:root {
  /* Основная монохромная палитра */
  --primary-color: #2c3e50;
  --primary-light: #3a5269;
  --primary-dark: #1e2a36;
  --accent-color: #16a085;
  --accent-light: #1abc9c;
  --accent-dark: #0f705d;
  
  /* Нейтральные оттенки */
  --neutral-100: #ffffff;
  --neutral-200: #f8f9fa;
  --neutral-300: #e9ecef;
  --neutral-400: #dee2e6;
  --neutral-500: #adb5bd;
  --neutral-600: #6c757d;
  --neutral-700: #495057;
  --neutral-800: #343a40;
  --neutral-900: #212529;
  
  /* Вспомогательные цвета */
  --success: #28a745;
  --info: #17a2b8;
  --warning: #ffc107;
  --danger: #dc3545;
  
  /* Градиенты */
  --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  --gradient-accent: linear-gradient(135deg, var(--accent-color), var(--accent-dark));
  --gradient-overlay: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.3));
  
  /* Тени */
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 8px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 16px rgba(0,0,0,0.15);
  
  /* Скругления */
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 16px;
  
  /* Анимации */
  --transition-fast: 0.2s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  --transition-normal: 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  --transition-slow: 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* Основные стили */
html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Open Sans', sans-serif;
  color: var(--neutral-700);
  background-color: var(--neutral-200);
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Raleway', sans-serif;
  font-weight: 600;
  color: var(--primary-color);
}

p {
  margin-bottom: 1.5rem;
}

a {
  color: var(--accent-color);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--accent-dark);
  text-decoration: none;
}

img {
  max-width: 100%;
  height: auto;
}

.section-title {
  position: relative;
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--primary-color);
  text-align: center;
}

.section-subtitle {
  font-size: 1.25rem;
  margin-bottom: 3rem;
  color: var(--neutral-600);
  text-align: center;
}

/* Контейнер для изображений */
.image-container {
  overflow: hidden;
  border-radius: var(--border-radius-md);
  margin-bottom: 1.5rem;
  text-align: center;
}

.image-container img {
  transition: transform var(--transition-normal);
  margin: 0 auto;
  display: block;
  width: 100%;
  object-fit: cover;
}

/* Кнопки */
.btn, 
button, 
input[type="submit"] {
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius-md);
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  transition: all var(--transition-normal);
  border: none;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 5px;
  height: 5px;
  background: rgba(255, 255, 255, 0.5);
  opacity: 0;
  border-radius: 100%;
  transform: scale(1, 1) translate(-50%, -50%);
  transform-origin: 50% 50%;
}

.btn:hover::after {
  animation: ripple 1s ease-out;
}

@keyframes ripple {
  0% {
    transform: scale(0, 0);
    opacity: 0.5;
  }
  100% {
    transform: scale(20, 20);
    opacity: 0;
  }
}

.btn-primary {
  background-color: var(--accent-color);
  color: var(--neutral-100);
}

.btn-primary:hover {
  background-color: var(--accent-dark);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.btn-outline-light {
  background-color: transparent;
  color: var(--neutral-100);
  border: 2px solid var(--neutral-100);
}

.btn-outline-light:hover {
  background-color: var(--neutral-100);
  color: var(--primary-color);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.btn-outline-primary {
  background-color: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.btn-outline-primary:hover {
  background-color: var(--primary-color);
  color: var(--neutral-100);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

/* Карточки */
.card {
  background-color: var(--neutral-100);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  margin-bottom: 2rem;
  border: none;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
}

.card-image {
  width: 100%;
  height: 250px;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.card:hover .card-image img {
  transform: scale(1.05);
}

.card-content {
  padding: 1.5rem;
  flex-grow: 1;
  width: 100%;
}

.card-content h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.card-content p {
  color: var(--neutral-700);
  margin-bottom: 1.5rem;
}

.read-more-link {
  display: inline-block;
  color: var(--accent-color);
  font-weight: 600;
  position: relative;
  padding-bottom: 2px;
}

.read-more-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent-color);
  transition: width var(--transition-normal);
}

