Accordion / 012 — グレーアウト

デザイン見本

Muted gray color scheme
Subtle transparency effects
Professional and calm

落ち着いたグレーの配色を使用したデザイン。控えめな透過効果と柔らかなアニメーションが、プロフェッショナルで静謐な印象を与えます。

実装コード

HTML

<div class="container">
    <div class="btn-box">
        <button data-default-text="Grayed Out Accordion" data-open-text="Close">Grayed Out Accordion</button>
    </div>
    <div class="content">
        <ul>
            <li>Muted gray color scheme</li>
            <li>Subtle transparency effects</li>
            <li>Professional and calm</li>
        </ul>
    </div>
</div>

CSS

/* アニメーション定義 */
@keyframes acc12-grayFadeIn {
    0% {
        opacity: 0;
        transform: translateY(-8px)
    }
    100% {
        opacity: 1;
        transform: translateY(0)
    }
}

.container {
    width: 100%;
    margin: 4px;
    position: relative;
}

.container .btn-box button {
    width: 100%;
    padding: 14px 20px;
    background: rgba(128, 128, 128, 0.1);
    border: 1px solid rgba(128, 128, 128, 0.3);
    font-size: 14px;
    font-weight: 500;
    color: #666;
    cursor: pointer;
    transition: all 0.4s ease;
    text-align: left;
    position: relative;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
}

.container .btn-box button::after {
    content: '▼';
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: #999;
    font-size: 11px;
    opacity: 0.7;
    transition: all 0.3s;
}

.container .btn-box button:hover {
    background: rgba(128, 128, 128, 0.15);
    color: #555;
}

.container .content {
    max-height: 0;
    overflow: hidden;
    transition: all 0.5s ease;
    background: rgba(128, 128, 128, 0.05);
    border: 1px solid rgba(128, 128, 128, 0.2);
    border-top: none;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    margin-top: -1px;
}

.container .content.appear {
    max-height: 200px;
    animation: acc12-grayFadeIn 0.4s ease;
}

.container:has(.content.appear) .btn-box button::after {
    transform: translateY(-50%) rotate(180deg);
    opacity: 1;
}

.container .content ul {
    list-style: none;
    padding: 14px 20px;
    margin: 0;
}

.container .content li {
    padding: 8px 0;
    color: #777;
    border-bottom: 1px solid rgba(128, 128, 128, 0.1);
    font-size: 13px;
}

.container .content li:last-child {
    border-bottom: none;
}

document.addEventListener("DOMContentLoaded", () => {
    document.querySelectorAll('.container').forEach(container => {
        const button = container.querySelector('.btn-box button');
        // .more または .content を取得
        const content = container.querySelector('.more, .content');
        
        if (button && content) {
            button.addEventListener('click', function() {
                content.classList.toggle('appear');
                
                // ボタンテキストの切り替え
                if (content.classList.contains('appear')) {
                    this.textContent = this.dataset.openText || 'Close';
                } else {
                    this.textContent = this.dataset.defaultText;
                }
            });
        }
    });
});