/* Blog Post Page Styles */

.blog-post-page {
  padding-top: 100px;
  padding-bottom: 4rem;
  min-height: 100vh;
}

/* Back Link */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--muted-foreground);
  font-size: 0.875rem;
  transition: color 0.3s;
  margin-bottom: 2rem;
}

.back-link:hover {
  color: var(--primary);
}

/* Blog Post Header */
.blog-post-header {
  margin-bottom: 3rem;
  text-align: center;
}

.blog-post-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  line-height: 1.3;
}

@media (min-width: 768px) {
  .blog-post-title {
    font-size: 2.75rem;
  }
}

.blog-post-meta {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
  color: var(--muted-foreground);
  font-size: 0.875rem;
}

.blog-post-meta .blog-date,
.blog-post-meta .blog-read-time {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.blog-post-tags {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* Difficulty Rankings */
.difficulty-rankings {
  background: rgba(20, 24, 30, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 3rem;
  text-align: center;
}

.difficulty-rankings h3 {
  font-size: 1rem;
  color: var(--muted-foreground);
  margin-bottom: 1rem;
  font-weight: 500;
}

.ranking-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.difficulty-indicator {
  color: var(--muted-foreground);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  opacity: 0.6;
}

/* Course Code Styles */
.course-code {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 1rem;
  font-weight: 600;
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  letter-spacing: 0.02em;
}

.course-code.ece {
  background: linear-gradient(135deg, rgba(147, 51, 234, 0.2), rgba(147, 51, 234, 0.1));
  border: 1px solid rgba(147, 51, 234, 0.4);
  color: hsl(270, 80%, 70%);
  text-shadow: 0 0 10px rgba(147, 51, 234, 0.3);
}

.course-code.math {
  background: linear-gradient(135deg, rgba(0, 179, 179, 0.2), rgba(0, 179, 179, 0.1));
  border: 1px solid rgba(0, 179, 179, 0.4);
  color: var(--primary);
  text-shadow: 0 0 10px rgba(0, 179, 179, 0.3);
}

.course-code.comm {
  background: linear-gradient(135deg, rgba(255, 165, 0, 0.2), rgba(255, 165, 0, 0.1));
  border: 1px solid rgba(255, 165, 0, 0.4);
  color: hsl(38, 100%, 60%);
  text-shadow: 0 0 10px rgba(255, 165, 0, 0.3);
}

/* Blog Post Content */
.blog-post-content {
  max-width: 750px;
  margin: 0 auto;
}

.content-section {
  margin-bottom: 3rem;
}

.content-section h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: var(--foreground);
  position: relative;
  padding-left: 1rem;
}

.content-section h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.25rem;
  bottom: 0.25rem;
  width: 3px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
  border-radius: 3px;
}

.content-section p {
  color: var(--muted-foreground);
  line-height: 1.9;
  margin-bottom: 1.25rem;
  font-size: 1.0625rem;
}

/* Course Review Cards */
.course-review {
  background: rgba(20, 24, 30, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  padding: 1.75rem;
  margin-bottom: 1.5rem;
  transition: all 0.3s;
}

.course-review:hover {
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-2px);
}

.course-review.featured {
  border-color: rgba(147, 51, 234, 0.3);
  background: linear-gradient(135deg, rgba(147, 51, 234, 0.08), rgba(20, 24, 30, 0.8));
}

.course-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.course-name {
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--foreground);
}

.difficulty-badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  background: linear-gradient(135deg, rgba(255, 50, 50, 0.2), rgba(255, 100, 50, 0.2));
  border: 1px solid rgba(255, 80, 50, 0.5);
  color: hsl(15, 100%, 65%);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.course-review p {
  color: var(--muted-foreground);
  line-height: 1.8;
  margin-bottom: 1rem;
}

.course-review p:last-child {
  margin-bottom: 0;
}

.course-review .tip {
  background: rgba(0, 179, 179, 0.1);
  border-left: 3px solid var(--primary);
  padding: 1rem;
  border-radius: 0 var(--radius) var(--radius) 0;
  margin-top: 1rem;
}

