:root {
  /* Цветовая схема "Триада" */
  --primary-color: #FF5733; /* Оранжево-красный */
  --secondary-color: #33FF57; /* Зеленый */
  --tertiary-color: #3357FF; /* Синий */
  
  /* Оттенки основных цветов */
  --primary-dark: #D13D1F;
  --primary-light: #FF8066;
  --secondary-dark: #1FD144;
  --secondary-light: #66FF80;
  --tertiary-dark: #1F44D1;
  --tertiary-light: #6680FF;
  
  /* Нейтральные цвета */
  --dark: #222222;
  --light: #F8F9FA;
  --gray: #6C757D;
  --light-gray: #E9ECEF;
  
  /* Специальные цвета */
  --overlay-dark: rgba(0, 0, 0, 0.5);
  --overlay-light: rgba(255, 255, 255, 0.8);
  --card-bg: rgba(255, 255, 255, 0.95);
  --card-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  
  /* Шрифты */
  --heading-font: 'Manrope', sans-serif;
  --body-font: 'Rubik', sans-serif;
  
  /* Радиусы и отступы */
  --border-radius: 12px;
  --border-radius-lg: 20px;
  --border-radius-sm: 8px;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  
  /* Переходы */
  --transition-fast: 0.3s ease;
  --transition-medium: 0.5s ease;
  --transition-slow: 0.8s ease;
}

/* ===== Основные стили ===== */
body {
  font-family: var(--body-font);
  color: var(--dark);
  background-color: var(--light);
  line-height: 1.6;
  overflow-x: hidden;
  padding-top: 76px; /* Высота фиксированного навбара */
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--heading-font);
  font-weight: 700;
  margin-bottom: 1rem;
  line-height: 1.2;
}

p {
  margin-bottom: 1.5rem;
}

section {
  padding: var(--spacing-lg) 0;
  position: relative;
}

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

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

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

.section-title {
  position: relative;
  margin-bottom: var(--spacing-lg);
  color: var(--dark);
  font-weight: 800;
  text-transform: capitalize;
  z-index: 1;
}

.section-title::after {
  content: "";
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: var(--primary-color);
  border-radius: 2px;
}

/* ===== Кнопки ===== */
.btn, 
button, 
input[type="submit"] {
  display: inline-block;
  font-weight: 600;
  text-align: center;
  white-space: nowrap;
  vertical-align: middle;
  user-select: none;
  border: 1px solid transparent;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  line-height: 1.5;
  border-radius: var(--border-radius);
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
  z-index: 1;
  cursor: pointer;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.2);
  transition: all var(--transition-fast);
  z-index: -1;
}

.btn:hover::before {
  left: 0;
}

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

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

.btn-secondary {
  background-color: var(--secondary-color);
  border-color: var(--secondary-color);
  color: var(--dark);
}

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

.btn-tertiary {
  background-color: var(--tertiary-color);
  border-color: var(--tertiary-color);
  color: white;
}

.btn-tertiary:hover, .btn-tertiary:focus {
  background-color: var(--tertiary-dark);
  border-color: var(--tertiary-dark);
  color: white;
}

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

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

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.25rem;
}

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

/* ===== Карточки ===== */
.card {
  background-color: var(--card-bg);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--card-shadow);
  overflow: hidden;
  transition: transform var(--transition-medium), box-shadow var(--transition-medium);
  margin-bottom: var(--spacing-md);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

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

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

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

.card-content {
  padding: var(--spacing-md);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card-content h3 {
  color: var(--dark);
  margin-bottom: var(--spacing-sm);
  font-weight: 700;
}

.card-content p {
  color: var(--gray);
  margin-bottom: var(--spacing-sm);
}

/* ===== Навигация ===== */
.navbar {
  background-color: rgba(0, 0, 0, 0.9);
  padding: 1rem 0;
  transition: all var(--transition-fast);
}

.navbar-dark .navbar-brand {
  color: white;
  font-family: var(--heading-font);
  font-weight: 800;
  font-size: 1.75rem;
}

.navbar-dark .navbar-nav .nav-link {
  color: rgba(255, 255, 255, 0.8);
  font-weight: 500;
  padding: 0.5rem 1rem;
  transition: color var(--transition-fast);
}

.navbar-dark .navbar-nav .nav-link:hover,
.navbar-dark .navbar-nav .nav-link:focus {
  color: white;
}

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

.navbar-toggler-icon {
  width: 1.5em;
  height: 1.5em;
}

/* ===== Параллакс секции ===== */
.parallax-section {
  background-attachment: fixed;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  position: relative;
  padding: var(--spacing-lg) 0;
  color: white;
}

.parallax-section .overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(0, 0, 0, 0.7) 0%, rgba(0, 0, 0, 0.5) 100%);
}

