/* CSS Variables for Design System */
:root {
  /* Colors */
  --primary: #1e40af;
  --primary-dark: #1e3a8a;
  --primary-light: #3b82f6;
  --secondary: #64748b;
  --accent: #0ea5e9;
  --background: #ffffff;
  --surface: #f8fafc;
  --muted: #f1f5f9;
  --border: #e2e8f0;
  --text: #0f172a;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* Typography */
  --font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 3.75rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-family);
  line-height: 1.6;
  color: var(--text);
  background-color: var(--background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: var(--font-size-5xl);
}
h2 {
  font-size: var(--font-size-4xl);
}
h3 {
  font-size: var(--font-size-2xl);
}
h4 {
  font-size: var(--font-size-xl);
}
h5 {
  font-size: var(--font-size-lg);
}
h6 {
  font-size: var(--font-size-base);
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--text-muted);
}

.text-primary {
  color: var(--primary);
}
.text-muted {
  color: var(--text-muted);
}
.text-light {
  color: var(--text-light);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
}

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

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

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

.btn-secondary:hover {
  background-color: var(--text-muted);
  border-color: var(--text-muted);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

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

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

.btn-ghost {
  background-color: transparent;
  color: var(--text);
  border-color: transparent;
}

.btn-ghost:hover {
  background-color: var(--muted);
  color: var(--text);
}

.btn-lg {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-base);
}

.btn-full {
  width: 100%;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
  color: var(--text);
}

.logo-icon {
  width: 2rem;
  height: 2rem;
  background-color: var(--primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: var(--font-size-sm);
}

.logo-text {
  font-size: var(--font-size-xl);
  font-weight: 700;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

.nav-link {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text);
  text-decoration: none;
  transition: color var(--transition-base);
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
  color: var(--text);
}

@media (max-width: 768px) {
  .nav {
    display: none;
  }

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

  .header-actions .btn:not(.mobile-menu-btn) {
    display: none;
  }
}

/* Hero Section */
.hero-section {
  position: relative;
  padding: var(--spacing-3xl) 0;
  background: linear-gradient(135deg, var(--background) 0%, var(--muted) 100%);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 80%, rgba(30, 64, 175, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(30, 64, 175, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(30, 64, 175, 0.05) 0%, transparent 50%);
}

.hero-content {
  position: relative;
  z-index: 10;
  max-width: 64rem;
  margin: 0 auto;
  text-align: center;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-2xl);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text);
  margin-bottom: var(--spacing-xl);
}

.status-dot {
  width: 0.5rem;
  height: 0.5rem;
  background-color: var(--success);
  border-radius: 50%;
}

.hero-title {
  font-size: var(--font-size-6xl);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: var(--spacing-xl);
}

.hero-description {
  font-size: var(--font-size-xl);
  color: var(--text-muted);
  max-width: 32rem;
  margin: 0 auto var(--spacing-2xl);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  justify-content: center;
}

@media (max-width: 768px) {
  .hero-section {
    padding: var(--spacing-2xl) 0;
  }

  .hero-title {
    font-size: var(--font-size-4xl);
  }

  .hero-description {
    font-size: var(--font-size-lg);
  }

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

  .hero-actions .btn {
    width: 100%;
    max-width: 20rem;
  }
}

/* Section Styles */
.section-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.section-description {
  font-size: var(--font-size-xl);
  color: var(--text-muted);
  max-width: 32rem;
  margin: 0 auto;
}

/* Features Section */
.features-section {
  padding: var(--spacing-3xl) 0;
  background-color: rgba(241, 245, 249, 0.3);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-2xl);
}

.feature-card {
  background-color: var(--background);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  text-align: center;
  transition: all var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: rgba(30, 64, 175, 0.2);
}

.feature-icon {
  width: 4rem;
  height: 4rem;
  background-color: rgba(30, 64, 175, 0.1);
  border-radius: var(--radius-2xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-xl);
  color: var(--primary);
}

.feature-icon i {
  width: 2rem;
  height: 2rem;
}

.feature-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

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

/* Services Section */
.services-section {
  padding: var(--spacing-3xl) 0;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-xl);
}

