:root {
  /* Раздельно-дополнительная цветовая схема */
  --primary-color: #ff6b35; /* Основной цвет - яркий оранжевый */
  --primary-dark: #e55a2b; /* Темнее основного */
  --primary-light: #ff8c61; /* Светлее основного */
  
  --secondary-color: #2b9eb3; /* Дополнительный цвет - бирюзовый */
  --secondary-dark: #1a7f8f; /* Темнее дополнительного */
  --secondary-light: #5cc7d8; /* Светлее дополнительного */
  
  --accent-color: #8265a7; /* Акцентный цвет - фиолетовый */
  --accent-dark: #6a5188; /* Темнее акцентного */
  --accent-light: #a389c1; /* Светлее акцентного */
  
  /* Нейтральные цвета */
  --dark: #2d2a32; /* Почти черный */
  --medium-dark: #4a4754; /* Темно-серый */
  --medium: #6e6a76; /* Средне-серый */
  --medium-light: #9c98a4; /* Светло-серый */
  --light: #eeedf2; /* Почти белый */
  
  /* Градиенты */
  --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  --gradient-secondary: linear-gradient(135deg, var(--secondary-color), var(--secondary-dark));
  --gradient-accent: linear-gradient(135deg, var(--accent-color), var(--accent-dark));
  --gradient-light: linear-gradient(135deg, var(--light), #ffffff);
  --gradient-dark: linear-gradient(135deg, var(--dark), var(--medium-dark));
  
  /* Тени */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.15);
  --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.2);
  
  /* Скругления */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 20px;
  --radius-full: 9999px;
  
  /* Анимации */
  --transition-fast: 0.2s ease;
  --transition-medium: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Z-index */
  --z-negative: -1;
  --z-normal: 1;
  --z-tooltips: 10;
  --z-fixed: 100;
  --z-modal: 1000;
}

/* === Базовые стили === */
html, body {
  scroll-behavior: smooth;
  font-family: 'Open Sans', sans-serif;
  color: var(--dark);
  background-color: var(--light);
}

h1, h2, h3, h4, h5, h6, .navbar-brand {
  font-family: 'Raleway', sans-serif;
  font-weight: 700;
  margin-bottom: 1rem;
}

.section-title {
  position: relative;
  margin-bottom: 2rem;
  color: var(--dark);
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 0;
  width: 60px;
  height: 4px;
  background: var(--primary-color);
}

.text-center .section-title::after {
  left: 50%;
  transform: translateX(-50%);
}

.section-description {
  margin-bottom: 3rem;
  color: var(--medium);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

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

a:hover {
  color: var(--secondary-dark);
  text-decoration: underline;
}

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

section {
  padding: 5rem 0;
  position: relative;
}

section:nth-child(odd) {
  background-color: #ffffff;
}

section:nth-child(even) {
  background-color: var(--light);
}

/* === Кнопки === */
.btn {
  display: inline-block;
  font-weight: 600;
  text-align: center;
  vertical-align: middle;
  cursor: pointer;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  border-radius: var(--radius-md);
  transition: all var(--transition-medium);
  border: 2px solid transparent;
  text-transform: uppercase;
  letter-spacing: 1px;
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.1);
  z-index: -1;
  transform: translateY(100%);
  transition: transform var(--transition-medium);
}

.btn:hover::before {
  transform: translateY(0);
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow-md);
}

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

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

.btn-outline-primary:hover {
  background: var(--primary-color);
  color: white;
  transform: translateY(-3px);
}

.btn-outline-light {
  background: transparent;
  color: white;
  border-color: white;
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.15);
  color: white;
  transform: translateY(-3px);
}

.btn-secondary {
  background: var(--gradient-secondary);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-secondary:hover {
  background: var(--secondary-dark);
  box-shadow: var(--shadow-lg);
  color: white;
  transform: translateY(-3px);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

/* === Навигация === */
.retro-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: var(--z-fixed);
  padding: 1rem 0;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-medium);
}

.retro-header.scrolled {
  padding: 0.5rem 0;
  background-color: rgba(255, 255, 255, 0.98);
}

