:root {
  --primary-color: #3b82f6;
  --primary-dark: #1e40af;
  --primary-light: #93c5fd;
  --secondary-color: #f59e0b;
  --secondary-dark: #d97706;
  --secondary-light: #fcd34d;
  --background-color: #f8fafc;
  --component-bg: #ffffff;
  --border-color: #e2e8f0;
  --text-color: #1e293b;
  --text-muted: #64748b;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --radius: 0.375rem;
}
/* Reset and base styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background-color: var(--background-color);
  color: var(--text-color);
  line-height: 1.5;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color 0.2s;
}

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

img {
  max-width: 100%;
  height: auto;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 0.5em;
}

p {
  margin-bottom: 1rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1rem;
  background-color: var(--component-bg);
  color: var(--text-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
}

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

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

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

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

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

.btn-lg {
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
}

.btn-block {
  display: block;
  width: 100%;
}

/* Header */
.site-header {
  background-color: var(--component-bg);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.logo {
  display: flex;
  align-items: center;
  font-weight: 700;
  font-size: 1.25rem;
}

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

.logo-icon {
  color: var(--secondary-color);
  margin-right: 0.5rem;
  font-size: 1.5rem;
}

.main-nav {
  display: none;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: 1.5rem;
}

.nav-link {
  color: var(--text-color);
  font-weight: 500;
  font-size: 0.875rem;
  transition: color 0.2s;
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.mobile-menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  background: none;
  border: none;
  font-size: 1.25rem;
  cursor: pointer;
  color: var(--text-color);
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 4rem;
  left: 0;
  right: 0;
  background-color: var(--component-bg);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow);
  z-index: 99;
  padding: 1rem;
}

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

.mobile-nav-list {
  list-style: none;
}

.mobile-nav-link {
  display: block;
  padding: 0.75rem 0;
  color: var(--text-color);
  font-weight: 500;
  border-bottom: 1px solid var(--border-color);
}

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

.mobile-nav-link.highlight {
  color: var(--primary-color);
  font-weight: 600;
}

/* Hero Section */
.hero {
  padding: 4rem 0;
  background-color: var(--component-bg);
  border-bottom: 1px solid var(--border-color);
}

.hero-container {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

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

.hero-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.hero-description {
  font-size: 1.125rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

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

.hero-img {
  max-width: 100%;
  height: auto;
}

/* Features Section */
.features-section {
  padding: 4rem 0;
}

.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 3rem;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.section-description {
  font-size: 1.125rem;
  color: var(--text-muted);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: 1.5rem;
}

.feature-card {
  background-color: var(--component-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: transform 0.2s, box-shadow 0.2s;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  background-color: var(--primary-light);
  color: var(--primary-dark);
  border-radius: 50%;
  margin-bottom: 1rem;
  font-size: 1.5rem;
}

.feature-title {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.feature-description {
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* How It Works Section */
.how-it-works-section {
  padding: 4rem 0;
  background-color: var(--background-color);
}

.steps-container {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.step-card {
  background-color: var(--component-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.5rem;
  position: relative;
}

.step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  background-color: var(--primary-color);
  color: white;
  border-radius: 50%;
  font-weight: 700;
  margin-bottom: 1rem;
}

.step-title {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.step-description {
  color: var(--text-muted);
  font-size: 0.875rem;
}

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

/* Resources Section */
.resources-section {
  padding: 4rem 0;
  background-color: var(--component-bg);
  border-top: 1px solid var(--border-color);
}

.resources-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: 1.5rem;
}

.resource-card {
  background-color: var(--background-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.resource-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  background-color: var(--primary-light);
  color: var(--primary-dark);
  border-radius: 50%;
  margin-bottom: 1rem;
  font-size: 1.5rem;
}

.resource-title {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.resource-description {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: 1rem;
}

.resource-link {
  display: inline-block;
  font-weight: 500;
  color: var(--primary-color);
}

.resource-link:hover {
  text-decoration: underline;
}

/* Footer */
.site-footer {
  background-color: var(--component-bg);
  border-top: 1px solid var(--border-color);
  padding: 2rem 0;
}

.footer-container {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.footer-info {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-logo {
  display: flex;
  align-items: center;
  font-weight: 700;
}

.copyright {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-link {
  font-size: 0.875rem;
  color: var(--text-muted);
}

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

.disclaimer {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
}

/* Page Header */
.page-header {
  background-color: var(--component-bg);
  border-bottom: 1px solid var(--border-color);
  padding: 3rem 0;
  text-align: center;
}

.page-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.page-description {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
}

/* Content Section */
.content-section {
  padding: 3rem 0;
}

.content-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.content-sidebar {
  display: none;
}

.sidebar-title {
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.sidebar-nav-list {
  list-style: none;
}

.sidebar-nav-link {
  display: block;
  padding: 0.5rem 0;
  color: var(--text-color);
  border-bottom: 1px solid var(--border-color);
  transition: color 0.2s;
}

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

.article-section {
  margin-bottom: 3rem;
}

.article-title {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-color);
}

.article-list {
  margin-left: 1.5rem;
  margin-bottom: 1rem;
}

.article-list li {
  margin-bottom: 0.5rem;
}

/* Contact Section */
.contact-section {
  padding: 3rem 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.card {
  background-color: var(--component-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  overflow: hidden;
}

.card-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.card-title {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.card-description {
  color: var(--text-muted);
  font-size: 0.875rem;
}

.card-content {
  padding: 1.5rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  background-color: var(--background-color);
  font-family: inherit;
  font-size: 1rem;
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact-info-item {
  display: flex;
  gap: 1rem;
}

.contact-info-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  background-color: var(--primary-light);
  color: var(--primary-dark);
  border-radius: 50%;
  font-size: 1rem;
}

.contact-info-title {
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.contact-info-text {
  color: var(--text-muted);
  font-size: 0.875rem;
}

.developer-name {
  font-size: 1.125rem;
  margin-bottom: 0.25rem;
}

.developer-role {
  color: var(--primary-color);
  font-size: 0.875rem;
  margin-bottom: 1rem;
}

.developer-bio {
  color: var(--text-muted);
  font-size: 0.875rem;
}

.mt-4 {
  margin-top: 1.5rem;
}

/* Responsive styles */
@media (min-width: 640px) {
  .features-grid,
  .resources-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .main-nav {
    display: block;
  }

  .mobile-menu-btn {
    display: none;
  }

  .hero-container {
    flex-direction: row;
    align-items: center;
  }

  .hero-content {
    flex: 1;
  }

  .hero-image {
    flex: 1;
  }

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

  .footer-container {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }

  .footer-links {
    flex-direction: row;
    gap: 1.5rem;
  }
}

@media (min-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .content-grid {
    grid-template-columns: 250px 1fr;
  }

  .content-sidebar {
    display: block;
    position: sticky;
    top: 5rem;
    height: calc(100vh - 5rem);
    overflow-y: auto;
    padding-right: 1rem;
  }

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

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