/* CSS Custom Properties */
:root {
  /* Colors */
  --primary-blue: #2563eb;
  --primary-teal: #0891b2;
  --accent-blue: #3b82f6;
  --accent-teal: #06b6d4;
  --uzbek-blue: #0066cc;
  --uzbek-green: #1eb854;
  --uzbek-red: #ce1126;
  --white: #ffffff;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 3.75rem;
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  
  /* Borders */
  --border-radius-sm: 0.375rem;
  --border-radius: 0.5rem;
  --border-radius-lg: 0.75rem;
  --border-radius-xl: 1rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* Transitions */
  --transition-all: all 0.3s ease;
  --transition-colors: color 0.3s ease, background-color 0.3s ease, border-color 0.3s ease;
}

/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  line-height: 1.6;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--gray-800);
  background-color: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

/* Header */
.header {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-200);
  z-index: 1000;
  transition: var(--transition-all);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
}

.logo-img {
  height: 100px;
  width: auto;
  max-width: 200px;
}

.logo-text {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--primary-blue);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav-link {
  text-decoration: none;
  color: var(--gray-600);
  font-weight: 500;
  transition: var(--transition-colors);
}

.nav-link:hover {
  color: var(--primary-blue);
}

.language-toggle {
  display: flex;
  background: var(--gray-100);
  border-radius: var(--border-radius);
  padding: var(--space-1);
}

.lang-btn {
  padding: var(--space-2) var(--space-3);
  border: none;
  background: transparent;
  color: var(--gray-600);
  font-weight: 500;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: var(--transition-all);
}

.lang-btn.active,
.lang-btn:hover {
  background: var(--white);
  color: var(--primary-blue);
  box-shadow: var(--shadow-sm);
}

/* Hero Section */
.hero {
  padding: calc(4rem + var(--space-20)) 0 var(--space-24);
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.1) 0%, transparent 70%);
  animation: rotate 30s linear infinite;
}

@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-title {
  font-size: var(--font-size-5xl);
  font-weight: 700;
  line-height: 1.1;
  color: var(--gray-900);
  margin-bottom: var(--space-6);
}

.highlight {
  color: var(--primary-blue);
  position: relative;
}

.highlight::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-blue), var(--primary-teal));
  border-radius: 2px;
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  color: var(--gray-600);
  margin-bottom: var(--space-8);
  line-height: 1.6;
}

.launch-countdown {
  background: var(--white);
  padding: var(--space-6);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-lg);
  margin-bottom: var(--space-8);
}

.countdown-text {
  font-weight: 600;
  color: var(--primary-blue);
  margin-bottom: var(--space-4);
  text-align: center;
}

.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--gray-200);
  border-radius: var(--border-radius);
  overflow: hidden;
  margin-bottom: var(--space-3);
}

.progress-fill {
  width: 75%;
  height: 100%;
  background: linear-gradient(90deg, var(--primary-blue), var(--primary-teal));
  border-radius: var(--border-radius);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.8; }
}

.progress-text {
  font-size: var(--font-size-sm);
  color: var(--gray-600);
  text-align: center;
}

.signup-form {
  margin-bottom: var(--space-12);
}

.form-group {
  display: flex;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

#email {
  flex: 1;
  padding: var(--space-4);
  border: 2px solid var(--gray-300);
  border-radius: var(--border-radius-lg);
  font-size: var(--font-size-base);
  transition: var(--transition-all);
}

#email:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.btn-primary {
  padding: var(--space-4) var(--space-8);
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-teal));
  color: var(--white);
  border: none;
  border-radius: var(--border-radius-lg);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-all);
  white-space: nowrap;
}

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

.form-message {
  min-height: 1.5rem;
  font-size: var(--font-size-sm);
  padding: var(--space-2) 0;
}

.form-message.success {
  color: var(--uzbek-green);
}

.form-message.error {
  color: var(--uzbek-red);
}

.hero-stats {
  display: flex;
  gap: var(--space-8);
}

.stat {
  text-align: center;
}

.stat-number {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--primary-blue);
  display: block;
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--gray-600);
  font-weight: 500;
}

/* Hero Visual */
.hero-visual {
  position: relative;
  height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.tech-illustration {
  position: relative;
  width: 100%;
  height: 100%;
}