.course-review .tip strong {
  color: var(--primary);
}

/* Tips Section */
.tips-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

@media (min-width: 768px) {
  .tips-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.tip-card {
  background: rgba(20, 24, 30, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: all 0.3s;
}

.tip-card:hover {
  border-color: rgba(0, 179, 179, 0.3);
  transform: translateY(-4px);
}

.tip-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 179, 179, 0.1);
  border: 1px solid rgba(0, 179, 179, 0.2);
  border-radius: 12px;
  color: var(--primary);
  margin-bottom: 1rem;
}

.tip-card h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--foreground);
}

.tip-card p {
  font-size: 0.9375rem;
  color: var(--muted-foreground);
  line-height: 1.7;
}

/* Conclusion */
.conclusion .highlight-box {
  background: linear-gradient(135deg, rgba(147, 51, 234, 0.1), rgba(0, 179, 179, 0.1));
  border: 1px solid rgba(147, 51, 234, 0.2);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-top: 1.5rem;
}

.conclusion .highlight-box strong {
  color: var(--accent);
}

/* ML Blog Post Styles */
.ml-concept-card {
  background: rgba(20, 24, 30, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin: 1.5rem 0;
}

.ml-concept-card.highlight {
  border-color: rgba(0, 179, 179, 0.3);
  background: linear-gradient(135deg, rgba(0, 179, 179, 0.08), rgba(20, 24, 30, 0.8));
}

.ml-concept-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 1rem;
}

.ml-concept-card ul {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0 0;
}

.ml-concept-card ul li {
  padding: 0.5rem 0;
  padding-left: 1.5rem;
  position: relative;
  color: var(--muted-foreground);
}

.ml-concept-card ul li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--primary);
}

.layer-breakdown {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin: 1.5rem 0;
}

.layer-item {
  background: rgba(20, 24, 30, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  padding: 1.25rem;
  position: relative;
  padding-left: 1.5rem;
  border-left: 3px solid var(--primary);
}

.layer-label {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.5rem;
  background: rgba(0, 179, 179, 0.2);
  border-radius: 4px;
  color: var(--primary);
  margin-bottom: 0.5rem;
}

.layer-name {
  display: block;
  font-size: 1rem;
  font-weight: 600;
  color: var(--foreground);
  margin-bottom: 0.5rem;
}

.layer-item p {
  color: var(--muted-foreground);
  font-size: 0.9375rem;
  line-height: 1.7;
  margin: 0;
}

.math-concept {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin: 1.5rem 0;
}

@media (min-width: 768px) {
  .math-concept {
    grid-template-columns: repeat(3, 1fr);
  }
}

.math-item {
  background: rgba(20, 24, 30, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.math-item h4 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.math-item p {
  color: var(--muted-foreground);
  font-size: 0.875rem;
  line-height: 1.7;
  margin: 0;
}

.inline-link {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color 0.2s;
}

.inline-link:hover {
  color: var(--accent);
}

.resource-list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0;
}

.resource-list li {
  padding: 0.75rem 0;
  padding-left: 1.5rem;
  position: relative;
  color: var(--muted-foreground);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.resource-list li:last-child {
  border-bottom: none;
}

.resource-list li::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: var(--primary);
}

.resource-list a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.resource-list a:hover {
  color: var(--accent);
}

/* Blog Post Footer */
.blog-post-footer {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
}

/* Responsive adjustments */
@media (max-width: 640px) {
  .blog-post-page {
    padding-top: 80px;
  }

  .blog-post-title {
    font-size: 1.75rem;
  }

  .ranking-bar {
    gap: 0.35rem;
  }

  .course-code {
    font-size: 0.8rem;
    padding: 0.25rem 0.5rem;
  }

  .difficulty-indicator {
    font-size: 0.65rem;
  }

  .course-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .course-review {
    padding: 1.25rem;
  }
}