:root {
  /* Цветовая схема "Раздельно-дополнительная" */
  --primary-color: #2b5797; /* Основной синий */
  --primary-dark: #1a4480;
  --primary-light: #4a76b5;
  
  --secondary-color: #ff6b35; /* Дополнительный оранжевый */
  --secondary-dark: #e54e17;
  --secondary-light: #ff8c5f;
  
  --accent-color: #7fb800; /* Акцентный зеленый */
  --accent-dark: #5c8c00;
  --accent-light: #9ed532;
  
  --dark-color: #333333;
  --light-color: #ffffff;
  --gray-color: #f8f9fa;
  --medium-gray: #6c757d;
  --light-gray: #e9ecef;
  
  /* Размеры шрифтов для адаптивной типографики */
  --fs-display: clamp(2.5rem, 5vw, 4rem);
  --fs-h1: clamp(2rem, 4vw, 3.5rem);
  --fs-h2: clamp(1.75rem, 3.5vw, 3rem);
  --fs-h3: clamp(1.5rem, 3vw, 2.5rem);
  --fs-h4: clamp(1.25rem, 2.5vw, 2rem);
  --fs-h5: clamp(1.1rem, 2vw, 1.75rem);
  --fs-h6: clamp(1rem, 1.5vw, 1.5rem);
  --fs-body: clamp(1rem, 1.25vw, 1.125rem);
  --fs-small: clamp(0.875rem, 1vw, 1rem);
  
  /* Параметры теней и эффектов */
  --box-shadow: 0 4px 28px rgba(0, 0, 0, 0.1);
  --hover-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
  --card-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
  --text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
  
  /* Переходы и анимации */
  --transition-fast: all 0.3s ease;
  --transition-medium: all 0.5s ease;
  --transition-slow: all 0.8s ease;
  
  /* Скругления */
  --border-radius-sm: 0.25rem;
  --border-radius: 0.5rem;
  --border-radius-lg: 1rem;
  --border-radius-xl: 2rem;
  
  /* Параметры градиентов */
  --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-overlay: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.3));
  --gradient-overlay-light: linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.1));
}

/* Базовые стили */
body {
  font-family: 'Merriweather', serif;
  color: var(--dark-color);
  line-height: 1.7;
  font-size: var(--fs-body);
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6, .navbar-brand, .btn, .nav-link {
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
}

h1, .h1 {
  font-size: var(--fs-h1);
  margin-bottom: 1.5rem;
}

h2, .h2 {
  font-size: var(--fs-h2);
  margin-bottom: 1.25rem;
}

h3, .h3 {
  font-size: var(--fs-h3);
  margin-bottom: 1rem;
}

h4, .h4 {
  font-size: var(--fs-h4);
  margin-bottom: 0.75rem;
}

h5, .h5 {
  font-size: var(--fs-h5);
  margin-bottom: 0.5rem;
}

.display-3, .display-4 {
  font-weight: 700;
  letter-spacing: -0.02em;
}

p {
  margin-bottom: 1.5rem;
}

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

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

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

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

.bg-light {
  background-color: var(--gray-color) !important;
}

.bg-dark {
  background-color: var(--dark-color) !important;
}

.text-white {
  color: var(--light-color) !important;
}

.text-primary {
  color: var(--primary-color) !important;
}

.text-secondary {
  color: var(--secondary-color) !important;
}

.text-accent {
  color: var(--accent-color) !important;
}

.text-muted {
  color: var(--medium-gray) !important;
}

/* Кнопки и интерактивные элементы */
.btn {
  font-weight: 600;
  letter-spacing: 0.03em;
  padding: 0.625rem 1.5rem;
  border-radius: var(--border-radius);
  transition: var(--transition-fast);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  text-transform: uppercase;
  font-size: 0.9rem;
  border: none;
}

.btn:hover {
  transform: translateY(-3px);
  box-shadow: var(--hover-shadow);
}

.btn:active {
  transform: translateY(1px);
}

.btn-lg {
  padding: 0.75rem 2rem;
  font-size: 1rem;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--light-color);
}

.btn-primary:hover, .btn-primary:focus {
  background: var(--primary-dark);
  color: var(--light-color);
}

.btn-secondary {
  background: var(--gradient-secondary);
  color: var(--light-color);
}