.parallax-section .container {
  position: relative;
  z-index: 2;
}

/* ===== Hero секция ===== */
.hero-section {
  padding: 150px 0;
  text-align: center;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  margin-bottom: var(--spacing-sm);
  color: white;
  text-shadow: 2px 2px 5px rgba(0, 0, 0, 0.5);
}

.hero-subtitle {
  font-size: 1.5rem;
  font-weight: 400;
  margin-bottom: var(--spacing-md);
  color: white;
  text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
}

/* ===== Методология ===== */
.methodology-section {
  background-color: var(--light);
}

.methodology-card .card-image {
  height: 250px;
}

.methodology-card h3 {
  color: var(--primary-color);
}

.progress-container {
  margin-bottom: var(--spacing-md);
}

.progress-container h4 {
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}

.progress {
  height: 10px;
  border-radius: 5px;
  background-color: var(--light-gray);
  overflow: hidden;
}

.progress-bar {
  background-color: var(--primary-color);
  transition: width var(--transition-slow);
}

/* ===== Портфолио ===== */
.portfolio-section {
  color: white;
}

.portfolio-card {
  background-color: var(--overlay-light);
  color: var(--dark);
}

.portfolio-card .card-image {
  height: 350px;
}

.portfolio-card h3 {
  color: var(--primary-color);
}

.portfolio-stats {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  margin-top: var(--spacing-sm);
}

.portfolio-stats span {
  margin-right: var(--spacing-sm);
  margin-bottom: var(--spacing-xs);
  font-size: 0.9rem;
  color: var(--gray);
}

/* ===== Исследования ===== */
.research-section {
  background-color: var(--light);
}

.research-card .card-image {
  height: 250px;
}

.research-card h3 {
  color: var(--tertiary-color);
}

/* ===== Ресурсы ===== */
.resources-section {
  color: white;
}

.resources-intro {
  margin-bottom: var(--spacing-md);
  font-size: 1.2rem;
}

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

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

.resource-card h3 {
  color: var(--tertiary-color);
}

.resource-card .btn {
  margin-top: auto;
}

/* ===== Специалисты ===== */
.instructors-section {
  background-color: var(--light);
}

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

.instructor-card .card-image {
  height: 300px;
  width: 100%;
}

.instructor-card .card-image img {
  object-fit: cover;
  border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
}

.instructor-position {
  color: var(--primary-color);
  font-weight: 500;
  margin-bottom: var(--spacing-sm);
}

/* ===== События ===== */
.events-section {
  color: white;
}

.event-card {
  overflow: hidden;
  background-color: var(--overlay-light);
  color: var(--dark);
}

.event-card .card-image {
  height: 100%;
}

.event-card .card-content {
  padding: var(--spacing-md);
}

.event-date {
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: var(--spacing-xs);
}

.event-details {
  display: flex;
  flex-wrap: wrap;
  margin-bottom: var(--spacing-sm);
}

.event-details span {
  margin-right: var(--spacing-md);
  color: var(--gray);
  font-size: 0.9rem;
}

/* ===== Пресса ===== */
.press-section {
  background-color: var(--light);
}

.press-card .card-image {
  height: 250px;
}

.press-source {
  font-weight: 700;
  color: var(--tertiary-color);
  margin-bottom: var(--spacing-xs);
}

.press-date {
  color: var(--gray);
  font-size: 0.9rem;
  margin-top: var(--spacing-sm);
}

/* ===== Партнеры ===== */
.partners-section {
  text-align: center;
  background-color: var(--light);
}

.partner-item {
  margin-bottom: var(--spacing-md);
  padding: var(--spacing-sm);
  transition: transform var(--transition-fast);
}

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

.partner-item img {
  max-height: 100px;
  margin-bottom: var(--spacing-sm);
}

.partner-item h4 {
  font-size: 1.1rem;
  margin-bottom: 0;
}

/* ===== Награды ===== */
.awards-section {
  color: white;
}

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

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

.award-card h3 {
  color: var(--primary-color);
}

.award-year {
  display: inline-block;
  background-color: var(--primary-color);
  color: white;
  padding: 0.25rem 1rem;
  border-radius: 30px;
  font-weight: 700;
  margin-top: var(--spacing-sm);
}

/* ===== Устойчивое развитие ===== */
.sustainability-section {
  background-color: var(--light);
}

.sustainability-image {
  margin-bottom: var(--spacing-md);
}

.sustainability-content h3 {
  color: var(--secondary-color);
  margin-bottom: var(--spacing-sm);
}

.sustainability-stats {
  display: flex;
  justify-content: space-between;
  margin-top: var(--spacing-md);
}

.stat-item {
  text-align: center;
  padding: var(--spacing-sm);
  background-color: var(--light-gray);
  border-radius: var(--border-radius);
  width: 48%;
}

