/* 114.9.25 救災懸浮按鈕 */
/* 懸浮按鈕容器 */
.floating-donation-btn {
    position: fixed;
    right: 30px;
    bottom: 30px;
    z-index: 99;
    cursor: pointer;
    user-select: none;
    width: 5rem;
    height: 5rem;
}

/* 主按鈕 */
.donation-button {
    width: 5rem;
    height: 5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow:
        0 8px 25px rgba(255, 35, 10, 0.3),
        0 4px 10px rgba(0, 0, 0, 0.2);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.donation-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-w10);
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.donation-button:hover::before {
    opacity: 1;
}

.donation-button:hover {
    transform: translateY(-2px);
    box-shadow:
        0 12px 35px rgba(255, 35, 10, 0.4),
        0 8px 15px rgba(0, 0, 0, 0.3);
}

.donation-button:active {
    transform: translateY(0);
    box-shadow:
        0 6px 20px rgba(255, 35, 10, 0.3),
        0 2px 8px rgba(0, 0, 0, 0.2);
}


/* 發光特效 */
.glow-effect {
    position: absolute;
    top: 0;
    left: 0;
    width: 5rem;
    height: 5rem;
    border-radius: 50%;
    background: radial-gradient(circle, transparent 40%, var(--color-btn) 70%, transparent 100%);
    animation: glow 2s ease-in-out infinite alternate;
    opacity: 0.3;
}

@keyframes glow {
    0% {
        box-shadow:
            0 0 10px rgba(255, 35, 10, 0.2),
            0 0 20px rgba(255, 35, 10, 0.1),
            0 0 30px rgba(255, 35, 10, 0.05);
        opacity: 0.3;
    }

    100% {
        box-shadow:
            0 0 20px rgba(255, 35, 10, 0.4),
            0 0 40px rgba(255, 35, 10, 0.2),
            0 0 60px rgba(255, 35, 10, 0.1);
        opacity: 0.6;
    }
}

/* 文字提示 */
.donation-tooltip {
    position: absolute;
    right: 75px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--color-nav);
    color: var(--color-w100);
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 12px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    border: 1px solid var(--color-w10);
}

.donation-tooltip::after {
    content: '';
    position: absolute;
    left: 100%;
    top: 50%;
    transform: translateY(-50%);
    border: 6px solid transparent;
    border-left-color: var(--color-nav);
}

.floating-donation-btn:hover .donation-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateY(-50%) translateX(-5px);
}

/* 響應式設計 */
@media (max-width: 768px) {
    .floating-donation-btn {
        right: 20px;
        bottom: 90px;
        /* width: 55px; */
        /* height: 55px; */
    }

    .donation-button {
        /* width: 55px; */
        /* height: 55px; */
    }


    .glow-effect {
        /* width: 55px; */
        /* height: 55px; */
    }
}