.floating-card {
  position: absolute;
  background: var(--white);
  padding: var(--space-4);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  animation: float 6s ease-in-out infinite;
}

.floating-card.card-1 {
  top: 10%;
  left: 10%;
  animation-delay: 0s;
}

.floating-card.card-2 {
  top: 20%;
  right: 5%;
  animation-delay: 1.5s;
}

.floating-card.card-3 {
  bottom: 30%;
  left: 5%;
  animation-delay: 3s;
}

.floating-card.card-4 {
  bottom: 10%;
  right: 15%;
  animation-delay: 4.5s;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-20px); }
}

.card-icon {
  font-size: var(--font-size-2xl);
}

.card-text {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--gray-700);
}

/* Features Section */
.features {
  padding: var(--space-24) 0;
  background: var(--white);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
}

.section-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--space-4);
}

.section-subtitle {
  font-size: var(--font-size-xl);
  color: var(--gray-600);
  max-width: 600px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-8);
}

.feature-card {
  background: var(--white);
  padding: var(--space-8);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow);
  border: 1px solid var(--gray-200);
  transition: var(--transition-all);
  text-align: center;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-blue);
}

.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-6);
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-teal));
  border-radius: var(--border-radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
}

.feature-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: var(--space-4);
}

.feature-description {
  color: var(--gray-600);
  line-height: 1.6;
}

/* Audience Section */
.audience {
  padding: var(--space-24) 0;
  background: var(--gray-50);
}

.audience-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
}

.audience-card {
  background: var(--white);
  padding: var(--space-10);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.audience-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
}

.audience-card.job-seekers::before {
  background: linear-gradient(90deg, var(--primary-blue), var(--primary-teal));
}

.audience-card.employers::before {
  background: linear-gradient(90deg, var(--uzbek-green), var(--primary-teal));
}

.audience-header {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.audience-icon {
  width: 64px;
  height: 64px;
  background: var(--gray-100);
  border-radius: var(--border-radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-blue);
}

.audience-title {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  color: var(--gray-900);
}

.audience-benefits {
  list-style: none;
}

.audience-benefits li {
  padding: var(--space-3) 0;
  color: var(--gray-700);
  position: relative;
  padding-left: var(--space-6);
}

.audience-benefits li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--uzbek-green);
  font-weight: bold;
}

/* About Section */
.about {
  padding: var(--space-24) 0;
  background: var(--white);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.about-description {
  font-size: var(--font-size-lg);
  color: var(--gray-600);
  margin-bottom: var(--space-6);
  line-height: 1.7;
}

.about-features {
  margin-top: var(--space-8);
}

.about-feature {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.feature-check {
  width: 24px;
  height: 24px;
  background: var(--uzbek-green);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-sm);
  font-weight: bold;
}

.about-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.uzbekistan-tech {
  position: relative;
  width: 300px;
  height: 300px;
}

.tech-node {
  position: absolute;
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-teal));
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

.tech-node.node-1 {
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  animation-delay: 0s;
}

.tech-node.node-2 {
  top: 50%;
  right: 0;
  transform: translateY(-50%);
  animation-delay: 0.5s;
}

.tech-node.node-3 {
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  animation-delay: 1s;
}

.tech-node.node-4 {
  top: 50%;
  left: 0;
  transform: translateY(-50%);
  animation-delay: 1.5s;
}

.tech-connection {
  position: absolute;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-blue), var(--primary-teal));
  opacity: 0.6;
}

.tech-connection.connection-1 {
  top: 30px;
  left: 30px;
  width: calc(100% - 60px);
  transform: rotate(45deg);
  transform-origin: left;
}

.tech-connection.connection-2 {
  top: 149px;
  left: 30px;
  width: calc(100% - 60px);
}

.tech-connection.connection-3 {
  bottom: 30px;
  left: 30px;
  width: calc(100% - 60px);
  transform: rotate(-45deg);
  transform-origin: left;
}

/* Contact Section */
.contact {
  padding: var(--space-24) 0;
  background: var(--gray-50);
}

.contact-content {
  display: flex;
  justify-content: center;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  align-items: center;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  background: var(--white);
  padding: var(--space-6);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow);
  min-width: 300px;
}

