/* ============================================================
   Laboratorio Editorial · Estilos
   Tokens heredados de Colección Historia (mismo lenguaje institucional):
   azul #0f2549, dorado #C19A6B/#A87F4D, Playfair Display + Inter.
   ============================================================ */

.lec-root [hidden] { display: none !important; }

.lec-root {
  --lec-primary: #0f2549;
  --lec-primary-600: #1a3a6b;
  --lec-primary-50: #e8eef7;
  --lec-secondary: #C19A6B;
  --lec-secondary-600: #A87F4D;
  --lec-secondary-50: #F6EDDD;
  --lec-gray-dark: #2C2C2C;
  --lec-gray-soft: #6B6B6B;
  --lec-gray-light: #F5F5F5;
  --lec-gray-bg: #FAFAF8;
  --lec-border: #E0E0E0;
  --lec-border-soft: #EBEBEB;
  --lec-error: #DC2626;
  --lec-font-display: 'Playfair Display', Georgia, serif;
  --lec-font-body: 'Inter', -apple-system, system-ui, sans-serif;

  font-family: var(--lec-font-body);
  font-size: 16px;
  color: var(--lec-gray-dark);
  line-height: 1.5;
  max-width: 1280px;
  margin: 0 auto;
}

.lec-root *, .lec-root *::before, .lec-root *::after { box-sizing: border-box; }
.lec-root img { max-width: 100%; height: auto; }

.lec-eyebrow {
  font-size: 11px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.14em; color: var(--lec-gray-soft); margin: 0 0 6px;
}

@keyframes le-shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

/* ---------- Layout ---------- */
.lec-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 28px;
  align-items: start;
  padding: 24px 24px 64px;
}
@media (max-width: 860px) {
  .lec-layout { grid-template-columns: 1fr; }
}

/* ---------- Sidebar ---------- */
.lec-sidebar {
  position: sticky; top: 24px;
  background: #FFFFFF; border: 1px solid var(--lec-border); border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.lec-sidebar-header { padding: 20px 20px 12px; border-bottom: 1px solid var(--lec-border); }
.lec-sidebar-title {
  font-family: var(--lec-font-display); font-size: 20px; font-weight: 600;
  color: var(--lec-primary); margin: 0; line-height: 1.2;
}

.lec-tree { padding: 16px 12px; display: flex; flex-direction: column; gap: 2px; }

.lec-tree-leaf, .lec-tree-parent {
  display: flex; align-items: center; gap: 10px; width: 100%; text-align: left;
  border: none; cursor: pointer; background: transparent; border-radius: 8px;
  padding: 8px; font-size: 14px; color: var(--lec-gray-dark); transition: background .12s;
}
.lec-tree-parent { align-items: flex-start; gap: 8px; padding-top: 9px; padding-bottom: 9px; }
.lec-tree-leaf:hover { background: var(--lec-gray-bg); }
.lec-tree-parent:hover { background: var(--lec-gray-bg); }

.lec-tree-leaf.is-active { background: var(--lec-primary-50); color: var(--lec-primary); font-weight: 600; }
.lec-tree-leaf.is-active .lec-dot { border: 4px solid var(--lec-primary); }
.lec-tree-leaf.is-active:hover { background: var(--lec-primary-50); }

.lec-dot {
  width: 14px; height: 14px; border-radius: 50%; flex-shrink: 0;
  border: 2px solid var(--lec-border); box-sizing: border-box;
}
.lec-tree-label { flex: 1; line-height: 1.3; }
.lec-tree-parent-text { flex: 1; }
.lec-tree-parent .lec-tree-label { display: block; font-size: 13.5px; font-weight: 700; color: var(--lec-primary); }
.lec-tree-parent.has-active-child .lec-tree-label { color: var(--lec-secondary-600); }
.lec-tree-sub {
  display: block; font-family: var(--lec-font-display); font-style: italic;
  font-size: 11.5px; color: var(--lec-secondary-600); margin-top: 1px;
}
.lec-chev { font-size: 11px; color: var(--lec-secondary-600); margin-top: 4px; width: 12px; flex-shrink: 0; }

