/* Layout Styles */

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  width: 100%;
  box-sizing: border-box;
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-md);
  }
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-primary);
  backdrop-filter: blur(10px);
  z-index: var(--z-fixed);
  transition: var(--transition-normal);
  /* iPhone safe area support */
  padding-top: env(safe-area-inset-top);
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  width: 100%;
  box-sizing: border-box;
}

.nav-brand h2 {
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition-fast);
  position: relative;
  padding: var(--spacing-sm) 0;
}

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

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--primary-color);
  border-radius: var(--radius-full);
}

.nav-controls {
  display: flex !important;
  align-items: center !important;
  gap: var(--spacing-lg) !important;
  position: relative !important;
  z-index: 10 !important;
  margin: 0 !important;
  padding: 0 !important;
}

/* Mobile Navigation */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
}

.mobile-menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition-fast);
  border-radius: 1px;
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

.mobile-menu {
  position: fixed;
  top: 70px;
  left: 0;
  right: 0;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-primary);
  backdrop-filter: blur(20px);
  transform: translateY(-100%);
  transition: var(--transition-normal);
  z-index: var(--z-dropdown);
  padding: var(--spacing-lg);
}

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

.mobile-menu .nav-link {
  display: block;
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--border-primary);
  font-size: 1.125rem;
}

.mobile-menu .nav-link:last-child {
  border-bottom: none;
}

@media (max-width: 768px) {
  .nav-container {
    padding: 0 var(--spacing-md);
  }
  
  .nav-menu {
    display: none;
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .nav-brand h2 {
    font-size: 1.25rem;
  }
  
  .nav-controls {
    gap: var(--spacing-sm) !important;
  }
  
  .lang-btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.75rem;
  }
}

/* Hero Section */
.hero {
  padding: 120px 0 var(--spacing-3xl);
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 80%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
              radial-gradient(circle at 80% 20%, rgba(6, 182, 212, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
  position: relative;
  z-index: 1;
  width: 100%;
  box-sizing: border-box;
}

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

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: var(--spacing-lg);
}

.hero-description {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-2xl);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: var(--spacing-lg);
  align-items: center;
}

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

.conversion-preview {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  padding: var(--spacing-xl);
  background: var(--bg-card);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--border-primary);
}

.file-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-lg);
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-primary);
  min-width: 100px;
  transition: var(--transition-normal);
}

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

.file-icon {
  font-size: 2rem;
}

.conversion-arrow {
  color: var(--primary-color);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* Mobile Hero */
@media (max-width: 768px) {
  .hero {
    padding: 100px 0 var(--spacing-2xl);
  }
  
  .hero-container {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
    padding: 0 var(--spacing-md);
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-description {
    font-size: 1.125rem;
  }
  
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
    gap: var(--spacing-md);
  }
  
  .conversion-preview {
    flex-direction: column;
    gap: var(--spacing-md);
  }
  
  .conversion-arrow {
    transform: rotate(90deg);
  }
}

/* Section Styles */
.section-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.section-description {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* Features Section */
.features {
  padding: var(--spacing-3xl) 0;
  background: var(--bg-secondary);
}

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

.feature-card {
  background: var(--bg-card);
  padding: var(--spacing-2xl);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-primary);
  text-align: center;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: var(--transition-normal);
}

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

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-icon {
  width: 3rem;
  height: 3rem;
  margin-bottom: var(--spacing-lg);
  color: var(--text-secondary);
}

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

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.feature-card p {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Benefits Section */
.benefits {
  padding: var(--spacing-3xl) 0;
  background: var(--bg-primary);
}

.benefits-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.benefits-text h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-2xl);
  color: var(--text-primary);
}

.benefit-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

.benefit-item {
  display: flex;
  gap: var(--spacing-lg);
  align-items: flex-start;
}

.benefit-icon {
  width: 2rem;
  height: 2rem;
  flex-shrink: 0;
  color: var(--text-secondary);
}

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

.benefit-item h4 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.benefit-item p {
  color: var(--text-secondary);
  line-height: 1.6;
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
}

.stat-item {
  text-align: center;
  padding: var(--spacing-xl);
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-primary);
  transition: var(--transition-normal);
}

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

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-sm);
}

.stat-label {
  color: var(--text-secondary);
  font-weight: 500;
}

/* Mobile Benefits */
@media (max-width: 768px) {
  .benefits-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }
  
  .benefits-text h2 {
    font-size: 2rem;
  }
  
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
  }
  
  .stat-item {
    padding: var(--spacing-lg);
  }
  
  .stat-number {
    font-size: 2rem;
  }
}

/* CTA Section */
.cta {
  padding: var(--spacing-3xl) 0;
  background: var(--gradient-primary);
  color: var(--text-inverse);
  text-align: center;
}

