.gakkai-dashboard-card {
  margin-bottom: 1.5rem;
}

.absolute-center-y {
  top: 50% !important;
  transform: translateY(-50%) !important;
}

@media (min-width: 768px) {
  .sidebar .nav-item .nav-link {
    padding: 0.75rem;
  }
}

@media (min-width: 768px) {
  .sidebar .nav-item .nav-link i {
    min-width: 15px;
  }
}

.sidebar .nav-item .nav-link i {
  text-align: center;
}

.flex-1-1-auto {
  flex: 1 1 auto;
}

.sidebar .nav-item .collapse .collapse-inner .collapse-item,
.sidebar .nav-item .collapsing .collapse-inner .collapse-item {
  padding: 0.5rem 0.5rem;
}

.gakkai-table th,
.gakkai-table td {
  white-space: nowrap;
}

/* アップロード */
.gakkai-upload-area {
    margin: 0 auto;
    max-width: 80%;
    height: 200px;
    position: relative;
    border: 2px solid #000;
    background-color: #E6E6E6;
    text-align: center;
}

.gakkai-upload-area .gakkai-upload-area-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100%;
}

.gakkai-input-files {
    top: 0;
    left: 0;
    opacity: 0;
    position: absolute;
    width: 100%;
    height: 100%;
    cursor: pointer;
}

.gakkai-preview-area {
    margin: 0 auto;
    max-width: 80%;
}

.gakkai-preview-block {
    width: -moz-fit-content;
    width: fit-content;
    position: relative;
    padding-right: 10px;
}

.gakkai-preview-reset {
    position: absolute;
    top: 0;
    right: -5px;
}

/* クローズボタン */
.close-button {
    --close-btn-size: 25px;
    --close-btn-width: 100%;
    --close-btn-height: 3px;
    --close-btn-color: #ff0000;

    /* position: relative; */
    height: var(--close-btn-size);
    width: var(--close-btn-size);
    background-color: transparent;
    border-color: transparent;
    cursor: pointer;
}
.close-button:hover {
    .close-button__line {
        opacity: 0.7;
        transition: .3;
    }
}
.close-button__line {
    position: absolute;
    background: var(--close-btn-color);
}
.close-button__line:nth-child(1) {
    left: 0;
    top: 50%;
    transform: translate(0%, -50%) rotate(45deg);
    width: var(--close-btn-width);
    height: var(--close-btn-height);
}
.close-button__line:nth-child(2) {
    left: 50%;
    top: 0;
    transform: translate(-50%, 0%) rotate(45deg);
    width: var(--close-btn-height);
    height: var(--close-btn-width);
}

@media (min-width: 768px) {
    .gakkai-upload-area {
        max-width: 50%;
        height: 150px;
    }
    .gakkai-preview-area {
        max-width: 50%;
    }
}

/* ローディング */
.loading-overlay {
    background: rgba(0, 0, 0, .5);
    width: 100%;
    height: 100%;
    padding-top: 5%;
    padding-bottom: 5%;
}

.loading-inner {
    max-width: 500px;
    margin: 0 auto;
}