@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600&display=swap');

body {
  font-family: 'Inter', Arial, Helvetica, sans-serif;
  background: #f1f5f9;
  color: #1a202c;
  margin: 0;
  padding: 0;
}

section {
  margin-bottom: 2.5rem;
}
.header {
  background: #fff;
  border-bottom: 1px solid #e5e7eb;
  box-shadow: 0 1px 8px 0 rgba(30, 64, 175, 0.04);
  padding: 1.2rem 0 1.2rem 0;
  position: sticky;
  top: 0;
  z-index: 10;
}
.nav {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 1.2rem;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.nav-link {
  color: #2563eb;
  font-weight: 600;
  font-size: 1.06rem;
  text-decoration: none;
  padding: 0.3rem 0.7rem;
  border-radius: 0.3rem;
  transition: background 0.15s, color 0.15s;
}

.nav-link:hover {
  background: #e0e7ef;
  color: #1e40af;
}

.nav-sep {
  color: #b6c1d6;
  font-size: 1.1rem;
  font-weight: 600;
}
.logo {
  font-weight: bold;
  font-size: 1.3rem;
  color: #2563eb;
  text-decoration: none;
}
.nav-links a {
  margin-left: 1.2rem;
  color: #374151;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-links a:hover {
  color: #2563eb;
}
.hero {
  text-align: center;
  padding: 3.2rem 1rem 2.5rem 1rem;
  background: linear-gradient(120deg, #e0e7ef 0%, #f1f5f9 100%);
  border-radius: 0 0 1.4rem 1.4rem;
  box-shadow: 0 6px 32px 0 rgba(30, 64, 175, 0.06);
}
.hero h1 {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
  color: #1e40af;
  letter-spacing: -1px;
}
.hero h2 {
  font-size: 1.25rem;
  color: #334155;
  font-weight: 500;
  margin-bottom: 1.7rem;
}
.subtitle {
  color: #374151;
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
}
.cta-btn {
  display: inline-block;
  background: linear-gradient(90deg, #2563eb 60%, #1e40af 100%);
  color: #fff;
  padding: 0.85rem 2.2rem;
  border-radius: 0.5rem;
  font-weight: 600;
  text-decoration: none;
  font-size: 1.09rem;
  transition: background 0.18s, box-shadow 0.18s;
  border: none;
  cursor: pointer;
  box-shadow: 0 2px 12px 0 rgba(37,99,235,0.09);
}
.cta-btn:hover {
  background: linear-gradient(90deg, #1e40af 60%, #2563eb 100%);
  box-shadow: 0 4px 20px 0 rgba(30,64,175,0.13);
}
.cta-btn.disabled {
  background: #cbd5e1;
  cursor: not-allowed;
}
.testimonials {
  max-width: 700px;
  margin: 2.7rem auto 2.2rem auto;
  padding: 0 1.2rem;
}
.testimonials h3 {
  text-align: center;
  margin-bottom: 1.2rem;
  color: #1e40af;
  font-size: 1.18rem;
  letter-spacing: -0.5px;
}
.testimonial-list {
  display: flex;
  flex-direction: column;
  gap: 1.3rem;
}
.testimonial {
  background: #f9f9fb;
  border-left: 4px solid #2563eb;
  padding: 1.1rem 1.3rem;
  border-radius: 0.6rem;
  font-style: italic;
  box-shadow: 0 2px 14px 0 rgba(30,64,175,0.06);
}
.testimonial blockquote {
  margin: 0;
  font-size: 1.05rem;
  color: #334155;
  font-style: italic;
}
.testimonial span {
  display: block;
  margin-top: 0.6rem;
  color: #64748b;
  font-style: normal;
  font-size: 0.99rem;
}
.info {
  max-width: 700px;
  margin: 2.1rem auto 1.2rem auto;
  background: #fff;
  border-radius: 0.7rem;
  padding: 1.6rem 1.3rem;
  box-shadow: 0 2px 12px 0 rgba(30,64,175,0.04);
}
.info h3 {
  color: #1e40af;
  margin-top: 0;
  margin-bottom: 0.7rem;
  font-size: 1.13rem;
  font-weight: 600;