.contact-icon {
  width: 48px;
  height: 48px;
  background: var(--primary-blue);
  color: var(--white);
  border-radius: var(--border-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-details h4 {
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: var(--space-1);
}

.contact-details p {
  color: var(--gray-600);
}

.social-links {
  display: flex;
  gap: var(--space-4);
  margin-top: var(--space-4);
}

.social-link {
  width: 48px;
  height: 48px;
  background: var(--white);
  color: var(--gray-600);
  border-radius: var(--border-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  box-shadow: var(--shadow);
  transition: var(--transition-all);
}

.social-link:hover {
  color: var(--primary-blue);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* Footer */
.footer {
  background: var(--gray-900);
  color: var(--gray-300);
  padding: var(--space-16) 0 var(--space-8);
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-16);
  margin-bottom: var(--space-12);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.footer-logo-img {
  height: 90px;
  width: auto;
  max-width: 180px;
  filter: brightness(0) invert(1);
}

.footer-logo-text {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--white);
}

.footer-description {
  color: var(--gray-400);
  line-height: 1.6;
}

.footer-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
}

.footer-title {
  color: var(--white);
  font-weight: 600;
  margin-bottom: var(--space-4);
}

.footer-list {
  list-style: none;
}

.footer-list li {
  margin-bottom: var(--space-3);
}

.footer-link {
  color: var(--gray-400);
  text-decoration: none;
  transition: var(--transition-colors);
}

.footer-link:hover {
  color: var(--white);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-8);
  border-top: 1px solid var(--gray-800);
}

.footer-copyright {
  color: var(--gray-400);
}

.footer-badge {
  color: var(--gray-400);
  font-size: var(--font-size-sm);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .container {
    padding: 0 var(--space-6);
  }
  
  .hero-content,
  .about-content {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }
  
  .hero-visual {
    order: -1;
    height: 400px;
  }
  
  .audience-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
}

@media (max-width: 768px) {
  .logo-img {
    height: 80px;
    max-width: 160px;
  }
  
  .footer-logo-img {
    height: 72px;
    max-width: 140px;
  }
  
  .nav-links {
    gap: var(--space-4);
  }
  
  .nav-link {
    display: none;
  }
  
  .hero {
    padding: calc(4rem + var(--space-12)) 0 var(--space-16);
  }
  
  .hero-title {
    font-size: var(--font-size-4xl);
  }
  
  .hero-subtitle {
    font-size: var(--font-size-lg);
  }
  
  .form-group {
    flex-direction: column;
  }
  
  .hero-stats {
    justify-content: space-around;
    gap: var(--space-4);
  }
  
  .features-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
  
  .section-title {
    font-size: var(--font-size-3xl);
  }
  
  .section-subtitle {
    font-size: var(--font-size-lg);
  }
  
  .contact-item {
    min-width: auto;
    width: 100%;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: var(--space-4);
    text-align: center;
  }
  
  .floating-card {
    padding: var(--space-3);
    gap: var(--space-2);
  }
  
  .card-text {
    font-size: var(--font-size-xs);
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-4);
  }
  
  .hero-title {
    font-size: var(--font-size-3xl);
  }
  
  .hero-stats {
    flex-direction: column;
    gap: var(--space-6);
    text-align: center;
  }
  
  .audience-card,
  .feature-card {
    padding: var(--space-6);
  }
  
  .floating-card {
    position: relative;
    margin-bottom: var(--space-4);
  }
  
  .floating-card.card-1,
  .floating-card.card-2,
  .floating-card.card-3,
  .floating-card.card-4 {
    position: relative;
    top: auto;
    left: auto;
    right: auto;
    bottom: auto;
  }
  
  .tech-illustration {
    display: flex;
    flex-direction: column;
    align-items: center;
    height: auto;
  }
  
  .uzbekistan-tech {
    width: 200px;
    height: 200px;
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .hero::before {
    animation: none;
  }
}

/* Focus states for keyboard navigation */
.nav-link:focus,
.lang-btn:focus,
#email:focus,
.btn-primary:focus,
.social-link:focus,
.footer-link:focus {
  outline: 2px solid var(--primary-blue);
  outline-offset: 2px;
}

/* Loading states */
.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.btn-primary.loading::after {
  content: '';
  width: 16px;
  height: 16px;
  border: 2px solid var(--white);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-left: var(--space-2);
  display: inline-block;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}