.navbar-brand {
  font-size: 1.75rem;
  color: var(--primary-color);
  text-decoration: none;
  position: relative;
  z-index: 1;
}

.navbar-brand::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 6px;
  background-color: var(--primary-light);
  z-index: -1;
  transform: skewX(-15deg) translateY(2px);
}

.nav-link {
  font-weight: 600;
  padding: 0.5rem 1rem !important;
  color: var(--dark) !important;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 1rem;
  right: 1rem;
  height: 2px;
  background-color: var(--primary-color);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition-medium);
}

.nav-link:hover {
  color: var(--primary-color) !important;
}

.nav-link:hover::after {
  transform: scaleX(1);
}

/* === Hero Section === */
.hero-section {
  position: relative;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  padding: 0;
  margin-top: 76px;
  min-height: 80vh;
  display: flex;
  align-items: center;
  color: white;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.3));
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 650px;
  padding: 4rem 0;
  transform: translateZ(0);
  perspective: 1000px;
}

.hero-content h1 {
  font-size: 3.5rem;
  margin-bottom: 1rem;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
  transform: translateZ(30px);
  animation: float 6s ease-in-out infinite;
}

.hero-content h2 {
  margin-bottom: 1.5rem;
  text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
  transform: translateZ(20px);
  animation: float 6s ease-in-out infinite;
  animation-delay: 0.2s;
}

.hero-content p {
  margin-bottom: 2rem;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
  transform: translateZ(10px);
  animation: float 6s ease-in-out infinite;
  animation-delay: 0.4s;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
  transform: translateZ(0);
}

@keyframes float {
  0%, 100% {
    transform: translateZ(0) translateY(0);
  }
  50% {
    transform: translateZ(0) translateY(-10px);
  }
}

/* === Intro Section === */
.intro-section {
  overflow: hidden;
}

.intro-image {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transform: perspective(1000px) rotateY(-5deg);
  transition: transform var(--transition-medium);
}

.intro-image:hover {
  transform: perspective(1000px) rotateY(0);
}

.intro-image::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(255, 107, 53, 0.2), rgba(43, 158, 179, 0.2));
  z-index: 1;
  opacity: 0;
  transition: opacity var(--transition-medium);
}

.intro-image:hover::before {
  opacity: 1;
}

.feature-toggles {
  margin-top: 2rem;
  padding: 1.5rem;
  background: var(--light);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.feature-toggles h3 {
  margin-bottom: 1rem;
  font-size: 1.25rem;
}

.form-check {
  margin-bottom: 0.75rem;
}

.form-switch .form-check-input {
  background-color: var(--medium-light);
}

.form-switch .form-check-input:checked {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
}

/* === Portfolio Section === */
.portfolio-section {
  background-color: var(--light);
  position: relative;
  overflow: hidden;
}

.portfolio-section::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 300px;
  height: 300px;
  background-color: rgba(255, 107, 53, 0.1);
  border-radius: 50%;
  z-index: 0;
}

.portfolio-section::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -100px;
  width: 250px;
  height: 250px;
  background-color: rgba(43, 158, 179, 0.1);
  border-radius: 50%;
  z-index: 0;
}

.portfolio-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-medium), box-shadow var(--transition-medium);
  background-color: white;
  position: relative;
  z-index: 1;
}

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

.card-image {
  position: relative;
  overflow: hidden;
  height: 240px;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

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

.card-content {
  padding: 1.5rem;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

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

.card-content p {
  margin-bottom: 1.5rem;
  color: var(--medium);
  flex-grow: 1;
}

/* === Case Studies Section === */
.case-studies-section {
  background-color: #ffffff;
  position: relative;
  overflow: hidden;
}

.case-studies-section::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 40%;
  height: 100%;
  background-color: rgba(130, 101, 167, 0.05);
  clip-path: polygon(25% 0%, 100% 0%, 100% 100%, 0% 100%);
  z-index: 0;
}

