:root {
  --primary-blue: #2563eb;
  --secondary-blue: #1e40af;
  --accent-cyan: #0891b2;
  --dark-bg: #0f172a;
  --darker-bg: #020617;
  --card-bg: rgba(15, 23, 42, 0.8);
  --glass-bg: rgba(255, 255, 255, 0.05);
  --border-color: rgba(255, 255, 255, 0.1);
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.8);
  --text-muted: rgba(255, 255, 255, 0.6);
  --gradient-primary: linear-gradient(135deg, #2563eb, #1e40af);
  --gradient-accent: linear-gradient(135deg, #0891b2, #0e7490);
  --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.3);
  --shadow-medium: 0 20px 50px rgba(0, 0, 0, 0.4);
  --border-radius: 12px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--dark-bg);
  overflow-x: hidden;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 15px 0;
  z-index: 1000;
  transition: var(--transition);
  border-bottom: 1px solid var(--border-color);
}

.navbar.scrolled {
  background: rgba(15, 23, 42, 0.95);
  box-shadow: var(--shadow-soft);
  padding: 12px 0;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: "Poppins", sans-serif;
  font-size: 1.8rem;
  font-weight: 800;
  background: var(--gradient-primary);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-decoration: none;
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 35px;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition);
  padding: 8px 16px;
  border-radius: 8px;
  position: relative;
}

.nav-links a:hover {
  color: var(--text-primary);
  background: rgba(37, 99, 235, 0.1);
}

.nav-links a.active {
  color: #2563eb;
  background: rgba(37, 99, 235, 0.15);
}

/* Mobile Menu */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  cursor: pointer;
  padding: 8px;
  gap: 4px;
}

.mobile-menu-btn span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition);
  border-radius: 2px;
}

.mobile-menu-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  background: linear-gradient(135deg, var(--dark-bg) 0%, var(--darker-bg) 100%);
  padding: 100px 20px 80px;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 25% 25%, rgba(37, 99, 235, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 75% 75%, rgba(8, 145, 178, 0.1) 0%, transparent 50%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
}

.hero-badge {
  display: inline-block;
  background: rgba(37, 99, 235, 0.1);
  border: 1px solid rgba(37, 99, 235, 0.3);
  color: #60a5fa;
  padding: 10px 24px;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 30px;
  backdrop-filter: blur(10px);
}

.hero h1 {
  font-family: "Poppins", sans-serif;
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: 900;
  margin-bottom: 24px;
  letter-spacing: -2px;
  line-height: 1.1;
  background: linear-gradient(135deg, #ffffff 0%, #60a5fa 50%, #2563eb 100%);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero .tagline {
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  margin-bottom: 40px;
  color: var(--text-secondary);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.5;
}

.hero-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 60px;
}

.download-btn,
.demo-btn {
  padding: 16px 32px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 50px;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.download-btn {
  background: var(--gradient-primary);
  color: white;
  border: none;
  box-shadow: 0 8px 25px rgba(37, 99, 235, 0.3);
}

.download-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 35px rgba(37, 99, 235, 0.4);
}

.demo-btn {
  background: rgba(255, 255, 255, 0.1);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
}

.demo-btn:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.3);
}

/* Stats Section */
.stats {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 60px 40px;
  margin: -40px 20px 80px;
  position: relative;
  z-index: 10;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
  max-width: 800px;
  margin: 0 auto;
}

.stat-item {
  text-align: center;
  padding: 20px;
  border-radius: var(--border-radius);
  transition: var(--transition);
  cursor: pointer;
}

.stat-item:hover {
  background: rgba(37, 99, 235, 0.05);
  transform: translateY(-5px);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  background: var(--gradient-primary);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: block;
  margin-bottom: 8px;
}

.stat-label {
  color: var(--text-secondary);
  font-size: 1rem;
  font-weight: 500;
}

/* Section Styling */
.section {
  padding: 100px 0;
  position: relative;
}

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

.section-title {
  text-align: center;
  font-family: "Poppins", sans-serif;
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  font-weight: 800;
  margin-bottom: 60px;
  color: var(--text-primary);
  letter-spacing: -1px;
  position: relative;
}

.section-title::after {
  content: "";
  position: absolute;
  bottom: -15px;
  left: 50%;
  width: 60px;
  height: 4px;
  background: var(--gradient-primary);
  transform: translateX(-50%);
  border-radius: 2px;
}

/* About Section */
.about {
  background: linear-gradient(135deg, var(--darker-bg) 0%, var(--dark-bg) 100%);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-text h3 {
  font-family: "Poppins", sans-serif;
  color: var(--text-primary);
  font-size: 2.2rem;
  margin-bottom: 24px;
  font-weight: 700;
  line-height: 1.3;
}

.about-text p {
  font-size: 1.1rem;
  line-height: 1.7;
  margin-bottom: 20px;
  color: var(--text-secondary);
}

.feature-benefits {
  list-style: none;
  margin: 32px 0;
}

.feature-benefits li {
  padding: 12px 0;
  color: var(--text-secondary);
  position: relative;
  padding-left: 40px;
  font-size: 1rem;
}

.feature-benefits li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: #60a5fa;
  font-weight: bold;
  font-size: 1.2rem;
  width: 28px;
  height: 28px;
  background: rgba(37, 99, 235, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(37, 99, 235, 0.2);
}