.btn-secondary:hover, .btn-secondary:focus {
  background: var(--secondary-dark);
  color: var(--light-color);
}

.btn-accent {
  background: var(--gradient-accent);
  color: var(--light-color);
}

.btn-accent:hover, .btn-accent:focus {
  background: var(--accent-dark);
  color: var(--light-color);
}

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

.btn-outline-light:hover, .btn-outline-light:focus {
  background: rgba(255, 255, 255, 0.1);
  color: var(--light-color);
}

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

.btn-outline-primary:hover, .btn-outline-primary:focus {
  background: rgba(43, 87, 151, 0.1);
  color: var(--primary-color);
}

/* Навигация */
.navbar {
  padding: 1rem 0;
  transition: var(--transition-fast);
}

.navbar-dark {
  background-color: rgba(33, 37, 41, 0.95) !important;
}

.navbar-brand {
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--light-color);
}

.navbar-brand span {
  background: linear-gradient(90deg, var(--primary-light), var(--secondary-light));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  display: inline-block;
  transform: perspective(500px) rotateX(0deg);
  transition: var(--transition-medium);
}

.navbar-brand:hover span {
  transform: perspective(500px) rotateX(10deg);
}

.nav-link {
  color: var(--light-color) !important;
  font-weight: 500;
  padding: 6px 10px !important;
  margin: 0 0.25rem;
  border-radius: var(--border-radius);
  transition: var(--transition-fast);
  font-size: 16px;
}

.nav-link:hover, .nav-link:focus {
  background-color: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

.navbar-toggler {
  border: none;
  padding: 0.25rem 0.5rem;
}

.navbar-toggler:focus {
  box-shadow: none;
}

/* Hero секция */
#hero {
  position: relative;
  background-size: cover !important;
  background-position: center !important;
  background-repeat: no-repeat !important;
  overflow: hidden;
  padding: 0;
  margin-top: 76px; /* Высота фиксированного header */
}

#hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-overlay);
  z-index: 1;
}

#hero .container {
  position: relative;
  z-index: 2;
}

#hero h1 {
  font-weight: 800;
  margin-bottom: 1.5rem;
  color: var(--light-color);
  text-shadow: var(--text-shadow);
  transform: perspective(1000px) rotateX(0deg);
  transition: var(--transition-medium);
}

#hero h1:hover {
  transform: perspective(1000px) rotateX(5deg);
}

#hero p {
  font-size: var(--fs-h5);
  margin-bottom: 2rem;
  color: var(--light-color);
  text-shadow: var(--text-shadow);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

/* Features секция */
#caracteristicas .card {
  transition: var(--transition-medium);
  border-radius: var(--border-radius);
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  box-shadow: var(--card-shadow);
  transform: perspective(1000px) rotateY(0deg);
}

#caracteristicas .card:hover {
  transform: perspective(1000px) rotateY(5deg) translateY(-10px);
  box-shadow: var(--hover-shadow);
}

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

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

#caracteristicas .card:hover .card-img-top {
  transform: scale(1.05);
}

#caracteristicas .card-body {
  padding: 2rem;
  text-align: center;
  flex: 1;
  display: flex;
  flex-direction: column;
}

#caracteristicas .card-text {
  transition: var(--transition-medium);
  margin-bottom: 1.5rem;
  flex: 1;
}

#caracteristicas .form-check-input {
  width: 3rem;
  height: 1.5rem;
  margin-top: 0.25rem;
  cursor: pointer;
}

#caracteristicas .form-check-label {
  cursor: pointer;
}

/* Accolades секция */
#reconocimientos {
  background-color: var(--dark-color);
}

#reconocimientos .card {
  background: transparent;
  transition: var(--transition-medium);
  border-radius: var(--border-radius);
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  transform: perspective(1000px) rotateY(0deg);
}

#reconocimientos .card:hover {
  transform: perspective(1000px) rotateY(5deg) translateY(-10px);
  border-color: var(--primary-light) !important;
}

#reconocimientos .card-body {
  padding: 2rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

#reconocimientos .rounded-circle {
  border: 3px solid var(--primary-light);
  padding: 0.25rem;
  transition: var(--transition-medium);
  box-shadow: 0 0 15px rgba(255, 255, 255, 0.2);
}

