/* CSS Variables - Нейтральная цветовая схема */
:root {
  /* Primary Colors */
  --primary-color: #2c3e50;
  --primary-dark: #1a252f;
  --primary-light: #34495e;
  
  /* Accent Colors */
  --accent-color: #3498db;
  --accent-dark: #2980b9;
  --accent-light: #5dade2;
  
  /* Neutral Colors */
  --neutral-100: #f8f9fa;
  --neutral-200: #e9ecef;
  --neutral-300: #dee2e6;
  --neutral-400: #ced4da;
  --neutral-500: #adb5bd;
  --neutral-600: #6c757d;
  --neutral-700: #495057;
  --neutral-800: #343a40;
  --neutral-900: #212529;
  
  /* Background Colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-dark: #2c3e50;
  --bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  
  /* Text Colors */
  --text-primary: #2c3e50;
  --text-secondary: #6c757d;
  --text-light: #ffffff;
  --text-muted: #adb5bd;
  
  /* Success/Error Colors */
  --success-color: #27ae60;
  --success-light: #2ecc71;
  --error-color: #e74c3c;
  --warning-color: #f39c12;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
  --shadow-xl: 0 20px 40px rgba(0,0,0,0.1);
  
  /* Borders */
  --border-radius: 8px;
  --border-radius-lg: 16px;
  --border-color: #dee2e6;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 3rem;
  --spacing-xl: 4rem;
  
  /* Typography */
  --font-primary: 'Roboto', sans-serif;
  --font-secondary: 'Lato', sans-serif;
}

/* Base Styles */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-secondary);
  color: var(--text-primary);
  line-height: 1.6;
  margin: 0;
  padding: 0;
  background-color: var(--bg-primary);
}

/* Typography */
h1, h2, h3, h4, h5, h6, .title {
  font-family: var(--font-primary);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

p, .content p {
  margin-bottom: var(--spacing-sm);
  color: var(--text-secondary);
}

.has-text-white, .has-text-white h1, .has-text-white h2, .has-text-white h3, .has-text-white p {
  color: var(--text-light) !important;
}

/* Global Button Styles */
.button, .btn, input[type='submit'], button {
  background: var(--accent-color);
  border: none;
  border-radius: var(--border-radius);
  color: var(--text-light);
  cursor: pointer;
  font-family: var(--font-primary);
  font-weight: 500;
  padding: 12px 24px;
  text-decoration: none;
  transition: all var(--transition-normal);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.button:hover, .btn:hover, input[type='submit']:hover, button:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: var(--text-light);
}

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

.button.is-primary:hover {
  background: var(--primary-dark);
}

.button.is-light {
  background: var(--neutral-100);
  color: var(--text-primary);
}

.button.is-light:hover {
  background: var(--neutral-200);
  color: var(--text-primary);
}

/* Links */
a {
  color: var(--accent-color);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.read-more-link {
  color: var(--accent-color);
  font-weight: 500;
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.read-more-link:hover {
  color: var(--accent-dark);
  border-bottom-color: var(--accent-dark);
}

.read-more-link::after {
  content: '→';
  transition: transform var(--transition-fast);
}

.read-more-link:hover::after {
  transform: translateX(4px);
}

/* Header & Navigation */
.header-main {
  position: relative;
  z-index: 1000;
}

.navbar {
  background: rgba(255, 255, 255, 0.95) !important;
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  border-bottom: 1px solid var(--border-color);
}

.navbar.is-scrolled {
  background: rgba(255, 255, 255, 0.98) !important;
  box-shadow: var(--shadow-md);
}

.navbar-item {
  color: var(--text-primary) !important;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.navbar-item:hover {
  color: var(--accent-color) !important;
  background: transparent !important;
}

.navbar-brand .title {
  color: var(--primary-color) !important;
  font-weight: 700;
}

/* Hero Section */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background-size: cover !important;
  background-repeat: no-repeat !important;
  background-position: center !important;
  background-attachment: fixed;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.5));
  z-index: 1;
}

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

.hero .title, .hero .subtitle, .hero p {
  color: var(--text-light) !important;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

/* Particle Animation */
.particle-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: 1;
}

.particle {
  position: absolute;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px) rotate(0deg);
    opacity: 1;
  }
  50% {
    transform: translateY(-20px) rotate(180deg);
    opacity: 0.7;
  }
}

.particle:nth-child(1) { width: 10px; height: 10px; left: 10%; animation-delay: 0s; }
.particle:nth-child(2) { width: 15px; height: 15px; left: 20%; animation-delay: 1s; }
.particle:nth-child(3) { width: 8px; height: 8px; left: 30%; animation-delay: 2s; }
.particle:nth-child(4) { width: 12px; height: 12px; left: 40%; animation-delay: 3s; }
.particle:nth-child(5) { width: 6px; height: 6px; left: 50%; animation-delay: 4s; }

/* Sections */
.section {
  padding: var(--spacing-xl) 0;
}

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

/* Cards */
.card {
  border: none;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  background: var(--bg-primary);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.card-image {
  position: relative;
  overflow: hidden;
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: 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: var(--spacing-md);
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  text-align: center;
}

