/* blog.css — Blog, posts e sidebar */

/* === FILTROS === */
.blog-filters {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: none;
  -ms-overflow-style: none;
  margin-bottom: clamp(32px, 5vw, 56px);
}

.blog-filters::-webkit-scrollbar { display: none; }

.filter-btn {
  flex-shrink: 0;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.05em;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  color: var(--text-2);
  background: transparent;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.filter-btn:hover {
  color: var(--text-1);
  border-color: var(--border-hover);
  background: var(--bg-surface);
}

.filter-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* === GRID DE POSTS === */
.blog-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap-md);
}

.blog-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  display: flex;
  flex-direction: column;
  cursor: pointer;
}

.blog-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-hover);
}

.blog-card:hover .blog-card-title { color: var(--accent); }

/* Área de imagem simulada */
.blog-card-image {
  height: 180px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.blog-card-image .post-icon {
  font-size: 3rem;
  opacity: 0.8;
  position: relative;
  z-index: 1;
  color: rgba(255,255,255,0.9);
  text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.post-bg-1  { background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%); }
.post-bg-2  { background: linear-gradient(135deg, #0f3460 0%, #533483 100%); }
.post-bg-3  { background: linear-gradient(135deg, #1b1b2f 0%, #2e0249 100%); }
.post-bg-4  { background: linear-gradient(135deg, #2c003e 0%, #c0392b 100%); }
.post-bg-5  { background: linear-gradient(135deg, #0d0d0d 0%, #1a1a1a 100%); }
.post-bg-6  { background: linear-gradient(135deg, #0a3d0a 0%, #1a5c1a 100%); }
.post-bg-7  { background: linear-gradient(135deg, #1a0a00 0%, #4a1000 100%); }
.post-bg-8  { background: linear-gradient(135deg, #00264d 0%, #004080 100%); }
.post-bg-9  { background: linear-gradient(135deg, #1a1a00 0%, #333300 100%); }

.blog-card-body {
  padding: clamp(16px, 2.5vw, 24px);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.blog-card-category {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}

.blog-card-title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--text-1);
  line-height: 1.35;
  margin-bottom: 10px;
  transition: color var(--transition);
}

.blog-card-excerpt {
  font-size: var(--text-sm);
  color: var(--text-2);
  line-height: 1.6;
  flex: 1;
  margin-bottom: 16px;
}

.blog-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: var(--text-xs);
  color: var(--text-3);
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

.blog-card-meta-left { display: flex; align-items: center; gap: 8px; }

.blog-card-date {}
.blog-card-read {
  display: flex;
  align-items: center;
  gap: 4px;
}

.blog-card-link {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 4px;
  text-decoration: none;
  transition: gap var(--transition);
}

.blog-card-link:hover { gap: 6px; }

/* === PÁGINA DO POST === */
.post-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap-lg);
  padding-top: calc(var(--navbar-height) + 32px);
  padding-bottom: var(--section-pad);
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--text-xs);
  color: var(--text-3);
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.breadcrumb a { color: var(--text-3); text-decoration: none; transition: color var(--transition); }
.breadcrumb a:hover { color: var(--text-1); }
.breadcrumb span { color: var(--text-4); }

/* Post Header */
.post-header { margin-bottom: 32px; }

.post-category {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}

.post-title {
  font-size: var(--text-4xl);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--text-1);
  margin-bottom: 16px;
}

.post-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  font-size: var(--text-xs);
  color: var(--text-3);
  margin-bottom: 28px;
}

.post-meta-item { display: flex; align-items: center; gap: 6px; }

/* Hero image do post */
.post-hero-image {
  height: clamp(200px, 30vw, 360px);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 40px;
  overflow: hidden;
  position: relative;
}

.post-hero-image .post-icon-large {
  font-size: 5rem;
  opacity: 0.7;
  color: rgba(255,255,255,0.9);
}

/* Corpo do artigo */
.post-body {
  font-size: var(--text-base);
  color: var(--text-2);
  line-height: 1.8;
}

.post-body h2 {
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--text-1);
  margin: 40px 0 16px;
  letter-spacing: -0.02em;
}

.post-body h3 {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--text-1);
  margin: 28px 0 12px;
}

.post-body p { margin-bottom: 20px; }

.post-body ul, .post-body ol {
  margin: 0 0 20px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.post-body ul li { list-style: disc; }
.post-body ol li { list-style: decimal; }

.post-body blockquote {
  border-left: 3px solid var(--accent);
  padding: 16px 20px;
  margin: 28px 0;
  background: var(--bg-surface);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-size: var(--text-lg);
  font-style: italic;
  color: var(--text-1);
}

.post-body a { color: var(--accent); text-decoration: underline; }

/* Barra de progresso de leitura */
.reading-progress {
  position: fixed;
  top: var(--navbar-height);
  left: 0;
  right: 0;
  height: 3px;
  background: transparent;
  z-index: 998;
}

.reading-progress-bar {
  height: 100%;
  background: var(--accent);
  width: 0%;
  transition: width 0.1s linear;
}

/* Sidebar */
.post-sidebar {}

.sidebar-widget {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 20px;
}

.sidebar-widget:last-child { margin-bottom: 0; }

.sidebar-title {
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-1);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.toc-list { display: flex; flex-direction: column; gap: 6px; }

.toc-link {
  font-size: var(--text-sm);
  color: var(--text-2);
  text-decoration: none;
  padding: 5px 10px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  border-left: 2px solid transparent;
  display: block;
}

.toc-link:hover, .toc-link.active {
  color: var(--text-1);
  background: var(--bg-surface-2);
  border-left-color: var(--accent);
}

.toc-link.h3 { padding-left: 20px; font-size: var(--text-xs); }

.related-post {
  display: flex;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  transition: background var(--transition);
}

.related-post:last-child { border-bottom: none; padding-bottom: 0; }
.related-post:hover .related-post-title { color: var(--accent); }

.related-post-img {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
}

.related-post-info {}
.related-post-cat { font-size: var(--text-xs); color: var(--accent); font-weight: 600; }
.related-post-title {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--text-1);
  line-height: 1.4;
  margin-top: 2px;
  transition: color var(--transition);
}

.sidebar-cta-widget {
  background: var(--accent-dim);
  border: 1px solid rgba(192,57,43,0.25);
  border-radius: var(--radius-lg);
  padding: 24px;
  text-align: center;
}

.sidebar-cta-title {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--text-1);
  margin-bottom: 8px;
}

.sidebar-cta-text {
  font-size: var(--text-xs);
  color: var(--text-2);
  margin-bottom: 16px;
  line-height: 1.5;
}

/* Posts relacionados no final */
.related-posts-section { padding-block: var(--section-pad); border-top: 1px solid var(--border); }

/* === DESKTOP === */
@media (min-width: 768px) {
  .blog-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .blog-grid { grid-template-columns: repeat(3, 1fr); }

  .post-layout {
    grid-template-columns: 1fr 320px;
  }

  .post-sidebar {
    position: sticky;
    top: calc(var(--navbar-height) + 20px);
    align-self: start;
    max-height: calc(100vh - var(--navbar-height) - 40px);
    overflow-y: auto;
    scrollbar-width: thin;
  }
}