:root {
  --primary-color: #0A192F;
  --secondary-color: #112240;
  --accent-color: #FF6B00;
  --accent-hover: #E65A00;
  --text-main: #333333;
  --text-light: #8892B0;
  --bg-color: #F8F9FA;
  --white: #FFFFFF;
  --border-color: #E2E8F0;
  
  --font-family: 'Inter', sans-serif;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.6;
  font-size: 16px;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.3s ease;
}

ul {
  list-style: none;
}

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

/* Header */
header {
  background-color: var(--primary-color);
  color: var(--white);
  padding: 15px 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 30px;
}

.logo {
  font-size: 24px;
  font-weight: 700;
  color: var(--white);
  display: flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
}

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

nav ul {
  display: flex;
  gap: 20px;
}

nav a {
  font-weight: 500;
  font-size: 15px;
  white-space: nowrap;
}

nav a:hover {
  color: var(--accent-color);
}

/* Dropdown Menu Styles */
.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-content {
  display: none;
  position: absolute;
  background-color: var(--primary-color);
  min-width: 260px;
  box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
  z-index: 1000;
  border-radius: 4px;
  top: 100%;
  left: 0;
  padding: 10px 0;
}

.dropdown-content a {
  color: var(--white);
  padding: 12px 16px;
  text-decoration: none;
  display: block;
  font-weight: 400;
  white-space: normal;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.dropdown-content a:last-child {
  border-bottom: none;
}

.dropdown-content a:hover {
  background-color: var(--accent-color);
  color: var(--white);
}

.dropdown:hover .dropdown-content {
  display: block;
}

.dropdown > a::after {
  content: ' ▼';
  font-size: 10px;
}

.header-contacts {
  display: flex;
  align-items: center;
  gap: 20px;
}

.phone {
  font-size: 18px;
  font-weight: 700;
  color: var(--white);
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--accent-color);
  color: var(--white);
  padding: 10px 24px;
  border-radius: 4px;
  font-weight: 600;
  transition: background-color 0.3s, transform 0.2s;
  border: none;
  cursor: pointer;
  display: inline-block;
  text-align: center;
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  transform: translateY(-2px);
}

.btn-secondary {
  background-color: transparent;
  color: var(--primary-color);
  padding: 10px 24px;
  border-radius: 4px;
  font-weight: 600;
  border: 2px solid var(--primary-color);
  transition: all 0.3s;
  cursor: pointer;
  display: inline-block;
}

.btn-secondary:hover {
  background-color: var(--primary-color);
  color: var(--white);
}

.seo-content-image {
  max-width: 100%;
  height: 250px;
  width: 400px;
  border-radius: 8px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.1);
  object-fit: cover;
  display: block;
}

@media (max-width: 768px) {
  .seo-content-image {
    float: none;
    margin: 20px auto;
    display: block;
    max-width: 100%;
  }

  /* Responsive Grid for SEO Content */
  .content-section > div > div[style*="display: grid"] {
    grid-template-columns: 1fr !important;
  }
}

/* Hero Section */
.hero {
  background-color: var(--secondary-color);
  color: var(--white);
  padding: 80px 0;
  text-align: center;
}

.hero h1 {
  font-size: 42px;
  margin-bottom: 20px;
  line-height: 1.2;
}

.hero p {
  font-size: 18px;
  color: var(--text-light);
  margin-bottom: 30px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.hero .btn-secondary {
  color: var(--white);
  border-color: var(--white);
}

.hero .btn-secondary:hover {
  background-color: var(--white);
  color: var(--primary-color);
}

/* Services Grid */
.section {
  padding: 80px 0;
}

.section-title {
  text-align: center;
  font-size: 32px;
  margin-bottom: 40px;
  color: var(--primary-color);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
}

.service-card {
  background: var(--white);
  padding: 30px;
  border-radius: 8px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.05);
  transition: transform 0.3s;
  text-align: center;
  display: flex;
  flex-direction: column;
}

.service-card:hover {
  transform: translateY(-5px);
}

.service-card img {
  display: block;
  margin: 0 auto 20px;
}

.service-card h3 {
  font-size: 20px;
  margin: 15px 0;
  color: var(--primary-color);
}

.service-card p {
  color: var(--text-main);
  font-size: 15px;
  margin-bottom: 20px;
}

.service-card .btn-secondary {
  margin-top: auto;
}

/* Work Process */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.process-step {
  text-align: center;
  position: relative;
}

.step-number {
  background-color: var(--accent-color);
  color: var(--white);
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 700;
  margin: 0 auto 15px;
}

.process-step h4 {
  font-size: 18px;
  margin-bottom: 10px;
}

/* Forms */
.lead-form-section {
  background-color: var(--primary-color);
  color: var(--white);
  padding: 60px 0;
}

.lead-form {
  background: var(--white);
  padding: 40px;
  border-radius: 8px;
  max-width: 500px;
  margin: 0 auto;
}

.lead-form h3 {
  color: var(--primary-color);
  margin-bottom: 20px;
  text-align: center;
}

.form-group {
  margin-bottom: 15px;
}

.form-group input, .form-group textarea, .form-group select {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-family: var(--font-family);
}

.form-group input:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--accent-color);
}

.lead-form .btn-primary {
  width: 100%;
}

/* Footer */
footer {
  background-color: var(--secondary-color);
  color: var(--text-light);
  padding: 60px 0 20px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-logo {
  font-size: 24px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 15px;
  display: block;
}

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

.footer-seo-text {
  font-size: 14px;
  margin-bottom: 20px;
}

.footer-links h4, .footer-contacts h4 {
  color: var(--white);
  margin-bottom: 20px;
  font-size: 18px;
}

.footer-links ul li {
  margin-bottom: 10px;
}

.footer-links a:hover {
  color: var(--white);
}

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

/* Specific Pages */
.page-header {
  background-color: var(--secondary-color);
  color: var(--white);
  padding: 60px 0;
  text-align: center;
}

.page-header h1 {
  font-size: 36px;
  margin-bottom: 15px;
}

.content-section {
  padding-top: 60px;
  padding-bottom: 60px;
}

.content-section h2 {
  color: var(--primary-color);
  margin-bottom: 20px;
}

.content-section p {
  margin-bottom: 15px;
}

.content-section ul {
  list-style: disc;
  margin-left: 20px;
  margin-bottom: 20px;
}

.content-section li {
  margin-bottom: 10px;
}

.content-grid {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 40px;
  align-items: stretch;
}

.content-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 8px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
  display: block;
}

/* Tables */
.price-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 30px;
  background: var(--white);
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.price-table th, .price-table td {
  padding: 15px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.price-table th {
  background-color: var(--primary-color);
  color: var(--white);
}

.price-table tr:hover {
  background-color: var(--bg-color);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--white);
  font-size: 28px;
  cursor: pointer;
}

/* Mobile Responsive */
@media (max-width: 1024px) {
  .header-inner {
    flex-wrap: wrap;
  }
  
  nav {
    order: 3;
    width: 100%;
    display: none;
    padding-top: 15px;
    border-top: 1px solid rgba(255,255,255,0.1);
    margin-top: 15px;
  }
  
  nav.nav-open {
    display: block;
  }
  
  nav ul {
    flex-direction: column;
    gap: 15px;
    align-items: center;
  }
  
  .mobile-menu-btn {
    display: block;
  }
}

@media (max-width: 768px) {
  .header-contacts {
    order: 4;
    width: 100%;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    margin-top: 15px;
  }
  
  .process-grid {
    grid-template-columns: 1fr;
  }
  
  .content-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .hero h1 {
    font-size: 32px;
  }
  
  .price-table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }
}