:root {
  /* Основная цветовая схема (Раздельно-дополнительная) */
  --primary-color: #ff6b6b;
  --primary-dark: #e74c4c;
  --primary-light: #ff8c8c;
  --secondary-color: #4ecdc4;
  --secondary-dark: #3dafa8;
  --secondary-light: #6cded6;
  --accent-color: #ffe66d;
  --accent-dark: #f0d752;
  --accent-light: #fff2a0;
  
  /* Нейтральные цвета */
  --dark: #2d3436;
  --dark-medium: #636e72;
  --medium: #b2bec3;
  --light-medium: #dfe6e9;
  --light: #f7f7f7;
  
  /* Типографика */
  --heading-font: 'Playfair Display', serif;
  --body-font: 'Source Sans Pro', sans-serif;
  
  /* Размеры */
  --container-width: 1200px;
  --container-padding: 2rem;
  --section-spacing: 6rem;
  --element-spacing: 2rem;
  
  /* Тени */
  --card-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
  --hover-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
  
  /* Переходы */
  --transition-fast: 0.3s ease;
  --transition-medium: 0.5s ease;
  --transition-slow: 0.8s ease;
  
  /* Радиусы */
  --radius-small: 4px;
  --radius-medium: 8px;
  --radius-large: 16px;
}

/* Сброс и базовые стили */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 62.5%; /* 1rem = 10px */
}

body {
  font-family: var(--body-font);
  font-size: 1.6rem;
  line-height: 1.6;
  color: var(--dark);
  background-color: var(--light);
  overflow-x: hidden;
}

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

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

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--heading-font);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 2rem;
  color: var(--dark);
}

h1 {
  font-size: 4.8rem;
}

h2 {
  font-size: 3.6rem;
}

h3 {
  font-size: 2.8rem;
}

h4 {
  font-size: 2.4rem;
}

h5 {
  font-size: 2rem;
}

h6 {
  font-size: 1.8rem;
}

p {
  margin-bottom: 2rem;
}

ul, ol {
  margin-bottom: 2rem;
  padding-left: 2rem;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* Кнопки */
.btn, 
button, 
input[type="submit"] {
  display: inline-block;
  padding: 1.2rem 2.4rem;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: var(--radius-medium);
  font-family: var(--body-font);
  font-weight: 600;
  font-size: 1.6rem;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.btn:hover, 
button:hover, 
input[type="submit"]:hover {
  background-color: var(--primary-dark);
  transform: translateY(-3px);
  box-shadow: 0 7px 14px rgba(0, 0, 0, 0.15);
  text-decoration: none;
}

.btn:active, 
button:active, 
input[type="submit"]:active {
  transform: translateY(-1px);
  box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
}

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

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

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

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

/* Секция заголовка */
.section-title {
  text-align: center;
  margin-bottom: 4rem;
  position: relative;
  padding-bottom: 2rem;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: var(--primary-color);
  border-radius: var(--radius-small);
}

/* Header */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2rem;
}

.logo h1 {
  margin: 0;
  font-size: 2.4rem;
  color: var(--primary-color);
  font-weight: 700;
}

.desktop-nav ul {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
}

.desktop-nav ul li {
  margin-left: 3rem;
}

.desktop-nav ul li a {
  color: var(--dark);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 1.6rem;
  letter-spacing: 1px;
  position: relative;
  padding: 0.5rem 0;
}

.desktop-nav ul li a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-color);
  transition: width var(--transition-fast);
}

.desktop-nav ul li a:hover::after {
  width: 100%;
}

.burger-menu {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 20px;
  cursor: pointer;
}

.burger-menu span {
  display: block;
  width: 100%;
  height: 3px;
  background-color: var(--dark);
  transition: all var(--transition-fast);
}

.mobile-nav {
  display: none;
  position: fixed;
  top: 80px;
  left: 0;
  width: 100%;
  background-color: var(--light);
  padding: 2rem;
  box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
  transform: translateY(-100%);
  transition: transform var(--transition-medium);
  z-index: 999;
}

.mobile-nav.active {
  transform: translateY(0);
}

.mobile-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.mobile-nav ul li {
  margin-bottom: 1.5rem;
}

