/* =========================
  Loading
========================= */
body.is-loading #page-content {
    visibility: hidden;
}

/* ローディング画面：画面全体を覆って中央配置 */
#page-loader {
    position: fixed;
    inset: 0;
    z-index: 9999;
  
    display: flex;
    align-items: center;
    justify-content: center;
  
    background: #000; /* 背景色は任意 */
}
  
/* スピナー（imgでもsvgでもdivでもOK） */
#page-loader .spinner,
#page-loader img,
#page-loader svg {
    width: 56px;   /* 任意 */
    height: 56px;  /* 任意 */
}


/* 読み込み完了後 */
body.is-loaded #page-loader {
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.6s ease;
}

body.is-loaded #page-content {
    visibility: visible;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 3px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}