.phone-mockup {
  position: relative;
  max-width: 400px;
  margin: 0 auto;
}

.feature-image {
  width: 100%;
  height: auto;
  border-radius: 20px;
  box-shadow: var(--shadow-medium);
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

.feature-image:hover {
  transform: scale(1.02) translateY(-8px);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.5);
}

/* Features Section */
.features,
.additional-features {
  background: var(--dark-bg);
}

.feature-showcase {
  display: grid;
  gap: 80px;
  margin-top: 60px;
}

.feature-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  padding: 50px;
  border-radius: 20px;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.feature-item:hover {
  background: rgba(37, 99, 235, 0.05);
  transform: translateY(-5px);
  border-color: rgba(37, 99, 235, 0.2);
}

.feature-item:nth-child(even) .feature-content {
  order: 2;
}

.feature-item:nth-child(even) .feature-screenshot {
  order: 1;
}

.feature-content h3 {
  font-family: "Poppins", sans-serif;
  font-size: 2rem;
  margin-bottom: 20px;
  color: var(--text-primary);
  font-weight: 700;
}

.feature-content p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 24px;
}

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

.screenshots-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 50px;
  margin-top: 60px;
}

.screenshot-card {
  text-align: center;
  transition: var(--transition);
  cursor: pointer;
}

.screenshot-card:hover {
  transform: translateY(-10px);
}

.phone-mockup-container {
  position: relative;
  width: 280px;
  height: 560px;
  margin: 0 auto 24px;
}

.phone-mockup-frame {
  width: 100%;
  height: 100%;
  background: linear-gradient(145deg, #1e293b, #334155);
  border-radius: 35px;
  padding: 20px;
  box-shadow: var(--shadow-medium);
  border: 2px solid var(--border-color);
}

.phone-screen-container {
  width: 100%;
  height: calc(100% - 40px);
  margin-top: 20px;
  background: #000;
  border-radius: 25px;
  overflow: hidden;
}

.screenshot-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.screenshot-info h4 {
  font-size: 1.3rem;
  margin-bottom: 12px;
  color: var(--text-primary);
  font-weight: 600;
}

.screenshot-info p {
  color: var(--text-secondary);
  line-height: 1.5;
  max-width: 280px;
  margin: 0 auto;
}

/* Footer */
.footer {
  background: var(--darker-bg);
  color: white;
  padding: 80px 0 40px;
  text-align: center;
  border-top: 1px solid var(--border-color);
}

.footer h3 {
  font-family: "Poppins", sans-serif;
  font-size: 2.8rem;
  margin-bottom: 24px;
  background: var(--gradient-primary);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 800;
}

.footer p {
  font-size: 1.1rem;
  margin-bottom: 32px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  color: var(--text-secondary);
  line-height: 1.6;
}

.social-icons {
  margin: 40px 0;
  display: flex;
  justify-content: center;
  gap: 20px;
}

.social-icon {
  display: inline-flex;
  width: 60px;
  height: 60px;
  background: var(--glass-bg);
  color: var(--text-primary);
  align-items: center;
  justify-content: center;
  border-radius: 15px;
  text-decoration: none;
  transition: var(--transition);
  font-size: 1.5rem;
  border: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
}

.social-icon:hover {
  background: var(--gradient-primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-soft);
}

/* Back to Top */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 60px;
  height: 60px;
  background: var(--gradient-primary);
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 1000;
  box-shadow: var(--shadow-soft);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-3px);
}

/* Animations */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.download-btn.loading {
  pointer-events: none;
  opacity: 0.8;
}

.download-btn.loading::after {
  content: "";
  width: 20px;
  height: 20px;
  border: 2px solid transparent;
  border-top: 2px solid white;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-left: 10px;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* Notification */
.notification {
  position: fixed;
  top: 100px;
  right: 20px;
  background: var(--gradient-primary);
  color: white;
  padding: 16px 24px;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-medium);
  z-index: 10000;
  transform: translateX(400px);
  transition: var(--transition);
}

.notification.show {
  transform: translateX(0);
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 20px 0;
    border-top: 1px solid var(--border-color);
  }

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

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

  .hero-buttons {
    flex-direction: column;
    align-items: center;
    gap: 16px;
  }

  .download-btn,
  .demo-btn {
    width: 100%;
    max-width: 280px;
    justify-content: center;
  }

  .stats {
    margin: -20px 10px 60px;
    padding: 40px 20px;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
  }

  .about-content {
    grid-template-columns: 1fr;
    gap: 50px;
  }

  .feature-item {
    grid-template-columns: 1fr;
    gap: 40px;
    padding: 30px;
  }

  .feature-item:nth-child(even) .feature-content {
    order: 1;
  }

  .feature-item:nth-child(even) .feature-screenshot {
    order: 2;
  }

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

  .phone-mockup-container {
    width: 260px;
    height: 520px;
  }

  .social-icons {
    gap: 15px;
  }

  .social-icon {
    width: 50px;
    height: 50px;
    font-size: 1.3rem;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
    gap: 25px;
  }

  .section {
    padding: 70px 0;
  }

  .hero {
    padding: 120px 15px 60px;
  }

  .container {
    padding: 0 15px;
  }

  .notification {
    left: 15px;
    right: 15px;
    transform: translateY(-100px);
  }

  .notification.show {
    transform: translateY(0);
  }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--dark-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--gradient-primary);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--secondary-blue);
}