.lec-cnt {
  font-size: 12px; color: var(--lec-gray-soft); background: var(--lec-gray-light);
  padding: 1px 8px; border-radius: 999px; flex-shrink: 0;
}
.lec-tree-leaf.is-active .lec-cnt { background: #FFFFFF; color: var(--lec-primary); }
.lec-tree-parent .lec-cnt { margin-top: 2px; font-size: 11px; }

.lec-tree-children { display: flex; flex-direction: column; gap: 2px; }
.lec-tree-children[hidden] { display: none; }

.lec-sidebar-footer {
  padding: 4px 20px 20px; display: flex; flex-direction: column; gap: 18px;
  border-top: 1px solid var(--lec-border-soft); margin-top: 4px;
}
.lec-control { display: flex; flex-direction: column; margin-top: 16px; }
.lec-control:first-child { margin-top: 0; }
.lec-hint { margin: 4px 0 0; font-size: 11px; color: var(--lec-gray-soft); line-height: 1.4; }

.lec-input-wrap, .lec-select-wrap { position: relative; display: flex; align-items: center; }
.lec-input-icon { position: absolute; left: 10px; color: var(--lec-gray-soft); font-size: 14px; pointer-events: none; }
.lec-select-caret { position: absolute; right: 10px; color: var(--lec-gray-soft); font-size: 12px; pointer-events: none; }
#lec-search, #lec-sort {
  width: 100%; padding: 10px 36px; border: 1px solid var(--lec-border-soft); border-radius: 8px;
  background: var(--lec-gray-bg); font-size: 14px; color: var(--lec-gray-dark);
}
#lec-sort { appearance: none; cursor: pointer; }

/* ---------- Botones ---------- */
.lec-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 16px; border-radius: 8px; font-size: 14px; font-weight: 600;
  cursor: pointer; min-height: 44px; border: 1px solid transparent; font-family: inherit;
}
.lec-btn-block { width: 100%; }
.lec-btn-primary { background: var(--lec-primary); color: #FFFFFF; border-color: var(--lec-primary); }
.lec-btn-primary:hover { background: var(--lec-primary-600); }
.lec-btn-ghost { background: transparent; color: var(--lec-gray-soft); border-color: var(--lec-border); }
.lec-btn-ghost:hover { color: var(--lec-primary); border-color: var(--lec-primary); background: var(--lec-primary-50); }
.lec-btn-edit {
  background: var(--lec-secondary-50); color: var(--lec-secondary-600);
  border-color: rgba(193,154,107,0.3); min-height: 36px; padding: 6px 12px; font-size: 13px;
}
.lec-btn-edit:hover { background: var(--lec-secondary); color: var(--lec-gray-dark); }
.lec-btn-danger {
  background: transparent; color: var(--lec-error); border-color: var(--lec-error);
  min-height: 36px; padding: 6px 12px; font-size: 13px;
}
.lec-btn-danger:hover { background: var(--lec-error); color: #FFFFFF; }

/* ---------- Main / Pills ---------- */
.lec-main { min-width: 0; }
.lec-pills { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin-bottom: 14px; }
.lec-pill {
  display: inline-flex; align-items: center; gap: 6px; padding: 4px 10px 4px 12px;
  background: var(--lec-primary-50); border: 1px solid var(--lec-primary); border-radius: 999px;
  font-size: 12px; font-weight: 600; color: var(--lec-primary); cursor: pointer; white-space: nowrap;
}
.lec-pill:hover { background: var(--lec-primary); color: #FFFFFF; }
.lec-pill-clear {
  display: inline-flex; align-items: center; gap: 6px; padding: 4px 12px;
  background: transparent; border: 1px solid var(--lec-gray-soft); border-radius: 999px;
  font-size: 12px; font-weight: 600; color: var(--lec-gray-soft); cursor: pointer; white-space: nowrap;
}
.lec-pill-clear:hover { background: var(--lec-gray-soft); color: #FFFFFF; }