}
.info ul {
  list-style: disc inside;
  margin: 1rem 0 0 0;
  padding-left: 1.2rem;
}
.info li {
  margin-bottom: 0.5rem;
  color: #334155;
  font-size: 1.01rem;
}
.info h2, .why-convert h2 {
  margin-top: 0;
}
.why-convert ul {
  list-style: disc inside;
  margin: 1rem 0 0 0;
  padding-left: 1.2rem;
}
.footer {
  background: #f1f5f9;
  border-top: 1px solid #e5e7eb;
  padding: 1.3rem 0 0.7rem 0;
  text-align: center;
  font-size: 1.01rem;
  color: #64748b;
  margin-top: 2.5rem;
  box-shadow: 0 -2px 12px 0 rgba(30,64,175,0.03);
}
.footer-links {
  margin-bottom: 0.7rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.1rem;
}
.footer-links a {
  color: #2563eb;
  text-decoration: none;
  font-weight: 600;
  padding: 0.2rem 0.7rem;
  border-radius: 0.3rem;
  transition: background 0.15s, color 0.15s;
}
.footer-links a:hover {
  background: #e0e7ef;
  color: #1e40af;
}
.converter-tool {
  max-width: 420px;
  margin: 3.2rem auto 2.2rem auto;
  background: #fff;
  border-radius: 0.9rem;
  padding: 2.2rem 1.4rem 2.2rem 1.4rem;
  box-shadow: 0 4px 24px 0 rgba(30,64,175,0.08);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.converter-tool h3 {
  color: #1e40af;
  font-size: 1.16rem;
  margin-bottom: 1.3rem;
}
.converter-form {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.1rem;
  margin: 1.2rem 0 0.6rem 0;
  width: 100%;
}
.converter-form input[type="file"] {
  border: 1.5px solid #cbd5e1;
  padding: 0.7rem 1rem;
  border-radius: 0.4rem;
  background: #f1f5f9;
  font-size: 1rem;
  width: 100%;
  max-width: 300px;
  margin-bottom: 0.5rem;
  transition: border 0.15s;
}
.converter-form input[type="file"]:focus {
  border: 1.5px solid #2563eb;
  outline: none;
}
.converter-form button[type="submit"] {
  background: linear-gradient(90deg, #2563eb 60%, #1e40af 100%);
  color: #fff;
  padding: 0.85rem 2.1rem;
  border-radius: 0.5rem;
  font-weight: 600;
  font-size: 1.08rem;
  border: none;
  cursor: pointer;
  transition: background 0.17s, box-shadow 0.17s;
  box-shadow: 0 2px 12px 0 rgba(37,99,235,0.08);
  margin-top: 0.2rem;
}
.converter-form button[type="submit"]:hover {
  background: linear-gradient(90deg, #1e40af 60%, #2563eb 100%);
  box-shadow: 0 4px 20px 0 rgba(30,64,175,0.11);
}
.download-placeholder {
  margin-top: 1.5rem;
  text-align: center;
}
.download-placeholder .note {
  margin-top: 0.5rem;
  font-size: 0.9rem;
  color: #666;
  font-style: italic;
}
.note {
  color: #64748b;
  font-size: 0.95rem;
  margin-top: 0.5rem;
}
.converter-message {
  margin: 1rem 0;
  padding: 0.75rem 1rem;
  border-radius: 4px;
  font-weight: 500;
  text-align: center;
}

.converter-message.success {
  background-color: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
}

.converter-message.error {
  background-color: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
}

input[type="file"] {
  margin-bottom: 1rem;
  padding: 0.5rem;
  border: 2px dashed #ddd;
  border-radius: 4px;
  background-color: #f9f9f9;
  width: 100%;
  font-size: 1rem;
}

input[type="file"]:hover {
  border-color: #2c5aa0;
  background-color: #f0f8ff;
}

label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: #333;
}

/* How It Works Section */
.steps-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}

