform 0.3s;
}
.product-card:hover { transform: translateY(-5px); }
.product-image { width: 100%; height: 200px; object-fit: cover; }
.product-info { padding: 20px; }
.product-title { font-size: 18px; }
.product-description { color: var(--secondary-color); margin-bottom: 15px; }

/* Footer */
.footer { background-color: var(--white-color); color: var(--text-color); padding: 50px 0 20px; }
.footer-content {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px; margin-bottom: 30px;
}
.footer-logo { height: 60px; margin-bottom: 20px; }
.footer-info p { margin-bottom: 10px; }

/* Footer elements */
.social-links { display: flex; gap: 15px; margin-top: 20px; }
.social-icon {
  width: 30px; height: 30px; fill: white; transition: fill 0.3s;
}
.social-icon:hover { fill: var(--primary-color); }

.footer-title {
  font-size: 18px; margin-bottom: 20px; position: relative;
}
.footer-title::after {
  content: ''; position: absolute; left: 0; bottom: -10px;
  width: 50px; height: 2px; background-color: var(--primary-color);
}

.footer-nav { list-style: none; }
.footer-nav-item { margin-bottom: 10px; }
.footer-nav-link {
  color: #ddd; text-decoration: none; transition: color 0.3s;
}
.footer-nav-link:hover { color: white; }

.contact-item { display: flex; gap: 10px; margin-bottom: 15px; }
.contact-icon { width: 20px; height: 20px; fill: var(--primary-color); }

.footer-bottom {
  border-top: 1px solid #444; padding-top: 20px;
  text-align: center; font-size: 14px;
}

/* Responsive styles */
@media (max-width: 768px) {
  .nav-list { display: none; }
  .hero h1 { white-space: normal; font-size: 32px; }
  .section-title { font-size: 28px; }
  .advantages-scroll { max-width: 100%; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 28px; padding: 0 15px; }
  .section-title { font-size: 24px; }
  .advantage-item img { width: 120px; height: 120px; }
}