.flex_row {
  display: flex;
  flex-flow: row nowrap;
}

.flex_col, .C_btn_add, .C_icon_add, .C_icon_vis, .C_file_placeholder, .C_grid_item, .C_main {
  display: flex;
  flex-flow: column nowrap;
}

.fill, .C_btn_add, .C_svg_add, .C_icon_add {
  width: 100%;
  height: 100%;
}

.C_main {
  gap: 0.5rem;
  padding: 1rem;
  overflow: hidden;
  overflow-y: auto;
}

.C_grid {
  display: grid;
  gap: 0.5rem;
  grid-template-columns: repeat(auto-fill, minmax(10dvw, 1fr));
}
@media only screen and (orientation: portrait) {
  .C_grid {
    grid-template-columns: repeat(auto-fill, minmax(6rem, 1fr));
    gap: 0.5rem;
  }
}

.C_grid_item {
  cursor: pointer;
  position: relative;
}

.C_thumbnail_wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 1/1;
  border: 1px solid var(--color_5);
  border-radius: 0.5rem;
  overflow: hidden;
  background-color: var(--color_4);
  box-shadow: var(--box_shadow);
  transition: transform 0.2s ease-out, box-shadow 0.2s ease-out;
}
.C_thumbnail_wrapper:hover {
  box-shadow: var(--shadow_hover);
  transform: translateY(-0.1rem);
}

.C_thumbnail {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.C_file_placeholder {
  gap: 0.5rem;
  padding: 0.5rem;
  text-align: center;
}

.C_file_icon {
  width: 40%;
  height: 40%;
  max-width: 50px;
  max-height: 50px;
  fill: var(--color_5);
}

.C_icon_vis {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(0, 0, 0, 0.3);
}
.C_icon_add {
  display: flex;
  align-items: center;
  justify-content: center;
}

.C_svg_vis {
  width: 1.5rem;
  height: 1.5rem;
  fill: var(--color_text_light);
}
.C_svg_add {
  fill: var(--color_3);
}

.C_btn_add {
  border: 0.2rem solid var(--color_2);
  border-radius: 0.5rem;
}

.C_empty_state {
  padding: 2rem;
  text-align: center;
  color: var(--color_3);
  font-style: italic;
  width: 100%;
}