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

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --secondary: #0ea5e9;
  --bg: #f8fafc;
  --surface: #ffffff;
  --text: #0f172a;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --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;
  --radius-sm: 8px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

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

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
header {
  background: var(--surface);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  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 {
  display: flex;
  gap: 32px;
}

.nav a {
  color: var(--text-muted);
  text-decoration: none;
  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: 8px;
}

.mobile-menu-btn svg {
  width: 28px;
  height: 28px;
  color: var(--text);
}

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 73px;
  left: 0;
  right: 0;
  background: var(--surface);
  padding: 20px;
  box-shadow: var(--shadow-lg);
  z-index: 99;
}

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

.mobile-menu a {
  display: block;
  padding: 12px 0;
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  border-bottom: 1px solid var(--border);
}

.mobile-menu a:last-child {
  border-bottom: none;
}

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

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

.hero h1 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 20px;
  line-height: 1.2;
}

.hero p {
  font-size: 1.25rem;
  opacity: 0.9;
  margin-bottom: 40px;
  line-height: 1.6;
}

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

.section-alt {
  padding: 100px 0;
  background: rgba(255,255,255,0.03);
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 16px;
}

.section-subtitle {
  text-align: center;
  color: var(--text-muted);
  font-size: 1.125rem;
  max-width: 600px;
  margin: 0 auto 60px;
}

/* Buttons */
.cta-btn {
  display: inline-block;
  padding: 16px 40px;
  background: var(--primary);
  color: white;
  font-weight: 600;
  font-size: 1.125rem;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s;
  box-shadow: var(--shadow);
}

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

.cta-btn:active {
  transform: translateY(0);
}

.cta-floating {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 1000;
  padding: 18px 36px;
  box-shadow: var(--shadow-lg);
  animation: pulse 2s infinite;
}

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

/* Features */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
  margin-bottom: 60px;
}

.feature-card {
  background: var(--surface);
  padding: 40px 30px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-align: center;
}

.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  color: var(--primary);
}

.feature-icon svg {
  width: 100%;
  height: 100%;
}

.feature-card h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
}

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

/* Steps */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin-top: 60px;
}

.step {
  text-align: center;
}

.step-number {
  width: 60px;
  height: 60px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 auto 20px;
}

.step h3 {
  margin-bottom: 12px;
  font-size: 1.25rem;
}

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

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-bottom: 60px;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.feature-item svg {
  width: 32px;
  height: 32px;
  color: var(--primary);
  flex-shrink: 0;
}

.feature-item span {
  font-weight: 500;
}

/* CTA Large */
.cta-large {
  text-align: center;
  padding: 80px 40px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: white;
  border-radius: var(--radius);
}

.cta-large h2 {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.cta-large p {
  font-size: 1.25rem;
  opacity: 0.9;
  margin-bottom: 40px;
}

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

.cta-large .cta-btn:hover {
  background: #f0f0f0;
}

/* Testimonials */
.testimonials {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-bottom: 60px;
}

.testimonial-card {
  background: var(--surface);
  padding: 30px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.testimonial-text {
  font-style: italic;
  margin-bottom: 20px;
  color: var(--text);
  line-height: 1.7;
}

.testimonial-author {
  font-weight: 600;
  color: var(--text-muted);
  text-align: right;
}

/* Page Header */
.page-header {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: white;
  padding: 80px 0;
  text-align: center;
}

.page-header h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.page-header p {
  font-size: 1.125rem;
  opacity: 0.9;
}

/* Content Section */
.content-section {
  padding: 80px 0;
}

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

.article-content p {
  margin-bottom: 24px;
  line-height: 1.8;
}

.article-content h2 {
  font-size: 1.75rem;
  margin-top: 48px;
  margin-bottom: 20px;
  color: var(--text);
}

.article-content h3 {
  font-size: 1.35rem;
  margin-top: 36px;
  margin-bottom: 16px;
}

.article-content ul {
  margin-bottom: 24px;
  padding-left: 24px;
}

.article-content li {
  margin-bottom: 10px;
  line-height: 1.7;
}

.article-content a {
  color: var(--primary);
  text-decoration: none;
}

.article-content a:hover {
  text-decoration: underline;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 20px;
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

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

/* Blog */
.blog-preview {
  margin-top: 40px;
}

.blog-preview h2 {
  font-size: 2rem;
  margin-bottom: 40px;
  text-align: center;
}

.blog-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-bottom: 40px;
}

.blog-card {
  background: var(--surface);
  padding: 30px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

