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

:root {
  --primary-color: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #8b5cf6;
  --secondary-color: #10b981;
  --accent-color: #f59e0b;
  --text-dark: #111827;
  --text-medium: #374151;
  --text-light: #6b7280;
  --text-lighter: #9ca3af;
  --background: #fafafa;
  --background-light: #ffffff;
  --border-color: #e5e7eb;
  --border-light: #f3f4f6;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  --gradient-secondary: linear-gradient(135deg, #10b981 0%, #34d399 100%);
  --gradient-hero: linear-gradient(135deg, #fafafa 0%, #f3f4f6 100%);
  --border-radius: 0.75rem;
  --border-radius-lg: 1rem;
  --border-radius-xl: 1.5rem;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

/* CSS Custom Properties for Dark Mode Support */
@media (prefers-color-scheme: dark) {
  :root {
    --text-dark: #f9fafb;
    --text-medium: #d1d5db;
    --text-light: #9ca3af;
    --background: #111827;
    --background-light: #1f2937;
    --border-color: #374151;
    --border-light: #4b5563;
  }
}

html {
  scroll-behavior: smooth;
}

body {
  font-family:
    "Inter",
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Roboto,
    "Helvetica Neue",
    Arial,
    sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background: var(--background);
  font-feature-settings:
    "kern" 1,
    "liga" 1;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Accessibility */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Focus management */
*:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Container */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

@media (min-width: 640px) {
  .container {
    padding: 0 2rem;
  }
}

/* Header and Navigation */
.header {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  transition: var(--transition);
}

.nav {
  padding: 1rem 0;
}

.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo a {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--primary-color);
  text-decoration: none;
  letter-spacing: -0.025em;
  transition: var(--transition-fast);
}

.logo a:hover {
  color: var(--primary-dark);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 2.5rem;
  align-items: center;
}

.nav-menu a {
  text-decoration: none;
  color: var(--text-medium);
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition-fast);
  position: relative;
}

.nav-menu a::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: var(--transition-fast);
}

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

.nav-menu a:hover::after {
  width: 100%;
}

/* Mobile Menu */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  padding: 0.75rem;
  cursor: pointer;
  position: relative;
  width: 3rem;
  height: 3rem;
  border-radius: var(--border-radius);
  transition: var(--transition-fast);
  z-index: 1001;
}

.mobile-menu-toggle:hover {
  background: var(--border-light);
}

.hamburger {
  display: block;
  width: 1.5rem;
  height: 2px;
  background: var(--text-dark);
  transition: var(--transition);
  position: relative;
  margin: 0 auto;
}

.hamburger::before,
.hamburger::after {
  content: "";
  position: absolute;
  width: 100%;
  height: 2px;
  background: var(--text-dark);
  transition: var(--transition);
  left: 0;
}

.hamburger::before {
  top: -6px;
}

.hamburger::after {
  bottom: -6px;
}

/* Hamburger Animation */
.mobile-menu-toggle[aria-expanded="true"] .hamburger {
  background: transparent;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger::before {
  transform: rotate(45deg);
  top: 0;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger::after {
  transform: rotate(-45deg);
  bottom: 0;
}

/* Mobile menu overlay */
body.menu-open::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 999;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

/* Hero Section */
.hero {
  margin-top: 5rem;
  padding: 4rem 0 6rem;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(
    circle at 30% 20%,
    rgba(99, 102, 241, 0.1) 0%,
    transparent 50%
  );
  pointer-events: none;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-text {
  max-width: 600px;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  line-height: 1.1;
  margin-bottom: 1.5rem;
  color: var(--text-dark);
  font-weight: 800;
  letter-spacing: -0.05em;
  background: var(--gradient-primary);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.subtitle {
  font-size: 1.5rem;
  color: var(--text-medium);
  margin-bottom: 1rem;
  font-weight: 600;
}

.catchphrase {
  font-size: 1.125rem;
  color: var(--text-light);
  margin-bottom: 2.5rem;
  font-style: italic;
}

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

.hero-image img {
  max-width: 100%;
  height: auto;
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-xl);
  transform: perspective(1000px) rotateY(-5deg) rotateX(5deg);
  transition: var(--transition);
}

.hero-image:hover img {
  transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
}

/* Sections */
section {
  padding: 5rem 0;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  text-align: center;
  margin-bottom: 4rem;
  color: var(--text-dark);
  font-weight: 800;
  letter-spacing: -0.025em;
}

/* Intro Section */
.intro {
  padding: 4rem 0;
  background: var(--background-light);
  text-align: center;
}

.intro p {
  font-size: 1.125rem;
  color: var(--text-light);
  margin-bottom: 1.5rem;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}

/* Features Section */
.features {
  background: var(--background-light);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: var(--background-light);
  padding: 2rem;
  border-radius: var(--border-radius-lg);
  text-align: left;
  transition: var(--transition);
  border: 1px solid var(--border-color);
  position: relative;
  overflow: hidden;
  opacity: 0;
  transform: translateY(30px);
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: var(--transition);
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-color);
}