.mobile-nav ul li a {
  color: var(--dark);
  font-weight: 600;
  font-size: 1.8rem;
  display: block;
  padding: 1rem 0;
  border-bottom: 1px solid var(--light-medium);
}

.burger-menu.active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.burger-menu.active span:nth-child(2) {
  opacity: 0;
}

.burger-menu.active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Hero Section */
.hero {
  height: 100vh;
  min-height: 600px;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: white;
  margin-bottom: var(--section-spacing);
  background-attachment: fixed;
}

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

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  padding: 0 2rem;
}

.hero-content h1 {
  font-size: 6rem;
  margin-bottom: 2rem;
  color: white;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.hero-content h2 {
  font-size: 3rem;
  margin-bottom: 3rem;
  color: white;
  text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
}

.hero-content p {
  font-size: 2rem;
  margin-bottom: 4rem;
  color: white;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

/* Services Section */
.services {
  padding: 8rem 0;
  background-color: var(--light);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 3rem;
}

.card {
  background-color: white;
  border-radius: var(--radius-medium);
  overflow: hidden;
  box-shadow: var(--card-shadow);
  transition: transform var(--transition-medium), box-shadow var(--transition-medium);
  display: flex;
  flex-direction: column;
  align-items: center;
}

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

.card-image {
  width: 100%;
  height: 250px;
  overflow: hidden;
}

.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: 2rem;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.card-content h3 {
  font-size: 2.4rem;
  margin-bottom: 1.5rem;
  color: var(--dark);
}

.card-content p {
  margin-bottom: 2rem;
  color: var(--dark-medium);
}

.toggle-switch {
  margin-top: auto;
  width: 100%;
}

.toggle-label {
  display: inline-block;
  padding: 1rem 2rem;
  background-color: var(--secondary-color);
  color: white;
  border-radius: var(--radius-small);
  cursor: pointer;
  transition: background-color var(--transition-fast);
  text-align: center;
  width: 100%;
}

.toggle-label:hover {
  background-color: var(--secondary-dark);
}

.toggle-input {
  display: none;
}

.toggle-content {
  display: none;
  margin-top: 1.5rem;
  padding: 1.5rem;
  background-color: var(--light-medium);
  border-radius: var(--radius-small);
}

.toggle-input:checked + .toggle-label {
  background-color: var(--secondary-dark);
}

/* Accolades Section */
.accolades {
  padding: 8rem 0;
  background-color: var(--light-medium);
}

.accolades-content {
  display: flex;
  flex-wrap: wrap;
  gap: 4rem;
  align-items: center;
}

.accolades-text {
  flex: 1;
  min-width: 300px;
}

.accolades-badges {
  flex: 1;
  min-width: 300px;
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: 2rem;
}

.badge {
  text-align: center;
  padding: 2rem;
  background-color: white;
  border-radius: var(--radius-medium);
  box-shadow: var(--card-shadow);
  transition: transform var(--transition-fast);
}

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

.badge img {
  width: 120px;
  height: 120px;
  object-fit: cover;
  border-radius: 50%;
  margin: 0 auto 1.5rem;
  border: 3px solid var(--primary-color);
}

.badge p {
  margin-bottom: 0;
  font-weight: 600;
  color: var(--dark);
}

/* Media Section */
.media {
  padding: 8rem 0;
  background-color: var(--light);
}

.media-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 3rem;
}

.media-item {
  background-color: white;
  border-radius: var(--radius-medium);
  overflow: hidden;
  box-shadow: var(--card-shadow);
  transition: transform var(--transition-medium);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.media-item:hover {
  transform: translateY(-10px);
}

.media-item .image-container {
  width: 100%;
  height: 220px;
  overflow: hidden;
}

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

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

.media-item h3 {
  padding: 2rem 2rem 1rem;
  text-align: center;
}

.media-item p {
  padding: 0 2rem 2rem;
  text-align: center;
}

/* Resources Section */
.resources {
  padding: 8rem 0;
  background-color: var(--light-medium);
}

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

.resources-content > p {
  max-width: 800px;
  margin: 0 auto 4rem;
}

.resources-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 3rem;
}

.resource-card {
  background-color: white;
  border-radius: var(--radius-medium);
  overflow: hidden;
  box-shadow: var(--card-shadow);
  transition: transform var(--transition-medium);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.resource-card:hover {
  transform: translateY(-10px);
}