.step {
  text-align: center;
  padding: 1.5rem;
  background: #f8fafc;
  border-radius: 8px;
  border: 1px solid #e2e8f0;
}

.step h4 {
  color: #2c5aa0;
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}

.step p {
  color: #64748b;
  line-height: 1.6;
}

.features-list {
  margin-top: 2rem;
  text-align: center;
}

.features-list h4 {
  color: #1e293b;
  margin-bottom: 1rem;
}

.features-list ul {
  display: inline-block;
  text-align: left;
  list-style: none;
  padding: 0;
}

.features-list li {
  margin: 0.5rem 0;
  color: #475569;
  font-weight: 500;
}

.features-list li:before {
  content: "";
  margin-right: 0.5rem;
}

/* FAQ Sections */
.faq-section {
  margin: 2rem 0;
}

.faq-item {
  margin: 1.5rem 0;
  padding: 1rem;
  background: #f8fafc;
  border-radius: 6px;
  border-left: 4px solid #2c5aa0;
}

.faq-item h4 {
  color: #1e293b;
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}

.faq-item p {
  color: #475569;
  line-height: 1.6;
  margin: 0;
}

/* CTA Section */
.cta-section {
  text-align: center;
  margin: 3rem 0 2rem 0;
  padding: 2rem;
  background: #f1f5f9;
  border-radius: 8px;
}

/* Contact Form Styling */
.contact-form {
  max-width: 600px;
  margin: 2rem auto;
  padding: 2rem;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: #374151;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem;
  border: 2px solid #e5e7eb;
  border-radius: 6px;
  font-size: 1rem;
  transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #2c5aa0;
  box-shadow: 0 0 0 3px rgba(44, 90, 160, 0.1);
}

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

.contact-info {
  margin-top: 3rem;
  padding: 2rem;
  background: #f8fafc;
  border-radius: 8px;
  text-align: center;
}

.contact-info h3 {
  color: #1e293b;
  margin-bottom: 1rem;
}

.contact-info p {
  margin: 0.5rem 0;
  color: #64748b;
}

.contact-info a {
  color: #2c5aa0;
  text-decoration: none;
  font-weight: 600;
}

.contact-info a:hover {
  text-decoration: underline;
}

/* Thank You Page Styling */
.thank-you-container {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}

.thank-you-container h1 {
  font-size: 2.5rem;
  color: #059669;
  margin-bottom: 1rem;
}

.thank-you-container .lead {
  font-size: 1.25rem;
  color: #374151;
  margin-bottom: 2rem;
}

.thank-you-details,
.next-actions {
  margin: 2rem 0;
  padding: 1.5rem;
  background: #f0f9ff;
  border-radius: 8px;
  text-align: left;
}

.thank-you-details h3,
.next-actions h3 {
  color: #1e293b;
  margin-bottom: 1rem;
}

.thank-you-details ul {
  list-style: none;
  padding: 0;
}

.thank-you-details li {
  margin: 0.75rem 0;
  color: #475569;
  font-weight: 500;
}

.action-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-top: 1.5rem;
}

.cta-btn.secondary {
  background: #6b7280;
  color: white;
}

.cta-btn.secondary:hover {
  background: #4b5563;
}

.contact-reminder {
  margin-top: 2rem;
  padding: 1rem;
  background: #fef3c7;
  border-radius: 6px;
  border-left: 4px solid #f59e0b;
}

.contact-reminder p {
  margin: 0;
  color: #92400e;
  font-weight: 500;
}

.contact-reminder a {
  color: #d97706;
  font-weight: 600;
  text-decoration: none;
}

.contact-reminder a:hover {
  text-decoration: underline;
}

/* Accessibility Improvements */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.file-input-group {
  margin-bottom: 1.5rem;
}

.file-label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: #374151;
  font-size: 1rem;
}

