:root {
  /* Основная цветовая палитра */
  --color-primary: #0066cc;
  --color-primary-dark: #004c99;
  --color-primary-light: #4d94ff;
  --color-secondary: #333333;
  --color-secondary-dark: #1a1a1a;
  --color-secondary-light: #666666;
  --color-accent: #ffcc00;
  --color-accent-dark: #e6b800;
  --color-accent-light: #ffd633;
  
  /* Нейтральные цвета */
  --color-white: #ffffff;
  --color-light: #f5f5f5;
  --color-light-gray: #e0e0e0;
  --color-gray: #999999;
  --color-dark-gray: #666666;
  --color-dark: #333333;
  --color-black: #1a1a1a;
  
  /* Функциональные цвета */
  --color-success: #28a745;
  --color-warning: #ffc107;
  --color-danger: #dc3545;
  --color-info: #17a2b8;
  
  /* Градиенты */
  --gradient-primary: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  --gradient-secondary: linear-gradient(135deg, var(--color-secondary), var(--color-secondary-dark));
  --gradient-accent: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  --gradient-overlay: linear-gradient(to bottom, rgba(0,0,0,0.1), rgba(0,0,0,0.7));
  
  /* 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(0,0,0,0.1);
  --shadow-xl: 0 12px 24px rgba(0,0,0,0.15);
  
  /* 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;
  
  /* Типографика */
  --font-heading: 'Oswald', sans-serif;
  --font-body: 'Nunito', sans-serif;
  
  /* Размеры */
  --container-width: 1280px;
  --header-height: 80px;
  --footer-padding: 60px;
  --section-padding: 80px;
  --grid-gap: 30px;
}

/* Сброс стилей */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-dark);
  background-color: var(--color-light);
  overflow-x: hidden;
}

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

h1 {
  font-size: 3.5rem;
}

h2 {
  font-size: 2.5rem;
  margin-bottom: 2rem;
}

h3 {
  font-size: 1.8rem;
  margin-bottom: 1.5rem;
}

h4 {
  font-size: 1.4rem;
  margin-bottom: 1rem;
}

p {
  margin-bottom: 1.5rem;
  font-size: 1rem;
}

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

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

ul, ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}

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

/* Утилиты */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
}

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

.text-right {
  text-align: right;
}

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

.bg-primary {
  background-color: var(--color-primary);
}

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

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

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

.mb-1 {
  margin-bottom: 0.5rem;
}

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

.mb-3 {
  margin-bottom: 1.5rem;
}

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

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

/* Кнопки */
.btn {
  display: inline-block;
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 1rem;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all var(--transition-medium);
  position: relative;
  overflow: hidden;
  z-index: 1;
  box-shadow: var(--shadow-md);
}

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

.btn:hover::before {
  width: 100%;
}

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

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover {
  background-color: var(--color-secondary-dark);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

.btn-outline:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

.btn-accent:hover {
  background-color: var(--color-accent-dark);
  color: var(--color-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-group {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
}

/* Хедер и навигация */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow-md);
  z-index: 1000;
  height: var(--header-height);
  display: flex;
  align-items: center;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.header-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.logo {
  display: flex;
  align-items: center;
}

.logo img {
  max-height: 60px;
  width: auto;
}

.nav-desktop {
  display: flex;
}

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

.nav-desktop li {
  margin: 0 1rem;
}

.nav-desktop a {
  color: var(--color-secondary);
  font-family: var(--font-heading);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: 0.9rem;
  padding: 0.5rem 0;
  position: relative;
}

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

.nav-desktop a:hover {
  color: var(--color-primary);
}

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

.hamburger-menu {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 21px;
  cursor: pointer;
}

.hamburger-menu span {
  display: block;
  height: 3px;
  width: 100%;
  background-color: var(--color-secondary);
  transition: all var(--transition-medium);
}

.nav-mobile {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  width: 100%;
  background-color: var(--color-white);
  padding: 1rem 0;
  box-shadow: var(--shadow-md);
  z-index: 999;
}

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

.nav-mobile li {
  margin: 0.5rem 0;
  text-align: center;
}

.nav-mobile a {
  display: block;
  padding: 0.5rem 1rem;
  color: var(--color-secondary);
  font-family: var(--font-heading);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: 1rem;
}

.nav-mobile a:hover {
  color: var(--color-primary);
}

/* Hero Section */
.hero {
  position: relative;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  margin-top: var(--header-height);
  overflow: hidden;
}

