:root {
  /* Colors */
  --bg-primary: #0d0d12;
  --bg-secondary: #1a1d31;
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.7);
  --accent-color: #FD6B4C;
  --accent-hover: #E0563A;
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
  
  /* Typography */
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  
  /* Transitions */
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Background Glow Effects */
.bg-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(253,107,76,0.2) 0%, rgba(13,13,18,0) 70%);
  border-radius: 50%;
  top: -200px;
  left: -200px;
  z-index: -1;
  pointer-events: none;
}

.bg-glow-right {
  top: 40%;
  right: -300px;
  left: auto;
  background: radial-gradient(circle, rgba(253,107,76,0.15) 0%, rgba(13,13,18,0) 70%);
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 20px 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1000;
  transition: var(--transition-smooth);
}

.navbar.scrolled {
  background: rgba(13, 13, 18, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--glass-border);
  padding: 15px 5%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text-primary);
  text-decoration: none;
}

.logo img {
  height: 40px;
  width: 40px;
  border-radius: 10px;
}

.nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 15px;
  transition: var(--transition-smooth);
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: 30px;
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
  transition: var(--transition-smooth);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background-color: var(--accent-color);
  color: #fff;
  box-shadow: 0 4px 14px rgba(253, 107, 76, 0.4);
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(253, 107, 76, 0.6);
}

.btn-glass {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  backdrop-filter: blur(10px);
}

.btn-glass:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 120px 10% 60px;
  position: relative;
  gap: 60px;
  background-image: linear-gradient(rgba(13, 13, 18, 0.7), rgba(13, 13, 18, 0.95)), url('../assets/facebook-cover.png');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero-content {
  flex: 1;
  max-width: 600px;
  z-index: 1;
}

.hero-title {
  font-size: 64px;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -2px;
  margin-bottom: 24px;
  background: linear-gradient(135deg, #fff 0%, #a0a0a0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 20px;
  color: var(--text-secondary);
  margin-bottom: 40px;
  font-weight: 400;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 60px;
}

/* Mockup Container */
.mockup-container {
  flex: 1;
  position: relative;
  max-width: 320px;
  perspective: 1000px;
}

.mockup-container img {
  width: 100%;
  height: auto;
  border-radius: 40px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  transform: rotateX(5deg) rotateY(-15deg);
  transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  border: 8px solid #222;
}

.mockup-container:hover img {
  transform: rotateX(0) rotateY(0) scale(1.02);
}

/* Features Section (Rows) */
.features {
  padding: 120px 10%;
  position: relative;
}

.section-title {
  text-align: center;
  font-size: 40px;
  font-weight: 700;
  margin-bottom: 80px;
  letter-spacing: -1px;
}

.feature-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 120px;
  margin-bottom: 200px;
}

.feature-row:nth-child(even) {
  flex-direction: row-reverse;
}

.feature-text {
  flex: 1;
  max-width: 500px;
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: rgba(253, 107, 76, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  font-size: 24px;
  color: var(--accent-color);
}

.feature-title {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: -1px;
}

.feature-desc {
  color: var(--text-secondary);
  font-size: 18px;
  line-height: 1.6;
}

.feature-image {
  flex: 1;
  max-width: 300px;
  position: relative;
}

.feature-image img {
  width: 100%;
  border-radius: 32px;
  transition: transform 0.5s ease;
  filter: drop-shadow(0 25px 50px rgba(0,0,0,0.5));
}

.feature-image:hover img {
  transform: translateY(-10px);
}

/* Footer */
.footer {
  border-top: 1px solid var(--glass-border);
  padding: 60px 10% 40px;
  margin-top: 60px;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 32px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 16px;
}
.footer-brand img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.footer-brand h3 {
  font-size: 20px;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 14px;
  margin-top: 4px;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  transition: var(--transition-smooth);
}

.footer-links a:hover {
  color: var(--text-primary);
}

/* Animations */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: 1s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Language Switcher */
.lang-switcher {
  display: flex;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  overflow: hidden;
  margin-left: 16px;
}
.lang-switcher button {
  background: none;
  border: none;
  color: var(--text-secondary);
  padding: 6px 12px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-smooth);
}
.lang-switcher button.active {
  background: var(--accent-color);
  color: #fff;
}
.lang-switcher button:hover:not(.active) {
  color: var(--text-primary);
  background: rgba(255,255,255,0.1);
}