.file-help {
  margin-top: 0.5rem;
  font-size: 0.875rem;
  color: #6b7280;
  font-style: italic;
}

/* Enhanced Button Accessibility */
.cta-btn:focus,
button:focus {
  outline: 3px solid #2563eb;
  outline-offset: 2px;
}

/* Enhanced Link Accessibility */
a:focus {
  outline: 2px solid #2563eb;
  outline-offset: 2px;
  border-radius: 2px;
}

/* Improved Form Input Focus */
input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: #2563eb;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Large Tap Targets for Mobile */
.cta-btn,
.nav-link,
.footer-links a {
  min-height: 44px;
  min-width: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
}

.nav-link {
  padding: 0.5rem 1rem;
}

/* Hero Section Styles */
.hero {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  text-align: center;
  padding: 4rem 2rem;
  margin-bottom: 0;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.hero-title {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.hero-subtitle {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  line-height: 1.6;
  opacity: 0.9;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.cta-btn {
  background: #2563eb;
  color: white;
  padding: 0.875rem 2rem;
  border-radius: 0.5rem;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.1rem;
  transition: all 0.2s;
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.cta-btn:hover {
  background: #1d4ed8;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.3);
}

.cta-btn.primary {
  background: #ffffff;
  color: #2563eb;
}

.cta-btn.primary:hover {
  background: #f8fafc;
  color: #1d4ed8;
}

.cta-btn.secondary {
  background: rgba(255, 255, 255, 0.2);
  border: 2px solid rgba(255, 255, 255, 0.5);
}

.cta-btn.secondary:hover {
  background: rgba(255, 255, 255, 0.3);
  border-color: rgba(255, 255, 255, 0.8);
}

.cta-btn:disabled,
.cta-btn.disabled {
  background: #9ca3af;
  color: #6b7280;
  cursor: not-allowed;
  transform: none;
}

.cta-btn:disabled:hover,
.cta-btn.disabled:hover {
  background: #9ca3af;
  transform: none;
  box-shadow: none;
}

/* Features Section */
.features {
  padding: 4rem 2rem;
  background: white;
}

.features-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.feature {
  text-align: center;
  padding: 2rem;
  border-radius: 0.75rem;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  transition: transform 0.2s, box-shadow 0.2s;
}

.feature:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.feature h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: #1f2937;
}

.feature p {
  color: #6b7280;
  line-height: 1.6;
}

/* Converter Preview Section */
.converter-preview {
  padding: 4rem 2rem;
  background: #f8fafc;
  text-align: center;
}

.converter-preview h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: #1f2937;
}

.converter-preview p {
  font-size: 1.125rem;
  color: #6b7280;
  margin-bottom: 2rem;
}

.converter-box {
  max-width: 600px;
  margin: 0 auto 2rem;
  background: white;
  border-radius: 0.75rem;
  padding: 2rem;
  border: 2px dashed #cbd5e1;
  transition: border-color 0.2s;
}

.converter-box:hover {
  border-color: #2563eb;
}

.file-drop-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.drop-icon {
  font-size: 3rem;
  opacity: 0.6;
}

.drop-text {
  font-size: 1.125rem;
  color: #6b7280;
  margin: 0;
}

.browse-btn {
  background: #2563eb;
  color: white;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 0.5rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

.browse-btn:hover {
  background: #1d4ed8;
}

.conversion-arrow {
  font-size: 2rem;
  color: #2563eb;
  margin: 1rem 0;
}

.download-placeholder {
  max-width: 600px;
  margin: 0 auto;
  padding: 1rem;
}

.note {
  font-size: 0.875rem;
  color: #6b7280;
  margin-top: 0.5rem;
  font-style: italic;
}

/* Steps and Features List */
.steps-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.step {
  background: white;
  padding: 2rem;
  border-radius: 0.75rem;
  border: 1px solid #e2e8f0;
  text-align: center;
}