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

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
  padding: 0 20px;
}

.hero-content h1 {
  color: var(--color-white);
  margin-bottom: 1.5rem;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
  transform: translateY(20px);
  opacity: 0;
  animation: fadeInUp 1s forwards 0.5s;
}

.hero-content p {
  color: var(--color-white);
  font-size: 1.2rem;
  margin-bottom: 2rem;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
  transform: translateY(20px);
  opacity: 0;
  animation: fadeInUp 1s forwards 0.7s;
}

.hero-buttons {
  display: flex;
  justify-content: center;
  gap: 1rem;
  transform: translateY(20px);
  opacity: 0;
  animation: fadeInUp 1s forwards 0.9s;
}

@keyframes fadeInUp {
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* Секции */
section {
  padding: var(--section-padding) 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
  position: relative;
}

.section-header h2 {
  position: relative;
  display: inline-block;
  z-index: 1;
}

.section-header h2::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background-color: var(--color-primary);
  border-radius: var(--radius-full);
}

.section-header p {
  font-size: 1.2rem;
  color: var(--color-secondary-light);
  max-width: 700px;
  margin: 0 auto;
}

/* Сетки и контейнеры */
.grid-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--grid-gap);
  margin-bottom: 3rem;
}

.flex-container {
  display: flex;
  flex-wrap: wrap;
  gap: var(--grid-gap);
  margin-bottom: 3rem;
  align-items: center;
}

.flex-container.reverse {
  flex-direction: row-reverse;
}

.content-column {
  flex: 1;
  min-width: 300px;
}

.content-column.is-two-thirds {
  flex: 2;
}

.image-column {
  flex: 1;
  min-width: 300px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.image-column img {
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  max-width: 100%;
  height: auto;
  transition: transform var(--transition-medium);
}

.image-column img:hover {
  transform: scale(1.02);
}

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

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

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

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

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

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

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

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

.link-arrow {
  display: inline-flex;
  align-items: center;
  color: var(--color-primary);
  font-weight: 600;
  text-decoration: none;
  margin-top: auto;
  transition: color var(--transition-fast);
}

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

.link-arrow:hover {
  color: var(--color-primary-dark);
}

.link-arrow:hover::after {
  transform: translateX(5px);
}

/* Estaciones Section */
.estaciones {
  background-color: var(--color-white);
}

.parallax-container {
  height: 400px;
  width: 100%;
  background-attachment: fixed;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  position: relative;
  margin-top: 3rem;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.parallax-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-overlay);
}

.parallax-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: var(--color-white);
  padding: 2rem;
  width: 80%;
  max-width: 800px;
}

.parallax-content h3 {
  color: var(--color-white);
  margin-bottom: 1rem;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.parallax-content p {
  font-size: 1.1rem;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* Servicios Section */
.servicios {
  background-color: var(--color-light);
  position: relative;
  overflow: hidden;
}

.servicios::before {
  content: '';
  position: absolute;
  top: -100px;
  left: -100px;
  width: 300px;
  height: 300px;
  background-color: rgba(0, 102, 204, 0.05);
  border-radius: 50%;
  z-index: 0;
}

.servicios::after {
  content: '';
  position: absolute;
  bottom: -100px;
  right: -100px;
  width: 300px;
  height: 300px;
  background-color: rgba(0, 102, 204, 0.05);
  border-radius: 50%;
  z-index: 0;
}

/* Investigación Section */
.investigacion {
  background-color: var(--color-white);
  position: relative;
}

.investigacion .flex-container {
  margin-bottom: 4rem;
}

/* Recursos Externos Section */
.recursos-externos {
  background-color: var(--color-light);
  position: relative;
  overflow: hidden;
}

.recursos-externos::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at top right, rgba(0, 102, 204, 0.05) 0%, transparent 70%);
  z-index: 0;
}

/* Portafolio Section */
.portafolio {
  background-color: var(--color-white);
}

.gallery-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 25px;
}

.gallery-item {
  text-align: center;
  transition: transform var(--transition-medium);
  display: flex;
  flex-direction: column;
  align-items: center;
}

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

.image-container {
  width: 100%;
  height: 250px;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 1rem;
  box-shadow: var(--shadow-md);
  display: flex;
  justify-content: center;
  align-items: center;
}

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

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

.gallery-item h3 {
  margin-bottom: 0.5rem;
  color: var(--color-secondary-dark);
}

