/* ═══════════════════════════════════════════════════════════════════════════
   Actividades - Subir actividad (alumno) + Correcciones (profesor)
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── Upload box (cuadro con +) ── */
.sa-upload-box {
  width: 100%;
  height: 200px;
  border: 2px dashed var(--border-color, #ccc);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.sa-upload-box:hover {
  border-color: var(--color-primary, #333);
}
.sa-upload-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.4;
}
.sa-upload-placeholder svg {
  width: 40px;
  height: 40px;
}
.sa-file-input {
  display: none;
}

/* ── Preview nueva (dentro del upload box) ── */
.sa-preview-nueva {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
.sa-preview-nueva img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 10px;
}

/* ── Preview de imagen enviada ── */
.sa-preview {
  width: 100%;
  height: 200px;
  border-radius: 12px;
  overflow: hidden;
  flex-shrink: 0;
}
.sa-estado .sa-preview img {
  width: 100% !important;
  height: 100% !important;
  max-width: 100% !important;
  object-fit: cover;
  display: block;
}

/* ── Estados del formulario ── */
.sa-estado {
  padding: 20px;
  border-radius: 20px;
}
.sa-nuevo {
  border: 1px solid var(--border-color, #e0e0e0);
}
.sa-revision {
  background: var(--sa-revision-bg, #fff8e1);
  border: 1px solid var(--sa-revision-border, #ffe082);
}
.sa-corregir {
  background: var(--sa-corregir-bg, #fef2f2);
  border: 1px solid var(--sa-corregir-border, #fca5a5);
}
.sa-completado {
  background: var(--sa-completado-bg, #f0fdf4);
  border: 1px solid var(--sa-completado-border, #86efac);
}

/* ── Completado: imagen con nota superpuesta ── */
.sa-completado-img {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  width: 100%;
}
.sa-completado-img img {
  width: 100%;
  display: block;
  border-radius: 12px;
}
.sa-nota-badge {
  position: absolute;
  top: 10px;
  right: 10px;
  background: rgba(0, 0, 0, 0.7);
  color: #fff;
  font-weight: 700;
  font-size: 16px;
  padding: 6px 14px;
  border-radius: 20px;
  backdrop-filter: blur(4px);
}
.sa-comentario-aprobado {
  margin: 0;
  padding: 10px 15px;
  border-left: 3px solid var(--sa-completado-border, #86efac);
  background: rgba(0, 0, 0, 0.03);
  border-radius: 0 8px 8px 0;
  font-style: italic;
}

/* ── Botón enviar ── */
.sa-btn-enviar {
  padding: 8px 20px;
  background: var(--color-primary, #333);
  color: #fff;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}
.sa-btn-enviar:disabled {
  opacity: 0.5;
  cursor: default;
}

/* ── Comentario del profesor ── */
.sa-comentario-prof {
  margin: 0;
  padding: 10px 15px;
  border-left: 3px solid var(--sa-corregir-border, #fca5a5);
  background: rgba(0, 0, 0, 0.03);
  border-radius: 0 8px 8px 0;
  font-style: italic;
}
.sa-fecha {
  font-size: 13px;
  opacity: 0.6;
}
.sa-msg {
  font-size: 14px;
  color: red;
}

/* ═══════════════════════════════════════════════════════════════════════════
   Panel de correcciones (profesor)
   ═══════════════════════════════════════════════════════════════════════════ */
.corr-panel {
  max-width: 100%;
}
.corr-lista {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 15px;
}
@media (max-width: 1200px) {
  .corr-lista {
    grid-template-columns: repeat(4, 1fr);
  }
}
@media (max-width: 768px) {
  .corr-lista {
    grid-template-columns: 1fr;
  }
}

/* ── Filtros ── */
.corr-filtros {
  flex-wrap: wrap;
}
.corr-filtro-btn {
  padding: 6px 14px;
  border: 1px solid var(--border-color, #ddd);
  border-radius: 20px;
  text-decoration: none;
  color: var(--text-color, #333);
  font-size: 14px;
}
.corr-filtro-activo {
  background: var(--color-primary, #333);
  color: #fff;
  border-color: var(--color-primary, #333);
}

/* ── Tarjeta de actividad ── */
.corr-item {
  border: 1px solid var(--border-color, #ddd);
  border-radius: 12px;
  padding: 15px;
  background: var(--bg-secondary, #fafafa);
}
.corr-avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  object-fit: cover;
}
.corr-info {
  flex: 1;
}
.corr-leccion {
  font-size: 13px;
  opacity: 0.7;
}

/* ── Badges de estado ── */
.corr-badge {
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
  align-self: flex-start;
}
.corr-badge-pendiente {
  background: #fff3cd;
  color: #856404;
}
.corr-badge-en-revision {
  background: #cce5ff;
  color: #004085;
}
.corr-badge-corregir {
  background: #f8d7da;
  color: #721c24;
}
.corr-badge-completado {
  background: #d4edda;
  color: #155724;
}

/* ── Imagen y acciones ── */
.corr-imagen img {
  max-width: 100%;
  border-radius: 8px;
  margin: 10px 0;
}
.corr-nota-select,
.corr-estado-select {
  padding: 6px 10px;
  border: 1px solid #ccc;
  border-radius: 8px;
}
.corr-comentario {
  width: 100%;
  padding: 8px;
  border: 1px solid #ccc;
  border-radius: 8px;
  resize: vertical;
}
.corr-btn-calificar {
  padding: 8px 20px;
  background: var(--color-primary, #333);
  color: #fff;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  align-self: flex-start;
}
.corr-btn-calificar:disabled {
  opacity: 0.5;
}

/* ═══════════════════════════════════════════════════════════════════════════
   Galería de trabajos destacados [imagenes_completadas]
   ═══════════════════════════════════════════════════════════════════════════ */
.ic-grid {
  display: grid;
  gap: 10px;
}
.ic-item {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  aspect-ratio: 1;
}
.ic-imagen {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.ic-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 10px;
  background: linear-gradient(transparent, rgba(0,0,0,0.7));
  display: flex;
  align-items: center;
  gap: 8px;
}
.ic-avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  object-fit: cover;
}
.ic-nombre {
  color: #fff;
  font-size: 13px;
  font-weight: 600;
}