#reconocimientos .card:hover .rounded-circle {
  transform: scale(1.1);
  box-shadow: 0 0 25px rgba(255, 255, 255, 0.4);
}

/* External Resources секция */
#recursos .card {
  transition: var(--transition-medium);
  border-radius: var(--border-radius);
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  box-shadow: var(--card-shadow);
  transform: perspective(1000px) rotateY(0deg);
}

#recursos .card:hover {
  transform: perspective(1000px) rotateY(5deg) translateY(-10px);
  box-shadow: var(--hover-shadow);
}

#recursos .card-image {
  overflow: hidden;
  width: 100%;
  height: 200px;
}

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

#recursos .card:hover .card-img-top {
  transform: scale(1.05);
}

#recursos .card-body {
  padding: 2rem;
  text-align: center;
  flex: 1;
  display: flex;
  flex-direction: column;
}

/* Testimonials секция */
#testimonios {
  background-size: cover !important;
  background-position: center !important;
  background-repeat: no-repeat !important;
  background-attachment: fixed !important;
  position: relative;
}

#testimonios::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-overlay);
  z-index: 1;
}

#testimonios .container {
  position: relative;
  z-index: 2;
}

#testimonios .card {
  transition: var(--transition-medium);
  border-radius: var(--border-radius);
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: var(--light-color);
  box-shadow: var(--card-shadow);
  transform: perspective(1000px) rotateY(0deg);
}

#testimonios .card:hover {
  transform: perspective(1000px) rotateY(5deg) translateY(-10px);
  box-shadow: var(--hover-shadow);
}

#testimonios .card-image {
  overflow: hidden;
  width: 100%;
  height: 300px;
}

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

#testimonios .card:hover .card-img-top {
  transform: scale(1.05);
}

#testimonios .card-body {
  padding: 2rem;
  text-align: center;
  flex: 1;
  display: flex;
  flex-direction: column;
}

/* Partners секция */
#socios .image-container {
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 150px;
  width: 150px;
  margin: 0 auto;
  padding: 1.5rem;
  border-radius: 50%;
  background-color: var(--light-color);
  box-shadow: var(--card-shadow);
  transition: var(--transition-medium);
  transform: perspective(1000px) rotateY(0deg);
}

#socios .image-container:hover {
  transform: perspective(1000px) rotateY(10deg) scale(1.05);
  box-shadow: var(--hover-shadow);
}

#socios img {
  max-width: 100%;
  max-height: 100%;
  transition: var(--transition-medium);
}

#socios .image-container:hover img {
  transform: scale(1.1);
}

/* Contact секция */
#contacto {
  background-color: var(--dark-color);
}

#contacto .card {
  border: none;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--card-shadow);
  transition: var(--transition-medium);
  transform: perspective(1000px) rotateY(0deg);
}

#contacto .card:hover {
  transform: perspective(1000px) rotateY(3deg);
  box-shadow: var(--hover-shadow);
}

#contacto .form-control {
  padding: 0.75rem 1rem;
  border-radius: var(--border-radius);
  border: 1px solid var(--light-gray);
  transition: var(--transition-fast);
}

#contacto .form-control:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 0.25rem rgba(43, 87, 151, 0.25);
}

#contacto .form-label {
  font-weight: 500;
  margin-bottom: 0.5rem;
}

#contacto .form-select {
  padding: 0.75rem 1rem;
  border-radius: var(--border-radius);
  border: 1px solid var(--light-gray);
  transition: var(--transition-fast);
}

#contacto .form-select:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 0.25rem rgba(43, 87, 151, 0.25);
}

/* Footer */
footer {
  background-color: var(--dark-color);
  color: var(--light-color);
  padding: 4rem 0 2rem;
}

footer h3 {
  margin-bottom: 1.5rem;
  position: relative;
  display: inline-block;
}

footer h3::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -0.5rem;
  width: 50px;
  height: 2px;
  background-color: var(--primary-light);
}

footer ul {
  padding-left: 0;
}

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

footer a:hover {
  color: var(--primary-light);
  text-decoration: none;
  padding-left: 5px;
}

footer hr {
  border-color: rgba(255, 255, 255, 0.1);
}

/* Cookie Consent */
#cookieConsent {
  transition: var(--transition-medium);
  transform: translateY(0);
}