.accordion-item {
  margin-bottom: 1rem;
  border: none;
  border-radius: var(--radius-md) !important;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.accordion-button {
  font-family: 'Raleway', sans-serif;
  font-weight: 600;
  padding: 1.25rem 1.5rem;
  background-color: white;
  color: var(--dark);
  border-radius: var(--radius-md) !important;
}

.accordion-button:not(.collapsed) {
  color: var(--primary-color);
  background-color: white;
  box-shadow: none;
}

.accordion-button:focus {
  box-shadow: none;
  border-color: var(--primary-light);
}

.accordion-button::after {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23ff6b35'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
  transition: transform var(--transition-fast);
}

.accordion-body {
  padding: 1.5rem;
  background-color: white;
}

.accordion-body h3 {
  color: var(--secondary-color);
  margin-bottom: 1rem;
}

.accordion-body img {
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

/* === External Resources Section === */
.external-resources {
  background-color: var(--light);
}

.resource-card {
  padding: 1.5rem;
  background-color: white;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  height: 100%;
  transition: transform var(--transition-medium), box-shadow var(--transition-medium);
}

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

.resource-card h3 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.resource-card h3 a {
  color: var(--secondary-color);
  transition: color var(--transition-fast);
}

.resource-card h3 a:hover {
  color: var(--secondary-dark);
  text-decoration: none;
}

.resource-card p {
  color: var(--medium);
  margin-bottom: 0;
}

/* === Press Section === */
.press-section {
  background-color: #ffffff;
}

.press-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-medium), box-shadow var(--transition-medium);
  background-color: white;
}

.press-card:hover {
  transform: translateY(-7px);
  box-shadow: var(--shadow-lg);
}

.press-image {
  position: relative;
  overflow: hidden;
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

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

.press-content {
  padding: 1.5rem;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.press-content h3 {
  font-size: 1.25rem;
  color: var(--secondary-color);
  margin-bottom: 0.5rem;
}

.press-content h4 {
  font-size: 1.125rem;
  color: var(--dark);
  margin-bottom: 1rem;
}

.press-content p {
  color: var(--medium);
  flex-grow: 1;
}

.press-date {
  margin-top: 1rem;
  color: var(--medium-light);
  font-style: italic;
  font-size: 0.875rem;
}

/* === Gallery Section === */
.gallery-section {
  background-color: var(--light);
  position: relative;
  overflow: hidden;
}

.gallery-section::after {
  content: '';
  position: absolute;
  bottom: -50px;
  right: -50px;
  width: 200px;
  height: 200px;
  background-color: rgba(130, 101, 167, 0.1);
  border-radius: 50%;
  z-index: 0;
}

.gallery-item {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  margin-bottom: 1.5rem;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-medium);
  display: block;
  margin: 0 auto;
}

.gallery-item:hover img {
  transform: scale(1.05);
}

.gallery-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1.5rem;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8), rgba(0, 0, 0, 0));
  color: white;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-medium), transform var(--transition-medium);
}

.gallery-item:hover .gallery-caption {
  opacity: 1;
  transform: translateY(0);
}

.gallery-caption h4 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.gallery-caption p {
  font-size: 0.875rem;
  margin-bottom: 0;
}

/* === Contact Section === */
.contact-section {
  background-color: #ffffff;
  position: relative;
  overflow: hidden;
}

.contact-section::before {
  content: '';
  position: absolute;
  top: -100px;
  left: -100px;
  width: 300px;
  height: 300px;
  background-color: rgba(255, 107, 53, 0.05);
  border-radius: 50%;
  z-index: 0;
}

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

.contact-item {
  margin-bottom: 1.5rem;
}

.contact-item h3 {
  font-size: 1.25rem;
  color: var(--secondary-color);
  margin-bottom: 0.5rem;
}

.contact-form-container {
  background-color: var(--light);
  padding: 2rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

.contact-form-container h3 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  color: var(--dark);
}

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

.form-control:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 0.25rem rgba(255, 107, 53, 0.25);
}

.form-label {
  color: var(--medium-dark);
  font-weight: 600;
}

/* === Footer === */
.footer-section {
  background-color: var(--dark);
  color: white;
  padding: 4rem 0 2rem;
  position: relative;
  overflow: hidden;
}