.read-more-link:hover::after {
  width: 100%;
}

/* Header и Навигация */
header {
  background-color: transparent;
  transition: background-color var(--transition-normal);
}

header.scrolled {
  background-color: var(--neutral-900);
  box-shadow: var(--shadow-md);
}

.navbar {
  padding: 1.5rem 0;
  transition: padding var(--transition-normal);
}

.navbar.scrolled {
  padding: 0.75rem 0;
}

.navbar-brand {
  font-family: 'Raleway', sans-serif;
  font-weight: 700;
  font-size: 1.75rem;
  color: var(--neutral-100) !important;
}

.navbar-dark .navbar-nav .nav-link {
  color: rgba(255, 255, 255, 0.8);
  font-weight: 600;
  padding: 0.5rem 1rem;
  position: relative;
}

.navbar-dark .navbar-nav .nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 1rem;
  right: 1rem;
  height: 2px;
  background-color: var(--accent-color);
  transform: scaleX(0);
  transition: transform var(--transition-normal);
}

.navbar-dark .navbar-nav .nav-link:hover,
.navbar-dark .navbar-nav .nav-link.active {
  color: var(--neutral-100);
}

.navbar-dark .navbar-nav .nav-link:hover::after,
.navbar-dark .navbar-nav .nav-link.active::after {
  transform: scaleX(1);
}

/* Hero Section */
.hero-section {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  color: var(--neutral-100);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
  padding: 100px 0;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-overlay);
  z-index: 0;
}

.hero-section .container {
  position: relative;
  z-index: 1;
}

.hero-section h1 {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--neutral-100);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
  letter-spacing: 1px;
}

.hero-section .lead {
  font-size: 1.5rem;
  margin-bottom: 2.5rem;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  color: var(--neutral-100);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

/* Секция процесса */
.process-section {
  padding: 100px 0;
  background-color: var(--neutral-100);
}

.process-steps {
  position: relative;
}

.process-steps::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 30px;
  width: 2px;
  background-color: var(--neutral-400);
}

.process-step {
  position: relative;
  padding-left: 80px;
  margin-bottom: 3rem;
}

.step-number {
  position: absolute;
  left: 0;
  top: 0;
  width: 60px;
  height: 60px;
  background-color: var(--accent-color);
  color: var(--neutral-100);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  font-family: 'Raleway', sans-serif;
  z-index: 1;
  box-shadow: var(--shadow-md);
}

.step-content h3 {
  margin-bottom: 1rem;
  color: var(--primary-color);
}

/* Секция ожиданий */
.expectations-section {
  padding: 100px 0;
  background-color: var(--neutral-200);
}

.expectations-timeline {
  position: relative;
}

.timeline-item {
  margin-bottom: 3rem;
  padding: 2rem;
  background-color: var(--neutral-100);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
  position: relative;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.timeline-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.timeline-item::before {
  content: '';
  position: absolute;
  top: 2rem;
  left: -15px;
  width: 30px;
  height: 30px;
  background-color: var(--accent-color);
  border-radius: 50%;
  z-index: 1;
}

.timeline-content h3 {
  color: var(--primary-color);
  margin-bottom: 1rem;
}

/* Секция услуг */
.services-section {
  padding: 100px 0;
  background-color: var(--neutral-100);
}

.service-card {
  height: 100%;
}

.form-check-input {
  width: 3rem;
  height: 1.5rem;
  margin-top: 0.25rem;
  margin-left: -2.5rem;
  background-color: var(--neutral-400);
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='-4 -4 8 8'%3e%3ccircle r='3' fill='%23fff'/%3e%3c/svg%3e");
  background-position: left center;
  background-repeat: no-repeat;
  background-size: contain;
  border: none;
  transition: background-position var(--transition-normal);
}

.form-check-input:checked {
  background-color: var(--accent-color);
  background-position: right center;
}

/* Секция кейсов */
.case-studies-section {
  padding: 100px 0;
  background-color: var(--neutral-200);
}

.case-study-card {
  background-color: var(--neutral-100);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  padding: 2rem;
}