.lec-results-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; margin-bottom: 20px; flex-wrap: wrap; }
.lec-results-title { font-family: var(--lec-font-display); font-size: 22px; font-weight: 600; color: var(--lec-primary); margin: 0; line-height: 1.2; }
.lec-results-sub { font-size: 13px; color: var(--lec-gray-soft); margin: 4px 0 0; font-style: italic; }
.lec-results-count { font-size: 14px; color: var(--lec-gray-soft); margin: 0; flex-shrink: 0; padding-top: 4px; }
.lec-results-count b { color: var(--lec-primary); font-weight: 700; font-size: 18px; }

/* ---------- Skeleton ---------- */
.lec-skeleton-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.lec-card-skeleton { background: #FFFFFF; border-radius: 12px; border: 1px solid var(--lec-border-soft); overflow: hidden; }
.lec-skel-thumb { width: 100%; aspect-ratio: 3/4; background: linear-gradient(90deg,#f0f0f0 25%,#e0e0e0 50%,#f0f0f0 75%); background-size: 200% 100%; animation: le-shimmer 1.4s infinite; }
.lec-skel-body { padding: 16px; display: flex; flex-direction: column; gap: 8px; }
.lec-skel-line { border-radius: 4px; background: linear-gradient(90deg,#f0f0f0 25%,#e0e0e0 50%,#f0f0f0 75%); background-size: 200% 100%; animation: le-shimmer 1.4s infinite; }

/* Skeleton del árbol (se muestra mientras carga desde API) */
.lec-tree-loading { padding: 8px 0; }
.lec-skeleton-tree { display: flex; flex-direction: column; gap: 4px; }
.lec-skel-tree-line { border-radius: 8px; background: linear-gradient(90deg,#f0f0f0 25%,#e0e0e0 50%,#f0f0f0 75%); background-size: 200% 100%; animation: le-shimmer 1.4s infinite; }

/* ---------- Grid de cards ---------- */
.lec-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
@media (max-width: 860px) { .lec-grid, .lec-skeleton-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .lec-grid, .lec-skeleton-grid { grid-template-columns: 1fr; } }

.lec-card {
  background: #FFFFFF; border-radius: 12px; border: 1px solid var(--lec-border-soft);
  box-shadow: 0 2px 8px rgba(0,0,0,0.06); overflow: hidden; cursor: pointer;
  display: flex; flex-direction: column;
  transition: transform .2s ease-out, box-shadow .2s ease-out;
}
.lec-card:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,0,0,0.12); }
.lec-card-cover {
  position: relative; width: 100%; aspect-ratio: 3/4; overflow: hidden; background: var(--lec-gray-light);
  display: flex; flex-direction: column; justify-content: flex-end; padding: 20px 18px 46px; box-sizing: border-box;
}
.lec-card-cover-title { display: block; font-family: var(--lec-font-display); font-size: 19px; font-weight: 600; line-height: 1.25; }
.lec-card-cover-autor { display: block; font-size: 11.5px; margin-top: 10px; }
.lec-card-badge {
  position: absolute; top: 12px; left: 12px; padding: 4px 10px; border-radius: 6px;
  font-size: 10.5px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; line-height: 1;
}
.lec-card-body { padding: 16px; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.lec-card-title { font-family: var(--lec-font-display); font-size: 17px; font-weight: 600; line-height: 1.25; color: var(--lec-gray-dark); margin: 0; }
.lec-card-autor { font-size: 13px; color: var(--lec-gray-soft); margin: 0; }
.lec-card-anio { font-size: 14px; font-weight: 600; color: var(--lec-secondary-600); margin: 0; }
.lec-card-footer { margin-top: auto; padding-top: 12px; border-top: 1px solid var(--lec-border-soft); }
.lec-card-more {
  display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px; border-radius: 6px;
  border: 1px solid var(--lec-primary); color: var(--lec-primary); font-size: 13px; font-weight: 600;
}

/* ---------- Empty state ---------- */
.lec-empty {
  text-align: center; padding: 64px 20px; background: var(--lec-gray-bg);
  border: 1px dashed var(--lec-border); border-radius: 12px;
}
.lec-empty-icon { font-size: 42px; color: var(--lec-secondary); margin-bottom: 16px; }
.lec-empty-title { font-family: var(--lec-font-display); font-size: 22px; font-weight: 600; color: var(--lec-primary); margin: 0 0 8px; }
.lec-empty-desc { color: var(--lec-gray-soft); font-size: 14px; margin: 0 0 16px; }

