/* ============================================================
   Publications Module — Admin + Frontend
   ============================================================ */

:root {
  --pub-primary:        #1d4ed8;
  --pub-primary-hover:  #1e40af;
  --pub-primary-light:  #eff6ff;
  --pub-danger:         #dc2626;
  --pub-danger-light:   #fef2f2;
  --pub-success:        #16a34a;
  --pub-success-light:  #f0fdf4;
  --pub-warning:        #d97706;
  --pub-border:         #e5e7eb;
  --pub-border-focus:   #3b82f6;
  --pub-bg:             #f9fafb;
  --pub-surface:        #ffffff;
  --pub-text:           #111827;
  --pub-text-secondary: #6b7280;
  --pub-text-muted:     #9ca3af;
  --pub-radius:         8px;
  --pub-radius-sm:      5px;
  --pub-shadow:         0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
  --pub-shadow-md:      0 4px 12px rgba(0,0,0,.10);
  --pub-transition:     150ms ease;
}

/* ── ADMIN PAGE WRAPPER ──────────────────────────────────── */
.pub-admin-page {
  background: #fff;
  padding: 24px;
  /* max-width: 1200px; */
}

/* ── PAGE HEADER ─────────────────────────────────────────── */
.pub-page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}
.pub-page-title {
  font-size: 30px;
  font-weight: 700;
  color: var(--pub-text);
  margin: 0 0 2px;
  line-height: 1.25;
}
.pub-page-subtitle {
  font-size: 12px;
  color: var(--pub-text-secondary);
  margin: 0;
}
.pub-breadcrumb {
  font-size: 12px;
  color: var(--pub-text-muted);
  margin-bottom: 4px;
}
.pub-breadcrumb a {
  color: var(--pub-primary);
  text-decoration: none;
}
.pub-breadcrumb span { margin: 0 6px; }

/* ── ALERTS ──────────────────────────────────────────────── */
.pub-alert {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 16px;
  border-radius: var(--pub-radius);
  font-size: 12px;
  margin-bottom: 20px;
}
.pub-alert svg { flex-shrink: 0; margin-top: 1px; }
.pub-alert-success {
  background: var(--pub-success-light);
  color: #15803d;
  border: 1px solid #bbf7d0;
}
.pub-alert-error {
  background: var(--pub-danger-light);
  color: var(--pub-danger);
  border: 1px solid #fecaca;
}

/* ── BUTTONS ─────────────────────────────────────────────── */
.pub-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 18px;
  border-radius: var(--pub-radius-sm);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  text-decoration: none;
  transition: background var(--pub-transition), border-color var(--pub-transition), color var(--pub-transition);
  white-space: nowrap;
}
.pub-btn-primary {
  background: var(--pub-primary);
  color: #fff;
}
.pub-btn-primary:hover { background: var(--pub-primary-hover); color: #fff; }
.pub-btn-secondary {
  background: var(--pub-surface);
  color: var(--pub-text);
  border-color: var(--pub-border);
}
.pub-btn-secondary:hover { background: var(--pub-bg); }
.pub-btn-ghost {
  background: transparent;
  color: var(--pub-text-secondary);
  border-color: var(--pub-border);
}
.pub-btn-ghost:hover { background: var(--pub-bg); color: var(--pub-text); }

/* ── FILTERS BAR ─────────────────────────────────────────── */
.pub-filters {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.pub-filter-group { display: flex; }

/* ── FORM INPUTS ─────────────────────────────────────────── */
.pub-input, .pub-select {
  height: 40px;
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--pub-border);
  border-radius: var(--pub-radius-sm);
  font-size: 12px;
  color: var(--pub-text);
  background: var(--pub-surface);
  transition: border-color var(--pub-transition), box-shadow var(--pub-transition);
  outline: none;
  font-family: inherit;
}
.pub-input:focus, .pub-select:focus {
  border-color: var(--pub-border-focus);
  box-shadow: 0 0 0 3px rgba(59,130,246,.15);
}
.pub-textarea { resize: vertical; min-height: 110px; }

