.courts-loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.55);
    z-index: 10050;
    display: flex;
    align-items: center;
    justify-content: center;
}
.courts-loading-overlay[hidden] {
    display: none;
}
.courts-loading-card {
    background: #fff;
    border-radius: 8px;
    padding: 28px 36px;
    text-align: center;
    max-width: 420px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}
.courts-loading-ball {
    width: 56px;
    height: 56px;
    margin: 0 auto 16px auto;
    border-radius: 50%;
    background: radial-gradient(circle at 35% 30%, #eaff66 0%, #ccff00 45%, #9db800 100%);
    animation: courts-ball-spin 1s linear infinite;
}
.courts-loading-ball svg {
    display: block;
    width: 100%;
    height: 100%;
}
@keyframes courts-ball-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}
.courts-loading-message {
    font-size: 16px;
    font-weight: bold;
    color: #333;
    margin-bottom: 8px;
}
.courts-loading-sub {
    font-size: 13px;
    color: #666;
}
@media (prefers-reduced-motion: reduce) {
    .courts-loading-ball {
        animation: none;
    }
}