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

@font-face {
  font-family: 'Inter';
  src: url('../fonts/inter-regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Inter';
  src: url('../fonts/inter-medium.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Inter';
  src: url('../fonts/inter-semibold.woff2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

:root {
  --primary: #22C55E;
  --primary-dark: #16A34A;
  --secondary: #14B8A6;
  --accent: #F97316;
  --success: #10B981;
  --warning: #F59E0B;
  --error: #EF4444;
  --neutral-50: #FAFAFA;
  --neutral-100: #F5F5F5;
  --neutral-200: #E5E5E5;
  --neutral-300: #D4D4D4;
  --neutral-400: #A3A3A3;
  --neutral-500: #737373;
  --neutral-600: #525252;
  --neutral-700: #404040;
  --neutral-800: #262626;
  --neutral-900: #171717;
  --white: #FFFFFF;
  --spacing: 8px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  color: var(--neutral-800);
  background-color: var(--white);
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  font-weight: 600;
  color: var(--neutral-900);
}

h1 { font-size: clamp(2rem, 4vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }
h4 { font-size: 1.125rem; }

p {
  line-height: 1.5;
  color: var(--neutral-600);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: calc(var(--spacing) * 1.5) calc(var(--spacing) * 3);
  border: none;
  border-radius: calc(var(--spacing) * 1);
  font-size: 1rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s ease;
  min-height: 48px;
}

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

.btn-primary:hover {
  background-color: var(--primary-dark);
  transform: translateY(-1px);
}

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

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

.btn-large {
  padding: calc(var(--spacing) * 2) calc(var(--spacing) * 4);
  font-size: 1.125rem;
}

/* Header */
.header {
  background-color: var(--white);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing) 0;
  min-height: 64px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: calc(var(--spacing) * 1);
}

.brand-logo {
  width: 32px;
  height: 32px;
}

.brand-text {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--neutral-900);
}

.nav-menu {
  display: none;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: calc(var(--spacing) * 4);
  margin: 0;
  padding: 0;
}

.nav-link {
  color: var(--neutral-600);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s ease;
}

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

.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1001;
}

.hamburger-line {
  width: 24px;
  height: 2px;
  background-color: var(--neutral-700);
  transition: all 0.3s ease;
  transform-origin: center;
  margin: 2px 0;
}

.nav-toggle.active .hamburger-line:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

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

.nav-toggle.active .hamburger-line:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Mobile Navigation */
@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background-color: var(--white);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    display: block;
  }

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

  .nav-list {
    flex-direction: column;
    padding: calc(var(--spacing) * 2);
    gap: calc(var(--spacing) * 2);
  }

  .nav-link {
    display: block;
    padding: calc(var(--spacing) * 1) 0;
  }
}

@media (min-width: 769px) {
  .nav-menu {
    display: block !important;
  }

  .nav-toggle {
    display: none;
  }
}

/* Main Content */
main {
  margin-top: 64px;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, #F0FDF4 0%, #ECFDF5 100%);
  padding: calc(var(--spacing) * 10) 0;
  min-height: 80vh;
  display: flex;
  align-items: center;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: calc(var(--spacing) * 6);
  align-items: center;
}

.hero-title {
  margin-bottom: calc(var(--spacing) * 3);
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  font-size: 1.125rem;
  margin-bottom: calc(var(--spacing) * 4);
}

.hero-actions {
  display: flex;
  flex-direction: column;
  gap: calc(var(--spacing) * 3);
  align-items: flex-start;
}

.hero-rating {
  display: flex;
  align-items: center;
  gap: calc(var(--spacing) * 1);
}

.stars {
  display: flex;
  gap: calc(var(--spacing) / 2);
}

.star {
  width: 16px;
  height: 16px;
}

.rating-text {
  font-size: 0.875rem;
  color: var(--neutral-500);
}

.phone-mockup {
  display: flex;
  justify-content: center;
  align-items: center;
}

.phone-frame {
  width: 300px;
  height: 440px;
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.15));
}

/* Features Section */
.features {
  padding: calc(var(--spacing) * 12) 0;
  background-color: var(--white);
}

.section-header {
  text-align: center;
  margin-bottom: calc(var(--spacing) * 8);
}

.section-title {
  margin-bottom: calc(var(--spacing) * 2);
}

.section-description {
  font-size: 1.125rem;
  max-width: 600px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: calc(var(--spacing) * 4);
}

.feature-card {
  text-align: center;
  padding: calc(var(--spacing) * 4);
  border-radius: calc(var(--spacing) * 2);
  background-color: var(--white);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.feature-icon {
  display: flex;
  justify-content: center;
  margin-bottom: calc(var(--spacing) * 3);
}

.feature-icon svg {
  width: 48px;
  height: 48px;
}

.feature-title {
  margin-bottom: calc(var(--spacing) * 2);
}

.feature-description {
  line-height: 1.6;
}

/* Process Section */
.process {
  padding: calc(var(--spacing) * 12) 0;
  background-color: var(--neutral-50);
}

.process-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: calc(var(--spacing) * 8);
  align-items: center;
}