.gallery-item p {
  color: var(--color-secondary-light);
}

/* Estudios de Caso Section */
.estudios-caso {
  background-color: var(--color-light);
}

.tabs-container {
  width: 100%;
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 2rem;
  border-bottom: 2px solid var(--color-light-gray);
}

.tab-btn {
  background: none;
  border: none;
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--color-secondary);
  padding: 1rem 2rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}

.tab-btn::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 3px;
  background-color: var(--color-primary);
  transition: width var(--transition-medium);
}

.tab-btn:hover {
  color: var(--color-primary);
}

.tab-btn.active {
  color: var(--color-primary);
}

.tab-btn.active::after {
  width: 100%;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn var(--transition-medium);
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* Talleres Section */
.talleres {
  background-color: var(--color-white);
}

/* Premios Section */
.premios {
  background-color: var(--color-light);
  position: relative;
}

.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 0;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 100%;
  background-color: var(--color-light-gray);
  border-radius: var(--radius-full);
}

.timeline-item {
  position: relative;
  width: 50%;
  padding: 1.5rem;
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  margin: 2rem 0;
  transition: transform var(--transition-medium);
}

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

.timeline-item:nth-child(odd) {
  left: 0;
  margin-right: auto;
}

.timeline-item:nth-child(even) {
  left: 50%;
  margin-left: auto;
}

.timeline-item::before {
  content: '';
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  background-color: var(--color-primary);
  border-radius: 50%;
  z-index: 1;
}

.timeline-item:nth-child(odd)::before {
  right: -35px;
}

.timeline-item:nth-child(even)::before {
  left: -35px;
}

.timeline-content {
  position: relative;
}

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

.timeline-content h4 {
  color: var(--color-secondary-dark);
  margin-bottom: 0.5rem;
}

/* Socios Section */
.socios {
  background-color: var(--color-white);
}

.partners-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 30px;
  margin-top: 2rem;
}

.partner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 1.5rem;
  background-color: var(--color-light);
  border-radius: var(--radius-md);
  transition: transform var(--transition-medium), box-shadow var(--transition-medium);
}

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

.partner img {
  max-width: 150px;
  height: auto;
  margin-bottom: 1rem;
  filter: grayscale(100%);
  transition: filter var(--transition-medium);
}

.partner:hover img {
  filter: grayscale(0%);
}

.partner h4 {
  color: var(--color-secondary);
  margin-bottom: 0;
}

/* Entre Bastidores Section */
.entre-bastidores {
  background-color: var(--color-light);
}

/* Media Section */
.media {
  background-color: var(--color-white);
}

.video-container {
  text-align: center;
  margin-bottom: 3rem;
}

.video-wrapper {
  position: relative;
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  cursor: pointer;
}

.video-wrapper img {
  width: 100%;
  height: auto;
  transition: transform var(--transition-medium);
}

.video-wrapper:hover img {
  transform: scale(1.02);
}

.play-button {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80px;
  height: 80px;
  background-color: rgba(0, 0, 0, 0.7);
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: background-color var(--transition-fast);
}

.play-button::before {
  content: '';
  width: 0;
  height: 0;
  border-top: 15px solid transparent;
  border-bottom: 15px solid transparent;
  border-left: 25px solid var(--color-white);
  margin-left: 5px;
}

.video-wrapper:hover .play-button {
  background-color: var(--color-primary);
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 30px;
}

.news-item {
  background-color: var(--color-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-medium);
}

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

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

.news-content {
  padding: 1.5rem;
}

.news-content h4 {
  margin-bottom: 0.5rem;
  color: var(--color-secondary-dark);
}

.news-content p {
  margin-bottom: 1rem;
  color: var(--color-secondary-light);
}

.news-source {
  display: block;
  font-size: 0.9rem;
  color: var(--color-gray);
  font-style: italic;
}

/* Contact Section */
.contacto {
  background-color: var(--color-light);
  position: relative;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
}

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

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-group {
  position: relative;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--color-secondary);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 15px;
  border: 1px solid var(--color-light-gray);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-secondary);
  background-color: var(--color-light);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.checkbox-group input {
  width: auto;
  margin-top: 5px;
}

.checkbox-group label {
  margin-bottom: 0;
  font-weight: 400;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.info-group h3 {
  margin-bottom: 1rem;
  color: var(--color-secondary-dark);
}

.info-group p {
  margin-bottom: 0.5rem;
  color: var(--color-secondary-light);
}

