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

:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --secondary: #8b5cf6;
  --accent: #ec4899;
  --dark: #0f172a;
  --light: #f8fafc;
  --gray: #64748b;
  --gray-light: #e2e8f0;
  --gradient: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  --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;
  line-height: 1.6;
  color: var(--dark);
  background: var(--light);
  min-height: 100vh;
  overflow-x: hidden;
}

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

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

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

/* 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;
  padding: 16px 0;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 24px;
  font-weight: 700;
  color: var(--dark);
  text-decoration: none;
}

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

nav ul {
  display: flex;
  list-style: none;
  gap: 32px;
  align-items: center;
}

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

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

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.mobile-menu-btn img {
  width: 28px;
  height: 28px;
}

/* Hero Section */
.hero {
  background: var(--gradient);
  color: white;
  padding: 100px 0 120px;
  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: 0.5;
}

.hero-content {
  position: relative;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 20px;
}

.hero h1 {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.hero p {
  font-size: 20px;
  opacity: 0.95;
  margin-bottom: 40px;
  line-height: 1.7;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 36px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 18px;
  text-decoration: none;
  transition: all 0.2s;
  border: none;
  cursor: pointer;
}

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

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

.btn-secondary {
  background: rgba(255, 255, 255, 0.15);
  color: white;
  border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.25);
  border-color: rgba(255, 255, 255, 0.5);
}

/* CTA Button */
.cta-btn {
  background: var(--gradient);
  color: white;
  padding: 14px 28px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 16px;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: var(--shadow);
}

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

.cta-floating {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 1000;
  padding: 16px 32px;
  font-size: 18px;
  border-radius: 50px;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.4); }
  50% { box-shadow: 0 0 0 10px rgba(99, 102, 241, 0); }
}

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

.section-title {
  font-size: 42px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 16px;
  color: var(--dark);
}

.section-subtitle {
  font-size: 18px;
  color: var(--gray);
  text-align: center;
  max-width: 600px;
  margin: 0 auto 60px;
}

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

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 32px;
}

.feature-card {
  background: var(--light);
  padding: 32px;
  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: 56px;
  height: 56px;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 22px;
  margin-bottom: 12px;
  color: var(--dark);
}

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

/* Stats */
.stats {
  background: var(--gradient);
  color: white;
  padding: 60px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  text-align: center;
}

.stat-number {
  font-size: 48px;
  font-weight: 800;
  display: block;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 16px;
  opacity: 0.9;
}

/* How It Works */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin-top: 60px;
}

.step {
  text-align: center;
}

.step-number {
  width: 64px;
  height: 64px;
  background: var(--gradient);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  font-weight: 700;
  margin: 0 auto 24px;
}

.step h3 {
  font-size: 22px;
  margin-bottom: 12px;
}

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

/* Blog Grid */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 32px;
  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(-4px);
}

.blog-image {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.blog-content {
  padding: 24px;
}

.blog-tag {
  display: inline-block;
  background: var(--primary);
  color: white;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 12px;
}

.blog-card h3 {
  font-size: 22px;
  margin-bottom: 12px;
  line-height: 1.3;
}

.blog-card p {
  color: var(--gray);
  margin-bottom: 20px;
  line-height: 1.7;
}

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

/* Page Header */
.page-header {
  background: var(--gradient);
  color: white;
  padding: 80px 0 60px;
  text-align: center;
}

.page-header h1 {
  font-size: 48px;
  font-weight: 800;
  margin-bottom: 16px;
}

.page-header p {
  font-size: 18px;
  opacity: 0.95;
  max-width: 600px;
  margin: 0 auto;
}

/* Content Sections */
.content-section {
  padding: 60px 0;
}

.content-section h2 {
  font-size: 32px;
  margin-bottom: 24px;
  color: var(--dark);
}

.content-section p {
  margin-bottom: 20px;
  line-height: 1.8;
  color: var(--gray);
}

.content-section ul {
  margin: 24px 0;
  padding-left: 24px;
}

.content-section li {
  margin-bottom: 12px;
  line-height: 1.7;
  color: var(--gray);
}

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

.faq-question {
  width: 100%;
  padding: 24px;
  background: white;
  border: none;
  text-align: left;
  font-size: 18px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.2s;
}

.faq-question:hover {
  background: var(--light);
}

.faq-question::after {
  content: '+';
  font-size: 24px;
  transition: transform 0.2s;
}

.faq-item.active .faq-question::after {
  transform: rotate(45deg);
}

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

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

/* 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(--dark);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  border: 2px solid var(--gray-light);
  border-radius: var(--radius-sm);
  font-size: 16px;
  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;
}

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

.footer-content {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  margin-bottom: 40px;
}

.footer-section h4 {
  font-size: 18px;
  margin-bottom: 20px;
}

.footer-section ul {
  list-style: none;
}

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

.footer-section a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-section a:hover {
  color: 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: 14px;
}

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

.article-content h2 {
  font-size: 32px;
  margin: 40px 0 20px;
  color: var(--dark);
}

.article-content h3 {
  font-size: 24px;
  margin: 32px 0 16px;
  color: var(--dark);
}

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

.article-content ul,
.article-content ol {
  margin: 24px 0;
  padding-left: 24px;
}

.article-content li {
  margin-bottom: 12px;
  line-height: 1.7;
  color: var(--gray);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 32px;
  text-decoration: none;
}

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

.article-meta {
  color: var(--gray);
  font-size: 14px;
  margin-bottom: 32px;
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 36px;
  }

  .hero p {
    font-size: 18px;
  }

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

  nav ul {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    padding: 20px;
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s;
  }

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

  .steps,
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .footer-content {
    grid-template-columns: repeat(2, 1fr);
  }

  .section-title {
    font-size: 32px;
  }
}

@media (max-width: 480px) {
  .footer-content {
    grid-template-columns: 1fr;
  }
}