/**
 * Central custom styles
 * Tech blog (main) and shared UI
 */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/* ==========================================================================
   Tech blog – main page
   ========================================================================== */

.tech-blog-main {
  --bg-page: #f1f5f9;
  --card-bg: #ffffff;
  --accent: #6366f1;
  --accent-hover: #4f46e5;
  --text: #1e293b;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-hover: 0 10px 40px -15px rgba(0, 0, 0, 0.15);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-page);
  color: var(--text);
  min-height: 100vh;
  padding-bottom: 3rem;
}

.tech-blog-main a {
  text-decoration: none;
  color: inherit;
}

/* Topic strip */
.tech-blog-main .topic-strip {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
  padding: 1.25rem 1.5rem;
  margin: 0 -15px 1.5rem -15px;
  border-radius: 0 0 var(--radius) var(--radius);
  box-shadow: var(--shadow);
}

.tech-blog-main .topic-strip .topic-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #94a3b8;
  margin-bottom: 0.75rem;
}

.tech-blog-main .topic-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
}

.tech-blog-main .topic-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: #e2e8f0;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  transition: background 0.2s, transform 0.15s;
}

.tech-blog-main .topic-pill:hover {
  background: rgba(255, 255, 255, 0.16);
  color: #fff;
  transform: translateY(-1px);
}

/* Topic colors for known tech */
.tech-blog-main .topic-pill[data-topic="flutter"]:hover {
  background: #02569b;
  border-color: #02569b;
}

.tech-blog-main .topic-pill[data-topic="laravel"]:hover {
  background: #ff2d20;
  border-color: #ff2d20;
}

.tech-blog-main .topic-pill[data-topic="javascript"]:hover {
  background: #3b82f6;
  color: #fff;
  border-color: #3b82f6;
}

.tech-blog-main .topic-pill[data-topic="css"]:hover {
  background: #264de4;
  border-color: #264de4;
}

.tech-blog-main .topic-pill[data-topic="php"]:hover {
  background: #777bb4;
  border-color: #777bb4;
}

.tech-blog-main .topic-pill[data-topic="sql"]:hover {
  background: #336791;
  border-color: #336791;
}

.tech-blog-main .topic-pill[data-topic="webserver"]:hover {
  background: #009639;
  border-color: #009639;
}

.tech-blog-main .topic-pill[data-topic="vuejs"]:hover {
  background: #42b883;
  border-color: #42b883;
}

/* Post grid */
.tech-blog-main .posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.tech-blog-main .post-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
  overflow: hidden;
  transition: box-shadow 0.25s, transform 0.2s, border-color 0.2s;
  display: flex;
  flex-direction: column;
}

.tech-blog-main .post-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
  border-color: rgba(99, 102, 241, 0.35);
}

.tech-blog-main .post-card-link {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 1.25rem 1.25rem 0;
}

.tech-blog-main .post-card .card-accent {
  height: 4px;
  background: linear-gradient(90deg, var(--accent), #a78bfa);
  margin-bottom: 1rem;
}

.tech-blog-main .post-card .card-title {
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--text);
  margin-bottom: 0.5rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

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

.tech-blog-main .post-card .card-excerpt {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.55;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 0.75rem;
}

.tech-blog-main .post-card .card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 1rem;
}

.tech-blog-main .card-tag {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  background: #e0e7ff;
  color: #4338ca;
}

.tech-blog-main .post-card .card-meta {
  padding: 0.75rem 1.25rem;
  background: #f8fafc;
  border-top: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--text-muted);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1rem;
}

.tech-blog-main .card-meta span {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.tech-blog-main .post-card .card-actions {
  border-top: none;
  background: #f1f5f9;
  gap: 0.5rem;
}

.tech-blog-main .post-card .card-actions .btn {
  margin: 0;
}

.tech-blog-main .empty-state {
  text-align: center;
  padding: 3rem 1.5rem;
  color: var(--text-muted);
  font-size: 1rem;
}

.tech-blog-main .pagination-wrap {
  display: flex;
  justify-content: center;
  margin-top: 1.5rem;
}

.tech-blog-main .pagination-wrap nav {
  display: flex;
  gap: 0.25rem;
}

/* ==========================================================================
   Main page – three-column layout
   ========================================================================== */

.tech-blog-main .main-three-cols {
  display: grid;
  grid-template-columns: 260px 1fr 260px;
  gap: 1.5rem;
  align-items: start;
}

.tech-blog-main .main-three-cols.main-no-left {
  grid-template-columns: 1fr 260px;
}

.tech-blog-main .main-three-cols.main-no-right {
  grid-template-columns: 260px 1fr;
}

.tech-blog-main .main-three-cols.main-no-left.main-no-right {
  grid-template-columns: 1fr;
}

@media (max-width: 992px) {
  .tech-blog-main .main-three-cols {
    grid-template-columns: 1fr;
  }
  .tech-blog-main .main-three-cols.main-no-left,
  .tech-blog-main .main-three-cols.main-no-right {
    grid-template-columns: 1fr;
  }
}

.tech-blog-main .main-col {
  min-width: 0;
}

.tech-blog-main .main-sidebar-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 1.25rem;
  position: sticky;
  top: 1rem;
}

.tech-blog-main .main-sidebar-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text);
  margin: 0 0 1rem 0;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--border);
}

.tech-blog-main .main-sidebar-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.tech-blog-main .main-sidebar-list li {
  margin-bottom: 0.5rem;
}

.tech-blog-main .main-sidebar-list li:last-child {
  margin-bottom: 0;
}

.tech-blog-main .main-sidebar-link {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.5rem 0;
  border-radius: var(--radius-sm);
  color: var(--text);
  transition: background 0.15s, color 0.15s;
}

.tech-blog-main .main-sidebar-link:hover {
  background: #f1f5f9;
  color: var(--accent);
}

.tech-blog-main .main-sidebar-link-title {
  font-size: 0.8125rem;
  font-weight: 500;
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.tech-blog-main .main-sidebar-meta {
  font-size: 0.7rem;
  color: var(--text-muted);
}

/* Form / post create & edit */
.tech-blog-main .form-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.tech-blog-main .form-card .card-accent {
  height: 4px;
  background: linear-gradient(90deg, var(--accent), #a78bfa);
  margin: -1.5rem -1.5rem 1.25rem -1.5rem;
  border-radius: var(--radius) var(--radius) 0 0;
}

.tech-blog-main .form-card .form-label,
.tech-blog-main .form-card label {
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.35rem;
}

.tech-blog-main .form-card .form-control {
  border-radius: var(--radius-sm);
  border-color: var(--border);
}

.tech-blog-main .form-card .form-control:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.tech-blog-main .form-card .form-text {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* Post show (admin view) */
.tech-blog-main .post-show-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.tech-blog-main .post-show-card .card-accent {
  height: 4px;
  background: linear-gradient(90deg, var(--accent), #a78bfa);
  margin: -1.5rem -1.5rem 1.25rem -1.5rem;
  border-radius: var(--radius) var(--radius) 0 0;
}

.tech-blog-main .post-show-card .post-body {
  color: var(--text);
  line-height: 1.6;
  white-space: pre-wrap;
}