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

:root {
  /* Dark theme colors inspired by tonscan.org */
  --primary-color: #0088cc;
  --primary-hover: #1a9ddb;
  --secondary-color: #48a9f0;
  --text-primary: #ffffff;
  --text-secondary: #a0a0a0;
  --text-light: #707070;
  --bg-primary: #0f0f0f;
  --bg-secondary: #1a1a1a;
  --bg-card: #1f1f1f;
  --border-color: #2a2a2a;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-hover: 0 4px 16px rgba(0, 136, 204, 0.2);
  --gradient: linear-gradient(135deg, #0088cc 0%, #48a9f0 100%);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Navigation */
.navbar {
  position: sticky;
  top: 0;
  background-color: rgba(15, 15, 15, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  padding: 16px 0;
  z-index: 1000;
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
}

.logo-icon {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

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

.nav-links a {
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  transition: color 0.2s;
}

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

.nav-links .btn-download {
  background: var(--gradient);
  color: white;
  padding: 10px 20px;
  border-radius: 8px;
  font-weight: 600;
}

.nav-links .btn-download:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-hover);
}

/* Hero Section */
.hero {
  padding: 80px 0;
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-primary) 100%);
}

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

.hero-text h1 {
  font-size: 48px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.hero-text h1::first-line {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 20px;
  color: var(--text-secondary);
  margin-bottom: 32px;
  line-height: 1.6;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s;
  cursor: pointer;
  border: none;
}

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

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

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

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

.btn-large {
  padding: 18px 36px;
  font-size: 18px;
}

.app-info {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.badge {
  display: inline-block;
  padding: 6px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
}

.version {
  font-size: 14px;
  color: var(--text-light);
}

/* Phone Mockup */
.phone-mockup {
  position: relative;
  width: 100%;
  max-width: 300px;
  margin: 0 auto;
  border-radius: 40px;
  padding: 12px;
  background: linear-gradient(145deg, #2a2a2a, #1a1a1a);
  box-shadow: 0 20px 60px rgba(0, 136, 204, 0.15);
  overflow: hidden;
}

.hero-screenshot {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 32px;
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* Screenshots Section */
.screenshots {
  padding: 100px 0;
  background: var(--bg-primary);
}

.screenshots h2 {
  text-align: center;
  font-size: 42px;
  font-weight: 800;
  margin-bottom: 16px;
}

.section-subtitle {
  text-align: center;
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 60px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.screenshots-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 32px;
  max-width: 1100px;
  margin: 0 auto;
}

.screenshot-item {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
}

.screenshot-item:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-hover);
  border-color: rgba(0, 136, 204, 0.5);
}

.screenshot-item img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 24px;
}

/* Features Section */
.features {
  padding: 100px 0;
  background: var(--bg-secondary);
}

.features h2 {
  text-align: center;
  font-size: 42px;
  font-weight: 800;
  margin-bottom: 60px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 32px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 32px;
  transition: all 0.3s;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary-color);
  background: var(--bg-secondary);
}

.feature-icon {
  font-size: 48px;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.feature-card p {
  color: var(--text-secondary);
  line-height: 1.7;
}

/* About Section */
.about {
  padding: 100px 0;
  background: var(--bg-primary);
}

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

.about h2 {
  font-size: 38px;
  font-weight: 800;
  margin-bottom: 32px;
}

.benefits-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.benefits-list li {
  display: flex;
  gap: 16px;
  align-items: start;
}

.check-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--gradient);
  color: white;
  border-radius: 50%;
  font-weight: 700;
  flex-shrink: 0;
}

.benefits-list strong {
  color: var(--text-primary);
}

.about-description p {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 20px;
}

/* CTA Section */
.cta {
  padding: 100px 0;
  background: var(--gradient);
  color: white;
  text-align: center;
}

.cta-content h2 {
  font-size: 42px;
  font-weight: 800;
  margin-bottom: 20px;
}

.cta-content p {
  font-size: 20px;
  margin-bottom: 40px;
  opacity: 0.95;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

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

.cta .btn-primary:hover {
  background: var(--bg-card);
  transform: translateY(-2px) scale(1.02);
}

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

.footer-content {
  display: grid;
  grid-template-columns: 2fr 3fr;
  gap: 60px;
  margin-bottom: 40px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-brand .logo-icon {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.footer-brand .logo-text {
  font-size: 24px;
  font-weight: 700;
}

.footer-description {
  color: var(--text-secondary);
  margin-top: 8px;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.footer-column h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.footer-column a,
.footer-column p {
  display: block;
  color: var(--text-secondary);
  text-decoration: none;
  margin-bottom: 12px;
  transition: color 0.2s;
}

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

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid var(--border-color);
  color: var(--text-light);
  font-size: 14px;
}

/* Responsive Design */
@media (max-width: 768px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-text h1 {
    font-size: 36px;
  }

  .hero-subtitle {
    font-size: 18px;
  }

  .hero-buttons {
    flex-direction: column;
  }

  .phone-mockup {
    max-width: 260px;
  }

  .screenshots h2 {
    font-size: 32px;
  }

  .screenshots-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .features h2 {
    font-size: 32px;
  }

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

  .about-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

  .nav-links {
    gap: 16px;
    font-size: 14px;
  }

  .cta-content h2 {
    font-size: 32px;
  }

  .cta-content p {
    font-size: 16px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .hero {
    padding: 40px 0;
  }

  .hero-text h1 {
    font-size: 28px;
  }

  .screenshots,
  .features,
  .about,
  .cta {
    padding: 60px 0;
  }

  .screenshots-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .nav-brand {
    font-size: 18px;
  }

  .logo-icon {
    font-size: 24px;
  }

  .nav-links a:not(.btn-download) {
    display: none;
  }
}