/* ── TABLE ───────────────────────────────────────────────── */
.pub-table-wrap {
  background: var(--pub-surface);
  border-radius: var(--pub-radius);
  border: 1px solid var(--pub-border);
  overflow: hidden;
  box-shadow: var(--pub-shadow);
  overflow-x: auto;
}
.pub-table {
  width: 100%;
  border-collapse: collapse;
}
.pub-table thead th {
  background: var(--pub-bg);
  padding: 11px 14px;
  text-align: left;
  font-weight: 600;
  color: var(--pub-text-secondary);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .03em;
  border-bottom: 1px solid var(--pub-border);
  white-space: nowrap;
}
.pub-table tbody tr {
  border-bottom: 1px solid var(--pub-border);
  transition: background var(--pub-transition);
}
.pub-table tbody tr:last-child { border-bottom: 0; }
.pub-table tbody tr:hover { background: #f8faff; }
.pub-table td { padding: 12px 14px; vertical-align: middle; }
.pub-td-muted    { color: var(--pub-text-muted);     font-size: .8125rem; }
.pub-td-secondary{ color: var(--pub-text-secondary); }
.pub-td-center   { text-align: center; }
.pub-title-cell  { font-weight: 500; color: var(--pub-text); }
.pub-pdf-badge   {
  display: inline-block;
  margin-left: 6px;
  padding: 1px 5px;
  font-size: 10px;
  font-weight: 600;
  background: #fee2e2;
  color: #b91c1c;
  border-radius: 3px;
  letter-spacing: .03em;
  vertical-align: middle;
}
.pub-category-tag {
  display: inline-block;
  padding: 2px 8px;
  font-size: 12px;
  background: var(--pub-primary-light);
  color: var(--pub-primary);
  border-radius: 12px;
  font-weight: 500;
}
.pub-cover-thumb {
  width: 40px;
  height: 50px;
  object-fit: cover;
  border-radius: 4px;
  display: block;
  border: 1px solid var(--pub-border);
}
.pub-cover-placeholder {
  width: 40px;
  height: 50px;
  background: var(--pub-bg);
  border: 1px solid var(--pub-border);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--pub-text-muted);
}

/* ── STATUS TOGGLE BUTTON ────────────────────────────────── */
.pub-status-toggle {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: .75rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--pub-transition);
}
.pub-status-active   { background: var(--pub-success-light); color: var(--pub-success); }
.pub-status-inactive { background: #f3f4f6; color: var(--pub-text-muted); }

/* ── ACTION ICON BUTTONS ─────────────────────────────────── */
.pub-actions { display: flex; align-items: center; gap: 4px; }
.pub-icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--pub-radius-sm);
  border: 1px solid var(--pub-border);
  background: var(--pub-surface);
  color: var(--pub-text-secondary);
  cursor: pointer;
  text-decoration: none;
  transition: all var(--pub-transition);
}
.pub-icon-btn:hover { color: var(--pub-text); border-color: #d1d5db; background: var(--pub-bg); }
.pub-icon-btn-edit:hover   { color: var(--pub-primary);  border-color: #bfdbfe; background: var(--pub-primary-light); }
.pub-icon-btn-delete:hover { color: var(--pub-danger);   border-color: #fecaca; background: var(--pub-danger-light); }
.pub-icon-btn-download:hover { color: var(--pub-success); border-color: #bbf7d0; background: var(--pub-success-light); }
.pub-delete-form { display: inline; }

/* ── EMPTY STATE ─────────────────────────────────────────── */
.pub-empty {
  text-align: center;
  padding: 64px 24px;
  color: var(--pub-text-muted);
  background: var(--pub-surface);
  border: 1px solid var(--pub-border);
  border-radius: var(--pub-radius);
  box-shadow: var(--pub-shadow);
}
.pub-empty svg { display: block; margin: 0 auto 16px; opacity: .3; }
.pub-empty p   { margin: 0 0 20px; font-size: 1rem; }