.feature-card.animate-in {
  opacity: 1;
  transform: translateY(0);
}

.feature-image {
  margin-bottom: 1.5rem;
  border-radius: var(--border-radius);
  overflow: hidden;
  position: relative;
}

.feature-image img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: var(--transition);
}

.feature-card:hover .feature-image img {
  transform: scale(1.05);
}

.feature-card h3 {
  font-size: 1.375rem;
  margin-bottom: 1rem;
  color: var(--text-dark);
  font-weight: 700;
}

.feature-card ul {
  list-style: none;
}

.feature-card li {
  padding: 0.5rem 0;
  color: var(--text-light);
  position: relative;
  padding-left: 1.5rem;
}

.feature-card li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--secondary-color);
  font-weight: 700;
}

/* Benefits Section */
.benefits {
  background: var(--background);
}

.benefit-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 3rem;
}

.benefit-item {
  text-align: center;
  padding: 2rem;
  opacity: 0;
  transform: translateY(30px);
  transition: var(--transition);
}

.benefit-item.animate-in {
  opacity: 1;
  transform: translateY(0);
}

.benefit-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 4rem;
  height: 4rem;
  background: var(--gradient-primary);
  color: white;
  border-radius: 50%;
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-lg);
}

.benefit-item h3 {
  font-size: 1.375rem;
  margin-bottom: 1rem;
  color: var(--text-dark);
  font-weight: 700;
}

.benefit-item p {
  color: var(--text-light);
  line-height: 1.7;
}

/* Commitment Section */
.commitment {
  background: var(--background-light);
}

.commitment-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.commitment-card {
  background: var(--background-light);
  padding: 2.5rem;
  border-radius: var(--border-radius-lg);
  text-align: left;
  transition: var(--transition);
  border: 1px solid var(--border-color);
  opacity: 0;
  transform: translateY(30px);
}

.commitment-card.animate-in {
  opacity: 1;
  transform: translateY(0);
}

.commitment-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.commitment-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  color: var(--text-dark);
  font-weight: 700;
}

.commitment-card ul {
  list-style: none;
}

.commitment-card li {
  padding: 0.75rem 0;
  color: var(--text-light);
  position: relative;
  padding-left: 1.5rem;
  line-height: 1.6;
}

.commitment-card li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--secondary-color);
  font-weight: 700;
}

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

.cta-title {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 1.5rem;
  font-weight: 800;
}

.cta-subtitle {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  opacity: 0.95;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0;
  border-radius: var(--border-radius);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  background: none;
}

.btn-primary {
  background: transparent;
  color: white;
  transition: var(--transition);
}

.btn-primary:hover {
  transform: scale(1.05);
}

.app-store-badge {
  height: 60px;
  width: auto;
  transition: var(--transition);
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.2));
}

.btn-primary:hover .app-store-badge {
  filter: drop-shadow(0 6px 12px rgba(0, 0, 0, 0.3));
}

/* Footer */
.footer {
  background: var(--text-dark);
  color: white;
  padding: 4rem 0 2rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.footer-info h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: white;
  font-weight: 700;
}

.footer-info p {
  color: var(--text-lighter);
  line-height: 1.6;
}

.footer-links h4,
.footer-contact h4 {
  font-size: 1.125rem;
  margin-bottom: 1rem;
  color: white;
  font-weight: 600;
}

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

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a,
.footer-contact a {
  color: var(--text-lighter);
  text-decoration: none;
  transition: var(--transition-fast);
}

.footer-links a:hover,
.footer-contact a:hover {
  color: white;
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid #374151;
  color: var(--text-lighter);
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Responsive Design */
@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: 3rem;
    text-align: center;
  }

  .hero-text {
    order: 1;
  }

  .hero-image {
    order: 2;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    padding: 1.5rem;
    box-shadow: var(--shadow-lg);
    gap: 1.5rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    border-radius: 0 0 var(--border-radius-lg) var(--border-radius-lg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 1000;
  }

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

  .nav-menu a {
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius);
    transition: var(--transition-fast);
    text-align: center;
    font-weight: 600;
  }

  .nav-menu a:hover {
    background: var(--primary-color);
    color: white;
    transform: translateX(4px);
  }

  .nav-menu a::after {
    display: none;
  }

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

  .hero {
    padding: 3rem 0 4rem;
    margin-top: 4rem;
  }

  section {
    padding: 3rem 0;
  }

  .feature-grid,
  .benefit-grid,
  .commitment-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 2rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }

  .nav-container {
    padding: 0 1rem;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .subtitle {
    font-size: 1.25rem;
  }

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

  .feature-card,
  .commitment-card {
    padding: 1.5rem;
  }

  .app-store-badge {
    height: 50px;
  }
}

/* Performance optimizations */
.feature-card,
.benefit-item,
.commitment-card {
  will-change: transform, opacity;
}

/* Print styles */
@media print {
  .header,
  .mobile-menu-toggle,
  .cta {
    display: none;
  }

  body {
    font-size: 12pt;
    line-height: 1.5;
  }

  .hero,
  .features,
  .benefits,
  .commitment {
    page-break-inside: avoid;
  }
}