/* ---------- Paginación ---------- */
.lec-pagination { margin-top: 28px; display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.lec-showing-text { font-size: 14px; color: var(--lec-gray-soft); margin: 0; }
.lec-showing-text strong { color: var(--lec-gray-dark); }
.lec-pagination-controls { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.lec-page-btn {
  display: inline-flex; align-items: center; gap: 6px; min-width: 36px; height: 36px; padding: 0 12px;
  border: 1px solid var(--lec-border); border-radius: 8px; background: #FFFFFF; color: var(--lec-gray-dark);
  font-size: 14px; font-weight: 500; cursor: pointer;
}
.lec-page-btn:hover { background: var(--lec-gray-light); }
.lec-page-btn:disabled { opacity: .4; cursor: default; }
.lec-page-numbers { display: flex; align-items: center; gap: 6px; }
.lec-page-num {
  display: inline-flex; align-items: center; justify-content: center; min-width: 36px; height: 36px; padding: 0 12px;
  border: 1px solid var(--lec-border); border-radius: 8px; background: #FFFFFF; color: var(--lec-gray-dark);
  font-size: 14px; font-weight: 600; cursor: pointer;
}
.lec-page-num:hover { border-color: var(--lec-gray-soft); }
.lec-page-num.is-current { background: var(--lec-primary-600); color: #FFFFFF; border-color: var(--lec-primary-600); }

/* ---------- Detalle ---------- */
.lec-detail-card { background: #FFFFFF; border: 1px solid var(--lec-border-soft); border-radius: 16px; box-shadow: 0 4px 12px rgba(0,0,0,0.08); overflow: hidden; }
.lec-detail-head { display: flex; align-items: center; justify-content: space-between; padding: 16px 32px; background: var(--lec-gray-bg); border-bottom: 1px solid var(--lec-border-soft); }
.lec-badge { padding: 4px 10px; border-radius: 6px; font-size: 10.5px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; }
.lec-detail-body { display: grid; grid-template-columns: minmax(0, 340px) 1fr; gap: 32px; padding: 28px 32px; }
@media (max-width: 700px) { .lec-detail-body { grid-template-columns: 1fr; } }
.lec-detail-cover-col { display: flex; flex-direction: column; gap: 12px; }
.lec-detail-cover {
  position: relative; width: 100%; aspect-ratio: 3/4; border-radius: 12px; overflow: hidden;
  display: flex; flex-direction: column; justify-content: space-between; padding: 24px 22px;
  box-sizing: border-box; box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}
.lec-cover-imprint { font-size: 10px; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; }
.lec-cover-title { display: block; font-family: var(--lec-font-display); font-size: 24px; font-weight: 600; line-height: 1.25; }
.lec-cover-autor { display: block; font-size: 13px; margin-top: 12px; }
.lec-cover-rule { width: 40px; height: 2px; display: block; }
.lec-cover-note { font-size: 11px; color: var(--lec-gray-soft); margin: 0; text-align: center; font-style: italic; }

.lec-detail-info-col { display: flex; flex-direction: column; gap: 18px; min-width: 0; }
.lec-detail-title { font-family: var(--lec-font-display); font-size: 28px; font-weight: 600; color: var(--lec-primary); margin: 0; line-height: 1.2; }
.lec-detail-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; font-size: 14px; color: var(--lec-gray-soft); margin: 8px 0 0; }
.lec-detail-autor { color: var(--lec-gray-dark); font-weight: 600; }
.lec-detail-anio { color: var(--lec-secondary-600); font-weight: 600; }
.lec-meta-sep { opacity: .5; }

.lec-detail-facts { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 24px; margin: 0; padding: 18px 20px; background: var(--lec-gray-bg); border: 1px solid var(--lec-border-soft); border-radius: 12px; }
.lec-detail-facts dt { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.12em; color: var(--lec-gray-soft); }
.lec-detail-facts dd { margin: 2px 0 0; font-size: 14px; color: var(--lec-gray-dark); font-weight: 500; }
.lec-mono { font-family: ui-monospace, 'SF Mono', Menlo, monospace; }

