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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-weight: 400;
  line-height: 1.5;
  color: #212529;
  background-color: #F8F9FA;
}

/* Article Page Layout */
.article-page {
  min-height: 100vh;
  padding: 6rem 1rem 3rem;
  max-width: 1200px;
  margin: 0 auto;
}

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

/* Article Content */
.article-content {
  background-color: #FFFFFF;
  border-radius: 0.5rem;
  box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
  overflow: hidden;
}

/* Article Header */
.article-header {
  padding: 2rem 2rem 1.5rem;
  background-color: #FFFFFF;
  border-bottom: 1px solid #E9ECEF;
}

.article-title {
  font-size: 2rem;
  font-weight: 700;
  color: #212529;
  line-height: 1.3;
  margin-bottom: 1rem;
  word-wrap: break-word;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: #6C757D;
  font-size: 0.8125rem;
  font-weight: 400;
}

.meta-icon {
  color: #6C757D;
  flex-shrink: 0;
}

/* Article Image */
.article-image-wrapper {
  width: 100%;
  max-height: 400px;
  overflow: hidden;
  background-color: #F8F9FA;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.article-image {
  width: 100%;
  height: auto;
  max-height: 400px;
  object-fit: contain;
  object-position: center;
  display: block;
}

/* Article Body */
.article-body {
  padding: 1.5rem 2rem 2.5rem;
  line-height: 1.7;
}

.article-body p {
  margin-bottom: 1.5rem;
  color: #495057;
  font-size: 1.125rem;
  text-align: justify;
}

.article-body p:last-child {
  margin-bottom: 0;
}

.article-body h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: #212529;
  margin: 3rem 0 1.5rem 0;
  padding-bottom: 0.75rem;
  border-bottom: 3px solid #5CC5C8;
}

.article-body h2:first-child {
  margin-top: 0;
}

.article-body h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: #4A90A4;
  margin: 2.5rem 0 1.25rem 0;
}

.article-body h4 {
  font-size: 1.125rem;
  font-weight: 600;
  color: #495057;
  margin: 2rem 0 1rem 0;
}

.article-body strong {
  font-weight: 700;
  color: #212529;
}

.article-body em {
  font-style: italic;
  color: #4A90A4;
}

.article-body ul,
.article-body ol {
  margin: 1.5rem 0;
  padding-left: 2.5rem;
}

.article-body li {
  margin-bottom: 1rem;
  color: #495057;
  font-size: 1.125rem;
}

.article-body li::marker {
  color: #5CC5C8;
  font-weight: 700;
}

.article-body a {
  color: #5CC5C8;
  text-decoration: none;
  font-weight: 500;
  border-bottom: 2px solid transparent;
  transition: border-color 0.15s ease-in-out;
}

.article-body a:hover {
  border-bottom-color: #5CC5C8;
}

.article-body blockquote {
  margin: 2rem 0;
  padding: 1.5rem 2rem;
  border-left: 4px solid #5CC5C8;
  background-color: #F8F9FA;
  border-radius: 0.5rem;
  font-style: italic;
  color: #495057;
}

.article-body img {
  max-width: 100%;
  height: auto;
  border-radius: 0.5rem;
  margin: 2rem 0;
  box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.08);
}

/* Article Footer */
.article-footer {
  margin-top: 2.5rem;
  text-align: center;
}

.btn-back {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 2rem;
  background-color: #5CC5C8;
  color: #FFFFFF;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  border-radius: 0.75rem;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  transition: all 0.3s ease-in-out;
}

.btn-back:hover {
  background-color: #52B3B6;
  transform: translateY(-2px);
  box-shadow: 0 10px 20px -3px rgba(0, 0, 0, 0.1);
}

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

.btn-back svg {
  flex-shrink: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
  .article-page {
    padding: 5rem 0.75rem 2rem;
  }
  
  .article-image-wrapper {
    height: 200px;
    margin-bottom: 1rem;
  }
  
  .article-header {
    padding: 1.5rem 1.25rem 1.25rem;
  }
  
  .article-title {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
  }
  
  .article-meta {
    font-size: 0.75rem;
  }
  
  .article-body {
    padding: 1.25rem 1.25rem 2rem;
  }
  
  .article-body p,
  .article-body li {
    font-size: 1rem;
    text-align: left;
  }
  
  .article-body h2 {
    font-size: 1.25rem;
    margin: 2rem 0 1rem 0;
  }
  
  .article-body h3 {
    font-size: 1.125rem;
    margin: 1.5rem 0 0.75rem 0;
  }
  
  .article-body ul,
  .article-body ol {
    padding-left: 1.5rem;
  }
  
  .article-footer {
    margin-top: 2rem;
  }
  
  .btn-back {
    padding: 0.75rem 1.5rem;
    font-size: 0.875rem;
  }
}

@media (max-width: 480px) {
  .article-page {
    padding: 4.5rem 0.5rem 1.5rem;
  }
  
  .article-image-wrapper {
    height: 180px;
  }
  
  .article-title {
    font-size: 1.25rem;
  }
  
  .article-meta {
    font-size: 0.7rem;
  }
  
  .article-body h2 {
    font-size: 1.125rem;
  }
  
  .article-body h3 {
    font-size: 1rem;
  }
}

/* Print Styles */
@media print {
  .article-page {
    padding: 0;
  }
  
  .article-footer {
    display: none;
  }
  
  .article-image-wrapper {
    box-shadow: none;
    page-break-inside: avoid;
  }
  
  .article-content {
    box-shadow: none;
  }
  
  .article-body {
    color: #000;
  }
}