:root {
  --bg-color: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-glass: rgba(255, 255, 255, 0.85);
  --text-main: #0f172a;
  --text-muted: #64748b;
  --border-color: rgba(0, 0, 0, 0.08);
  --primary: #4F46E5;
  --primary-hover: #4338ca;
  --primary-glow: rgba(79, 70, 229, 0.3);
  --secondary: #8b5cf6;

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;

  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

html {
  scroll-behavior: smooth;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-main);
  overflow-x: hidden;
}

body {
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}

/* Typography elements */
h1,
h2,
h3,
h4,
h5 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.gradient-text {
  background: linear-gradient(135deg, var(--secondary), var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.mb-5 {
  margin-bottom: 3rem;
}

/* Buttons */
.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-full);
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary.small {
  padding: 10px 20px;
  font-size: 0.9rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  box-shadow: 0 4px 15px var(--primary-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--primary-glow);
  filter: brightness(1.1);
}

.btn-secondary {
  background: transparent;
  color: var(--text-main);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(0, 0, 0, 0.03);
  border-color: rgba(0, 0, 0, 0.15);
}

/* Nav */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 80px;
  z-index: 1000;
  background: transparent;
  transition: var(--transition);
}

.navbar.scrolled {
  background: var(--bg-surface-glass);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
}

.nav-content {
  max-width: 1200px;
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
}

.logo {
  display: flex;
  align-items: center;
  font-size: 1.5rem;
  font-weight: 800;
}

.logo-img {
  width: 50px;
  height: 50px;
  border-radius: 8px;
  margin-right: 12px;
}

.logo-text {
  color: var(--text-main);
  letter-spacing: -0.05em;
}

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

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

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

.mobile-menu-btn {
  display: none;
  font-size: 1.8rem;
  color: var(--text-main);
  cursor: pointer;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 24px 60px;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  gap: 40px;
}

.hero-content {
  flex: 1;
  max-width: 600px;
  z-index: 2;
}

.badge {
  display: inline-block;
  padding: 6px 14px;
  background: rgba(79, 70, 229, 0.1);
  border: 1px solid rgba(79, 70, 229, 0.2);
  border-radius: var(--radius-full);
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero-title {
  font-size: 4.5rem;
  font-weight: 800;
  margin-bottom: 24px;
  line-height: 1.1;
  color: var(--text-main);
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-muted);
  margin-bottom: 40px;
  max-width: 480px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-visual {
  flex: 1;
  position: relative;
  height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.device-mockup {
  position: relative;
  width: 280px;
  height: 580px;
  background: var(--bg-surface);
  border-radius: 40px;
  border: 8px solid #1e293b;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
  overflow: hidden;
  z-index: 10;
  display: flex;
  flex-direction: column;
}

/* App Screenshot */
.mockup-screen {
  flex: 1;
  width: 100%;
  height: 100%;
  display: flex;
}

.mockup-carousel {
  width: 100%;
  height: 100%;
  overflow: hidden;
  position: relative;
}

.carousel-track {
  display: flex;
  width: 100%;
  height: 100%;
  transition: transform 0.8s cubic-bezier(0.65, 0, 0.35, 1);
}

.mockup-image {
  min-width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}

.glow-blob {
  position: absolute;
  filter: blur(80px);
  z-index: -1;
  opacity: 0.15;
  border-radius: 50%;
}

.blob-1 {
  width: 300px;
  height: 300px;
  background: var(--primary);
  top: -50px;
  right: -50px;
  animation: float 8s ease-in-out infinite alternate;
}

.blob-2 {
  width: 250px;
  height: 250px;
  background: var(--secondary);
  bottom: -20px;
  left: 20px;
  animation: float 10s ease-in-out infinite alternate-reverse;
}

.blob-3 {
  width: 400px;
  height: 400px;
  background: var(--primary);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  opacity: 0.1;
}

@keyframes float {
  0% {
    transform: translateY(0) scale(1);
  }

  100% {
    transform: translateY(30px) scale(1.1);
  }
}

/* Sections */
.section-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 100px 24px;
}

.section-title {
  font-size: 3rem;
  margin-bottom: 24px;
  color: var(--text-main);
}

.section-desc {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.section-subtitle {
  font-size: 1.2rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
}

/* About Section */
.about {
  background: linear-gradient(to bottom, var(--bg-color), rgba(255, 255, 255, 0.5));
  border-top: 1px solid var(--border-color);
}

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

.about-visual {
  display: flex;
  gap: 20px;
}

.glass-card {
  background: var(--bg-surface-glass);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 30px;
  flex: 1;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.glass-card.offset {
  transform: translateY(40px);
}

.card-icon {
  font-size: 2.5rem;
  color: var(--primary);
  margin-bottom: 20px;
}

.glass-card h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
  color: var(--text-main);
}

.glass-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Features */
.features {
  background: var(--bg-color);
}