.lec-detail-desc { font-size: 15px; line-height: 1.65; color: var(--lec-gray-dark); margin: 0; }
.lec-detail-actions { display: flex; gap: 8px; padding-top: 14px; border-top: 1px solid var(--lec-border-soft); flex-wrap: wrap; align-items: center; }
.lec-gestor-note { font-size: 11px; color: var(--lec-gray-soft); margin-left: 4px; }
.lec-detail-foot { padding: 14px 32px; background: var(--lec-gray-bg); border-top: 1px solid var(--lec-border-soft); }

/* ---------- Toast ---------- */
.lec-toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--lec-gray-dark); color: #fff; padding: 12px 20px; border-radius: 8px;
  font-size: 14px; z-index: 999; box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}
.lec-toast.is-error { background: var(--lec-error); }

/* ============================================================
   MODAL DETALLE (reutilizado de Colección Historia)
   Arquitectura: backdrop + container + (head/body/foot)
   ============================================================ */
.lec-modal-backdrop {
  position: fixed; inset: 0; z-index: 100; background: rgba(0,0,0,0.7);
  backdrop-filter: blur(4px); display: flex; align-items: center; justify-content: center;
  padding: 20px; overflow-y: auto; opacity: 0; transition: opacity 0.2s ease;
}
.lec-modal-backdrop[aria-hidden="false"] { opacity: 1; }
.lec-modal-backdrop[aria-hidden="true"] { pointer-events: none; }
.lec-modal-backdrop.lec-modal-closing { opacity: 0; }

.lec-modal-container {
  background: #fff; border-radius: 16px; box-shadow: 0 20px 40px rgba(0,0,0,0.3);
  width: 100%; max-width: 900px; max-height: 90vh; overflow-y: auto;
  transform: scale(0.95); transition: transform 0.2s ease;
}
.lec-modal-backdrop[aria-hidden="false"] .lec-modal-container { transform: scale(1); }

/* Loading skeleton */
.lec-modal-container.is-loading [data-modal-titulo],
.lec-modal-container.is-loading [data-modal-autor],
.lec-modal-container.is-loading [data-modal-descripcion] {
  background: linear-gradient(90deg,#f0f0f0 25%,#e0e0e0 50%,#f0f0f0 75%);
  background-size: 200% 100%; animation: le-shimmer 1.4s infinite;
  color: transparent !important; border-radius: 4px;
}

/* Head */
.lec-modal-head {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 12px;
  padding: 20px 32px 16px; border-bottom: 1px solid var(--lec-border-soft);
}
.lec-modal-close {
  background: transparent; border: none; cursor: pointer; color: var(--lec-gray-soft);
  width: 36px; height: 36px; display: flex; align-items: center; justify-content: center;
  border-radius: 8px; flex-shrink: 0; font-size: 20px; transition: all 0.15s;
}
.lec-modal-close:hover { background: var(--lec-gray-light); color: var(--lec-primary); }

/* Body */
.lec-modal-body {
  display: grid; grid-template-columns: minmax(0, 280px) 1fr; gap: 32px; padding: 28px 32px;
}
@media (max-width: 700px) { .lec-modal-body { grid-template-columns: 1fr; gap: 24px; } }

.lec-modal-cover-col { display: flex; flex-direction: column; gap: 12px; }
.lec-modal-cover-wrap {
  position: relative; width: 100%; aspect-ratio: 3/4; border-radius: 12px; overflow: hidden;
  cursor: pointer; display: block; border: none; padding: 0; box-shadow: 0 8px 24px rgba(0,0,0,0.12);
  transition: transform 0.2s;
}
.lec-modal-cover-wrap:hover { transform: translateY(-4px); }
.lec-modal-cover-img { width: 100%; height: 100%; object-fit: cover; display: block; }
.lec-img-overlay {
  position: absolute; inset: 0; background: rgba(0,0,0,0.6); display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 8px; color: #fff; font-size: 14px;
  opacity: 0; transition: opacity 0.2s;
}
.lec-modal-cover-wrap:hover .lec-img-overlay { opacity: 1; }
.lec-img-overlay i { font-size: 28px; }

