/**
 * Blog Post Shared Styles
 */

/* Table of Contents Sidebar */
.toc-sidebar {
  position: fixed;
  left: 20px;
  top: 100px;
  width: 250px;
  max-height: calc(100vh - 150px);
  overflow-y: auto;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
  z-index: 100;
}

/* Add left margin to container when TOC is visible */
@media (min-width: 1201px) {
  .container {
    margin-left: 320px !important;
  }
}

.toc-sidebar::-webkit-scrollbar {
  width: 6px;
}

.toc-sidebar::-webkit-scrollbar-track {
  background: transparent;
}

.toc-sidebar::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 3px;
}

.toc-sidebar::-webkit-scrollbar-thumb:hover {
  background: var(--accent-color);
}

.toc-title {
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-light);
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--border-color);
}

.toc-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

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

.toc-list a {
  display: block;
  padding: 0.5rem 0.75rem;
  color: var(--text-color);
  text-decoration: none;
  font-size: 0.9rem;
  line-height: 1.4;
  border-radius: 6px;
  transition: all 0.2s ease;
  border-left: 3px solid transparent;
}

.toc-list a:hover {
  background: var(--bg-primary);
  border-left-color: var(--accent-color);
  padding-left: 1rem;
}

.toc-list a.active {
  background: var(--bg-primary);
  border-left-color: var(--primary-color);
  font-weight: 600;
  color: var(--primary-color);
}

/* Hide TOC on smaller screens */
@media (max-width: 1200px) {
  .toc-sidebar {
    display: none;
  }
}

.post-footer-nav {
  margin: 3rem 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: stretch;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.post-footer-nav .nav-btn {
  flex: 1 1 300px;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  text-decoration: none;
  color: var(--text-color);
  transition: all 0.3s ease;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.post-footer-nav .nav-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
  border-color: var(--primary-color);
  background: var(--bg-primary);
}

.post-footer-nav .nav-btn i {
  font-size: 1.25rem;
  color: var(--primary-color);
  flex-shrink: 0;
}

.post-footer-nav .nav-btn-text {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.post-footer-nav .nav-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-light);
  font-weight: 600;
}

.post-footer-nav .nav-title {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-color);
  line-height: 1.3;
}

.post-footer-nav .nav-btn-next {
  justify-content: flex-end;
  text-align: right;
}

.post-footer-nav .nav-btn-next .nav-btn-text {
  align-items: flex-end;
}

.post-footer-nav .nav-btn-placeholder {
  opacity: 0.4;
  pointer-events: none;
  cursor: default;
}

@media (max-width: 768px) {
  .post-footer-nav {
    flex-direction: column;
    gap: 1rem;
  }

  .post-footer-nav .nav-btn,
  .post-footer-nav .nav-btn-placeholder {
    width: 100%;
    max-width: 100%;
    justify-content: flex-start;
    text-align: left;
  }

  .post-footer-nav .nav-btn-next {
    justify-content: flex-start;
  }

  .post-footer-nav .nav-btn-next .nav-btn-text {
    align-items: flex-start;
  }
}