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

.feature-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px;
  transition: var(--transition);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.02);
}

.hover-lift:hover {
  transform: translateY(-8px);
  border-color: rgba(79, 70, 229, 0.2);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

.feature-icon-wrapper {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  background: rgba(79, 70, 229, 0.1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin-bottom: 24px;
}

.feature-title {
  font-size: 1.4rem;
  margin-bottom: 16px;
  color: var(--text-main);
}

.feature-desc {
  color: var(--text-muted);
}

/* Testimonials */
.testimonials {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-color);
}

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

.testimonial-card {
  background: var(--bg-surface-glass);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px;
  position: relative;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.quote-icon {
  font-size: 2.5rem;
  color: var(--primary);
  opacity: 0.2;
  margin-bottom: 20px;
}

.testimonial-text {
  font-size: 1.1rem;
  color: var(--text-main);
  font-style: italic;
  margin-bottom: 30px;
  flex-grow: 1;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 15px;
  border-top: 1px solid var(--border-color);
  padding-top: 20px;
}

.author-avatar img {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--primary);
}

.author-info h4 {
  font-size: 1rem;
  color: var(--text-main);
  margin-bottom: 2px;
}

.author-info span {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Download / CTA */
.cta-section {
  padding: 80px 24px;
}

.cta-container {
  max-width: 1000px;
  margin: 0 auto;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 40px;
  padding: 80px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.05);
}

.cta-container h2 {
  font-size: 3rem;
  margin-bottom: 20px;
  position: relative;
  z-index: 2;
  color: var(--text-main);
}

.cta-container p {
  font-size: 1.2rem;
  color: var(--text-muted);
  margin-bottom: 40px;
  position: relative;
  z-index: 2;
}

.store-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  position: relative;
  z-index: 2;
}

.store-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  background: #0f172a;
  border: 1px solid #1e293b;
  color: white;
  border-radius: 12px;
  padding: 10px 24px;
  text-decoration: none;
  transition: var(--transition);
}

.store-btn:hover {
  background: #1e293b;
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.store-btn ion-icon {
  font-size: 2.2rem;
}

.store-text {
  display: flex;
  flex-direction: column;
  text-align: left;
}

.store-text span {
  font-size: 0.7rem;
  color: #cbd5e1;
  text-transform: uppercase;
}

.store-text strong {
  font-size: 1.2rem;
  font-weight: 600;
  color: white;
}

/* Footer */
.footer {
  border-top: 1px solid var(--border-color);
  padding: 80px 24px 40px;
  background: #ffffff;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 60px;
}

.footer-brand p {
  margin-top: 20px;
  color: var(--text-muted);
  max-width: 300px;
}

.footer h4 {
  font-size: 1.2rem;
  margin-bottom: 24px;
  color: var(--text-main);
}

.footer-links p {
  color: var(--text-muted);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.social-icons {
  display: flex;
  gap: 16px;
}

.social-icons a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #f1f5f9;
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-size: 1.2rem;
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

.social-icons a:hover {
  color: var(--primary);
  border-color: var(--primary);
  transform: translateY(-3px);
  background: #fff;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
}

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
  padding-top: 40px;
  border-top: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Animations - Reveal on Scroll */
.fade-in {
  opacity: 0;
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

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

.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

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

.slide-in-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: all 0.8s ease-out;
}

.slide-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.slide-in-right {
  opacity: 0;
  transform: translateX(50px);
  transition: all 0.8s ease-out;
}

.slide-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.scroll-zoom {
  opacity: 0;
  transform: scale(0.9);
  transition: all 1s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.scroll-zoom.visible {
  opacity: 1;
  transform: scale(1);
}

.delay-1 {
  transition-delay: 0.1s;
}

.delay-2 {
  transition-delay: 0.2s;
}

.delay-3 {
  transition-delay: 0.3s;
}

/* Responsive */
@media (max-width: 900px) {
  .hero {
    flex-direction: column;
    text-align: center;
    padding-top: 140px;
  }

  .hero-content {
    align-items: center;
    display: flex;
    flex-direction: column;
  }

  .hero-title {
    font-size: 3.5rem;
  }

  .hero-actions {
    justify-content: center;
  }

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

  .about-visual {
    flex-direction: column;
    gap: 30px;
  }

  .glass-card.offset {
    transform: none;
  }

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

@media (max-width: 600px) {
  .logo-text {
    font-size: 1.2rem;
  }

  .nav-links {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 80px;
    left: 0;
    right: 0;
    background: var(--bg-surface-glass);
    backdrop-filter: blur(16px);
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
  }

  .nav-links.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .btn-primary.small {
    display: none;
  }

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

  .hero-title {
    font-size: 2.8rem;
  }

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

  .section-title {
    font-size: 2.2rem;
  }

  .cta-container h2 {
    font-size: 2.2rem;
  }

  .glass-card h3 {
    font-size: 1.1rem;
  }
}