/* 
 * Main Styles - LinguaPods
 * AI Translation Earbuds B2B Website
 */

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--bg-glass);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--border-light);
  transition: all var(--transition-normal);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 700;
  font-size: var(--text-xl);
}

.logo-icon {
  width: 40px;
  height: 40px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-2xl);
}

.nav-links a:not(.btn) {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: var(--text-sm);
  transition: color var(--transition-fast);
  position: relative;
}

.nav-links a:not(.btn):hover {
  color: var(--text-primary);
}

.nav-links a:not(.btn)::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width var(--transition-normal);
}

.nav-links a:not(.btn):hover::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: all var(--transition-fast);
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  padding-top: 72px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.hero-gradient {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 20%, rgba(0, 102, 255, 0.15) 0%, transparent 50%),
              radial-gradient(ellipse at 70% 80%, rgba(124, 58, 237, 0.1) 0%, transparent 50%);
}

.hero-mesh {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(0, 102, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 102, 255, 0.03) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black, transparent);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
  padding: var(--space-3xl) 0;
}

.hero-content {
  max-width: 600px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) var(--space-md);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--primary);
  margin-bottom: var(--space-lg);
  animation: fadeInUp 0.6s ease-out;
}

.badge-dot {
  width: 8px;
  height: 8px;
  background: var(--success);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.hero-title {
  font-size: var(--text-6xl);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: var(--tracking-tight);
  margin-bottom: var(--space-lg);
  animation: fadeInUp 0.6s ease-out 0.1s both;
}

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-xl);
  max-width: 520px;
  animation: fadeInUp 0.6s ease-out 0.2s both;
}

.hero-cta {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
  animation: fadeInUp 0.6s ease-out 0.3s both;
}

.btn-large {
  padding: var(--space-md) var(--space-2xl);
  font-size: var(--text-lg);
}

.hero-stats {
  display: flex;
  gap: var(--space-2xl);
  animation: fadeInUp 0.6s ease-out 0.4s both;
}

.stat {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: var(--text-3xl);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
}

.stat-label {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  margin-top: var(--space-xs);
}

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

.hero-product-container {
  position: relative;
  width: 100%;
  max-width: 500px;
}

.product-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, var(--primary-glow) 0%, transparent 70%);
  filter: blur(40px);
  animation: pulse 4s ease-in-out infinite;
}

.hero-product {
  width: 100%;
  height: auto;
  position: relative;
  z-index: 2;
  animation: float 6s ease-in-out infinite;
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.2));
}

.floating-elements {
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
}

.float-badge {
  position: absolute;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-glass);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-primary);
  box-shadow: var(--shadow-lg);
  animation: float 4s ease-in-out infinite;
}

.float-1 {
  top: 10%;
  right: 0;
  animation-delay: 0s;
}

.float-2 {
  bottom: 20%;
  left: 0;
  animation-delay: 1s;
}

.float-badge svg {
  color: var(--primary);
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: var(--space-2xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-tertiary);
  font-size: var(--text-sm);
  animation: fadeInUp 0.6s ease-out 0.8s both;
}

.scroll-arrow {
  width: 24px;
  height: 24px;
  border-right: 2px solid var(--text-tertiary);
  border-bottom: 2px solid var(--text-tertiary);
  transform: rotate(45deg);
  animation: scrollBounce 2s infinite;
}

@keyframes scrollBounce {
  0%, 100% { transform: rotate(45deg) translateY(0); opacity: 1; }
  50% { transform: rotate(45deg) translateY(8px); opacity: 0.5; }
}

/* Trust Section */
.trust-section {
  padding: var(--space-2xl) 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.trust-label {
  text-align: center;
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  margin-bottom: var(--space-lg);
}

.logo-wall {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-2xl);
  flex-wrap: wrap;
  opacity: 0.6;
}

.logo-item {
  height: 32px;
  filter: grayscale(100%);
  transition: filter var(--transition-normal);
}

.logo-item:hover {
  filter: none;
}

.logo-item img {
  height: 100%;
  width: auto;
}

/* Section Header */
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-3xl);
}