#cookieConsent.hide {
  transform: translateY(100%);
}

/* Success Page */
.success-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
  background: linear-gradient(45deg, var(--primary-light), var(--primary-color));
}

.success-page .content {
  background: var(--light-color);
  padding: 3rem;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  max-width: 600px;
  width: 100%;
  transform: perspective(1000px) rotateX(0deg);
  transition: var(--transition-medium);
}

.success-page .content:hover {
  transform: perspective(1000px) rotateX(5deg);
}

/* About, Privacy, Terms Pages */
.page-content {
  padding-top: 120px;
  padding-bottom: 5rem;
}

.page-header {
  margin-bottom: 3rem;
  text-align: center;
}

.page-header h1 {
  font-size: var(--fs-display);
  font-weight: 800;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.page-header p {
  font-size: var(--fs-h5);
  color: var(--medium-gray);
  max-width: 800px;
  margin: 0 auto;
}

/* Read More Links */
.read-more {
  display: inline-block;
  font-weight: 600;
  color: var(--primary-color);
  text-decoration: none;
  padding: 0.25rem 0;
  position: relative;
  transition: var(--transition-fast);
}

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

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

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

/* Social Media Links */
.social-links {
  display: flex;
  gap: 1rem;
}

.social-links a {
  color: var(--light-color);
  font-size: 1.2rem;
  transition: var(--transition-fast);
}

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

/* 3D эффекты и трансформации */
.parallax-item {
  transform-style: preserve-3d;
  perspective: 1000px;
}

.parallax-item:hover {
  transform: translateZ(20px);
}

.rotate-hover {
  transition: var(--transition-medium);
}

.rotate-hover:hover {
  transform: rotateY(10deg);
}

/* Адаптивная типографика и отзывчивый дизайн */
@media (max-width: 991.98px) {
  .navbar-collapse {
    background-color: rgba(33, 37, 41, 0.95);
    padding: 1rem;
    border-radius: var(--border-radius);
    margin-top: 0.5rem;
  }
  
  .nav-link {
    margin: 0.25rem 0;
  }
  
  #hero {
    text-align: center;
  }
  
  section {
    padding: 4rem 0;
  }
}

@media (max-width: 767.98px) {
  :root {
    --fs-display: clamp(2rem, 4vw, 3rem);
    --fs-h1: clamp(1.75rem, 3.5vw, 2.5rem);
    --fs-h2: clamp(1.5rem, 3vw, 2.25rem);
    --fs-h3: clamp(1.25rem, 2.5vw, 2rem);
    --fs-h4: clamp(1.1rem, 2vw, 1.75rem);
    --fs-h5: clamp(1rem, 1.5vw, 1.5rem);
  }
  
  section {
    padding: 3rem 0;
  }
  
  .btn {
    padding: 0.5rem 1.25rem;
  }
  
  .btn-lg {
    padding: 0.625rem 1.5rem;
  }
}

@media (max-width: 575.98px) {
  section {
    padding: 2.5rem 0;
  }
  
  #hero {
    height: auto;
    min-height: 80vh;
  }
  
  #hero .container {
    padding-top: 3rem;
    padding-bottom: 3rem;
  }
  
  footer {
    text-align: center;
  }
  
  footer h3::after {
    left: 50%;
    transform: translateX(-50%);
  }
}

/* Animations with AOS enhancements */
[data-aos="custom-fade-up"] {
  opacity: 0;
  transform: translate3d(0, 30px, 0) perspective(1000px) rotateX(5deg);
  transition-property: opacity, transform;
}

[data-aos="custom-fade-up"].aos-animate {
  opacity: 1;
  transform: translate3d(0, 0, 0) perspective(1000px) rotateX(0);
}

[data-aos="custom-zoom-in"] {
  opacity: 0;
  transform: scale3d(0.8, 0.8, 0.8) perspective(1000px) rotateY(5deg);
  transition-property: opacity, transform;
}

[data-aos="custom-zoom-in"].aos-animate {
  opacity: 1;
  transform: scale3d(1, 1, 1) perspective(1000px) rotateY(0);
}

/* Ensure all images in cards are centered */
.card-image {
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
}

.image-container img {
  margin: 0 auto;
  display: block;
}

/* For all cards with images */
.card {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.card-content {
  text-align: center;
}