ダイアログボックス：カラフルアニメーション｜Dialog Box: Colorful Animation

2025年7月24日

🎨

Animated Colorful Dialog

This dialog features vibrant colors and smooth animations. The design changes colors dynamically and includes playful interactive elements.

HTML

<div id="dialog-container">
    <button id="dialog-btn">Animated Colorful<br>Dialog</button>     
</div>

<!-- Dialog Window -->
<div id="dialog" class="dialog">
    <div class="dialog-content">
        <div class="colorful-header">
            <div class="colorful-icon">🎨</div>
            <span>Animated Colorful Dialog</span>
        </div>
        <div class="colorful-body">
            <p>This dialog features vibrant colors and smooth animations. The design changes colors dynamically and includes playful interactive elements.</p>
        </div>
        <div class="colorful-footer">
            <button class="colorful-btn-secondary">Skip</button>
            <button class="colorful-btn-primary">Continue</button>
        </div>
    </div>
</div>

CSS

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ダイアログコンテナ */
#dialog-container {
    text-align: center;
}

/* ダイアログボタン */
#dialog-btn {
    background-color: #007bff;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s ease;
    min-width: 200px;
    min-height: 60px;
    display: inline-block;
    text-align: center;
    line-height: 1.4;
    vertical-align: middle;
}

#dialog-btn:hover {
    background-color: #0056b3;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 123, 255, 0.3);
}

/* ダイアログオーバーレイ */
.dialog {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.3s;
}

/* ダイアログコンテンツ */
.dialog-content {
    width: 80%;
    max-width: 500px;
    margin-top: 8%;
    margin-left: auto;
    margin-right: auto;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 20px;
    padding: 0;
    box-shadow: 
        0 20px 40px rgba(102, 126, 234, 0.3),
        0 0 0 1px rgba(255, 255, 255, 0.1);
    animation: colorfulSlideIn 0.6s ease-out;
    overflow: hidden;
    position: relative;
}

.dialog-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, 
        rgba(255, 255, 255, 0.1) 0%, 
        rgba(255, 255, 255, 0.05) 50%, 
        rgba(255, 255, 255, 0.1) 100%);
    animation: colorShift 4s ease-in-out infinite;
    pointer-events: none;
}

/* カラフルヘッダー */
.colorful-header {
    background: linear-gradient(135deg, #ff6b6b, #4ecdc4);
    padding: 20px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.colorful-header::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, 
        transparent 30%, 
        rgba(255, 255, 255, 0.2) 50%, 
        transparent 70%);
    animation: shimmer 3s infinite;
    pointer-events: none;
}

.colorful-icon {
    font-size: 2.5em;
    margin-bottom: 10px;
    animation: iconBounce 2s ease-in-out infinite;
    display: block;
}

.colorful-header span {
    color: white;
    font-size: 1.5em;
    font-weight: 700;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    position: relative;
    z-index: 1;
}

/* カラフルボディ */
.colorful-body {
    padding: 25px;
    background: rgba(255, 255, 255, 0.95);
    position: relative;
}

.colorful-body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #ff6b6b, #4ecdc4, #45b7d1, #96ceb4, #feca57);
    animation: rainbowMove 3s linear infinite;
}

.colorful-body p {
    color: #333;
    font-size: 1.1em;
    line-height: 1.6;
    margin: 0;
    text-align: center;
}

/* カラフルフッター */
.colorful-footer {
    padding: 20px;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: center;
    gap: 15px;
    backdrop-filter: blur(10px);
}

/* ボタンスタイル */
.colorful-btn-secondary {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 1em;
    font-weight: 600;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.colorful-btn-secondary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

.colorful-btn-secondary:hover::before {
    left: 100%;
}

.colorful-btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.4);
}

.colorful-btn-primary {
    background: linear-gradient(135deg, #ff6b6b, #4ecdc4);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 1em;
    font-weight: 600;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    animation: pulse 2s infinite;
}

.colorful-btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

.colorful-btn-primary:hover::before {
    left: 100%;
}

.colorful-btn-primary:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 10px 25px rgba(255, 107, 107, 0.5);
}

/* ======================================== アニメーション ======================================== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes colorfulSlideIn {
    0% {
        transform: translateY(-100px) scale(0.8);
        opacity: 0;
    }
    50% {
        transform: translateY(-20px) scale(0.95);
        opacity: 0.8;
    }
    100% {
        transform: translateY(0) scale(1);
        opacity: 1;
    }
}

@keyframes colorShift {
    0%, 100% {
        background: linear-gradient(45deg, 
            rgba(255, 255, 255, 0.1) 0%, 
            rgba(255, 255, 255, 0.05) 50%, 
            rgba(255, 255, 255, 0.1) 100%);
    }
    25% {
        background: linear-gradient(45deg, 
            rgba(255, 182, 193, 0.1) 0%, 
            rgba(255, 255, 255, 0.05) 50%, 
            rgba(255, 182, 193, 0.1) 100%);
    }
    50% {
        background: linear-gradient(45deg, 
            rgba(173, 216, 230, 0.1) 0%, 
            rgba(255, 255, 255, 0.05) 50%, 
            rgba(173, 216, 230, 0.1) 100%);
    }
    75% {
        background: linear-gradient(45deg, 
            rgba(144, 238, 144, 0.1) 0%, 
            rgba(255, 255, 255, 0.05) 50%, 
            rgba(144, 238, 144, 0.1) 100%);
    }
}

@keyframes shimmer {
    0% {
        transform: translateX(-100%) translateY(-100%) rotate(45deg);
    }
    100% {
        transform: translateX(100%) translateY(100%) rotate(45deg);
    }
}

@keyframes iconBounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

@keyframes rainbowMove {
    0% {
        background-position: 0% 50%;
    }
    100% {
        background-position: 200% 50%;
    }
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(255, 107, 107, 0.7);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(255, 107, 107, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(255, 107, 107, 0);
    }
}

/* ======================================== レスポンシブ対応 ======================================== */
@media (max-width: 768px) {
    .dialog-content {
        width: 90%;
        margin: 15% auto;
        padding: 15px;
    }
    
    .colorful-header span {
        font-size: 16px;
    }
    
    .colorful-body p {
        font-size: 14px;
    }
}

JavaScript

document.addEventListener('DOMContentLoaded', function() {
    // ダイアログボタンのイベントリスナーを設定
    const dialogBtn = document.getElementById('dialog-btn');
    const dialog = document.getElementById('dialog');
    
    dialogBtn.addEventListener('click', function() {
        dialog.style.display = 'block';
        // スクロールを無効化
        document.body.style.overflow = 'hidden';
    });
    
    // 閉じるボタンのイベントリスナーを設定
    const closeButtons = document.querySelectorAll('.colorful-btn-secondary, .colorful-btn-primary');
    
    closeButtons.forEach(button => {
        button.addEventListener('click', function() {
            dialog.style.display = 'none';
            // スクロールを有効化
            document.body.style.overflow = 'auto';
        });
    });
});

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