:root {
  --color-white: rgba(255, 255, 255, 1);
  --color-cream-50: rgba(252, 252, 249, 1);
  --color-cream-100: rgba(255, 255, 253, 1);
  --color-gray-200: rgba(245, 245, 245, 1);
  --color-gray-300: rgba(167, 169, 169, 1);
  --color-slate-500: rgba(98, 108, 113, 1);
  --color-slate-900: rgba(19, 52, 59, 1);
  --color-teal-500: rgba(33, 128, 141, 1);
  --color-red-400: rgba(255, 84, 89, 1);
  --color-orange-400: rgba(230, 129, 97, 1);

  --color-background: var(--color-cream-50);
  --color-surface: var(--color-cream-100);
  --color-text: var(--color-slate-900);
  --color-text-secondary: var(--color-slate-500);
  --color-primary: var(--color-teal-500);
  --color-accent: var(--color-red-400);
  --color-accent-secondary: var(--color-orange-400);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  font-size: 18px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-background);
}

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

/* Header */
.header {
  background-color: var(--color-surface);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  flex-wrap: wrap;
  gap: 20px;
}

.site-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
}

.site-title a {
  color: inherit;
  text-decoration: none;
}

.nav-list {
  display: flex;
  gap: 30px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  font-size: 1.1rem;
  color: var(--color-text);
  text-decoration: none;
  padding: 12px 20px;
  border-radius: 8px;
  transition: all 0.3s ease;
  min-height: 44px;
  display: flex;
  align-items: center;
}

.nav-link:hover,
.nav-link.active {
  background-color: var(--color-primary);
  color: var(--color-white);
}

/* Breadcrumb */
.breadcrumb {
  background-color: var(--color-gray-200);
  padding: 15px 0;
}

.breadcrumb-list {
  display: flex;
  gap: 10px;
  list-style: none;
  font-size: 16px;
}

.breadcrumb-list li:not(:last-child)::after {
  content: ">";
  margin-left: 10px;
  color: var(--color-text-secondary);
}

.breadcrumb-list a {
  color: var(--color-primary);
  text-decoration: none;
}

.breadcrumb-list a:hover {
  text-decoration: underline;
}

/* Article styles */
.article-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 40px 20px;
}

.article-header {
  text-align: center;
  margin-bottom: 40px;
  padding-bottom: 30px;
  border-bottom: 2px solid var(--color-gray-200);
}

.article-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 15px;
  line-height: 1.2;
}

.article-meta {
  display: flex;
  justify-content: center;
  gap: 20px;
  color: var(--color-text-secondary);
  font-size: 1rem;
  margin-bottom: 20px;
}

.article-image {
  width: 100%;
  max-width: 600px;
  height: 300px;
  object-fit: cover;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.article-content {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--color-text);
}

.article-content h2,
.article-content h3,
.article-content h4 {
  margin: 30px 0 15px 0;
  color: var(--color-text);
}

.article-content h2 {
  font-size: 1.8rem;
  font-weight: 600;
}

.article-content h3 {
  font-size: 1.5rem;
  font-weight: 600;
}

.article-content p {
  margin-bottom: 20px;
}

.article-content ul,
.article-content ol {
  margin: 20px 0;
  padding-left: 30px;
}

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

.article-content strong {
  font-weight: 600;
  color: var(--color-text);
}

/* Back to home button */
.back-to-home {
  display: inline-block;
  margin: 30px 0;
  padding: 15px 25px;
  background-color: var(--color-primary);
  color: var(--color-white);
  text-decoration: none;
  border-radius: 8px;
  font-size: 1.1rem;
  font-weight: 500;
  transition: all 0.3s ease;
}

.back-to-home:hover {
  background-color: var(--color-teal-700);
  transform: translateY(-2px);
}

/* Newsletter Section */
.newsletter {
  padding: 30px 0;
  background: linear-gradient(135deg, var(--color-primary) 20%, #00796b 80%);
}

.newsletter-content {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.newsletter-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: var(--space-16);
}

.newsletter-text {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-24);
  color: #efeff1;
}

.newsletter-form {
  margin-bottom: var(--space-16);
}

.form-row {
  display: flex;
  gap: var(--space-12);
  align-items: center;
}

.newsletter-input {
  flex: 1;
  font-size: var(--font-size-lg);
  min-height: 44px;
}

.newsletter-btn {
  font-size: var(--font-size-lg);
  min-height: 44px;
  min-width: 120px;
}

.newsletter-disclaimer {
  font-size: var(--font-size-base);
  color: #efeff1;
  margin: 0;
}

/* Footer */
.footer {
  background-color: var(--color-slate-900);
  color: var(--color-white);
  padding: 40px 0;
  margin-top: 60px;
}

.footer-content {
  text-align: center;
}

.footer p {
  margin-bottom: 10px;
}

/* Responsive */
@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
    text-align: center;
  }

  .nav-list {
    flex-direction: column;
    gap: 10px;
  }

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

  .article-meta {
    flex-direction: column;
    gap: 10px;
  }

  .container {
    padding: 0 15px;
  }
}