.service-card {
  background-color: var(--background);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  transition: all var(--transition-base);
}

.service-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(30, 64, 175, 0.2);
}

.service-icon {
  width: 3rem;
  height: 3rem;
  background-color: rgba(30, 64, 175, 0.1);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-md);
  color: var(--primary);
  transition: background-color var(--transition-base);
}

.service-card:hover .service-icon {
  background-color: rgba(30, 64, 175, 0.2);
}

.service-icon i {
  width: 1.5rem;
  height: 1.5rem;
}

.service-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.service-description {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

/* About Section */
.about-section {
  padding: var(--spacing-3xl) 0;
  background-color: rgba(241, 245, 249, 0.3);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.about-text p {
  margin-bottom: var(--spacing-md);
}

.about-visual {
  position: relative;
}

.about-card {
  aspect-ratio: 1;
  background: linear-gradient(135deg, rgba(30, 64, 175, 0.2) 0%, rgba(30, 64, 175, 0.05) 100%);
  border-radius: var(--radius-2xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.about-icon {
  width: 6rem;
  height: 6rem;
  background-color: var(--primary);
  border-radius: var(--radius-2xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-md);
  color: white;
}

.about-icon i {
  width: 3rem;
  height: 3rem;
}

@media (max-width: 768px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }
}

/* How it Works Section */
.how-it-works-section {
  padding: var(--spacing-3xl) 0;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-2xl);
}

.step {
  text-align: center;
}

.step-number {
  width: 4rem;
  height: 4rem;
  background-color: var(--primary);
  border-radius: var(--radius-2xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-xl);
  color: white;
  font-size: var(--font-size-2xl);
  font-weight: 700;
}

.step-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.step-description {
  color: var(--text-muted);
}

/* Testimonials Section */
.testimonials-section {
  padding: var(--spacing-3xl) 0;
  background-color: rgba(241, 245, 249, 0.3);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-2xl);
}

.testimonial-card {
  background-color: var(--background);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
}

.stars {
  display: flex;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
}

.star {
  width: 1rem;
  height: 1rem;
  color: #fbbf24;
}

.star.filled {
  fill: #fbbf24;
}

.star.half {
  fill: url(#half);
}

.testimonial-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.testimonial-text {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin-bottom: var(--spacing-md);
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.author-avatar {
  width: 2.5rem;
  height: 2.5rem;
  background-color: var(--muted);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
}

.author-name {
  font-size: var(--font-size-sm);
  font-weight: 500;
  margin-bottom: 0;
}

.author-role {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  margin-bottom: 0;
}

/* Download Section */
.download-section {
  padding: var(--spacing-3xl) 0;
  background-color: var(--primary);
  color: white;
}

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

.download-section .section-title {
  color: white;
}

.download-section .section-description {
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--spacing-2xl);
}

/* Contact Section */
.contact-section {
  padding: var(--spacing-3xl) 0;
  background-color: rgba(241, 245, 249, 0.3);
}

.contact-form-wrapper {
  max-width: 32rem;
  margin: 0 auto;
}

.contact-card {
  background-color: var(--background);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.form-group label {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text);
}

.form-group input,
.form-group textarea {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background-color: var(--background);
  font-size: var(--font-size-sm);
  transition: all var(--transition-base);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

@media (max-width: 768px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

/* Footer */
.footer {
  background-color: var(--background);
  border-top: 1px solid var(--border);
  padding: var(--spacing-3xl) 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-3xl);
}

.footer-description {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

.footer-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.footer-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-list a {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition-base);
}

.footer-list a:hover {
  color: var(--text);
}

.contact-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: var(--spacing-2xl);
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
}

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

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}

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

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

::-webkit-scrollbar-thumb {
  background: rgba(30, 64, 175, 0.5);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(30, 64, 175, 0.7);
}

/* Loading states */
.loading {
  opacity: 0.7;
  pointer-events: none;
}

/* Responsive utilities */
@media (max-width: 768px) {
  .feature-card:hover,
  .service-card:hover {
    transform: none;
  }
}