/* Pricing Section */
.pricing-section {
  padding: 120px 10%;
  position: relative;
}
.pricing-container {
  display: flex;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}
.pricing-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 32px;
  padding: 40px;
  width: 100%;
  max-width: 400px;
  position: relative;
  transition: transform 0.4s ease;
}
.pricing-card:hover {
  transform: translateY(-10px);
}
.pricing-card.premium {
  background: linear-gradient(145deg, rgba(255,255,255,0.08), rgba(255,255,255,0.02));
  border: 1px solid rgba(253, 107, 76, 0.3);
  box-shadow: 0 10px 40px rgba(253, 107, 76, 0.1);
}
.premium-badge {
  position: absolute;
  top: -15px;
  right: 30px;
  background: var(--accent-color);
  color: #fff;
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 700;
  box-shadow: 0 4px 15px rgba(253, 107, 76, 0.4);
}
.pricing-title {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 20px;
}
.pricing-price {
  margin-bottom: 20px;
}
.price-value {
  font-size: 48px;
  font-weight: 800;
}
.price-period {
  font-size: 16px;
  color: var(--text-secondary);
}
.pricing-desc {
  color: var(--text-secondary);
  margin-bottom: 30px;
  min-height: 48px;
}
.pricing-header {
  text-align: center;
  margin-bottom: 60px;
}
.pricing-subtitle {
  color: var(--text-secondary);
  font-size: 18px;
}
/* Billing Toggle */
.billing-toggle-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  margin-bottom: 40px;
}
.toggle-label {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-secondary);
  transition: color 0.3s;
}
.toggle-label.active {
  color: var(--text-primary);
}
.switch {
  position: relative;
  display: inline-block;
  width: 56px;
  height: 30px;
}
.switch input { 
  opacity: 0;
  width: 0;
  height: 0;
}
.slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--glass-border);
  transition: .4s;
}
.slider:before {
  position: absolute;
  content: "";
  height: 22px;
  width: 22px;
  left: 3px;
  bottom: 3px;
  background-color: var(--accent-color);
  transition: .4s;
}
.switch input:checked + .slider:before {
  transform: translateX(26px);
}
.slider.round {
  border-radius: 30px;
}
.slider.round:before {
  border-radius: 50%;
}
.save-badge {
  background: rgba(253, 107, 76, 0.15);
  color: var(--accent-color);
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 700;
}

/* Comparison Table */
.comparison-section {
  margin-top: 80px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}
.comparison-title {
  text-align: center;
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 40px;
}
.table-responsive {
  overflow-x: auto;
}
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  overflow: hidden;
  text-align: left;
}
.comparison-table th, .comparison-table td {
  padding: 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}
.comparison-table th {
  font-size: 18px;
  font-weight: 600;
  background: rgba(0, 0, 0, 0.2);
}
.comparison-table .pro-header {
  color: var(--accent-color);
}
.comparison-table td strong {
  font-size: 16px;
  color: var(--text-primary);
}
.comparison-table .pro-cell {
  background: linear-gradient(90deg, rgba(253, 107, 76, 0.03) 0%, rgba(253, 107, 76, 0.05) 100%);
}
.comparison-table .check {
  color: var(--accent-color);
  font-weight: 700;
  margin-right: 8px;
}
.comparison-table .cross {
  color: var(--text-secondary);
  font-weight: 700;
  margin-right: 8px;
}
.comparison-table tr:last-child td {
  border-bottom: none;
}
.pricing-btn {
  width: 100%;
  text-align: center;
}

/* Versions Section */
.versions-section {
  padding: 80px 10%;
  background: rgba(0,0,0,0.2);
}
.versions-container {
  max-width: 800px;
  margin: 0 auto;
}
.version-item {
  border-left: 2px solid var(--accent-color);
  padding-left: 30px;
  position: relative;
  margin-bottom: 40px;
}
.version-item::before {
  content: '';
  position: absolute;
  left: -9px;
  top: 0;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent-color);
  box-shadow: 0 0 10px var(--accent-color);
}
.version-header {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 12px;
}
.version-number {
  font-size: 24px;
  font-weight: 700;
}
.version-date {
  color: var(--text-secondary);
  font-size: 14px;
}
.version-desc {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Responsive */
@media (max-width: 992px) {
  .hero {
    flex-direction: column;
    text-align: center;
    padding-top: 150px;
  }
  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-actions {
    justify-content: center;
  }
  .feature-row, .feature-row:nth-child(even) {
    flex-direction: column;
    text-align: center;
    gap: 40px;
  }
  .feature-icon {
    margin: 0 auto 24px;
  }
}
/* Mobile Menu Button */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 48px;
  }
  .mobile-menu-btn {
    display: block;
  }
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 250px;
    height: 100vh;
    background: rgba(13, 13, 18, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    flex-direction: column;
    padding-top: 80px;
    transition: right 0.3s ease;
    border-left: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    gap: 24px;
  }
  .nav-links.active {
    right: 0;
  }
  .lang-switcher {
    margin-left: 0;
    margin-top: 16px;
  }
}