/* Biomorphic Elements */
.bio-shape {
  border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
  position: relative;
  overflow: hidden;
}

.bio-shape::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: var(--bg-gradient);
  animation: bioRotate 20s linear infinite;
  opacity: 0.1;
}

@keyframes bioRotate {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Methodology Section */
#methodology .card {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
}

/* Awards Section */
#awards .card {
  text-align: center;
  transition: all var(--transition-normal);
}

#awards .card:hover {
  background: var(--accent-color);
  color: var(--text-light);
}

#awards .card:hover .title,
#awards .card:hover p {
  color: var(--text-light);
}

/* Accordion */
.accordion-container {
  background: var(--bg-primary);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.accordion-item {
  border-bottom: 1px solid var(--border-color);
}

.accordion-item:last-child {
  border-bottom: none;
}

.accordion-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md);
  cursor: pointer;
  background: var(--bg-primary);
  transition: background var(--transition-fast);
}

.accordion-header:hover {
  background: var(--bg-secondary);
}

.accordion-icon {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--accent-color);
  transition: transform var(--transition-fast);
}

.accordion-item.active .accordion-icon {
  transform: rotate(45deg);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  padding: 0 var(--spacing-md);
  background: var(--bg-secondary);
  transition: max-height var(--transition-normal), padding var(--transition-normal);
}

.accordion-item.active .accordion-content {
  max-height: 300px;
  padding: var(--spacing-md);
}

/* Contact Form */
.contact-form {
  background: rgba(255, 255, 255, 0.95);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
}

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

.label {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.input, .textarea, .select select {
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 12px 16px;
  font-family: var(--font-secondary);
  transition: all var(--transition-fast);
  background: var(--bg-primary);
}

.input:focus, .textarea:focus, .select select:focus {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
  outline: none;
}

/* Events Calendar */
#events .card {
  border-left: 4px solid var(--accent-color);
}

/* Media Section */
.media-list .media {
  padding: var(--spacing-sm);
  border-bottom: 1px solid var(--border-color);
}

.media-list .media:last-child {
  border-bottom: none;
}

/* Footer */
.footer {
  background: var(--bg-dark);
  color: var(--text-light);
  padding: var(--spacing-xl) 0 var(--spacing-md);
}

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

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

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

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

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

.social-links a {
  color: var(--text-muted) !important;
  text-decoration: none;
  font-weight: 500;
  padding: var(--spacing-xs);
  border-radius: var(--border-radius);
  transition: all var(--transition-fast);
  display: inline-block;
  margin-right: var(--spacing-xs);
}

.social-links a:hover {
  color: var(--text-light) !important;
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

.footer-divider {
  border-color: var(--neutral-600);
  margin: var(--spacing-lg) 0 var(--spacing-md);
}

/* Success Page */
.success-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-gradient);
  padding: var(--spacing-lg);
}

.success-content {
  background: rgba(255, 255, 255, 0.95);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  text-align: center;
  box-shadow: var(--shadow-xl);
  max-width: 500px;
}

/* Privacy & Terms Pages */
.content-page {
  padding-top: 100px;
  min-height: 100vh;
}

.content-page .section {
  padding: var(--spacing-lg) 0;
}

/* Animations */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: all var(--transition-slow);
}

.animate-on-scroll.animated {
  opacity: 1;
  transform: translateY(0);
}

/* Loading Animation */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.loading {
  animation: pulse 2s infinite;
}

/* Glassmorphism Effect */
.glass {
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--border-radius-lg);
}

/* Responsive Design */
@media (max-width: 768px) {
  .hero-section {
    background-attachment: scroll;
  }
  
  .card-image {
    height: 150px;
  }
  
  .section {
    padding: var(--spacing-lg) 0;
  }
  
  .contact-form {
    padding: var(--spacing-md);
  }
  
  .success-content {
    padding: var(--spacing-lg);
  }
}

@media (max-width: 480px) {
  .hero .title {
    font-size: 2rem !important;
  }
  
  .hero .subtitle {
    font-size: 1.2rem !important;
  }
  
  .card-image {
    height: 120px;
  }
  
  .contact-form {
    padding: var(--spacing-sm);
  }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }

.p-1 { padding: var(--spacing-xs); }
.p-2 { padding: var(--spacing-sm); }
.p-3 { padding: var(--spacing-md); }
.p-4 { padding: var(--spacing-lg); }

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--neutral-200);
}

::-webkit-scrollbar-thumb {
  background: var(--accent-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent-dark);
}

/* Focus States */
*:focus {
  outline: 2px solid var(--accent-color);
  outline-offset: 2px;
}

button:focus, .button:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.3);
}

/* Print Styles */
@media print {
  .navbar, .footer, .particle-container {
    display: none !important;
  }
  
  .section {
    padding: 1rem 0;
  }
  
  .card {
    box-shadow: none;
    border: 1px solid var(--border-color);
  }
}