* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* Skip Link for Accessibility */
.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
  z-index: 10000;
  background: var(--primary-color);
  color: white;
  padding: 1rem 2rem;
  text-decoration: none;
  font-weight: bold;
}

.skip-link:focus {
  left: 0;
  top: 0;
  width: auto;
  height: auto;
  clip: auto;
}

:root {
  --primary-color: #2563eb;
  --secondary-color: #1e40af;
  --text-dark: #1f2937;
  --text-light: #6b7280;
  --bg-light: #f9fafb;
  --white: #ffffff;
  --border-color: #e5e7eb;
  --success-color: #10b981;
  --danger-color: #ef4444;
}

body {
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  scroll-behavior: smooth;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Navigation */
.navbar {
  background: var(--white);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 20px;
}

.nav-brand .logo {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--primary-color);
  text-decoration: none;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 2rem;
  align-items: center;
}

.nav-menu a {
  text-decoration: none;
  color: var(--text-dark);
  transition: color 0.3s;
}

.nav-menu a:hover {
  color: var(--primary-color);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s;
  cursor: pointer;
  border: none;
  font-size: 1rem;
}

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

.btn-primary:hover {
  background: var(--secondary-color);
}

.btn-secondary {
  background: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
  background: var(--primary-color);
  color: var(--white);
}

.btn-outline {
  background: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.btn-outline:hover {
  background: var(--primary-color);
  color: var(--white);
}

.btn-large {
  padding: 1rem 2rem;
  font-size: 1.1rem;
}

.btn-block {
  width: 100%;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: var(--white);
  padding: 5rem 0;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.hero-content h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.hero-content h2 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
  font-weight: 500;
}

.hero-content p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
}

.hero-buttons .btn-secondary {
  border-color: var(--white);
  color: var(--white);
}

.hero-buttons .btn-secondary:hover {
  background: var(--white);
  color: var(--primary-color);
}

.vpn-devices {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.device-icon {
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  padding: 2rem;
  border-radius: 12px;
  text-align: center;
  font-weight: bold;
  font-size: 1.2rem;
}

/* Platforms Section */
.platforms {
  padding: 3rem 0;
  background: var(--bg-light);
}

.platform-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.platform-card {
  background: var(--white);
  padding: 2rem;
  border-radius: 12px;
  text-align: center;
  text-decoration: none;
  color: var(--text-dark);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  transition:
    transform 0.3s,
    box-shadow 0.3s;
}

.platform-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

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

/* Features Section */
.features {
  padding: 5rem 0;
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 3rem;
  color: var(--text-dark);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: var(--white);
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s;
}

.feature-card:hover {
  transform: translateY(-5px);
}

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

.feature-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-dark);
}

.feature-card p {
  color: var(--text-light);
  line-height: 1.8;
}

/* Pricing Section */
.pricing {
  padding: 5rem 0;
  background: var(--bg-light);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.pricing-card {
  background: var(--white);
  padding: 2.5rem;
  border-radius: 16px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  position: relative;
  text-align: center;
}

.pricing-card.featured {
  border: 3px solid var(--primary-color);
  transform: scale(1.05);
}

.badge {
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary-color);
  color: var(--white);
  padding: 0.5rem 1.5rem;
  border-radius: 20px;
  font-weight: bold;
}

.pricing-card h3 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

.price {
  font-size: 3rem;
  font-weight: bold;
  color: var(--primary-color);
  margin-bottom: 2rem;
}

.price span {
  font-size: 1rem;
  color: var(--text-light);
}

.features-list {
  list-style: none;
  margin-bottom: 2rem;
  text-align: left;
}

.features-list li {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-color);
}

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

/* CTA Section */
.cta {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: var(--white);
  padding: 5rem 0;
  text-align: center;
}

.cta h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.cta p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

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

.cta-buttons .btn-secondary {
  border-color: var(--white);
  color: var(--white);
}