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

.blog-card h3 {
  margin-bottom: 12px;
}

.blog-card h3 a {
  color: var(--text);
  text-decoration: none;
}

.blog-card h3 a:hover {
  color: var(--primary);
}

.blog-card p {
  color: var(--text-muted);
  margin-bottom: 16px;
}

.read-more {
  color: var(--primary);
  font-weight: 600;
  text-decoration: none;
}

.read-more:hover {
  text-decoration: underline;
}

/* Blog List */
.blog-list {
  max-width: 900px;
  margin: 0 auto;
}

.blog-card-large {
  background: var(--surface);
  padding: 50px 40px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 30px;
}

.blog-card-large h2 {
  font-size: 1.75rem;
  margin-bottom: 16px;
}

.blog-card-large h2 a {
  color: var(--text);
  text-decoration: none;
}

.blog-card-large h2 a:hover {
  color: var(--primary);
}

.blog-card-large p {
  color: var(--text-muted);
  line-height: 1.7;
}



.blog-card h3 {
  margin-bottom: 12px;
}

.blog-card h3 a {
  color: var(--text);
  text-decoration: none;
}

.blog-card h3 a:hover {
  color: var(--primary);
}

.blog-card p {
  color: var(--text-muted);
  margin-bottom: 16px;
}

/* FAQ */
.faq-section {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--surface);
  border-radius: var(--radius);
  margin-bottom: 16px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 24px;
  background: none;
  border: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  transition: background 0.2s;
}

.faq-question:hover {
  background: rgba(37, 99, 235, 0.05);
}

.faq-question svg {
  width: 24px;
  height: 24px;
  color: var(--primary);
  transition: transform 0.3s;
  flex-shrink: 0;
}

.faq-question.active svg {
  transform: rotate(180deg);
}

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

.faq-answer p {
  padding: 0 24px 24px;
  color: var(--text-muted);
  line-height: 1.7;
}

.faq-question.active + .faq-answer {
  max-height: 500px;
}

/* Contact */
.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.contact-info h2 {
  font-size: 1.75rem;
  margin-bottom: 20px;
}

.contact-info p {
  color: var(--text-muted);
  margin-bottom: 40px;
  line-height: 1.7;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-method {
  display: flex;
  align-items: center;
  gap: 16px;
}

.contact-method svg {
  width: 32px;
  height: 32px;
  color: var(--primary);
  flex-shrink: 0;
}

.contact-method h4 {
  margin-bottom: 4px;
}

.contact-method p {
  margin: 0;
  color: var(--text-muted);
}

.contact-form-wrapper {
  background: var(--surface);
  padding: 40px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

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

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.2s;
}

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

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* Footer */
footer {
  background: var(--text);
  color: white;
  padding: 80px 0 30px;
  margin-top: 100px;
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 60px;
  margin-bottom: 60px;
}

.footer-brand p {
  margin-top: 16px;
  color: rgba(255,255,255,0.7);
  max-width: 300px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.footer-column h4 {
  font-size: 1rem;
  margin-bottom: 16px;
  font-weight: 600;
}

.footer-column a {
  display: block;
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  margin-bottom: 10px;
  transition: color 0.2s;
}

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

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.5);
  font-size: 0.9rem;
}

/* Blog Preview Section */
.blog-preview-section {
  padding: 80px 0;
  background: rgba(255,255,255,0.03);
}

/* Related Posts */
.related-posts {
  margin-top: 60px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
}

.related-posts h3 {
  margin-bottom: 20px;
  font-size: 1.25rem;
}

.related-posts ul {
  list-style: none;
  padding: 0;
}

.related-posts li {
  margin-bottom: 12px;
}

.related-posts a {
  color: var(--primary);
  text-decoration: none;
}

.related-posts a:hover {
  text-decoration: underline;
}

/* Utility */
.text-center {
  text-align: center;
}

.mt-60 { margin-top: 60px; }
.mt-40 { margin-top: 40px; }
.mt-20 { margin-top: 20px; }
.mt-15 { margin-top: 15px; }
.mt-24 { margin-top: 24px; }

.mb-60 { margin-bottom: 60px; }
.mb-40 { margin-bottom: 40px; }
.mb-15 { margin-bottom: 15px; }

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

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

  .hero h1 {
    font-size: 2rem;
  }

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

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

  .footer-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .contact-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .cta-floating {
    bottom: 20px;
    right: 20px;
    padding: 14px 28px;
    font-size: 0.9rem;
  }
}