/* ── PAGINATION ──────────────────────────────────────────── */
.pub-pagination {
  margin-top: 20px;
  display: flex;
  justify-content: flex-end;
}

/* ── FORM LAYOUT (2-col) ─────────────────────────────────── */
.pub-form-grid {
  display: grid;
  grid-template-columns: 1fr 340px;
  grid-template-rows: auto auto;
  gap: 24px;
  align-items: start;
}
.pub-form-main { display: flex; flex-direction: column; gap: 20px; }
.pub-form-side { display: flex; flex-direction: column; gap: 16px; }
.pub-form-footer {
  grid-column: 1 / -1;
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding-top: 8px;
  border-top: 1px solid var(--pub-border);
}
.pub-field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.pub-field { display: flex; flex-direction: column; gap: 6px; }
.pub-label {
  font-weight: 600;
  color: var(--pub-text);
}
.pub-required { color: var(--pub-danger); }
.pub-optional { font-size: .75rem; color: var(--pub-text-muted); font-weight: 400; }
.pub-help     { font-size: 11px; color: var(--pub-text-muted); margin: 4px 0 0; }
.pub-link     { color: var(--pub-primary); font-size: 10px; text-decoration: none; }
.pub-link:hover { text-decoration: underline; }

/* ── UPLOAD CARDS ────────────────────────────────────────── */
.pub-upload-card {
  background: var(--pub-surface);
  border: 1px solid var(--pub-border);
  border-radius: var(--pub-radius);
  padding: 16px;
  box-shadow: var(--pub-shadow);
}
.pub-upload-card-title {
  display: flex;
  align-items: center;
  gap: 7px;
  font-weight: 600;
  font-size: 14px;
  color: var(--pub-text);
  margin-bottom: 12px;
}
.pub-existing-file {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 10px;
  color: var(--pub-text-secondary);
  background: var(--pub-success-light);
  border: 1px solid #bbf7d0;
  padding: 7px 10px;
  border-radius: var(--pub-radius-sm);
  margin-bottom: 10px;
  flex-wrap: wrap;
}
.pub-cover-preview-img {
  width: 100%;
  max-height: 140px;
  object-fit: cover;
  border-radius: var(--pub-radius-sm);
  border: 1px solid var(--pub-border);
  margin-bottom: 10px;
  display: block;
}

/* ── DROP ZONE ───────────────────────────────────────────── */
.pub-drop-zone {
  border: 2px dashed var(--pub-border);
  border-radius: var(--pub-radius-sm);
  padding: 20px;
  cursor: pointer;
  transition: border-color var(--pub-transition), background var(--pub-transition);
  position: relative;
}
.pub-drop-zone:hover, .pub-drop-zone--over {
  border-color: var(--pub-primary);
  background: var(--pub-primary-light);
}
.pub-file-input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  width: 100%;
  height: 100%;
  z-index: 1;
}
.pub-drop-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: var(--pub-text-muted);
  pointer-events: none;
}
.pub-drop-label { font-size: 12px; color: var(--pub-text-secondary); }
.pub-drop-label strong { color: var(--pub-primary); }
.pub-drop-hint  { font-size: 10px; }
.pub-file-preview {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
  background: var(--pub-bg);
  padding: 8px;
  border-radius: var(--pub-radius-sm);
  pointer-events: none;
}

/* ── TOGGLE SWITCH ───────────────────────────────────────── */
.pub-toggle-label {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  user-select: none;
}
.pub-toggle-input { display: none; }
.pub-toggle-track {
  width: 40px;
  height: 22px;
  background: #d1d5db;
  border-radius: 11px;
  position: relative;
  transition: background var(--pub-transition);
  flex-shrink: 0;
}
.pub-toggle-input:checked + .pub-toggle-track { background: var(--pub-primary); }
.pub-toggle-thumb {
  width: 16px;
  height: 16px;
  background: #fff;
  border-radius: 50%;
  position: absolute;
  top: 3px;
  left: 3px;
  transition: transform var(--pub-transition);
  box-shadow: 0 1px 3px rgba(0,0,0,.2);
}
.pub-toggle-input:checked ~ .pub-toggle-track .pub-toggle-thumb { transform: translateX(18px); }
.pub-toggle-text { font-size: .875rem; color: var(--pub-text); }

