/* ═══════════════════════════════════════════════════════════
   Área Docentes — estilos específicos (extiende global.css)
   ══════════════════════════════════════════════════════════ */

.docentes-hub {
  padding: 4rem 5%;
  max-width: 1100px;
  margin: 0 auto;
}

.docentes-hub .hub-header h1 {
  font-size: 3rem;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.docentes-hub .hub-header > p {
  color: var(--color-text-light);
  font-size: 1.1rem;
  max-width: 640px;
  margin: 0 auto;
}

/* Filtros */
.docentes-filters {
  margin-top: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  background: var(--color-surface);
  padding: 1.75rem 2rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.filter-group-label {
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-light);
}

.filter-group-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.actividades-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 2rem 0 1.25rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.actividades-count {
  font-weight: 600;
  color: var(--color-text-light);
  font-size: 0.95rem;
}

.actividades-hint {
  font-size: 0.85rem;
  color: var(--color-text-light);
}

/* Grilla de actividades */
.actividades-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.actividad-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  border-left: 4px solid var(--color-primary);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.actividad-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.actividad-card.accent-purple { border-left-color: #7c3aed; }
.actividad-card.accent-blue { border-left-color: #0ea5e9; }
.actividad-card.accent-orange { border-left-color: #f97316; }
.actividad-card.accent-green { border-left-color: #16a34a; }
.actividad-card.accent-teal { border-left-color: #0d9488; }
.actividad-card.accent-rose { border-left-color: #e11d48; }

.actividad-card-header {
  padding: 1.25rem 1.5rem 0.75rem;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
}

.actividad-titulo {
  font-size: 1.2rem;
  color: var(--color-text);
  flex: 1;
  min-width: 200px;
  line-height: 1.3;
}

.actividad-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  flex-shrink: 0;
}

.actividad-card-body {
  display: flex;
  align-items: stretch;
  gap: 1.25rem;
  padding: 0 1.5rem 1.5rem;
}

.actividad-resena {
  flex: 1;
  color: var(--color-text-light);
  font-size: 0.95rem;
  line-height: 1.65;
  margin: 0;
  padding: 0.75rem 1rem;
  background: var(--color-background);
  border-radius: var(--radius-md);
}

/* Botón fotocopia */
.fotocopia-btn {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  width: 110px;
  padding: 1rem 0.75rem;
  background: linear-gradient(180deg, #ffffff 0%, #f1f5f9 100%);
  border: 2px dashed #cbd5e1;
  border-radius: var(--radius-md);
  color: var(--color-text);
  text-decoration: none;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-sm);
}

.fotocopia-btn:hover {
  border-color: var(--color-primary);
  background: linear-gradient(180deg, #faf5ff 0%, #ede9fe 100%);
  transform: scale(1.03);
  box-shadow: var(--shadow-md);
}

.fotocopia-stack {
  position: relative;
  width: 48px;
  height: 52px;
}

.fotocopia-sheet {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 48px;
  border-radius: 4px;
  background: white;
  border: 1px solid #e2e8f0;
  box-shadow: 0 1px 3px rgb(0 0 0 / 0.08);
}

.fotocopia-sheet-back {
  top: 4px;
  transform: translateX(-50%) rotate(-4deg);
  background: #f8fafc;
}

.fotocopia-sheet-front {
  top: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  transform: translateX(-50%) rotate(2deg);
}

.fotocopia-label {
  font-weight: 800;
  font-size: 0.85rem;
  color: var(--color-primary);
}

.fotocopia-hint {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Estado vacío */
.actividades-empty {
  text-align: center;
  padding: 3rem 2rem;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.actividades-empty[hidden],
.actividades-grid[hidden] {
  display: none !important;
}

.actividades-empty-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.actividades-empty h2 {
  font-size: 1.35rem;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.actividades-empty p {
  color: var(--color-text-light);
}

/* Responsive */
@media (max-width: 640px) {
  .actividad-card-body {
    flex-direction: column;
  }

  .fotocopia-btn {
    width: 100%;
    flex-direction: row;
    justify-content: center;
    padding: 1rem 1.25rem;
    gap: 1rem;
  }

  .fotocopia-stack {
    width: 40px;
    height: 44px;
  }
}

@media (min-width: 900px) {
  .actividades-grid {
    grid-template-columns: 1fr;
  }
}