.case-study-content h3 {
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.client-name {
  color: var(--accent-color);
  font-weight: 600;
  margin-bottom: 1rem;
}

.case-description {
  margin-bottom: 1.5rem;
}

.results {
  background-color: var(--neutral-200);
  padding: 1.5rem;
  border-radius: var(--border-radius-md);
}

.results ul {
  margin-bottom: 0;
  padding-left: 1.5rem;
}

.results li {
  margin-bottom: 0.5rem;
}

/* Секция отзывов */
.testimonials-section {
  padding: 100px 0;
  background-color: var(--neutral-100);
}

.testimonial-card {
  padding: 3rem;
  background-color: var(--neutral-200);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
  margin: 0 1rem;
}

.quote-icon {
  font-size: 3rem;
  color: var(--accent-color);
  opacity: 0.3;
  line-height: 1;
  margin-bottom: 1rem;
}

.testimonial-text {
  font-size: 1.1rem;
  font-style: italic;
  margin-bottom: 2rem;
}

.client-info {
  display: flex;
  align-items: center;
}

.client-image {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  object-fit: cover;
  margin-right: 1rem;
  border: 3px solid var(--accent-color);
}

.client-details h4 {
  margin-bottom: 0.25rem;
  color: var(--primary-color);
}

.client-details p {
  margin-bottom: 0;
  color: var(--neutral-600);
}

/* Секция клиентов */
.clientele-section {
  padding: 100px 0;
  background-color: var(--neutral-200);
}

.clients-logo-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
}

.client-logo {
  padding: 1.5rem;
  background-color: var(--neutral-100);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.client-logo:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.client-logo img {
  max-height: 80px;
  filter: grayscale(100%);
  opacity: 0.7;
  transition: filter var(--transition-normal), opacity var(--transition-normal);
  object-fit: contain;
}

.client-logo:hover img {
  filter: grayscale(0%);
  opacity: 1;
}

/* Секция медиа и новостей */
.media-news-section {
  padding: 100px 0;
  background-color: var(--neutral-100);
}

.news-card .card-image {
  height: 200px;
}

.news-date {
  display: block;
  color: var(--neutral-600);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

/* Секция ресурсов */
.resources-section {
  padding: 100px 0;
  background-color: var(--neutral-200);
}

.resource-card {
  background-color: var(--neutral-100);
  padding: 2rem;
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
  height: 100%;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  text-align: center;
}

.resource-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
}

.resource-icon {
  font-size: 2.5rem;
  color: var(--accent-color);
  margin-bottom: 1.5rem;
}

.resource-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.resource-link {
  display: inline-block;
  margin-top: 1rem;
  color: var(--accent-color);
  font-weight: 600;
  text-decoration: none;
  position: relative;
}

.resource-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent-color);
  transition: width var(--transition-normal);
}

.resource-link:hover::after {
  width: 100%;
}

/* Секция контактов */
.contact-section {
  padding: 100px 0;
  background-color: var(--neutral-100);
}

.contact-info {
  margin-bottom: 2rem;
}

.contact-item {
  display: flex;
  margin-bottom: 1.5rem;
  padding: 1.5rem;
  background-color: var(--neutral-200);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.contact-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  background-color: var(--neutral-100);
}

.contact-item .icon {
  font-size: 1.5rem;
  color: var(--accent-color);
  margin-right: 1.5rem;
  display: flex;
  align-items: center;
}

.contact-item .info h3 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
  color: var(--primary-color);
}

.contact-item .info p {
  margin-bottom: 0;
  color: var(--neutral-700);
}

.map-container {
  border-radius: var(--border-radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.contact-form-container {
  background-color: var(--neutral-200);
  padding: 2.5rem;
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
}

.contact-form-container h3 {
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.form-control {
  padding: 0.75rem 1rem;
  border: 1px solid var(--neutral-400);
  border-radius: var(--border-radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 0.25rem rgba(22, 160, 133, 0.25);
}

.form-select {
  padding: 0.75rem 1rem;
  border: 1px solid var(--neutral-400);
  border-radius: var(--border-radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-select:focus {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 0.25rem rgba(22, 160, 133, 0.25);
}

