.button,
button {
    color: var(--button-text, #000000);
    background-color: var(--button-background, transparent);
    border: var(--button-border, none);
    transition: filter 0.2s ease, transform 0.2s ease;
}

.button:hover,
button:hover {
    filter: brightness(90%);
    transform: translateY(-1px);
}

.icon {
    filter: var(--icon-filter, none);
}

.button.button-default {
    --button-text: #ffffff;
    --button-background: #2457F5;
    --button-border: 1px solid #ffffff;
}

.button.button-pink-linear {
    --button-text: #ffffff;
    --button-background: linear-gradient(135deg, #ff9a9e, #fad0c4);
    --button-border: 1px solid #ffffff;

    background: var(--button-background);
    border: var(--button-border);
    color: var(--button-text);
    position: relative;
    overflow: hidden;
}

.button.button-orange-linear {
    --button-text: #ffffff;
    --button-background: linear-gradient(135deg, #ff7e5f, #feb47b); /* 橘色漸層 */

    background: var(--button-background);
    border: var(--button-border);
    color: var(--button-text);
    position: relative;
    overflow: hidden;
}

.button.button-yellow-linear {
    --button-text: #ffffff;
    --button-background: linear-gradient(135deg, #fff176, #ffcc80);
    background: var(--button-background);
    border: var(--button-border);
    color: var(--button-text);
    position: relative;
    overflow: hidden;
}

.button.button-green-linear {
    --button-text: #ffffff;
    --button-background: linear-gradient(135deg, #a5d6a7, #c5e1a5);
    background: var(--button-background);
    border: var(--button-border);
    color: var(--button-text);
    position: relative;
    overflow: hidden;
}

.button.button-blue-linear {
    --button-text: #ffffff;
    --button-background: linear-gradient(135deg, #90caf9, #81d4fa);
    background: var(--button-background);
    border: var(--button-border);
    color: var(--button-text);
    position: relative;
    overflow: hidden;
}

.button.button-pupple-linear {
    --button-text: #ffffff;
    --button-background: linear-gradient(135deg, #ce93d8, #b39ddb);
    background: var(--button-background);
    border: var(--button-border);
    color: var(--button-text);
    position: relative;
    overflow: hidden;
}

.button.button-disabled {
    cursor: not-allowed; /* 禁用狀態下的游標 */
}

.button.button-bubble .bubbles {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    overflow: hidden;
    pointer-events: none;
}

.button.button-bubble .bubble {
    position: absolute;
    bottom: 10px;
    width: 10px;
    height: 10px;
    background-color: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    opacity: 0;
    animation: bubbleRandomMove 4s linear infinite;
}

@keyframes bubbleRandomMove {
    0% {
        transform: translate(0, 0);
        opacity: 0;
    }

    20% {
        opacity: 1;
    }

    100% {
        opacity: 0;
    }
}