/* 全体のスタイル */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ヘッダー */
header {
    background: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
    color: white;
    padding: 60px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.header-content {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

header::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 60%);
    opacity: 0.6;
    z-index: 0;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    letter-spacing: 1px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

header h1 i {
    margin-right: 15px;
    animation: pulse 2s infinite alternate;
}

.subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
    font-weight: 300;
    letter-spacing: 0.5px;
}

/* メインコンテンツ */
main {
    flex: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
}

.intro {
    text-align: center;
    margin-bottom: 40px;
}

.intro h2 {
    font-size: 2rem;
    color: #2c3e50;
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.intro h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 3px;
    background: linear-gradient(to right, #6a11cb, #2575fc);
    border-radius: 3px;
}

.intro p {
    max-width: 700px;
    margin: 0 auto;
    color: #555;
    font-size: 1.1rem;
}

/* ツールグリッド */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.tool-card {
    background-color: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.tool-icon {
    background: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
    color: white;
    font-size: 2.5rem;
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tool-info {
    padding: 25px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.tool-info h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: #2c3e50;
}

.tool-info p {
    color: #555;
    margin-bottom: 20px;
    flex: 1;
}

.tool-features {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
}

.tool-features span {
    background-color: #f0f7ff;
    color: #0366d6;
    padding: 5px 10px;
    border-radius: 20px;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
}

.tool-features span i {
    margin-right: 5px;
}

.tool-button {
    background: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 30px;
    cursor: pointer;
    font-weight: 500;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s ease;
    box-shadow: 0 4px 10px rgba(37, 117, 252, 0.3);
}

.tool-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(37, 117, 252, 0.4);
}

/* Coming Soon スタイル */
.coming-soon .tool-icon {
    background: linear-gradient(135deg, #808080 0%, #a9a9a9 100%);
    opacity: 0.7;
}

.coming-soon {
    opacity: 0.8;
}

.tool-button.disabled {
    background: linear-gradient(135deg, #808080 0%, #a9a9a9 100%);
    cursor: not-allowed;
    box-shadow: none;
}

.tool-button.disabled:hover {
    transform: none;
    box-shadow: none;
}

/* フッター */
footer {
    background-color: #2c3e50;
    color: white;
    text-align: center;
    padding: 20px;
    margin-top: 40px;
}

footer p {
    font-size: 0.9rem;
}

footer i.fa-heart {
    color: #e74c3c;
    animation: pulse 1.5s infinite;
}

/* アニメーション */
@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
    header {
        padding: 40px 0;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .tools-grid {
        grid-template-columns: 1fr;
    }
    
    .tool-card {
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.8rem;
    }
    
    .tool-icon {
        height: 100px;
        font-size: 2rem;
    }
    
    .tool-info {
        padding: 20px;
    }
    
    .tool-info h3 {
        font-size: 1.3rem;
    }
}