/* Fonts */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 300 900;
  font-display: swap;
  src: url('../fonts/inter.woff2') format('woff2');
}

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

:root {
  /* Colors */
  --primary: #5B5FE9;
  --primary-dark: #4338CA;
  --secondary: #10B981;
  --accent: #F59E0B;
  --error: #EF4444;
  --warning: #F59E0B;
  --success: #10B981;
  
  /* Neutrals */
  --white: #FFFFFF;
  --gray-50: #F9FAFB;
  --gray-100: #F3F4F6;
  --gray-200: #E5E7EB;
  --gray-300: #D1D5DB;
  --gray-400: #9CA3AF;
  --gray-500: #6B7280;
  --gray-600: #4B5563;
  --gray-700: #374151;
  --gray-800: #1F2937;
  --gray-900: #111827;
  --black: #000000;
  
  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.6;
}

body {
  font-family: var(--font-family);
  line-height: var(--line-height-normal);
  color: var(--gray-900);
  background-color: var(--white);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-100);
  z-index: 100;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  text-decoration: none;
  color: var(--gray-900);
}

.logo-text {
  font-weight: 700;
  font-size: 1.25rem;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--space-xl);
}

.nav-menu a {
  text-decoration: none;
  color: var(--gray-700);
  font-weight: 500;
  transition: color 0.2s;
}

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

.nav-toggle {
  display: none;
  flex-direction: column;
  background: none;
  border: none;
  padding: var(--space-xs);
  cursor: pointer;
}

.nav-toggle-bar {
  width: 24px;
  height: 3px;
  background-color: var(--gray-700);
  margin: 2px 0;
  transition: 0.3s;
  border-radius: 2px;
}

/* Mobile Navigation */
@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 72px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 72px);
    background-color: var(--white);
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    padding-top: var(--space-2xl);
    gap: var(--space-lg);
    transition: left 0.3s;
    border-top: 1px solid var(--gray-100);
  }

  .nav-menu.active {
    left: 0;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-toggle.active .nav-toggle-bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .nav-toggle.active .nav-toggle-bar:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.active .nav-toggle-bar:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
  }
}

/* Main Content */
main {
  margin-top: 72px;
}

/* Hero Section */
.hero {
  padding: var(--space-2xl) 0;
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
}

.hero-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-sm);
}

.plus-icon {
  color: var(--primary);
}

.hero-subtitle {
  font-size: 1.5rem;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: var(--space-md);
}

.hero-description {
  font-size: 1.125rem;
  color: var(--gray-600);
  margin-bottom: var(--space-xl);
  line-height: var(--line-height-relaxed);
}

.hero-form {
  display: flex;
  gap: var(--space-sm);
  max-width: 400px;
}

.hero-form input[type="email"] {
  flex: 1;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--gray-300);
  border-radius: 8px;
  font-size: 1rem;
}

.hero-visual {
  display: flex;
  justify-content: center;
}

.phone-mockup {
  perspective: 1000px;
  transform: rotateY(-5deg) rotateX(5deg);
}

/* Partners Section */
.partners {
  padding: var(--space-xl) 0;
  background-color: var(--gray-50);
}

.partners-grid {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-2xl);
  flex-wrap: wrap;
}

/* Features Section */
.features {
  padding: var(--space-2xl) 0;
  background-color: var(--gray-900);
  color: var(--white);
}

.features-title {
  text-align: center;
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--space-2xl);
}

.highlight {
  color: var(--primary);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
}

.feature-card {
  text-align: center;
  padding: var(--space-lg);
}

.feature-phone {
  margin-bottom: var(--space-md);
  display: flex;
  justify-content: center;
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.feature-card p {
  color: var(--gray-300);
}

/* Gallery Section */
.gallery {
  padding: var(--space-2xl) 0;
  background-color: var(--white);
}

.gallery h2 {
  text-align: center;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--space-2xl);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
}

.gallery-item {
  text-align: center;
  padding: var(--space-md);
  border: 1px solid var(--gray-200);
  border-radius: 12px;
  transition: transform 0.2s, box-shadow 0.2s;
}

.gallery-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.gallery-item h3 {
  margin-top: var(--space-md);
  font-weight: 600;
  color: var(--gray-700);
}

/* Testimonials Section */
.testimonials {
  padding: var(--space-2xl) 0;
  background-color: var(--gray-50);
}

.testimonials h2 {
  text-align: center;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--space-2xl);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-lg);
}

.testimonial {
  background-color: var(--white);
  padding: var(--space-lg);
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.testimonial blockquote {
  font-size: 1.125rem;
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-md);
  color: var(--gray-700);
}

.testimonial cite {
  font-style: normal;
}

.testimonial strong {
  display: block;
  font-weight: 600;
  color: var(--gray-900);
}

.testimonial span {
  color: var(--gray-500);
  font-size: 0.875rem;
}

/* App Preview Section */
.app-preview {
  padding: var(--space-2xl) 0;
  background-color: var(--white);
  text-align: center;
}

.app-preview h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--space-xl);
}

.app-mockup {
  display: flex;
  justify-content: center;
}

/* CTA Section */
.cta {
  padding: var(--space-2xl) 0;
  background-color: var(--gray-900);
  color: var(--white);
  text-align: center;
}

.cta h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--space-md);
}

.cta p {
  font-size: 1.125rem;
  color: var(--gray-300);
  margin-bottom: var(--space-xl);
}

.cta-form {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  max-width: 400px;
  margin: 0 auto;
}

.cta-form input[type="email"] {
  flex: 1;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--gray-600);
  border-radius: 8px;
  font-size: 1rem;
  background-color: var(--gray-800);
  color: var(--white);
}

/* Buttons */
.btn {
  padding: var(--space-sm) var(--space-lg);
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  display: inline-block;
}

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

.btn-primary:hover {
  background-color: var(--primary-dark);
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Success Message */
.success-message {
  padding: var(--space-lg) 0;
  background-color: var(--success);
  color: var(--white);
  text-align: center;
}

.success-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
}

.success-content h3 {
  font-size: 1.5rem;
  font-weight: 700;
}

/* Footer */
.footer {
  background-color: var(--gray-50);
  padding: var(--space-2xl) 0 var(--space-lg);
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr auto auto auto;
  gap: var(--space-2xl);
  align-items: start;
}

.footer-brand p {
  margin-top: var(--space-md);
  color: var(--gray-600);
  font-size: 0.875rem;
  line-height: var(--line-height-relaxed);
}

.footer-brand a {
  color: var(--gray-700);
  text-decoration: none;
}

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

.footer-column h4 {
  font-weight: 600;
  margin-bottom: var(--space-md);
  color: var(--gray-900);
}

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

.footer-column li {
  margin-bottom: var(--space-xs);
}

.footer-column a {
  color: var(--gray-600);
  text-decoration: none;
  transition: color 0.2s;
}

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

.footer-newsletter form {
  display: flex;
  gap: var(--space-xs);
}

.footer-newsletter input {
  padding: var(--space-sm);
  border: 1px solid var(--gray-300);
  border-radius: 8px;
  font-size: 0.875rem;
}

.footer-newsletter .btn {
  padding: var(--space-sm) var(--space-md);
  font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-sm);
  }

  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--space-lg);
  }

  .hero-form {
    flex-direction: column;
    max-width: none;
  }

  .partners-grid {
    gap: var(--space-lg);
  }

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

  .gallery-grid {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  }

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

  .cta-form {
    flex-direction: column;
    max-width: none;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .footer-newsletter form {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem;
  }

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

  .gallery-grid {
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--space-sm);
  }
}