:root {
  --bg-color: #000000;
  --bg-secondary: #0a0a0a;
  --text-color: #ffffff;
  --accent-color: #FF4081;
  --accent-hover: #C51162;
  --accent-secondary: #FF6B35;
  --accent-tertiary: #00D4AA;
  --text-dim: #888888;
  --text-muted: #666666;
  --card-bg: #111111;
  --border-color: #222222;
  --success-color: #34c759;
  --warning-color: #ff9500;
  --danger-color: #ff3b30;
  --transition: all 0.3s ease;
  --radius: 12px;
  --radius-lg: 20px;
  --gradient-brand: linear-gradient(135deg, #FF4081 0%, #FF6B35 50%, #00D4AA 100%);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Segoe UI',
    Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  text-decoration: none;
  color: var(--accent-color);
  transition: var(--transition);
}
a:hover {
  color: var(--accent-hover);
}

ul, ol {
  margin-left: 24px;
  margin-bottom: 16px;
}

li {
  margin-bottom: 8px;
}

/* Layout */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0;
  border-bottom: 1px solid var(--border-color);
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-color);
  display: flex;
  align-items: center;
  gap: 8px;
}
.logo-img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
}
.logo:hover {
  color: var(--text-color);
  opacity: 0.9;
}

nav {
  display: flex;
  gap: 32px;
}
nav a {
  font-size: 0.95rem;
  color: var(--text-dim);
  font-weight: 500;
}
nav a:hover {
  color: var(--text-color);
}

/* Hero */
.hero {
  text-align: center;
  padding: 100px 0 80px;
}
.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  margin-bottom: 24px;
  line-height: 1.1;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, #FF4081 0%, #FF6B35 50%, #00D4AA 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p {
  font-size: 1.25rem;
  color: var(--text-dim);
  max-width: 650px;
  margin: 0 auto 40px;
}

/* Buttons */
.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 30px;
  font-weight: 600;
  font-size: 1rem;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  color: var(--text-color);
  cursor: pointer;
  transition: var(--transition);
}
.btn:hover {
  background: var(--border-color);
  color: var(--text-color);
  transform: translateY(-2px);
}
.btn-primary {
  background: var(--accent-color);
  border-color: var(--accent-color);
  color: white;
}
.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: white;
}
.btn-danger {
  background: var(--danger-color);
  border-color: var(--danger-color);
  color: white;
}
.btn-icon {
  font-size: 1.1rem;
}

/* Brands */
.brands {
  text-align: center;
  padding: 60px 0;
  border-bottom: 1px solid var(--border-color);
}
.brands-title {
  color: var(--text-muted);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 24px;
}
.brands-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px 32px;
}
.brands-list span {
  color: var(--text-dim);
  font-weight: 500;
  font-size: 1.1rem;
}

/* Features */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  padding: 80px 0;
}
.feature-card {
  background: var(--card-bg);
  padding: 32px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  transition: var(--transition);
}
.feature-card:hover {
  border-color: var(--accent-color);
  transform: translateY(-4px);
}
.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}
.feature-card h3 {
  margin-bottom: 12px;
  font-size: 1.25rem;
  font-weight: 600;
}
.feature-card p {
  color: var(--text-dim);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* CTA Section */
.cta-section {
  text-align: center;
  padding: 80px 40px;
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  margin: 40px 0 80px;
  border: 1px solid var(--border-color);
}
.cta-section h2 {
  font-size: 2rem;
  margin-bottom: 16px;
}
.cta-section p {
  color: var(--text-dim);
  margin-bottom: 32px;
  font-size: 1.1rem;
}

/* Pricing */
.pricing-section {
  padding: 60px 0;
}
.pricing-header {
  text-align: center;
  margin-bottom: 60px;
}
.pricing-header h1 {
  font-size: 2.5rem;
  margin-bottom: 16px;
}
.pricing-header p {
  color: var(--text-dim);
  font-size: 1.1rem;
}
.pricing-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}
.pricing-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  text-align: center;
  position: relative;
}
.pricing-card.featured {
  border-color: var(--accent-color);
  transform: scale(1.02);
}
.pricing-card.featured::before {
  content: 'Most Popular';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-color);
  color: white;
  padding: 4px 16px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
}
.pricing-card h3 {
  font-size: 1.5rem;
  margin-bottom: 8px;
}
.pricing-card .price {
  font-size: 3rem;
  font-weight: 700;
  margin: 16px 0;
}
.pricing-card .price span {
  font-size: 1rem;
  color: var(--text-dim);
  font-weight: 400;
}
.pricing-card .price-note {
  color: var(--text-dim);
  font-size: 0.9rem;
  margin-bottom: 24px;
}
.pricing-card ul {
  list-style: none;
  margin: 0 0 32px 0;
  padding: 0;
  text-align: left;
}
.pricing-card li {
  padding: 8px 0;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 8px;
}
.pricing-card li:last-child {
  border-bottom: none;
}
.pricing-card .check {
  color: var(--success-color);
}

