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

:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --secondary: #8b5cf6;
  --accent: #ec4899;
  --bg-light: #f9fafb;
  --bg-dark: #111827;
  --text-dark: #1f2937;
  --text-light: #f3f4f6;
  --text-muted: #6b7280;
  --border: #e5e7eb;
  --success: #10b981;
  --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);
  --radius: 12px;
  --radius-sm: 8px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background: var(--bg-light);
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button {
  cursor: pointer;
  border: none;
  font-family: inherit;
}

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

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

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
}

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

.nav {
  display: flex;
  gap: 32px;
}

.nav a {
  font-weight: 500;
  color: var(--text-dark);
  transition: color 0.2s;
}

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

.mobile-menu-btn {
  display: none;
  background: none;
  padding: 8px;
  color: var(--text-dark);
}

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

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  margin-bottom: 24px;
  line-height: 1.2;
}

.hero p {
  font-size: 1.25rem;
  opacity: 0.9;
  max-width: 700px;
  margin: 0 auto 40px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius);
  transition: all 0.2s;
  text-transform: none;
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.2);
  color: white;
  border: 2px solid rgba(255, 255, 255, 0.5);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.3);
}

/* CTA Button */
.cta-btn {
  background: linear-gradient(135deg, var(--accent) 0%, #f97316 100%);
  color: white;
  font-weight: 700;
  padding: 16px 40px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  transition: all 0.2s;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 1rem;
}

.cta-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 25px -5px rgba(236, 72, 153, 0.4), 0 10px 10px -5px rgba(249, 115, 22, 0.2);
}

.cta-floating {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 999;
  padding: 18px 36px;
  animation: pulse 2s infinite;
}

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

/* Sections */
.section {
  padding: 80px 0;
}

.section-dark {
  background: var(--bg-dark);
  color: var(--text-light);
}

.section-light {
  background: white;
}

.section-title {
  font-size: 2.5rem;
  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;
}

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

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

.feature-card:hover {
  transform: translateY(-5px);
}

.feature-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: white;
}

.feature-icon svg {
  width: 30px;
  height: 30px;
}

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

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

/* Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  margin-top: 60px;
}

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

.stat-number {
  font-size: 3rem;
  font-weight: 800;
  color: var(--primary);
  display: block;
}

.stat-label {
  color: var(--text-muted);
  font-size: 1rem;
}

/* Blog Grid */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
  margin-top: 60px;
}

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

.blog-card:hover {
  transform: translateY(-5px);
}

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

.blog-card h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
  line-height: 1.4;
}

.blog-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 20px;
  line-height: 1.6;
}

.blog-card .read-more {
  color: var(--primary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

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

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

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

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

.faq-icon {
  transition: transform 0.3s;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

/* Contact Form */
.contact-form {
  max-width: 600px;
  margin: 0 auto;
  background: white;
  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: 600;
  color: var(--text-dark);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  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 {
  resize: vertical;
  min-height: 120px;
}

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

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 60px;
  margin-bottom: 40px;
}

.footer-brand p {
  color: var(--text-muted);
  margin-top: 16px;
  max-width: 300px;
}

.footer h4 {
  font-size: 1rem;
  margin-bottom: 20px;
  color: white;
}

.footer-column {
  display: flex;
  flex-direction: column;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  color: var(--text-muted);
  transition: color 0.2s;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 30px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* Blog Article */
.article-content {
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.8;
}

.article-content h2 {
  font-size: 2rem;
  margin: 40px 0 20px;
}

.article-content h3 {
  font-size: 1.5rem;
  margin: 30px 0 16px;
}

.article-content p {
  margin-bottom: 20px;
  color: var(--text-dark);
  line-height: 1.8;
}

.article-content ul,
.article-content ol {
  margin-bottom: 20px;
  padding-left: 24px;
}

.article-content li {
  margin-bottom: 8px;
}

.article-meta {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 30px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 30px;
}

.mt-20 {
  margin-top: 20px;
}

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 70px;
  left: 0;
  right: 0;
  background: white;
  padding: 20px;
  box-shadow: var(--shadow-lg);
  flex-direction: column;
  gap: 16px;
}

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

.mobile-menu a {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-weight: 500;
}

.mobile-menu a:hover {
  background: var(--bg-light);
}

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

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

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

  .hero p {
    font-size: 1.125rem;
  }

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

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
  }

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

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

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

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

/* Utility Classes */
.mt-0 { margin-top: 0; }
.mt-12 { margin-top: 12px; }
.mt-16 { margin-top: 16px; }
.mt-20 { margin-top: 20px; }
.mt-30 { margin-top: 30px; }
.mt-40 { margin-top: 40px; }
.mt-60 { margin-top: 60px; }

.mb-0 { margin-bottom: 0; }
.mb-12 { margin-bottom: 12px; }
.mb-20 { margin-bottom: 20px; }
.mb-30 { margin-bottom: 30px; }

.ml-0 { margin-left: 0; }
.ml-16 { margin-left: 16px; }

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

.my-20 { margin-top: 20px; margin-bottom: 20px; }

.py-60 { padding-top: 60px; padding-bottom: 60px; }
.py-40 { padding-top: 40px; padding-bottom: 40px; }
.p-40 { padding: 40px; }

.text-center { text-align: center; }
.text-left { text-align: left; }

.bg-white { background: white; }
.bg-light { background: var(--bg-light); }
.bg-primary { background: var(--primary); }
.bg-gradient {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
}

.text-white { color: white; }
.text-primary { color: var(--primary); }
.text-muted { color: var(--text-muted); }
.text-opacity-90 { color: rgba(255,255,255,0.9); }

.fs-24 { font-size: 24px; }
.fs-xl { font-size: 1.75rem; }
.fw-700 { font-weight: 700; }

.w-100 { width: 100%; }

.border-top { border-top: 1px solid var(--border); }

.list-unstyled {
  list-style: none;
  padding: 0;
}

.max-width-700 { max-width: 700px; }
.max-width-600 { max-width: 600px; }

.display-grid { display: grid; }

.pl-20 { padding-left: 20px; }

.link-primary {
  color: var(--primary);
  font-weight: 600;
  transition: color 0.2s;
}

.link-primary:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

.grid-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

.grid-features {
  display: grid;
  gap: 30px;
  margin-top: 40px;
}

.grid-related {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

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

/* Additional utility classes */
.mt-30 { margin-top: 30px; }
.mt-40 { margin-top: 40px; }
.mt-60 { margin-top: 60px; }
.mt-16 { margin-top: 16px; }
.mt-12 { margin-top: 12px; }

.mb-12 { margin-bottom: 12px; }

.ml-16 { margin-left: 16px; }

.pt-40 { padding-top: 40px; }

.fw-600 { font-weight: 600; }

.rounded {
  border-radius: var(--radius);
}

.grid-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  margin-top: 40px;
}

.grid-related {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}