.process-steps {
  margin-top: calc(var(--spacing) * 4);
}

.process-step {
  display: flex;
  gap: calc(var(--spacing) * 3);
  margin-bottom: calc(var(--spacing) * 4);
}

.step-number {
  width: 40px;
  height: 40px;
  background-color: var(--primary);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  flex-shrink: 0;
}

.step-content h3 {
  margin-bottom: calc(var(--spacing) * 1);
}

.illustrations-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: calc(var(--spacing) * 2);
}

.illustration {
  width: 120px;
  height: 120px;
  border-radius: calc(var(--spacing) * 1);
  transition: transform 0.2s ease;
}

.illustration:hover {
  transform: scale(1.05);
}

/* Testimonials Section */
.testimonials {
  padding: calc(var(--spacing) * 12) 0;
  background-color: var(--white);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: calc(var(--spacing) * 4);
}

.testimonial-card {
  padding: calc(var(--spacing) * 4);
  background-color: var(--neutral-50);
  border-radius: calc(var(--spacing) * 2);
  border-left: 4px solid var(--primary);
}

.testimonial-content {
  margin-bottom: calc(var(--spacing) * 3);
}

.testimonial-content p {
  font-size: 1.125rem;
  font-style: italic;
  color: var(--neutral-700);
}

.author-name {
  font-weight: 600;
  color: var(--neutral-900);
  margin-bottom: calc(var(--spacing) / 2);
}

.author-role {
  color: var(--neutral-500);
  font-size: 0.875rem;
}

/* Pricing Section */
.pricing {
  padding: calc(var(--spacing) * 12) 0;
  background-color: var(--neutral-50);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: calc(var(--spacing) * 4);
}

.pricing-card {
  background-color: var(--white);
  border-radius: calc(var(--spacing) * 2);
  padding: calc(var(--spacing) * 4);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  transition: transform 0.2s ease;
}

.pricing-card.featured {
  transform: scale(1.05);
  border: 2px solid var(--primary);
  box-shadow: 0 8px 25px rgba(34, 197, 94, 0.15);
}

.pricing-card:hover {
  transform: translateY(-4px);
}

.pricing-card.featured:hover {
  transform: scale(1.05) translateY(-4px);
}

.pricing-header {
  text-align: center;
  margin-bottom: calc(var(--spacing) * 4);
}

.plan-name {
  margin-bottom: calc(var(--spacing) * 1);
}

.plan-price {
  font-size: 2rem;
  font-weight: 600;
  color: var(--primary);
}

.plan-price span {
  font-size: 1rem;
  font-weight: 400;
  color: var(--neutral-500);
}

.plan-features {
  list-style: none;
  margin-bottom: calc(var(--spacing) * 4);
}

.plan-features li {
  padding: calc(var(--spacing) * 1) 0;
  border-bottom: 1px solid var(--neutral-200);
  position: relative;
  padding-left: calc(var(--spacing) * 3);
}

.plan-features li:before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: 600;
}

.plan-features li:last-child {
  border-bottom: none;
}

/* CTA Section */
.cta {
  padding: calc(var(--spacing) * 12) 0;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: var(--white);
  text-align: center;
}

.cta-title {
  color: var(--white);
  margin-bottom: calc(var(--spacing) * 3);
}

.cta-description {
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: calc(var(--spacing) * 4);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-actions {
  display: flex;
  gap: calc(var(--spacing) * 2);
  justify-content: center;
  flex-wrap: wrap;
}

/* Footer */
.footer {
  background-color: var(--neutral-800);
  color: var(--neutral-300);
  padding: calc(var(--spacing) * 6) 0 calc(var(--spacing) * 4) 0;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: calc(var(--spacing) * 4);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: calc(var(--spacing) * 1);
}

.footer-brand .brand-text {
  color: var(--white);
}

.footer-nav {
  display: flex;
  gap: calc(var(--spacing) * 3);
}

.footer-nav a {
  color: var(--neutral-300);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

.footer-bottom {
  text-align: center;
  padding-top: calc(var(--spacing) * 3);
  border-top: 1px solid var(--neutral-700);
}

.footer-bottom p {
  font-size: 0.875rem;
  color: var(--neutral-400);
}

.footer-bottom a {
  color: var(--neutral-300);
  text-decoration: none;
}

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

/* Responsive Design */
@media (max-width: 1024px) {
  .hero-content,
  .process-content {
    grid-template-columns: 1fr;
    gap: calc(var(--spacing) * 4);
    text-align: center;
  }

  .hero-actions {
    align-items: center;
  }

  .illustrations-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 calc(var(--spacing) * 2);
  }

  .hero {
    padding: calc(var(--spacing) * 6) 0;
  }

  .phone-frame {
    width: 250px;
    height: 380px;
  }

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

  .illustrations-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .cta-actions {
    flex-direction: column;
    align-items: center;
  }

  .footer-content {
    flex-direction: column;
    gap: calc(var(--spacing) * 2);
    text-align: center;
  }

  .footer-nav {
    flex-wrap: wrap;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .process-step {
    flex-direction: column;
    text-align: center;
  }

  .step-number {
    align-self: center;
  }

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

  .illustration {
    margin: 0 auto;
  }
}