/* ログインページ専用スタイル */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 50%, #60a5fa 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-container {
    width: 100%;
    max-width: 800px;
    display: flex;
    justify-content: center;
}

.login-box {
    background: white;
    border-radius: 15px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    overflow: hidden;
    width: 100%;
    max-width: 600px;
}

.login-header {
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 50%, #60a5fa 100%);
    color: white;
    padding: 40px 30px;
    text-align: center;
}

.login-header h1 {
    font-size: 2rem;
    margin-bottom: 10px;
    font-weight: 600;
}

.login-header h1 i {
    margin-right: 10px;
}

.login-header p {
    font-size: 1rem;
    opacity: 0.9;
}

.login-content {
    padding: 40px 30px;
}

.google-login-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 15px 20px;
    background-color: #3b82f6;
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    transition: all 0.3s ease;
    margin-bottom: 30px;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.google-login-btn:hover {
    background-color: #2563eb;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

.google-login-btn i {
    margin-right: 10px;
    font-size: 1.2rem;
}

.login-info {
    margin-top: 30px;
}

.login-info h3 {
    color: #333;
    margin-bottom: 20px;
    font-size: 1.3rem;
    text-align: center;
    font-weight: 600;
}

.service-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 20px;
}

.service-category {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    border-left: 4px solid #667eea;
}

.service-category h4 {
    color: #333;
    margin-bottom: 15px;
    font-size: 1.1rem;
    font-weight: 600;
}

.service-category ul {
    list-style: none;
}

.service-category li {
    padding: 5px 0;
    color: #666;
    font-size: 0.9rem;
    position: relative;
    padding-left: 15px;
}

.service-category li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #667eea;
    font-weight: bold;
}

.login-footer {
    background: #f8f9fa;
    padding: 20px 30px;
    text-align: center;
    border-top: 1px solid #e9ecef;
}

.login-footer p {
    color: #666;
    font-size: 0.9rem;
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
    .login-header {
        padding: 30px 20px;
    }
    
    .login-header h1 {
        font-size: 1.6rem;
    }
    
    .login-content {
        padding: 30px 20px;
    }
    
    .service-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .service-category {
        padding: 15px;
    }
    
    .login-footer {
        padding: 15px 20px;
    }
}

@media (max-width: 480px) {
    body {
        padding: 10px;
    }
    
    .login-header {
        padding: 25px 15px;
    }
    
    .login-header h1 {
        font-size: 1.4rem;
    }
    
    .login-content {
        padding: 25px 15px;
    }
    
    .twitter-login-btn {
        padding: 12px 15px;
        font-size: 1rem;
    }
    
    .service-category {
        padding: 12px;
    }
    
    .login-footer {
        padding: 12px 15px;
    }
}

/* アニメーション */
@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-box {
    animation: slideInUp 0.6s ease-out;
}

.google-login-btn {
    animation: slideInUp 0.8s ease-out;
}

.service-category {
    animation: slideInUp 1s ease-out;
}

.service-category:nth-child(2) {
    animation-delay: 0.1s;
}

/* ホバーエフェクト */
.service-category:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}