.lec-modal-cover-actions { display: flex; gap: 8px; }
.lec-btn-sm { padding: 8px 12px; font-size: 13px; min-height: 36px; }

.lec-modal-info-col { display: flex; flex-direction: column; gap: 20px; min-width: 0; }
.lec-modal-header-info { display: flex; flex-direction: column; gap: 8px; }
.lec-modal-title { font-family: var(--lec-font-display); font-size: 26px; font-weight: 600; color: var(--lec-primary); margin: 0; line-height: 1.2; }
.lec-modal-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; font-size: 14px; color: var(--lec-gray-soft); margin: 0; }
.lec-modal-autor { color: var(--lec-gray-dark); font-weight: 600; }

.lec-modal-facts {
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px 20px; margin: 0;
  padding: 16px 18px; background: var(--lec-gray-bg); border: 1px solid var(--lec-border-soft); border-radius: 10px;
}
.lec-modal-facts dt { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; color: var(--lec-gray-soft); margin: 0; }
.lec-modal-facts dd { margin: 3px 0 0; font-size: 14px; color: var(--lec-gray-dark); font-weight: 500; }

.lec-modal-section { display: flex; flex-direction: column; gap: 8px; }
.lec-modal-desc { font-size: 15px; line-height: 1.65; color: var(--lec-gray-dark); margin: 0; }

.lec-modal-share { display: flex; flex-direction: column; gap: 10px; padding-top: 16px; border-top: 1px solid var(--lec-border-soft); }
.lec-share-group { display: flex; gap: 8px; flex-wrap: wrap; }
.lec-share-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 8px 14px; border: 1px solid var(--lec-border); border-radius: 8px;
  background: #fff; color: var(--lec-gray-dark); font-size: 13px; font-weight: 600;
  cursor: pointer; min-height: 36px; transition: all 0.15s; font-family: inherit;
}
.lec-share-btn:hover { background: var(--lec-gray-light); border-color: var(--lec-gray-soft); }
.lec-share-btn.copied { background: var(--lec-primary); color: #fff; border-color: var(--lec-primary); }
.lec-short-url { font-size: 12px; color: var(--lec-gray-soft); font-family: ui-monospace, monospace; margin: 0; word-break: break-all; }

.lec-modal-actions {
  display: flex; gap: 8px; padding-top: 14px; border-top: 1px solid var(--lec-border-soft); flex-wrap: wrap; align-items: center;
}

/* Foot */
.lec-modal-foot { padding: 16px 32px; background: var(--lec-gray-bg); border-top: 1px solid var(--lec-border-soft); }

/* ============================================================
   MODAL ZOOM
   ============================================================ */
.lec-zoom-backdrop {
  position: fixed; inset: 0; z-index: 110; background: rgba(0,0,0,0.92);
  display: flex; align-items: center; justify-content: center; padding: 20px;
  opacity: 0; transition: opacity 0.2s;
}
.lec-zoom-backdrop[aria-hidden="false"] { opacity: 1; }
.lec-zoom-backdrop[aria-hidden="true"] { pointer-events: none; }

.lec-zoom-close {
  position: absolute; top: 20px; right: 20px; z-index: 111; background: rgba(255,255,255,0.2);
  border: none; cursor: pointer; color: #fff; width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center; border-radius: 50%;
  font-size: 24px; backdrop-filter: blur(10px); transition: background 0.2s;
}
.lec-zoom-close:hover { background: rgba(255,255,255,0.3); }

.lec-zoom-content { display: flex; flex-direction: column; align-items: center; gap: 16px; max-width: 90vw; max-height: 90vh; }
.lec-zoom-img { max-width: 100%; max-height: 80vh; border-radius: 8px; box-shadow: 0 20px 40px rgba(0,0,0,0.5); }
.lec-zoom-caption { color: #fff; font-size: 16px; font-weight: 600; text-align: center; text-shadow: 0 2px 8px rgba(0,0,0,0.5); }