/* Content Pages */
.page-content {
  max-width: 800px;
  margin: 60px auto 80px;
}
.page-content h1 {
  margin-bottom: 16px;
  font-size: 2.5rem;
}
.page-content .subtitle {
  color: var(--text-dim);
  margin-bottom: 40px;
}
.page-content h2 {
  margin-top: 48px;
  margin-bottom: 16px;
  font-size: 1.5rem;
  color: var(--text-color);
}
.page-content h3 {
  margin-top: 32px;
  margin-bottom: 12px;
  font-size: 1.2rem;
}
.page-content p {
  margin-bottom: 16px;
  color: var(--text-dim);
}
.page-content strong {
  color: var(--text-color);
}

/* FAQ */
.faq-section {
  padding: 60px 0;
}
.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  margin-bottom: 16px;
  overflow: hidden;
}
.faq-question {
  padding: 20px 24px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq-question:hover {
  background: var(--border-color);
}
.faq-answer {
  padding: 0 24px 20px;
  color: var(--text-dim);
  line-height: 1.7;
}

/* Contact Form */
.contact-form {
  max-width: 500px;
  margin: 40px auto;
}
.form-group {
  margin-bottom: 24px;
}
.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 14px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  background: var(--card-bg);
  color: var(--text-color);
  font-size: 1rem;
  font-family: inherit;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent-color);
}
.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

/* Delete Account */
.delete-section {
  text-align: center;
  padding: 60px 0;
}
.delete-warning {
  background: rgba(255, 59, 48, 0.1);
  border: 1px solid var(--danger-color);
  border-radius: var(--radius);
  padding: 24px;
  margin: 32px 0;
}
.delete-warning h3 {
  color: var(--danger-color);
  margin-bottom: 12px;
}

/* Footer */
footer {
  border-top: 1px solid var(--border-color);
  margin-top: 40px;
  padding: 60px 0 40px;
}
.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}
.footer-section h4 {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
  color: var(--text-color);
}
.footer-section a {
  display: block;
  color: var(--text-dim);
  margin-bottom: 12px;
  font-size: 0.95rem;
}
.footer-section a:hover {
  color: var(--text-color);
}
.footer-bottom {
  text-align: center;
  padding-top: 40px;
  border-top: 1px solid var(--border-color);
}
.footer-bottom p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 8px;
}
.disclaimer {
  font-size: 0.8rem !important;
  color: var(--text-muted) !important;
}

/* Supported Devices Section */
.supported-devices {
  padding: 80px 0;
  border-top: 1px solid var(--border-color);
}

.supported-devices h2 {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 8px;
}

.section-subtitle {
  text-align: center;
  color: var(--text-dim);
  margin-bottom: 40px;
}

.device-categories {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 800px;
  margin: 0 auto;
}

.device-category {
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.device-category.coming-soon {
  opacity: 0.8;
}

.category-header {
  display: flex;
  align-items: center;
  padding: 20px 24px;
  cursor: pointer;
  transition: var(--transition);
  gap: 12px;
}

.category-header:hover {
  background: rgba(255, 255, 255, 0.05);
}

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

.category-header h3 {
  flex: 1;
  font-size: 1.1rem;
  font-weight: 600;
}

.category-status {
  font-size: 0.75rem;
  color: var(--success-color);
  padding: 4px 10px;
  background: rgba(52, 199, 89, 0.15);
  border-radius: 20px;
  font-weight: 500;
}

.category-status.badge-soon {
  color: var(--warning-color);
  background: rgba(255, 149, 0, 0.15);
}

.toggle-icon {
  color: var(--text-dim);
  transition: transform 0.3s ease;
  font-size: 0.8rem;
}

.category-header.collapsed .toggle-icon {
  transform: rotate(-90deg);
}

.category-content {
  max-height: 500px;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0 24px 24px;
}

.category-content.collapsed {
  max-height: 0;
  padding: 0 24px;
}

.device-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 12px;
}

.device-item {
  background: rgba(255, 255, 255, 0.05);
  padding: 14px 16px;
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.device-name {
  font-weight: 600;
  font-size: 0.95rem;
}

.device-tech {
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* Responsive */
@media (max-width: 768px) {
  header {
    flex-direction: column;
    gap: 16px;
  }
  nav {
    gap: 20px;
  }
  .hero {
    padding: 60px 0 40px;
  }
  .hero h1 {
    font-size: 2.2rem;
  }
  .hero p {
    font-size: 1.1rem;
  }
  .features {
    grid-template-columns: 1fr;
    padding: 40px 0;
  }
  .pricing-card.featured {
    transform: none;
  }
  .footer-content {
    grid-template-columns: repeat(2, 1fr);
  }
  .device-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}