/* CSS Variables for Theme */
:root {
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --text-primary: #1a1a1a;
  --text-secondary: #666666;
  --accent-color: #4A6CF7;
  --accent-hover: #3a5ce7;
  --accent-gradient: linear-gradient(135deg, #4A6CF7 0%, #6b8cff 100%);
  --card-bg: #ffffff;
  --border-color: #e5e7eb;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --header-height: 70px;
}

[data-theme="dark"] {
  --bg-primary: #0f1419;
  --bg-secondary: #1a1f2e;
  --text-primary: #ffffff;
  --text-secondary: #a0a0a0;
  --card-bg: #1e2430;
  --border-color: #2d3748;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
}

/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}

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

/* Decorative Background Shapes */
.decorative-shapes {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.shape {
  position: absolute;
  border-radius: 50%;
  background: var(--accent-gradient);
  opacity: 0.05;
  filter: blur(60px);
}

.shape-1 {
  width: 400px;
  height: 400px;
  top: -100px;
  right: -100px;
}

.shape-2 {
  width: 600px;
  height: 600px;
  bottom: -200px;
  left: -200px;
}

.shape-3 {
  width: 300px;
  height: 300px;
  top: 50%;
  right: 10%;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 15px 0;
  border-bottom: 1px solid var(--border-color);
  background-color: var(--bg-primary);
  backdrop-filter: blur(10px);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}

.logo {
  font-size: 1.5rem;
  font-weight: bold;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  gap: 30px;
  align-items: center;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.3s ease;
  font-weight: 500;
  font-size: 0.95rem;
}

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

.header-actions {
  display: flex;
  gap: 15px;
  align-items: center;
}

.theme-toggle {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 8px 12px;
  cursor: pointer;
  font-size: 1.2rem;
  transition: all 0.3s ease;
}

.theme-toggle:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow);
}

.install-btn {
  background: var(--accent-gradient);
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  white-space: nowrap;
}

.install-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.subscription-btn {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 10px 20px;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  white-space: nowrap;
}

.subscription-btn:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
  transform: translateY(-2px);
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 5px;
}

.mobile-menu-toggle span {
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  border-radius: 3px;
  transition: all 0.3s ease;
}

/* Buttons */
.btn-primary,
.btn-secondary {
  padding: 12px 30px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-block;
  border: none;
}

.btn-primary {
  background: var(--accent-gradient);
  color: white;
  box-shadow: var(--shadow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
}

/* Hero Section */
.hero {
  position: relative;
  z-index: 1;
  padding: 70px 0 100px 0;
  min-height: auto;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-text {
  max-width: 700px;
}

.hero-title {
  font-size: 4.5rem;
  font-weight: 800;
  margin-bottom: 25px;
  line-height: 1.2;
}

.hero-subtitle {
  font-size: 1.8rem;
  color: var(--text-secondary);
  margin-bottom: 35px;
  line-height: 1.6;
}

.hero-buttons {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
}

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

.image-placeholder {
  width: 100%;
  min-height: 500px;
  background: transparent;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.image-placeholder img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  display: none;
}

.image-placeholder img.loaded {
  display: block;
}

.image-placeholder::before {
  content: 'Hero Image\A(Add hero-image.png)';
  white-space: pre;
  text-align: center;
  color: var(--text-secondary);
  font-style: italic;
}

.image-placeholder:has(img.loaded)::before {
  display: none;
}

/* Section Styles */
section {
  position: relative;
  z-index: 1;
  padding: 60px 0;
}

.section-title {
  text-align: center;
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 15px;
}

.section-subtitle {
  text-align: center;
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 35px;
}

/* Features Section */
.features-section {
  background: var(--bg-secondary);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.feature-card {
  background: var(--card-bg);
  padding: 30px;
  border-radius: 12px;
  text-align: center;
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

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

.feature-icon {
  font-size: 3rem;
  margin-bottom: 15px;
}

.feature-card h3 {
  font-size: 1.3rem;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Get Started Section */
.get-started-section {
  background: var(--bg-primary);
  padding: 50px 0;
}

.install-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 30px;
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
}

.install-step {
  background: var(--card-bg);
  border-radius: 16px;
  padding: 20px;
  box-shadow: var(--shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.install-step img {
  width: 100%;
  height: auto;
  border-radius: 12px;
  display: block;
}

/* Pricing Section */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 50px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.pricing-card {
  background: var(--card-bg);
  border: 2px solid var(--border-color);
  border-radius: 16px;
  padding: 40px 30px;
  text-align: center;
  transition: all 0.3s ease;
  position: relative;
}