.resource-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.resource-card h3 {
  padding: 2rem 2rem 1rem;
  text-align: center;
}

.resource-card p {
  padding: 0 2rem;
  text-align: center;
}

.resource-card a {
  display: inline-block;
  margin: 1rem 0 2rem;
  padding: 1rem 2rem;
  background-color: var(--secondary-color);
  color: white;
  border-radius: var(--radius-small);
  transition: background-color var(--transition-fast);
  font-weight: 600;
}

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

/* Research Section */
.research {
  padding: 8rem 0;
  background-color: var(--light);
}

.research-content {
  display: flex;
  flex-wrap: wrap;
  gap: 4rem;
  align-items: center;
}

.research-image {
  flex: 1;
  min-width: 300px;
}

.research-image img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-medium);
  box-shadow: var(--card-shadow);
}

.research-text {
  flex: 1;
  min-width: 300px;
}

.research-text h3 {
  margin-bottom: 2rem;
  color: var(--primary-color);
}

/* Sustainability Section */
.sustainability {
  padding: 8rem 0;
  background-color: var(--light-medium);
}

.sustainability-content {
  display: flex;
  flex-wrap: wrap;
  gap: 4rem;
  align-items: center;
}

.sustainability-text {
  flex: 1;
  min-width: 300px;
}

.sustainability-image {
  flex: 1;
  min-width: 300px;
}

.sustainability-image img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-medium);
  box-shadow: var(--card-shadow);
}

/* Contact Section */
.contact {
  padding: 8rem 0;
  background-color: var(--light);
}

.contact-content {
  display: flex;
  flex-wrap: wrap;
  gap: 4rem;
}

.contact-info {
  flex: 1;
  min-width: 300px;
}

.contact-info h3 {
  margin-bottom: 2rem;
  color: var(--primary-color);
}

.contact-info ul {
  list-style: none;
  padding: 0;
  margin-bottom: 3rem;
}

.contact-info ul li {
  margin-bottom: 1.5rem;
  display: flex;
  align-items: flex-start;
}

.contact-info ul li strong {
  margin-right: 1rem;
  color: var(--dark);
}

.contact-hours h4 {
  margin-bottom: 1.5rem;
  font-size: 1.8rem;
}

.contact-hours p {
  margin-bottom: 1rem;
}

.contact-form {
  flex: 1;
  min-width: 300px;
}

.contact-form h3 {
  margin-bottom: 2rem;
  color: var(--primary-color);
}

.form-group {
  margin-bottom: 2rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.8rem;
  font-weight: 600;
  color: var(--dark);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 1.2rem;
  border: 1px solid var(--medium);
  border-radius: var(--radius-small);
  background-color: var(--light);
  font-family: var(--body-font);
  font-size: 1.6rem;
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(255, 107, 107, 0.2);
}

/* Footer */
footer {
  background-color: var(--dark);
  color: white;
  padding: 6rem 0 2rem;
}

.footer-content {
  display: flex;
  flex-wrap: wrap;
  gap: 4rem;
  margin-bottom: 4rem;
}

.footer-logo {
  flex: 1;
  min-width: 200px;
}

.footer-logo h3 {
  color: white;
  margin-bottom: 1rem;
}

.footer-logo p {
  color: var(--medium);
}

.footer-links {
  flex: 1;
  min-width: 200px;
}

.footer-links h4 {
  color: white;
  margin-bottom: 2rem;
  font-size: 1.8rem;
}

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

.footer-links ul li {
  margin-bottom: 1rem;
}

.footer-links ul li a {
  color: var(--medium);
  transition: color var(--transition-fast);
}

.footer-links ul li a:hover {
  color: var(--primary-color);
  text-decoration: none;
}

.footer-social {
  flex: 1;
  min-width: 200px;
}

.footer-social h4 {
  color: white;
  margin-bottom: 2rem;
  font-size: 1.8rem;
}

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

.footer-social ul li {
  margin-bottom: 1rem;
}

.footer-social ul li a {
  color: var(--medium);
  transition: color var(--transition-fast);
  font-weight: 600;
}

.footer-social ul li a:hover {
  color: var(--primary-color);
  text-decoration: none;
}