.step h4 {
  font-size: 1.25rem;
  font-weight: 600;
  color: #2563eb;
  margin-bottom: 1rem;
}

.step p {
  color: #6b7280;
  line-height: 1.6;
}

.features-list {
  background: white;
  padding: 2rem;
  border-radius: 0.75rem;
  border: 1px solid #e2e8f0;
  max-width: 600px;
  margin: 0 auto;
}

.features-list h4 {
  font-size: 1.5rem;
  font-weight: 600;
  color: #1f2937;
  margin-bottom: 1.5rem;
  text-align: center;
}

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

.features-list li {
  padding: 0.5rem 0;
  font-size: 1.1rem;
  color: #374151;
  display: flex;
  align-items: center;
}

.features-list li::before {
  content: '✓';
  color: #10b981;
  font-weight: bold;
  margin-right: 0.75rem;
  font-size: 1.2rem;
}

/* Info Section (How It Works) */
.info {
  padding: 4rem 2rem;
  background: white;
  text-align: center;
}

.info h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: #1f2937;
}

.info p {
  font-size: 1.125rem;
  color: #6b7280;
  margin-bottom: 3rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Testimonial Styling */
.testimonial-section {
  margin: 2rem 0;
  padding: 2rem;
  background: #f8fafc;
  border-radius: 8px;
  border-left: 4px solid #2563eb;
}

.testimonial {
  margin: 1.5rem 0;
  padding: 1.5rem;
  background: white;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  font-style: italic;
}

.testimonial p {
  margin-bottom: 1rem;
  font-size: 1.1rem;
  line-height: 1.6;
  color: #374151;
}

.testimonial cite {
  display: block;
  font-style: normal;
  font-weight: 600;
  color: #2563eb;
  font-size: 0.9rem;
}

/* Internal Links */
.internal-link {
  color: #2563eb;
  text-decoration: none;
  font-weight: 600;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s ease;
}

.internal-link:hover {
  border-bottom-color: #2563eb;
}

/* FAQ Structure Improvements */
.faq-section {
  margin: 2rem 0;
}

.faq-section h2 {
  color: #1f2937;
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid #e5e7eb;
}

.faq-item {
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid #f3f4f6;
}

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

.faq-item h3 {
  color: #1f2937;
  margin-bottom: 0.75rem;
  font-size: 1.1rem;
  font-weight: 600;
}

.faq-answer {
  color: #4b5563;
  line-height: 1.6;
}

.faq-answer p {
  margin-bottom: 0.5rem;
}

/* Help CTA Section */
.help-cta-section {
  margin-top: 3rem;
  padding: 2rem;
  text-align: center;
  background: #f8fafc;
  border-radius: 8px;
}

.help-cta-section h2 {
  margin-bottom: 1rem;
  color: #1f2937;
}

.help-cta-section p {
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
}

/* Navigation Styles */
.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background: white;
  border-bottom: 1px solid #e5e7eb;
  position: relative;
}

.nav-brand {
  flex: 1;
}

.brand-link {
  font-size: 1.25rem;
  font-weight: 700;
  color: #2563eb;
  text-decoration: none;
  transition: color 0.2s ease;
}

.brand-link:hover {
  color: #1d4ed8;
}

/* Mobile Menu Button - Hidden by default, shown on mobile */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  background: none;
  border: 2px solid #e5e7eb;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  z-index: 1001;
  position: relative;
}

.mobile-menu-btn:hover {
  background: #f3f4f6;
  border-color: #d1d5db;
  transform: scale(1.05);
}

.mobile-menu-btn:focus {
  outline: 2px solid #2563eb;
  outline-offset: 2px;
}

.mobile-menu-btn:active {
  transform: scale(0.95);
}

/* Hamburger Lines */
.hamburger-line {
  width: 20px;
  height: 2px;
  background: #374151;
  margin: 2px 0;
  transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  transform-origin: center;
  border-radius: 1px;
}

/* Hamburger to X Animation */
.mobile-menu-btn.menu-open .hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
  background: #dc2626;
}