.footer-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--gradient-primary);
}

.footer-section h3 {
  color: white;
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  position: relative;
}

.footer-section h3::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 40px;
  height: 3px;
  background-color: var(--primary-color);
}

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

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

.footer-links a {
  color: var(--light);
  transition: color var(--transition-fast), transform var(--transition-fast);
  display: inline-block;
}

.footer-links a:hover {
  color: var(--primary-light);
  transform: translateX(5px);
  text-decoration: none;
}

.social-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.social-links a {
  color: white;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  transition: background-color var(--transition-fast), color var(--transition-fast);
  text-decoration: none;
}

.social-links a:hover {
  background-color: var(--primary-color);
  color: white;
  transform: translateY(-3px);
}

.newsletter-signup h4 {
  font-size: 1.125rem;
  margin-bottom: 1rem;
  color: white;
}

.newsletter-form .input-group {
  box-shadow: var(--shadow-md);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.newsletter-form .form-control {
  border: none;
  padding: 0.75rem 1rem;
}

.newsletter-form .btn {
  padding: 0.75rem 1.5rem;
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
}

.footer-bottom {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  color: var(--medium-light);
  font-size: 0.875rem;
}

/* === Cookie Consent === */
#cookieConsentPopup {
  border-top: 4px solid var(--primary-color);
  box-shadow: var(--shadow-lg);
}

#acceptCookies {
  margin-left: 1rem;
}

/* === Success Page === */
.success-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
}

.success-content {
  max-width: 600px;
  background-color: white;
  padding: 3rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  position: relative;
}

.success-content::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--gradient-primary);
}

.success-icon {
  width: 80px;
  height: 80px;
  background-color: var(--primary-light);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 2rem;
  font-size: 2.5rem;
}

/* === Privacy & Terms Pages === */
.privacy-page, .terms-page {
  padding-top: 100px;
}

.privacy-content, .terms-content {
  background-color: white;
  padding: 3rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

/* === Animations === */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.8s ease forwards;
}

/* === Responsive === */
@media (max-width: 991.98px) {
  .hero-content h1 {
    font-size: 2.5rem;
  }
  
  .hero-content h2 {
    font-size: 1.75rem;
  }
  
  .hero-buttons {
    flex-direction: column;
    gap: 0.75rem;
  }
  
  .btn {
    width: 100%;
  }
  
  .intro-image {
    margin-top: 2rem;
  }
  
  .contact-form-container {
    margin-top: 3rem;
  }
}

@media (max-width: 767.98px) {
  section {
    padding: 4rem 0;
  }
  
  .hero-section {
    min-height: 70vh;
  }
  
  .hero-content h1 {
    font-size: 2rem;
  }
  
  .hero-content h2 {
    font-size: 1.5rem;
  }
  
  .section-title {
    font-size: 1.75rem;
  }
  
  .social-links {
    flex-direction: column;
    gap: 0.75rem;
  }
  
  .social-links a {
    width: 100%;
    text-align: center;
  }
}

@media (max-width: 575.98px) {
  section {
    padding: 3rem 0;
  }
  
  .hero-content {
    padding: 3rem 0;
  }
  
  .hero-content h1 {
    font-size: 1.75rem;
  }
  
  .hero-content h2 {
    font-size: 1.25rem;
  }
  
  .section-title {
    font-size: 1.5rem;
  }
}

/* 3D Transform Utilities */
.tilt-effect {
  transform-style: preserve-3d;
  perspective: 1000px;
}

.tilt-inner {
  transform: translateZ(50px);
  transition: transform var(--transition-medium);
}

/* Читать далее */
.read-more {
  display: inline-block;
  color: var(--primary-color);
  font-weight: 600;
  transition: all var(--transition-fast);
  text-decoration: none;
  position: relative;
}

.read-more::after {
  content: '→';
  margin-left: 0.5rem;
  transition: transform var(--transition-fast);
}

.read-more:hover {
  color: var(--primary-dark);
  text-decoration: none;
}

.read-more:hover::after {
  transform: translateX(5px);
}