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

:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #818cf8;
  --secondary: #f1f5f9;
  --text: #1e293b;
  --text-light: #4b5563;
  --white: #ffffff;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --radius: 12px;
  --max-width: 1200px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  color: var(--text);
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  line-height: 1.6;
  min-height: 100vh;
}

/* Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
header {
  background: var(--white);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
  font-size: 1.5rem;
}

.logo svg {
  width: 40px;
  height: 40px;
  color: var(--primary);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle svg {
  width: 28px;
  height: 28px;
  color: var(--text);
}

nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

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

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

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--white);
  padding: 100px 0 120px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.3;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 24px;
  line-height: 1.1;
}

.hero p {
  font-size: 1.25rem;
  opacity: 0.95;
  max-width: 700px;
  margin: 0 auto 40px;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 60px;
  margin-top: 60px;
  flex-wrap: wrap;
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  display: block;
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.85;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* CTA Button */
.cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--white);
  color: var(--primary);
  padding: 18px 48px;
  border: none;
  border-radius: var(--radius);
  font-size: 1.125rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  box-shadow: var(--shadow-lg);
  white-space: nowrap;
}

.cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.15), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  background: #f8fafc;
}

.cta-floating {
  position: fixed;
  bottom: 24px;
  right: 24px;
  padding: 16px 32px;
  z-index: 999;
  animation: pulse 2s infinite;
  box-shadow: var(--shadow-lg);
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.03); }
}

/* Features Section */
.features {
  padding: 100px 0;
  background: var(--white);
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 60px;
  color: var(--text);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
}

.feature-card {
  background: var(--secondary);
  padding: 40px;
  border-radius: var(--radius);
  transition: transform 0.2s, box-shadow 0.2s;
}

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

.feature-icon {
  width: 64px;
  height: 64px;
  background: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: var(--white);
  font-size: 2rem;
  font-weight: 700;
}

.feature-icon svg {
  width: 32px;
  height: 32px;
}

.feature-card h3 {
  font-size: 1.5rem;
  margin-bottom: 16px;
  color: var(--text);
}

.feature-card p {
  color: var(--text-light);
  line-height: 1.7;
}

/* Content Sections */
.content-section {
  padding: 100px 0;
}

.content-section:nth-child(even) {
  background: var(--white);
}

.content-wrapper {
  max-width: 800px;
  margin: 0 auto;
}

.content-wrapper h2 {
  font-size: 2.5rem;
  margin-bottom: 30px;
  color: var(--text);
}

.content-wrapper p {
  margin-bottom: 20px;
  color: var(--text-light);
  font-size: 1.125rem;
  line-height: 1.8;
}

/* Blog Section */
.blog {
  padding: 100px 0;
  background: var(--secondary);
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 30px;
  margin-top: 60px;
}

.blog-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
  text-decoration: none;
  color: inherit;
}

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

.blog-card-content {
  padding: 30px;
}

.blog-card h3 {
  font-size: 1.5rem;
  margin-bottom: 16px;
  color: var(--text);
  line-height: 1.3;
}

.blog-card p {
  color: var(--text-light);
  line-height: 1.6;
  margin-bottom: 20px;
}

.blog-card .read-more {
  color: var(--primary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

/* Single Blog Post */
.blog-post {
  padding: 100px 0;
  background: var(--white);
}

.post-content {
  max-width: 800px;
  margin: 0 auto;
}

.post-content h1 {
  font-size: 2.5rem;
  margin-bottom: 30px;
  line-height: 1.2;
  color: var(--text);
}

.post-meta {
  color: var(--text-light);
  margin-bottom: 40px;
  font-size: 0.9rem;
}

.post-body {
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--text-light);
}

.post-body p {
  margin-bottom: 24px;
}

.post-body h2 {
  font-size: 1.75rem;
  margin: 48px 0 24px;
  color: var(--text);
}