.mobile-menu-btn.menu-open .hamburger-line:nth-child(2) {
  opacity: 0;
  transform: scale(0);
}

.mobile-menu-btn.menu-open .hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
  background: #dc2626;
}

/* Navigation Links - Desktop Layout */
.nav-links {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.nav-link {
  color: #374151;
  text-decoration: none;
  font-weight: 500;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  transition: all 0.2s ease;
  min-height: 44px;
  display: flex;
  align-items: center;
  position: relative;
}

.nav-link:hover {
  background: #f3f4f6;
  color: #2563eb;
  transform: translateY(-1px);
}

.nav-link:focus {
  outline: 2px solid #2563eb;
  outline-offset: 2px;
}

/* Navigation Links - Desktop */
.nav-links {
  display: flex;
  gap: 1rem;
  align-items: center;
}

/* Hidden class for mobile menu */
.nav-links.hidden {
  display: none !important;
}

/* Mobile Responsive Styles */
@media (max-width: 768px) {
  .mobile-menu-btn {
    display: flex !important;
  }
  
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    border-top: 1px solid #e5e7eb;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    flex-direction: column;
    padding: 1rem;
    gap: 0.5rem;
    z-index: 1000;
  }
  
  .nav-links:not(.hidden) {
    display: flex !important;
  }
  
  .nav-link {
    width: 100%;
    text-align: center;
    padding: 1rem;
    border-bottom: 1px solid #f3f4f6;
  }
  
  .footer-links {
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
  }
  
  .footer-link {
    text-align: center;
    padding: 1rem;
    border-bottom: 1px solid #f3f4f6;
  }
  
  /* Mobile Hero Section */
  .hero {
    padding: 3rem 1rem;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-subtitle {
    font-size: 1.125rem;
  }
  
  .hero-actions {
    flex-direction: column;
    align-items: center;
  }
  
  .cta-btn {
    width: 100%;
    max-width: 300px;
  }
  
  /* Mobile Features Section */
  .features {
    padding: 3rem 1rem;
  }
  
  .features-container {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .feature {
    padding: 1.5rem;
  }
  
  /* Mobile Converter Preview */
  .converter-preview {
    padding: 3rem 1rem;
  }
  
  .converter-preview h2 {
    font-size: 2rem;
  }
  
  .converter-box {
    padding: 1.5rem;
    margin: 0 0 1.5rem;
  }
  
  /* Mobile Steps */
  .steps-container {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .step {
    padding: 1.5rem;
  }
}

/* Mobile Footer Styles */
.footer {
  background: #f8fafc;
  border-top: 1px solid #e5e7eb;
  margin-top: 3rem;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}

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

.footer-heading {
  color: #1f2937;
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 0;
}

.footer-link {
  color: #6b7280;
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  transition: all 0.2s ease;
  min-height: 44px;
  display: flex;
  align-items: center;
  font-size: 0.95rem;
}

.footer-link:hover {
  color: #2563eb;
  background: #eff6ff;
}

.footer-link:focus {
  outline: 2px solid #2563eb;
  outline-offset: 2px;
}

.footer-bottom {
  background: #e5e7eb;
  padding: 1rem 2rem;
  text-align: center;
}

.copyright {
  color: #6b7280;
  font-size: 0.9rem;
  margin: 0;
}

/* Blog/Insights Page Styles */
.blog-section {
  padding: 2rem 0;
  background: #f8f9fa;
}

.blog-intro {
  text-align: center;
  margin-bottom: 3rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.blog-intro h2 {
  color: #2c3e50;
  font-size: 2.2rem;
  margin-bottom: 1rem;
}

.blog-intro p {
  color: #666;
  font-size: 1.1rem;
  line-height: 1.6;
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.article-preview {
  background: white;
  border-radius: 12px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
  overflow: hidden;
  border: 1px solid #e9ecef;
}

.article-preview:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.article-content {
  padding: 1.5rem;
}

