/* ============================================================
   Document Module Styles — Article listing + detail + admin
   ============================================================ */
/* ── Variables ─────────────────────────────────────────────── */
:root {
  --doc-accent: #f59e0b;
  --doc-text: #1e293b;
  --doc-text-muted: #64748b;
  --doc-bg: #f8fafc;
  --doc-card-bg: #ffffff;
  --doc-border: #e2e8f0;
  --doc-radius: 12px;
  --doc-shadow: 0 2px 12px rgba(0, 0, 0, .08);
  --doc-shadow-hover: 0 8px 28px rgba(0, 0, 0, .14);
  --doc-transition: 0.25s ease;
}
/* ── Container ─────────────────────────────────────────────── */
.doc-section {
  padding: 48px 0 64px;
  background: var(--doc-bg);
  min-height: 60vh;
}
.doc-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}
/* ── Section Header ────────────────────────────────────────── */
.doc-header {
  margin-bottom: 36px;
}
.doc-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--doc-text);
  margin: 0 0 20px;
  line-height: 1.2;
}
/* ── Article Grid ──────────────────────────────────────────── */
.doc-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 28px;
}
/* ── Article Card ──────────────────────────────────────────── */
.doc-card {
  background: var(--doc-card-bg);
  border-radius: var(--doc-radius);
  overflow: hidden;
  box-shadow: var(--doc-shadow);
  border: 1px solid var(--doc-border);
  transition: transform var(--doc-transition), box-shadow var(--doc-transition);
  display: flex;
  flex-direction: column;
}
.doc-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--doc-shadow-hover);
}
.doc-card-image-link {
  position: relative;
  display: block;
  overflow: hidden;
}
.doc-card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform .4s ease;
  display: block;
}
.doc-card:hover .doc-card-image {
  transform: scale(1.04);
}
.doc-card-category:not(:empty) {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--color-primary);
  color: #fff;
  font-size: .75rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 100px;
  letter-spacing: .4px;
  text-transform: uppercase;
}
.doc-card-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.doc-card-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0 0 8px;
  line-height: 1.4;
}
.doc-card-title a {
  color: var(--doc-text);
  text-decoration: none;
  transition: color var(--doc-transition);
}
.doc-card-title a:hover {
  color: var(--color-primary);
}
.doc-card-desc {
  font-size: .9rem;
  color: var(--doc-text-muted);
  line-height: 1.6;
  margin: 0 0 16px;
  flex: 1;
}
.doc-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--doc-border);
  padding-top: 12px;
  margin-top: auto;
}
.doc-card-date {
  font-size: .82rem;
  color: var(--doc-text-muted);
  display: inline-flex;
  gap: 5px;
}
.doc-read-more {
  font-size: .85rem;
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--doc-transition);
}
.doc-read-more:hover {
  color: var(--color-primary-hover);
}
/* ── Empty State ────────────────────────────────────────────── */
.list-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 64px 20px;
  color: var(--doc-text-muted);
}
.list-empty-icon {
  font-size: 3.5rem;
  margin-bottom: 16px;
  opacity: .5;
}
.list-empty h3 {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--doc-text-muted);
}
/* ── Pagination ─────────────────────────────────────────────── */
.doc-pagination {
  margin-top: 48px;
  display: flex;
  justify-content: center;
}
/* ── Article Detail Page ────────────────────────────────────── */
.doc-article {
  padding: 48px 0 64px;
  background: var(--doc-bg);
}
.doc-article-header {
  margin-bottom: 32px;
}
.doc-article-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.doc-meta-category {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  font-size: .78rem;
  font-weight: 600;
  padding: 3px 12px;
  border-radius: 100px;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: .4px;
  transition: background var(--doc-transition);
}
.doc-meta-category:hover {
  background: var(--color-primary-hover);
}
.doc-meta-date,
.doc-meta-views {
  font-size: .85rem;
  color: var(--doc-text-muted);
}
.doc-article-title {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--doc-text);
  line-height: 1.25;
  margin: 0 0 16px;
}
.doc-article-description {
  font-size: 1.1rem;
  color: var(--doc-text-muted);
  line-height: 1.7;
  margin: 0;
  font-style: italic;
}
/* ── Featured Image ──────────────────────────────────────────── */
.doc-featured-image {
  width: 100%;
  object-fit: cover;
  border-radius: var(--doc-radius);
  margin: 0 0 36px;
  display: block;
  box-shadow: var(--doc-shadow);
}
/* ── Article Body ────────────────────────────────────────────── */
.doc-article-body:empty {