.post-body ul, .post-body ol {
  margin: 24px 0;
  padding-left: 24px;
}

.post-body li {
  margin-bottom: 12px;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 40px;
  text-decoration: none;
}

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

/* Footer */
footer {
  background: var(--text);
  color: var(--white);
  padding: 60px 0 30px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-section h4 {
  font-size: 1.125rem;
  margin-bottom: 20px;
  color: var(--white);
}

.footer-section a {
  display: block;
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  margin-bottom: 12px;
  transition: color 0.2s;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 30px;
  text-align: center;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9rem;
}

/* FAQ Accordion */
.faq-item {
  background: var(--secondary);
  border-radius: var(--radius);
  margin-bottom: 16px;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 24px;
  background: none;
  border: none;
  text-align: left;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-question::after {
  content: '+';
  font-size: 1.5rem;
  color: var(--primary);
  transition: transform 0.2s;
}

.faq-question[aria-expanded="true"]::after {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out, padding 0.3s ease-out;
  color: var(--text-light);
  line-height: 1.7;
}

.faq-answer.open {
  padding: 0 24px 24px;
  max-height: 1000px;
}

/* Contact Form */
.contact-form {
  max-width: 600px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: var(--text);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 18px;
  border: 2px solid #e2e8f0;
  border-radius: var(--radius);
  font-size: 1rem;
  transition: border-color 0.2s;
  font-family: inherit;
}

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

.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

/* Utility and helper classes */
.bg-secondary {
  background: var(--secondary);
}
.text-center {
  text-align: center;
}
.mt-60 {
  margin-top: 60px;
}
.mb-40 {
  margin-bottom: 40px;
}
.w-full {
  width: 100%;
}
.intro-text {
  text-align: center;
  margin-bottom: 40px;
  color: var(--text-light);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}
.promo-box {
  background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
  padding: 40px;
  border-radius: 12px;
  color: white;
  text-align: center;
  margin-bottom: 40px;
}
.promo-box h2 {
  color: white;
  margin-bottom: 16px;
}
.promo-box p {
  margin-bottom: 24px;
  opacity: 0.95;
}
.related-articles {
  margin-top: 50px;
  padding-top: 30px;
  border-top: 1px solid #e2e8f0;
}
.related-articles a {
  color: var(--primary);
}
.hero-resources {
  margin-top: 40px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}
.hero-resources h4 {
  color: white;
  font-size: 1.125rem;
  margin-bottom: 20px;
}
.hero-resources a {
  display: block;
  color: rgba(255,255,255,0.7);
  margin-bottom: 12px;
  text-decoration: none;
}
.hero-resources a:hover {
  color: white;
}
.faq-answer a {
  color: var(--primary);
}
.post-body a {
  color: var(--primary);
}
.footer-section p {
  color: rgba(255,255,255,0.7);
  line-height: 1.6;
}
.bg-icon-1 {
  background: #10b981;
}
.bg-icon-2 {
  background: #f59e0b;
}
.bg-icon-3 {
  background: #ef4444;
}
.text-primary {
  color: var(--primary);
}

/* Responsive */
@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  nav {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 24px;
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all 0.2s;
  }

  nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .hero-stats {
    gap: 30px;
  }

  .stat-number {
    font-size: 2rem;
  }

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

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

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

  .cta-floating {
    bottom: 16px;
    right: 16px;
    padding: 14px 24px;
    font-size: 0.9rem;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 2rem;
  }

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

  .cta-btn {
    padding: 16px 32px;
    font-size: 1rem;
  }

  .container {
    padding: 0 16px;
  }
}

/* Utility classes */
.mt-20 {
  margin-top: 20px;
}

.nav-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--white);
  color: var(--primary);
  padding: 18px 48px;
  border: none;
  border-radius: var(--radius);
  font-size: 1.125rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  box-shadow: var(--shadow-lg);
  white-space: nowrap;
}

.nav-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.15), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  background: #f8fafc;
}