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

/* Support Section */
.support {
  padding: 5rem 0;
}

.support-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.support-info h3 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.support-info p {
  font-size: 1.1rem;
  color: var(--text-light);
  margin-bottom: 0.5rem;
}

.support-info .email {
  font-size: 1.2rem;
  color: var(--primary-color);
  font-weight: 500;
  margin: 1.5rem 0;
}

.support-icon {
  font-size: 8rem;
  text-align: center;
}

/* Footer */
.footer {
  background: var(--text-dark);
  color: var(--white);
  padding: 3rem 0 1rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-column h4 {
  margin-bottom: 1rem;
  font-size: 1.2rem;
}

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

.footer-column ul li {
  margin-bottom: 0.5rem;
}

.footer-column ul li a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  transition: color 0.3s;
}

.footer-column ul li a:hover {
  color: var(--white);
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-links a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-links {
  display: flex;
  gap: 2rem;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  z-index: 2000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
}

.modal-content {
  background-color: var(--white);
  margin: 10% auto;
  padding: 2rem;
  border-radius: 12px;
  max-width: 400px;
  position: relative;
}

.close {
  position: absolute;
  right: 1.5rem;
  top: 1rem;
  font-size: 2rem;
  cursor: pointer;
  color: var(--text-light);
}

.close:hover {
  color: var(--text-dark);
}

.modal-content h2 {
  margin-bottom: 1.5rem;
  text-align: center;
}

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

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.form-group input {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 1rem;
}

.form-footer {
  text-align: center;
  margin-top: 1rem;
  color: var(--text-light);
}

.form-footer a {
  color: var(--primary-color);
  text-decoration: none;
}

/* Logo with icon */
.nav-brand .logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo-icon {
  font-size: 1.5rem;
}

/* Device icons in hero */
.device-icon {
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  padding: 1.5rem;
  border-radius: 12px;
  text-align: center;
  font-weight: bold;
  font-size: 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.device-icon svg {
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

/* Platform cards small text */
.platform-card small {
  display: block;
  color: var(--text-light);
  font-size: 0.85rem;
  margin-top: 0.25rem;
}

.platform-icon svg {
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

/* Section subtitle */
.section-subtitle {
  text-align: center;
  color: var(--text-light);
  font-size: 1.1rem;
  margin-top: -2rem;
  margin-bottom: 2rem;
}

/* FAQ Section */
.faq-section {
  padding: 5rem 0;
  background: var(--bg-light);
}

.faq-container {
  max-width: 900px;
  margin: 0 auto;
}

.faq-category {
  margin-bottom: 2rem;
}

.faq-category-title {
  font-size: 1.5rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--border-color);
}

.faq-item {
  background: var(--white);
  padding: 1.5rem;
  border-radius: 12px;
  margin-bottom: 1rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  cursor: pointer;
  transition: all 0.3s;
}

.faq-item:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
}

.faq-question {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--text-dark);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-question::after {
  content: "+";
  font-size: 1.5rem;
  color: var(--primary-color);
  transition: transform 0.3s;
}

.faq-item.active .faq-question::after {
  content: "-";
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
  color: var(--text-light);
  line-height: 1.8;
}

.faq-item.active .faq-answer {
  max-height: 500px;
  margin-top: 1rem;
}

.faq-loading {
  text-align: center;
  padding: 2rem;
  color: var(--text-light);
}

.faq-more {
  text-align: center;
  margin-top: 2rem;
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-menu {
    gap: 1rem;
    font-size: 0.9rem;
  }

  .hero .container {
    grid-template-columns: 1fr;
  }

  .hero-content h1 {
    font-size: 2rem;
  }

  .platform-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .pricing-card.featured {
    transform: scale(1);
  }

  .support-content {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  .device-icon {
    padding: 1rem;
    font-size: 0.85rem;
  }

  .device-icon svg {
    width: 32px;
    height: 32px;
  }
}