  display: none;
}
.doc-article-body {
  background: var(--doc-card-bg);
  border-radius: var(--doc-radius);
  padding: 40px;
  box-shadow: var(--doc-shadow);
  border: 1px solid var(--doc-border);
  line-height: 1.85;
  font-size: 1rem;
  color: var(--doc-text);
  margin-bottom: 32px;
}
.doc-article-body h2,
.doc-article-body h3,
.doc-article-body h4 {
  font-weight: 700;
  margin: 1.5em 0 .6em;
  color: var(--doc-text);
}
.doc-article-body h2 {
  font-size: 1.5rem;
}
.doc-article-body h3 {
  font-size: 1.25rem;
}
.doc-article-body h4 {
  font-size: 1.05rem;
}
.doc-article-body p {
  margin: 0 0 1.2em;
}
.doc-article-body a {
  color: var(--color-primary);
  text-decoration: underline;
}
.doc-article-body img {
  max-width: 100%;
  border-radius: 8px;
  margin: 16px 0;
}
.doc-article-body ul,
.doc-article-body ol {
  padding-left: 1.6em;
  margin: 0 0 1.2em;
}
.doc-article-body blockquote {
  border-left: 4px solid var(--color-primary);
  margin: 1.5em 0;
  padding: 12px 20px;
  background: rgba(37, 99, 235, .05);
  border-radius: 0 8px 8px 0;
  color: var(--doc-text-muted);
  font-style: italic;
}
.doc-article-body pre,
.doc-article-body code {
  background: #f1f5f9;
  border-radius: 6px;
  font-family: 'Courier New', monospace;
}
.doc-article-body pre {
  padding: 16px 20px;
  overflow-x: auto;
  margin: 1.2em 0;
}
.doc-article-body code {
  padding: 2px 6px;
  font-size: .9em;
}
/* ── Article Footer ──────────────────────────────────────────── */
.doc-article-footer {
  margin-top: 32px;
}
.btn-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  background: var(--doc-card-bg);
  border: 1.5px solid var(--doc-border);
  border-radius: 100px;
  color: var(--doc-text);
  font-size: .9rem;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--doc-transition);
}
.btn-back:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}
/* ── Admin Image Upload ───────────────────────────────────────── */
.doc-image-upload-section {
  padding: 8px 0;
}
.doc-current-image {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 16px;
  background: #f1f5f9;
  border-radius: var(--doc-radius);
  border: 1px solid var(--doc-border);
  margin-bottom: 12px;
}
.doc-current-image img {
  width: 200px;
  height: 130px;
  object-fit: cover;
  border-radius: 8px;
  display: block;
}
.doc-upload-zone {
  border: 2px dashed var(--doc-border);
  border-radius: var(--doc-radius);
  padding: 40px 20px;
  text-align: center;
  cursor: pointer;
  transition: all var(--doc-transition);
  background: #fafbfc;
}
.doc-upload-zone:hover,
.doc-upload-zone.drag-over {
  border-color: var(--color-primary);
  background: rgba(37, 99, 235, .03);
}
.doc-upload-zone.drag-over {
  transform: scale(1.01);
}
.doc-upload-icon {
  font-size: 2.8rem;
  margin-bottom: 12px;
  opacity: .5;
}
.doc-upload-zone p {
  color: var(--doc-text-muted);
  font-weight: 500;
  margin: 0 0 6px;
}
.doc-upload-zone small {
  color: var(--doc-text-muted);
  font-size: .8rem;
  opacity: .7;
}
.doc-upload-progress {
  margin-top: 12px;
}
.progress-bar {
  height: 8px;
  background: var(--doc-border);
  border-radius: 100px;
  overflow: hidden;
  margin-bottom: 6px;
}
.progress-fill {
  height: 100%;
  background: var(--color-primary);
  transition: width .2s ease;
  border-radius: 100px;
}
#doc-progress-text {
  font-size: .82rem;
  color: var(--doc-text-muted);
}
/* ── Widget ──────────────────────────────────────────────────── */
.widget-document-latest {
  padding: 8px 0;
}
.widget-doc-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 10px 0;
  border-bottom: 1px solid var(--doc-border);
  text-decoration: none;
  color: var(--doc-text);
  transition: color var(--doc-transition);
}
.widget-doc-item:last-child {
  border-bottom: none;
}
.widget-doc-item:hover {
  color: var(--color-primary);
}
.widget-doc-thumb {
  width: 60px;
  height: 45px;
  object-fit: cover;
  border-radius: 6px;
  flex-shrink: 0;
}
.widget-doc-info {
  flex: 1;
  min-width: 0;
}
.widget-doc-title {
  font-size: .9rem;
  font-weight: 600;
  line-height: 1.4;
  margin: 0 0 4px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.widget-doc-date {
  font-size: .78rem;
  color: var(--doc-text-muted);
}
/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 768px) {
  .doc-title {
    font-size: 1.5rem;
  }
  .doc-list {
    grid-template-columns: 1fr;
    gap: 18px;
  }
  .doc-article-title {
    font-size: 1.6rem;
  }
  .doc-article-body {
    padding: 24px 20px;
  }
  .doc-article-body h2 {
    font-size: 1.25rem;
  }
  .doc-article-body h3 {
    font-size: 1.1rem;
  }
}
@media (max-width: 480px) {
  .doc-section,
  .doc-article {
    padding: 28px 0 40px;
  }
  .doc-category-filter {
    gap: 6px;
  }
}