:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --secondary-color: #f59e0b;
    --accent-color: #10b981;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    --background-primary: #ffffff;
    --background-secondary: #f9fafb;
    --background-accent: #f3f4f6;
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 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);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-secondary: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
    --gradient-accent: linear-gradient(135deg, #10b981 0%, #059669 100%);
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-lg: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}



body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  color: #333;
  line-height: 1.6;
}

main {
  max-width: 800px;
  margin: 40px auto;
  padding: 0 20px;
  margin-bottom: 60px;
}

h1, h2 {
  color: #222;
}

h1 {
  text-align: center;
  margin-bottom: 20px;
}

h2 {
  margin-top: 30px;
  margin-bottom: 10px;
  border-bottom: 1px solid #ddd;
  padding-bottom: 5px;
}

ul, ol {
  margin-left: 20px;
  margin-bottom: 20px;
}

p {
  margin-bottom: 15px;
}

a {
  color: #007bff;
  text-decoration: none;
}

a:hover,
a:focus {
  text-decoration: underline;
}


.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-img {
    width: 32px;
    height: 32px;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
}



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

.footer-content {
  margin-bottom: 2rem;
}

.footer-main {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 4rem;
  margin-bottom: 3rem;
}

.footer-brand .logo-text {
  color: white;
}

.footer-description {
  color: #bbb; /* var(--text-light) */
  margin-top: 1rem;
  line-height: 1.6;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.footer-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: white;
}

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

.footer-list li {
  margin-bottom: 0.5rem;
}

.footer-link {
  color: #bbb; /* var(--text-light) */
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-link:hover {
  color: #007bff; /* var(--primary-color) */
}

.footer-social {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-link {
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  text-decoration: none;
  transition: background-color 0.3s ease, transform 0.3s ease;
}

.social-link:hover {
  background: #007bff; /* var(--primary-color) */
  transform: translateY(-2px);
}

.social-link i {
  font-size: 20px;
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.copyright {
  color: #bbb; /* var(--text-light) */
  font-size: 0.9rem;
  margin: 0;
}