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

:root {
  --primary: #3B82F6;
  --primary-dark: #2563EB;
  --secondary: #10B981;
  --bg: #F9FAFB;
  --bg-card: #FFFFFF;
  --text: #111827;
  --text-muted: #6B7280;
  --border: #E5E7EB;
  --shadow: 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);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */
header {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
  font-size: 1.25rem;
}

.logo img {
  width: 40px;
  height: 40px;
}

nav {
  display: flex;
  gap: 2rem;
  align-items: center;
}

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

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

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.mobile-menu-btn img,
.mobile-menu-btn svg {
  width: 24px;
  height: 24px;
}

/* Main Content */
main {
  flex: 1;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, #3B82F6 0%, #8B5CF6 100%);
  color: white;
  padding: 5rem 0;
  text-align: center;
}

.hero h1 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
  line-height: 1.2;
}

.hero p {
  font-size: 1.125rem;
  max-width: 700px;
  margin: 0 auto 2.5rem;
  opacity: 0.9;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 1rem 2rem;
  border-radius: 0.5rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s;
  border: none;
  cursor: pointer;
  text-align: center;
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

.btn-secondary {
  background: white;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-secondary:hover {
  background: #F3F4F6;
  transform: translateY(-2px);
}

.cta-btn {
  background: var(--primary);
  color: white;
  font-weight: 600;
  padding: 1rem 2rem;
  border-radius: 0.5rem;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  display: inline-block;
  text-align: center;
  text-decoration: none;
}

.cta-btn:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

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

.cta-btn.btn-secondary:hover {
  background: #F3F4F6;
}

.cta-floating {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 1000;
  box-shadow: var(--shadow-lg);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

/* Sections */
section {
  padding: 4rem 0;
}

.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 1rem;
}

.section-subtitle {
  text-align: center;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 3rem;
  font-size: 1.125rem;
}

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

.card {
  background: var(--bg-card);
  border-radius: 1rem;
  padding: 2rem;
  box-shadow: var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 1.5rem;
  color: var(--primary);
}

.card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.card p {
  color: var(--text-muted);
}

/* Features */
.features {
  background: white;
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.feature-icon {
  width: 24px;
  height: 24px;
  color: var(--secondary);
  flex-shrink: 0;
  margin-top: 0.25rem;
}

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

.blog-card {
  background: var(--bg-card);
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.2s;
}

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

.blog-card-content {
  padding: 1.5rem;
}

.blog-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.blog-card p {
  color: var(--text-muted);
  margin-bottom: 1rem;
}

/* Article */
.article {
  max-width: 800px;
  margin: 0 auto;
}

.article h1 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
  line-height: 1.2;
}

.article-meta {
  color: var(--text-muted);
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.article h2 {
  font-size: 1.75rem;
  margin: 2.5rem 0 1rem;
}

.article p {
  margin-bottom: 1.5rem;
  color: var(--text);
}

.article ul, .article ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}

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

.article .back-link {
  display: inline-block;
  margin-bottom: 2rem;
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
}

.article .back-link:hover {
  text-decoration: underline;
}

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

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

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  font-size: 1rem;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
}

/* Footer */
footer {
  background: var(--text);
  color: white;
  padding: 3rem 0;
  margin-top: 4rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-section h4 {
  margin-bottom: 1rem;
  font-size: 1.125rem;
}

.footer-section a {
  display: block;
  color: #D1D5DB;
  text-decoration: none;
  margin-bottom: 0.5rem;
  transition: color 0.2s;
}

.footer-section a:hover {
  color: white;
}

.footer-description {
  color: #F3F4F6;
  margin-bottom: 1rem;
  line-height: 1.6;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid #374151;
  text-align: center;
  color: #9CA3AF;
}

/* Hero variations */
.hero-small {
  padding: 3rem 0;
}

.gradient-section {
  background: linear-gradient(135deg, #3B82F6 0%, #8B5CF6 100%);
  color: white;
  padding: 4rem 0;
}

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

.gradient-section .section-subtitle {
  color: rgba(255,255,255,0.9);
}

/* FAQ Accordion */
.faq-item {
  background: var(--bg-card);
  border-radius: 0.5rem;
  margin-bottom: 1rem;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.faq-question {
  width: 100%;
  padding: 1.25rem 1.5rem;
  background: none;
  border: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-size: 1.125rem;
  font-weight: 600;
  text-align: left;
  color: var(--text);
}

.faq-question svg {
  width: 20px;
  height: 20px;
  transition: transform 0.2s;
}

.faq-question[aria-expanded="true"] svg {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 1.5rem;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
}

.faq-answer.active {
  padding: 0 1.5rem 1.5rem;
  max-height: 2000px;
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2rem;
  }

  .hero p {
    font-size: 1rem;
  }

  nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-card);
    flex-direction: column;
    padding: 1rem;
    border-top: 1px solid var(--border);
    box-shadow: var(--shadow);
  }

  nav.active {
    display: flex;
  }

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

  .section-title {
    font-size: 1.75rem;
  }

  .card-grid,
  .blog-grid {
    grid-template-columns: 1fr;
  }
}

/* Utility */
.text-center { text-align: center; }
.mt-2 { margin-top: 2rem; }
.mb-2 { margin-bottom: 2rem; }
.py-2 { padding-top: 2rem; padding-bottom: 2rem; }
.text-muted { color: var(--text-muted); }
.ml-2 { margin-left: 2rem; }

.btn-sm {
  font-size: 0.875rem;
  padding: 0.5rem 1rem;
}

/* Utility classes for layout and spacing */
.spacer {
  height: 100px;
}

.ml-1 {
  margin-left: 1rem;
}

.btn-full {
  width: 100%;
}

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

.mx-auto {
  margin-left: auto;
  margin-right: auto;
}

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

.mt-1 {
  margin-top: 1.5rem;
}

/* Steps for How It Works page */
.steps-container {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
  margin-top: 3rem;
}

.step-item {
  max-width: 300px;
  text-align: center;
}

.step-circle {
  width: 80px;
  height: 80px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: bold;
  margin: 0 auto 1.5rem;
}