/* Footer */
.site-footer {
  background-color: var(--primary-color);
  color: var(--neutral-300);
  padding: 80px 0 30px;
}

.site-footer h3, .site-footer h4 {
  color: var(--neutral-100);
  margin-bottom: 1.5rem;
}

.footer-info p {
  color: var(--neutral-400);
  margin-bottom: 1.5rem;
}

.social-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.social-links a {
  color: var(--neutral-300);
  transition: color var(--transition-fast);
  text-decoration: none;
  margin-right: 15px;
}

.social-links a:hover {
  color: var(--accent-color);
}

.footer-links {
  list-style: none;
  padding-left: 0;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: var(--neutral-400);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.newsletter-form .form-control {
  background-color: rgba(255, 255, 255, 0.1);
  border: none;
  color: var(--neutral-100);
}

.newsletter-form .form-control::placeholder {
  color: var(--neutral-500);
}

.copyright {
  margin-top: 1.5rem;
  color: var(--neutral-500);
  font-size: 0.9rem;
}

/* Параллакс эффект */
.parallax-section {
  background-attachment: fixed;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

/* Анимации при прокрутке */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--transition-normal), transform var(--transition-normal);
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Cookie consent */
#cookieConsent {
  transition: opacity var(--transition-normal), transform var(--transition-normal);
}

#acceptCookies {
  margin-top: 10px;
  padding: 8px 20px;
  background-color: var(--accent-color);
  color: white;
  border: none;
  border-radius: var(--border-radius-md);
  cursor: pointer;
}

/* Success page */
.success-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 2rem;
  text-align: center;
  background-color: var(--neutral-100);
}

.success-icon {
  font-size: 5rem;
  color: var(--accent-color);
  margin-bottom: 2rem;
}

.success-page h1 {
  font-size: 3rem;
  margin-bottom: 1.5rem;
  color: var(--primary-color);
}

.success-page p {
  font-size: 1.2rem;
  max-width: 600px;
  margin-bottom: 2rem;
}

/* Privacy and Terms pages */
.page-content {
  padding-top: 100px;
  padding-bottom: 50px;
}

.page-content h1 {
  margin-bottom: 2rem;
  color: var(--primary-color);
}

.page-content h2 {
  margin-top: 2.5rem;
  margin-bottom: 1.5rem;
  color: var(--primary-color);
}

/* Адаптивность */
@media (max-width: 991px) {
  .section-title {
    font-size: 2rem;
  }
  
  .section-subtitle {
    font-size: 1.1rem;
  }
  
  .hero-section h1 {
    font-size: 2.5rem;
  }
  
  .hero-section .lead {
    font-size: 1.2rem;
  }
  
  .process-step {
    padding-left: 70px;
  }
  
  .testimonial-card {
    padding: 2rem;
  }
}

@media (max-width: 767px) {
  .hero-section {
    height: auto;
    padding: 120px 0 80px;
  }
  
  .hero-section h1 {
    font-size: 2rem;
  }
  
  .hero-section .lead {
    font-size: 1.1rem;
  }
  
  .process-step {
    padding-left: 60px;
  }
  
  .step-number {
    width: 50px;
    height: 50px;
    font-size: 1.2rem;
  }
  
  .card-image {
    height: 200px;
  }
  
  .testimonial-card {
    padding: 1.5rem;
  }
  
  .contact-form-container {
    padding: 1.5rem;
  }
}

@media (max-width: 575px) {
  .section-title {
    font-size: 1.75rem;
  }
  
  .section-subtitle {
    font-size: 1rem;
    margin-bottom: 2rem;
  }
  
  .process-steps::before {
    left: 25px;
  }
  
  .process-step {
    padding-left: 50px;
  }
  
  .step-number {
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }
  
  .testimonial-text {
    font-size: 1rem;
  }
  
  .client-image {
    width: 50px;
    height: 50px;
  }
  
  .timeline-item {
    padding: 1.5rem;
  }
  
  .timeline-item::before {
    display: none;
  }
}