.section-header h2 {
  margin-bottom: var(--space-md);
}

.section-header p {
  margin: 0 auto;
  font-size: var(--text-lg);
}

/* Features Section */
.features {
  padding: var(--space-4xl) 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.feature-card {
  padding: var(--space-xl);
  text-align: center;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-lg);
}

.feature-icon svg {
  width: 100%;
  height: 100%;
}

.feature-card h3 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-sm);
}

.feature-card p {
  font-size: var(--text-sm);
  margin: 0 auto;
}

/* Technology Section */
.technology {
  padding: var(--space-4xl) 0;
  background: var(--bg-secondary);
}

.tech-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.section-label {
  display: inline-block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  margin-bottom: var(--space-md);
}

.tech-content h2 {
  margin-bottom: var(--space-lg);
}

.tech-content > p {
  margin-bottom: var(--space-xl);
}

.tech-features {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.tech-feature {
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
}

.tech-feature-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  color: white;
}

.tech-feature h4 {
  font-size: var(--text-base);
  margin-bottom: var(--space-xs);
}

.tech-feature p {
  font-size: var(--text-sm);
  margin: 0;
}

.tech-visual {
  position: relative;
}

.tech-visual-inner {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-2xl);
}

.tech-visual-inner img {
  width: 100%;
  height: auto;
  display: block;
}

.tech-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
  padding: var(--space-xl);
  display: flex;
  justify-content: space-around;
}

.tech-stat {
  text-align: center;
  color: white;
}

.tech-stat-number {
  display: block;
  font-size: var(--text-3xl);
  font-weight: 800;
}

.tech-stat-label {
  font-size: var(--text-sm);
  opacity: 0.8;
}

/* Use Cases Section */
.use-cases {
  padding: var(--space-4xl) 0;
}

.use-cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.use-case-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

.use-case-image {
  aspect-ratio: 16/9;
  overflow: hidden;
}

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

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

.use-case-content {
  padding: var(--space-lg);
}

.use-case-content h3 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-sm);
}

.use-case-content p {
  font-size: var(--text-sm);
  margin-bottom: var(--space-md);
}

.use-case-features {
  list-style: none;
  padding: 0;
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.use-case-features li {
  padding: var(--space-xs) 0;
  padding-left: var(--space-md);
  position: relative;
}

.use-case-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary);
}

/* App Section */
.app-section {
  padding: var(--space-4xl) 0;
  background: var(--bg-secondary);
}

.app-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.app-visual {
  display: flex;
  justify-content: center;
}

.phone-mockup {
  width: 300px;
  height: 600px;
  background: var(--gray-900);
  border-radius: 40px;
  padding: 12px;
  box-shadow: var(--shadow-2xl);
}

.phone-mockup img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 32px;
}

.app-content h2 {
  margin-bottom: var(--space-lg);
}

.app-content > p {
  margin-bottom: var(--space-xl);
}

.app-features-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.app-feature {
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
}

.app-feature-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  color: white;
  border-radius: 50%;
  font-size: var(--text-sm);
}

.app-feature h4 {
  font-size: var(--text-base);
  margin-bottom: var(--space-xs);
}

.app-feature p {
  font-size: var(--text-sm);
  margin: 0;
}

.app-badges {
  display: flex;
  gap: var(--space-md);
}

.app-badge {
  display: block;
  width: 135px;
  color: var(--text-primary);
  transition: opacity var(--transition-fast);
}

.app-badge:hover {
  opacity: 0.7;
}

/* Testimonials Section */
.testimonials {
  padding: var(--space-4xl) 0;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.testimonial-card {
  padding: var(--space-xl);
}

.testimonial-content {
  margin-bottom: var(--space-lg);
}

.testimonial-content p {
  font-style: italic;
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  margin: 0;
}

.testimonial-author {
  display: flex;
  gap: var(--space-md);
  align-items: center;
}

.author-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  overflow: hidden;
}

.author-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.author-info {
  display: flex;
  flex-direction: column;
}

.author-info strong {
  font-size: var(--text-sm);
  color: var(--text-primary);
}

.author-info span {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
}

/* CTA Section */
.cta-section {
  padding: var(--space-4xl) 0;
}

.cta-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  padding: var(--space-3xl);
  background: var(--gradient-primary);
  border: none;
  overflow: hidden;
  position: relative;
}