.article-title {
  color: #2c3e50;
  font-size: 1.4rem;
  margin-bottom: 1rem;
  font-weight: 600;
  line-height: 1.3;
}

.article-summary {
  color: #666;
  line-height: 1.6;
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

.article-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid #e9ecef;
}

.article-category {
  background: #e3f2fd;
  color: #1976d2;
  padding: 0.3rem 0.8rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
}

.article-date {
  color: #999;
  font-size: 0.85rem;
}

.read-more-btn {
  display: inline-flex;
  align-items: center;
  color: #3498db;
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: all 0.3s ease;
}

.read-more-btn:hover {
  color: #2980b9;
  transform: translateX(3px);
}

.insights-cta {
  text-align: center;
  padding: 3rem 2rem;
  background: white;
  border-radius: 12px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  margin-top: 2rem;
}

.insights-cta h3 {
  color: #2c3e50;
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

.insights-cta p {
  color: #666;
  font-size: 1.1rem;
  line-height: 1.6;
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Mobile Responsive Styles */
@media (max-width: 768px) {
  /* Mobile Navigation */
  .mobile-menu-btn {
    display: flex;
  }
  
  .nav {
    padding: 1rem;
  }
  
  /* Mobile Navigation Links - Hidden by default */
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 1rem 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    border-top: 1px solid #e5e7eb;
    z-index: 999;
    transform: translateY(-10px);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    max-height: 0;
    overflow: hidden;
  }
  
  /* Show mobile menu when not hidden */
  .nav-links:not(.hidden) {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    max-height: 500px;
  }
  
  /* Mobile Navigation Links Styling */
  .nav-link {
    font-size: 1.1rem;
    padding: 1rem 1.5rem;
    text-align: left;
    justify-content: flex-start;
    border-radius: 0;
    border-bottom: 1px solid #f3f4f6;
    min-height: 44px;
    transition: all 0.2s ease;
  }
  
  .nav-link:last-child {
    border-bottom: none;
  }
  
  .nav-link:hover,
  .nav-link:focus {
    background: #f8fafc;
    color: #2563eb;
    padding-left: 2rem;
    transform: none;
  }
  
  /* Mobile Footer */
  .footer-content {
    padding: 1.5rem 1rem;
  }
  
  .footer-links {
    flex-direction: column;
    gap: 0.5rem;
    align-items: center;
  }
  
  .footer-link {
    width: 100%;
    max-width: 280px;
    justify-content: center;
    text-align: center;
  }
  
  .footer-bottom {
    padding: 1rem;
  }
}

@media (max-width: 700px) {
  .nav {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.8rem;
    padding: 0 0.5rem;
  }
  .nav-links {
    gap: 0.7rem;
    flex-wrap: wrap;
  }
  .testimonials, .info, .converter-tool {
    padding: 1.2rem 0.7rem;
  }
  .converter-tool {
    margin: 2rem 0.5rem;
    padding: 1.2rem 0.7rem 1.5rem 0.7rem;
  }
  .footer-links {
    gap: 0.6rem;
  }
  .hero h1 {
    font-size: 1.35rem;
  }
  .hero h2 {
    font-size: 1.02rem;
  }
  .converter-form button[type="submit"] {
    width: 100%;
    font-size: 1rem;
  }
  .converter-form input[type="file"] {
    font-size: 0.97rem;
  }
  
  /* Blog Mobile Styles */
  .articles-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .blog-intro h2 {
    font-size: 1.8rem;
  }
  
  .article-title {
    font-size: 1.2rem;
  }
  
  .article-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
  
  .insights-cta {
    padding: 2rem 1rem;
  }
  
  .insights-cta h3 {
    font-size: 1.5rem;
  }
  
  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }
}

@media (max-width: 420px) {
  .hero {
    padding: 2.1rem 0.2rem 1.6rem 0.2rem;
  }
  .testimonials, .info, .converter-tool {
    padding: 0.8rem 0.2rem;
  }
}