.map-container {
  width: 100%;
  height: 300px;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.map-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Footer */
.footer {
  background-color: var(--color-secondary-dark);
  color: var(--color-white);
  padding: var(--footer-padding) 0 30px;
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 5px;
  background: var(--gradient-primary);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin-bottom: 3rem;
}

.footer-column h3 {
  color: var(--color-white);
  margin-bottom: 1.5rem;
  position: relative;
  display: inline-block;
}

.footer-column h3::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 0;
  width: 40px;
  height: 3px;
  background-color: var(--color-primary);
  border-radius: var(--radius-full);
}

.footer-column p {
  color: var(--color-light-gray);
  margin-bottom: 1rem;
}

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

.footer-column ul li {
  margin-bottom: 0.8rem;
}

.footer-column ul li a {
  color: var(--color-light-gray);
  transition: color var(--transition-fast);
}

.footer-column ul li a:hover {
  color: var(--color-primary-light);
}

.social-links {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
}

.social-links a {
  color: var(--color-light-gray);
  font-weight: 500;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
  color: var(--color-gray);
  margin-bottom: 0;
  font-size: 0.9rem;
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.8);
  z-index: 1100;
  align-items: center;
  justify-content: center;
}

.modal-content {
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  width: 90%;
  max-width: 900px;
  max-height: 90vh;
  overflow: auto;
  position: relative;
  animation: modalOpen 0.3s forwards;
}

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

.close-modal {
  position: absolute;
  top: 20px;
  right: 20px;
  font-size: 30px;
  color: var(--color-white);
  cursor: pointer;
  z-index: 1101;
  transition: color var(--transition-fast);
}

.close-modal:hover {
  color: var(--color-primary);
}

.modal-body {
  padding: 20px;
}

.video-frame {
  width: 100%;
  height: 0;
  padding-bottom: 56.25%; /* 16:9 aspect ratio */
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-sm);
}

.video-frame img,
.video-frame iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Success Page */
.success-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 30px;
  text-align: center;
  background-color: var(--color-light);
}

.success-container {
  max-width: 600px;
  padding: 40px;
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
}

.success-icon {
  color: var(--color-success);
  font-size: 80px;
  margin-bottom: 20px;
}

.success-container h1 {
  color: var(--color-secondary-dark);
  margin-bottom: 20px;
}

.success-container p {
  color: var(--color-secondary-light);
  margin-bottom: 30px;
}

/* Privacy and Terms Pages */
.page-content {
  padding-top: 150px;
  padding-bottom: 80px;
}

.page-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 20px;
}

.page-header {
  margin-bottom: 40px;
  text-align: center;
}

.page-header h1 {
  margin-bottom: 15px;
}

.page-section {
  margin-bottom: 40px;
}

.page-section h2 {
  margin-bottom: 20px;
  color: var(--color-secondary-dark);
}

.page-section p {
  margin-bottom: 15px;
  color: var(--color-secondary-light);
}

.page-section ul {
  margin-bottom: 15px;
  color: var(--color-secondary-light);
}

/* Адаптивный дизайн */
@media (max-width: 1200px) {
  :root {
    --section-padding: 70px;
  }
  
  h1 {
    font-size: 3rem;
  }
  
  h2 {
    font-size: 2.2rem;
  }
  
  .timeline-item {
    width: 80%;
    left: 0 !important;
    margin: 2rem auto !important;
  }
  
  .timeline::before {
    left: 40px;
  }
  
  .timeline-item::before {
    left: -35px !important;
  }
}

@media (max-width: 992px) {
  :root {
    --section-padding: 60px;
  }
  
  h1 {
    font-size: 2.5rem;
  }
  
  h2 {
    font-size: 2rem;
  }
  
  .nav-desktop {
    display: none;
  }
  
  .hamburger-menu {
    display: flex;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --section-padding: 50px;
    --grid-gap: 20px;
  }
  
  h1 {
    font-size: 2.2rem;
  }
  
  h2 {
    font-size: 1.8rem;
  }
  
  .hero {
    height: 70vh;
  }
  
  .hero-buttons {
    flex-direction: column;
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
  }
  
  .hero-buttons .btn {
    width: 100%;
    margin-bottom: 10px;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 576px) {
  :root {
    --section-padding: 40px;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.6rem;
  }
  
  .section-header {
    margin-bottom: 2rem;
  }
  
  .grid-container {
    grid-template-columns: 1fr;
  }
  
  .tab-btn {
    padding: 0.8rem 1rem;
    font-size: 0.9rem;
  }
}