/* ════════════════════════════════════════════════════════════
   FRONTEND SECTION
   ════════════════════════════════════════════════════════════ */
.pub-section { padding: 0 0 50px 0; }
.pub-container { max-width: 1440px; margin: 0 auto; padding: 0 24px; }
.pub-section-header { text-align: center; margin-bottom: 36px; }
.pub-section-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--pub-text);
  margin: 0 0 8px;
}
.pub-section-subtitle { font-size: 1rem; color: var(--pub-text-secondary); margin: 0; }

/* Category filter tabs */
.pub-filter-tabs {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 36px;
}
.pub-filter-tab {
  padding: 7px 18px;
  border-radius: 20px;
  border: 1px solid #616161;
  background: var(--pub-surface);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--pub-transition);
  font-family: inherit;
}
.pub-filter-tab:hover         { background: transparent; border-color: #1e5631; color: #1e5631; }
.pub-filter-tab--active       { background: #1e5631; color: #fff; border-color: #1e5631; }

/* Publications grid */
.pub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

/* Publication card */
.pub-card {
  background: var(--pub-surface);
  border: 1px solid var(--pub-border);
  border-radius: var(--pub-radius);
  overflow: hidden;
  box-shadow: var(--pub-shadow);
  transition: transform var(--pub-transition), box-shadow var(--pub-transition);
  display: flex;
  flex-direction: column;
}
.pub-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--pub-shadow-md);
}
.pub-card-cover {
  height: 300px;
  overflow: hidden;
  background: #e9eef5;
  position: relative;
}
.pub-card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.pub-card-cover-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #e0e7ff 0%, #dbeafe 100%);
  color: #93c5fd;
}
.pub-card-cat-badge {
  position: absolute;
  top: 10px;
  left: 10px;
  padding: 3px 9px;
  font-size: 8px;
  font-weight: 600;
  background: #1e5631cc;
  color: #fff;
  border-radius: 12px;
  letter-spacing: .03em;
  text-transform: uppercase;
}
.pub-card-body {
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}
.pub-card-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--pub-text);
  margin: 0;
  line-height: 1.4;
}
.pub-card-author {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  color: var(--pub-text-secondary);
  margin: 0;
}
.pub-card-desc {
  font-size: 12px;
  color: var(--pub-text-secondary);
  margin: 0;
  line-height: 1.55;
  flex: 1;
}
.pub-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 8px;
  gap: 8px;
}
.pub-card-date {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  color: var(--pub-text-muted);
}
.pub-download-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 7px 14px;
  background: #1e5631;
  color: #fff;
  border-radius: var(--pub-radius-sm);
  font-size: 12px;
  font-weight: 600;
  text-decoration: none;
  transition: background var(--pub-transition);
  white-space: nowrap;
}
.pub-download-btn:hover { color: #fff; }

.pub-empty-front {
  text-align: center;
  padding: 48px;
  color: var(--pub-text-muted);
  font-size: 1rem;
}

/* ── RESPONSIVE ──────────────────────────────────────────── */
@media (max-width: 900px) {
  .pub-form-grid { grid-template-columns: 1fr; }
  .pub-form-side { order: -1; }
  .pub-form-footer { grid-column: 1; }
}
@media (max-width: 640px) {
  .pub-page-header { flex-direction: column; align-items: flex-start; }
  .pub-field-row { grid-template-columns: 1fr; }
  .pub-grid { grid-template-columns: 1fr; }
  .pub-admin-page { padding: 16px; }
}