.footer-newsletter {
  flex: 1;
  min-width: 300px;
}

.footer-newsletter h4 {
  color: white;
  margin-bottom: 2rem;
  font-size: 1.8rem;
}

.footer-newsletter p {
  color: var(--medium);
  margin-bottom: 2rem;
}

.footer-newsletter form {
  display: flex;
}

.footer-newsletter input {
  flex-grow: 1;
  padding: 1.2rem;
  border: none;
  border-radius: var(--radius-small) 0 0 var(--radius-small);
  font-family: var(--body-font);
  font-size: 1.6rem;
}

.footer-newsletter button {
  border-radius: 0 var(--radius-small) var(--radius-small) 0;
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
  color: var(--medium);
  margin: 0;
  font-size: 1.4rem;
}

/* Success Page */
.success-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 4rem 2rem;
  background-color: var(--light);
}

.success-content {
  max-width: 700px;
  background-color: white;
  padding: 4rem;
  border-radius: var(--radius-medium);
  box-shadow: var(--card-shadow);
}

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

.success-content p {
  margin-bottom: 3rem;
}

/* Content Pages (privacy, terms) */
.content-page {
  padding-top: 100px;
  padding-bottom: 6rem;
}

.content-page .container {
  max-width: 800px;
}

.content-page h1 {
  margin-bottom: 3rem;
  color: var(--primary-color);
}

.content-page h2 {
  margin-top: 4rem;
  margin-bottom: 2rem;
  color: var(--dark);
}

.content-page p {
  margin-bottom: 2rem;
}

.content-page ul, 
.content-page ol {
  margin-bottom: 2rem;
}

/* Адаптивные стили */
@media (max-width: 1200px) {
  html {
    font-size: 60%;
  }
}

@media (max-width: 992px) {
  html {
    font-size: 58%;
  }
  
  .hero-content h1 {
    font-size: 5rem;
  }
  
  .hero-content h2 {
    font-size: 2.6rem;
  }
}

@media (max-width: 768px) {
  html {
    font-size: 56%;
  }
  
  .desktop-nav {
    display: none;
  }
  
  .burger-menu {
    display: flex;
  }
  
  .hero-content h1 {
    font-size: 4.2rem;
  }
  
  .hero-content h2 {
    font-size: 2.4rem;
  }
  
  .section-title {
    font-size: 3rem;
  }
  
  .research-content,
  .sustainability-content,
  .accolades-content {
    flex-direction: column;
  }
  
  .sustainability-image {
    order: -1;
  }
}

@media (max-width: 576px) {
  html {
    font-size: 54%;
  }
  
  .container {
    padding: 0 1.5rem;
  }
  
  .hero-content h1 {
    font-size: 3.6rem;
  }
  
  .hero-content h2 {
    font-size: 2rem;
  }
  
  .section-title {
    font-size: 2.8rem;
  }
  
  .footer-content > div {
    min-width: 100%;
  }
  
  .footer-newsletter form {
    flex-direction: column;
  }
  
  .footer-newsletter input {
    border-radius: var(--radius-small);
    margin-bottom: 1rem;
  }
  
  .footer-newsletter button {
    border-radius: var(--radius-small);
    width: 100%;
  }
}

/* Анимации */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fadeInUp {
  animation: fadeInUp 1s ease forwards;
}

@keyframes zoomIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.zoomIn {
  animation: zoomIn 1s ease forwards;
}

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

/* Утилиты */
.text-center {
  text-align: center;
}

.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }
.mt-4 { margin-top: 4rem; }
.mt-5 { margin-top: 5rem; }

.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }
.mb-4 { margin-bottom: 4rem; }
.mb-5 { margin-bottom: 5rem; }

.pt-1 { padding-top: 1rem; }
.pt-2 { padding-top: 2rem; }
.pt-3 { padding-top: 3rem; }
.pt-4 { padding-top: 4rem; }
.pt-5 { padding-top: 5rem; }

.pb-1 { padding-bottom: 1rem; }
.pb-2 { padding-bottom: 2rem; }
.pb-3 { padding-bottom: 3rem; }
.pb-4 { padding-bottom: 4rem; }
.pb-5 { padding-bottom: 5rem; }
.burger-menu{
  display: none;
}