.stat-item h4 {
  font-size: 2.5rem;
  color: var(--secondary-color);
  margin-bottom: var(--spacing-xs);
}

.stat-item p {
  margin-bottom: 0;
  font-size: 0.9rem;
}

/* ===== Контакты ===== */
.contact-section {
  color: white;
}

.contact-info {
  margin-bottom: var(--spacing-md);
}

.contact-info h3 {
  margin-bottom: var(--spacing-sm);
}

.contact-item {
  display: flex;
  align-items: flex-start;
  margin-bottom: var(--spacing-sm);
}

.contact-item i {
  font-size: 1.5rem;
  margin-right: var(--spacing-sm);
  color: var(--primary-color);
}

.contact-form-container {
  background-color: var(--overlay-light);
  padding: var(--spacing-md);
  border-radius: var(--border-radius-lg);
  color: var(--dark);
}

.contact-form label {
  font-weight: 500;
}

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

.form-control:focus, .form-select:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 0.2rem rgba(255, 87, 51, 0.25);
}

/* ===== Футер ===== */
.footer-section {
  background-color: var(--dark);
  color: white;
  padding: var(--spacing-lg) 0 var(--spacing-sm);
}

.footer-about h3, .footer-links h3, .footer-newsletter h3 {
  color: white;
  margin-bottom: var(--spacing-md);
  position: relative;
  padding-bottom: 10px;
}

.footer-about h3::after, .footer-links h3::after, .footer-newsletter h3::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 50px;
  height: 3px;
  background-color: var(--primary-color);
}

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

.footer-links ul li {
  margin-bottom: var(--spacing-xs);
}

.footer-links ul li a {
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-fast);
}

.footer-links ul li a:hover {
  color: white;
  text-decoration: none;
}

.social-links {
  margin-top: var(--spacing-sm);
}

.social-links a {
  display: inline-block;
  margin-right: var(--spacing-sm);
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-fast);
}

.social-links a:hover {
  color: white;
  text-decoration: none;
}

.footer-newsletter p {
  margin-bottom: var(--spacing-sm);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-sm);
}

.copyright {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.7);
}

.footer-legal {
  display: flex;
  justify-content: flex-end;
}

.footer-legal a {
  margin-left: var(--spacing-md);
  color: rgba(255, 255, 255, 0.7);
}

/* ===== Cookie Consent ===== */
.cookie-consent {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background-color: rgba(0, 0, 0, 0.9);
  color: white;
  z-index: 9999;
  padding: var(--spacing-sm);
}

.cookie-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

.cookie-content p {
  margin-bottom: 0;
  margin-right: var(--spacing-sm);
}

/* ===== Страницы Terms и Privacy ===== */
.page-content {
  padding-top: 100px;
  padding-bottom: var(--spacing-lg);
}

.page-title {
  margin-bottom: var(--spacing-lg);
  color: var(--dark);
  position: relative;
  padding-bottom: var(--spacing-sm);
}

.page-title::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100px;
  height: 4px;
  background-color: var(--primary-color);
}

/* ===== Страница Success ===== */
.success-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--spacing-lg) 0;
}

.success-icon {
  font-size: 5rem;
  color: var(--secondary-color);
  margin-bottom: var(--spacing-md);
}

.success-title {
  color: var(--dark);
  margin-bottom: var(--spacing-sm);
}

.success-message {
  max-width: 600px;
  margin: 0 auto var(--spacing-md);
}

/* ===== Медиа запросы ===== */
@media (max-width: 991.98px) {
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-subtitle {
    font-size: 1.2rem;
  }
  
  .event-card .row {
    flex-direction: column;
  }
  
  .event-card .card-image {
    height: 250px;
  }
  
  .contact-info {
    margin-bottom: var(--spacing-lg);
  }
  
  .footer-about, .footer-links, .footer-newsletter {
    margin-bottom: var(--spacing-md);
  }
}

@media (max-width: 767.98px) {
  .section-title {
    font-size: 1.75rem;
  }
  
  .card-image {
    height: auto !important;
  }
  
  .sustainability-stats {
    flex-direction: column;
  }
  
  .stat-item {
    width: 100%;
    margin-bottom: var(--spacing-sm);
  }
  
  .cookie-content {
    flex-direction: column;
    text-align: center;
  }
  
  .cookie-content p {
    margin-bottom: var(--spacing-sm);
    margin-right: 0;
  }
  
  .footer-legal {
    justify-content: flex-start;
    margin-top: var(--spacing-sm);
  }
  
  .footer-legal a {
    margin-left: 0;
    margin-right: var(--spacing-md);
  }
}

@media (max-width: 575.98px) {
  .hero-section {
    padding: 100px 0;
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }
  
  .btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
  }
  
  .contact-form-container {
    padding: var(--spacing-sm);
  }
}