.pricing-card.highlighted {
  border-color: var(--accent-color);
  box-shadow: var(--shadow-lg);
  transform: scale(1.05);
}

.pricing-card.highlighted::before {
  content: 'Best Value';
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-gradient);
  color: white;
  padding: 5px 20px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
}

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

.pricing-card.highlighted:hover {
  transform: translateY(-5px) scale(1.05);
}

.pricing-name {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 15px;
}

.pricing-price {
  font-size: 3rem;
  font-weight: 800;
  color: var(--accent-color);
  margin-bottom: 5px;
}

.pricing-period {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 10px;
}

.pricing-note {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 20px;
  font-style: italic;
}

.pricing-features {
  list-style: none;
  padding: 0;
  margin: 30px 0;
  text-align: left;
}

.pricing-features li {
  padding: 10px 0;
  color: var(--text-primary);
  position: relative;
  padding-left: 30px;
}

.pricing-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--accent-color);
  font-weight: bold;
  font-size: 1.2rem;
}

.pricing-button {
  width: 100%;
  padding: 12px;
  background: var(--accent-gradient);
  color: white;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.pricing-button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* How It Works Section */
.how-it-works {
  background: var(--bg-secondary);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin-top: 50px;
}

.step-card {
  text-align: center;
}

.step-number {
  width: 60px;
  height: 60px;
  background: var(--accent-gradient);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: bold;
  margin: 0 auto 20px;
}

.step-card h3 {
  font-size: 1.3rem;
  margin-bottom: 10px;
}

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

/* Contact Section */
.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.contact-info h2 {
  font-size: 2rem;
  margin-bottom: 15px;
}

.contact-info p {
  color: var(--text-secondary);
  margin-bottom: 30px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 25px;
}

.contact-item {
  display: flex;
  gap: 15px;
  align-items: start;
}

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

.contact-item strong {
  display: block;
  margin-bottom: 5px;
}

.contact-item p,
.contact-item a {
  color: var(--text-secondary);
  text-decoration: none;
}

.contact-item a:hover {
  color: var(--accent-color);
}

/* Contact Form */
.contact-form {
  background: var(--card-bg);
  padding: 40px;
  border-radius: 16px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
}

.contact-form h3 {
  font-size: 1.5rem;
  margin-bottom: 25px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: var(--text-primary);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 1rem;
  transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(74, 108, 247, 0.1);
}

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

.form-status {
  margin-top: 15px;
  padding: 12px;
  border-radius: 8px;
  text-align: center;
  display: none;
}

.form-status.success {
  display: block;
  background: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
}

.form-status.error {
  display: block;
  background: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
}

/* About Section */
.about-section {
  background: var(--bg-secondary);
}

.about-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.about-content h2 {
  font-size: 2rem;
  margin-bottom: 20px;
}

.about-content p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  line-height: 1.8;
  margin-bottom: 15px;
}

/* Footer */
.footer {
  position: relative;
  z-index: 1;
  padding: 60px 0 30px;
  border-top: 1px solid var(--border-color);
  background: var(--bg-secondary);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-section h4 {
  margin-bottom: 15px;
  font-size: 1.1rem;
}

.footer-section p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

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

.footer-section ul li {
  margin-bottom: 10px;
}

.footer-section ul li a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Animations */
.fadeInUp {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.8s ease forwards;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }
.delay-5 { animation-delay: 0.5s; }
.delay-6 { animation-delay: 0.6s; }

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Responsive Design */
@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-image {
    order: -1;
  }

  .contact-wrapper {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    flex-direction: column;
    padding: 20px;
    gap: 15px;
  }

  .nav-links.active {
    display: flex;
  }

  .header-actions {
    display: none;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .hero-title {
    font-size: 3rem;
  }

  .hero-subtitle {
    font-size: 1.4rem;
  }

  .image-placeholder {
    min-height: 350px;
  }

  .section-title {
    font-size: 2rem;
  }

  .features-grid,
  .pricing-grid,
  .steps-grid {
    grid-template-columns: 1fr;
  }

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

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

  .contact-form {
    padding: 30px 20px;
  }

  .footer-content {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2.4rem;
  }

  .hero-subtitle {
    font-size: 1.2rem;
  }

  .image-placeholder {
    min-height: 280px;
  }

  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }

  .hero-buttons .btn-primary,
  .hero-buttons .btn-secondary {
    width: 100%;
    text-align: center;
  }

  .section-title {
    font-size: 1.8rem;
  }

  .pricing-price {
    font-size: 2.5rem;
  }

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