.cta-content h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.cta-content p {
  font-size: 1.125rem;
  margin-bottom: var(--spacing-2xl);
  opacity: 0.9;
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-primary);
  padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-section h3,
.footer-section h4 {
  margin-bottom: var(--spacing-lg);
  color: var(--text-primary);
}

.footer-section h3 {
  font-size: 1.5rem;
  font-weight: 700;
}

.footer-section h4 {
  font-size: 1.125rem;
  font-weight: 600;
}

.footer-section p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
  line-height: 1.6;
  font-size: 0.95rem;
}

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

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

.footer-section ul li a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition-fast);
  font-size: 0.9rem;
  display: inline-block;
  padding: 2px 0;
}

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

.social-links {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: var(--transition-fast);
  color: var(--text-secondary);
}

.social-link svg {
  width: 20px;
  height: 20px;
}

.social-link:hover {
  background: var(--primary-color);
  border-color: var(--primary-color);
  color: var(--text-inverse);
  transform: translateY(-2px);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border-primary);
  color: var(--text-tertiary);
}

.footer-bottom p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.5;
}

/* Mobile Footer */
@media (max-width: 768px) {
  .footer {
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    padding: 0 var(--spacing-md);
  }
  
  .footer-section {
    text-align: center;
  }
  
  .social-links {
    justify-content: center;
  }
  
  .footer-bottom {
    padding-top: var(--spacing-lg);
    margin-top: var(--spacing-xl);
  }
}

/* Enhanced Mobile Responsive Design */
@media (max-width: 1024px) {
  .container {
    padding: 0 var(--spacing-lg);
  }
  
  .hero-title {
    font-size: 3rem;
  }
  
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .benefits-content {
    gap: var(--spacing-xl);
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .hero {
    padding: 80px 0 var(--spacing-xl);
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-subtitle {
    font-size: 1.125rem;
  }
  
  .hero-description {
    font-size: 0.875rem;
  }
  
  .feature-card {
    padding: var(--spacing-md);
  }
  
  .feature-card h3 {
    font-size: 1.125rem;
  }
  
  .feature-card p {
    font-size: 0.875rem;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .stat-item {
    padding: var(--spacing-md);
  }
  
  .stat-number {
    font-size: 1.75rem;
  }
  
  .stat-label {
    font-size: 0.875rem;
  }
  
  .cta h2 {
    font-size: 1.75rem;
  }
  
  .cta p {
    font-size: 0.875rem;
  }
  
  .btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 0.875rem;
  }
  
  .btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1rem;
  }
  
  .nav-brand h2 {
    font-size: 1.125rem;
  }
  
  .lang-btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.75rem;
  }
  
  .switch {
    width: 52px !important;
    height: 28px !important;
  }
  
  .slider::before {
    height: 20px !important;
    width: 20px !important;
    left: 4px !important;
    bottom: 4px !important;
  }
  
  input:checked + .slider::before {
    transform: translateX(24px) !important;
  }
}

/* iPhone 14 Pro Max specific adjustments */
@media (max-width: 430px) and (max-height: 932px) {
  .navbar {
    height: 60px;
  }
  
  .nav-container {
    height: 60px;
    padding: 0 var(--spacing-sm);
  }
  
  .nav-brand h2 {
    font-size: 1.125rem;
  }
  
  .nav-controls {
    gap: var(--spacing-xs) !important;
  }
  
  .switch {
    width: 48px !important;
    height: 26px !important;
  }
  
  .slider::before {
    height: 18px !important;
    width: 18px !important;
    left: 4px !important;
    bottom: 4px !important;
  }
  
  input:checked + .slider::before {
    transform: translateX(22px) !important;
  }
  
  .lang-btn {
    padding: var(--spacing-xs) !important;
    font-size: 0.7rem !important;
  }
  
  .globe-icon {
    width: 0.7rem !important;
    height: 0.7rem !important;
  }
  
  .current-lang {
    font-size: 0.65rem !important;
  }
  
  .hero {
    padding: 80px 0 var(--spacing-xl);
  }
  
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .footer {
    padding: var(--spacing-xl) 0 var(--spacing-sm);
  }
  
  .footer-content {
    padding: 0 var(--spacing-sm);
  }
}

/* Touch-friendly improvements */
@media (hover: none) and (pointer: coarse) {
  .btn {
    min-height: 44px;
    min-width: 44px;
  }
  
  .nav-link {
    padding: var(--spacing-md) var(--spacing-sm);
  }
  
  .lang-btn {
    min-height: 44px;
    padding: var(--spacing-sm) var(--spacing-md);
  }
  
  .switch {
    min-height: 44px !important;
    min-width: 44px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
  }
  
  .card:hover {
    transform: none;
  }
  
  .feature-card:hover {
    transform: none;
  }
}

/* Landscape mobile orientation */
@media (max-width: 768px) and (orientation: landscape) {
  .hero {
    padding: 80px 0 var(--spacing-xl);
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-container {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
  }
  
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}