.cta-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.cta-content {
  position: relative;
  z-index: 1;
  color: white;
}

.cta-content h2 {
  color: white;
  margin-bottom: var(--space-md);
}

.cta-content p {
  color: rgba(255,255,255,0.9);
  margin-bottom: var(--space-xl);
  max-width: 400px;
}

.cta-buttons {
  display: flex;
  gap: var(--space-md);
}

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

.cta-buttons .btn-secondary {
  background: rgba(255,255,255,0.2);
  color: white;
  border-color: rgba(255,255,255,0.3);
}

.cta-buttons .btn-secondary:hover {
  background: rgba(255,255,255,0.3);
}

.cta-visual {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.cta-product-glow {
  position: absolute;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(255,255,255,0.3) 0%, transparent 70%);
  filter: blur(40px);
}

.cta-visual img {
  max-width: 300px;
  filter: drop-shadow(0 20px 40px rgba(0,0,0,0.3));
}

/* Contact Section */
.contact {
  padding: var(--space-4xl) 0;
  background: var(--bg-secondary);
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
}

.contact-info h2 {
  margin-bottom: var(--space-lg);
}

.contact-info > p {
  margin-bottom: var(--space-xl);
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  color: var(--text-secondary);
}

.contact-item svg {
  color: var(--primary);
}

.social-links {
  display: flex;
  gap: var(--space-md);
}

.social-links a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-primary);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.social-links a:hover {
  color: var(--primary);
  transform: translateY(-2px);
}

.contact-form-container {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-lg);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.form-group label {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-primary);
}

.form-group input,
.form-group textarea {
  padding: var(--space-md);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: var(--text-base);
  background: var(--bg-primary);
  color: var(--text-primary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

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

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.btn-full {
  width: 100%;
  justify-content: center;
}

/* Footer */
.footer {
  background: var(--gray-950);
  color: var(--gray-400);
  padding: var(--space-4xl) 0 var(--space-xl);
}

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

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: white;
  font-weight: 700;
  font-size: var(--text-xl);
  margin-bottom: var(--space-md);
  text-decoration: none;
}

.footer-brand p {
  color: var(--gray-400);
  font-size: var(--text-sm);
  max-width: 300px;
}

.footer-links h4 {
  color: white;
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-md);
}

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

.footer-links li {
  margin-bottom: var(--space-sm);
}

.footer-links a {
  color: var(--gray-400);
  font-size: var(--text-sm);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: white;
}

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

.footer-bottom p {
  font-size: var(--text-sm);
  margin: 0;
}

.footer-legal {
  display: flex;
  gap: var(--space-lg);
}

.footer-legal a {
  color: var(--gray-400);
  font-size: var(--text-sm);
  text-decoration: none;
}

.footer-legal a:hover {
  color: white;
}

/* Reveal Animation */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 1024px) {
  .hero-inner,
  .tech-layout,
  .app-layout,
  .contact-layout {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }
  
  .features-grid,
  .use-cases-grid,
  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .hero-visual {
    order: -1;
  }
  
  .tech-visual {
    order: -1;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    flex-direction: column;
    padding: var(--space-lg);
    gap: var(--space-md);
    border-bottom: 1px solid var(--border);
  }
  
  .nav-links.active {
    display: flex;
  }
  
  .nav-toggle {
    display: flex;
  }
  
  .features-grid,
  .use-cases-grid,
  .testimonials-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .hero-title {
    font-size: var(--text-4xl);
  }
  
  .hero-stats {
    flex-wrap: wrap;
    gap: var(--space-lg);
  }
  
  .hero-cta {
    flex-direction: column;
  }
  
  .cta-card {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .cta-content {
    order: 1;
  }
  
  .cta-content p {
    max-width: none;
    margin-left: auto;
    margin-right: auto;
  }
  
  .cta-buttons {
    flex-direction: column;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-md);
  }
  
  .hero-inner {
    padding: var(--space-2xl) 0;
  }
  
  .stat-number {
    font-size: var(--text-2xl);
  }
  
  .btn-large {
    padding: var(--space-md) var(--space-lg);
    font-size: var(--text-base);
  }
}