.favicon-container {
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.input-group {
    margin-bottom: 20px;
    text-align: center;
}

.favicon-container .input-group .icon-generator-upload-label {
    display: inline-block;
    padding: 12px 24px;
    background: #228be6;
    color: #fff;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    text-align: center;
}

.favicon-container .input-group .icon-generator-upload-label:hover {
    background: #1c7ed6;
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(34, 139, 230, 0.2);
}

.favicon-container .input-group .icon-generator-upload-label i {
    margin-right: 8px;
    color: #fff;
}

.favicon-options {
    margin: 20px 0;
}

.checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
    margin-bottom: 20px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: #f8f9fa;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    min-width: 80px;
    justify-content: center;
}

.checkbox-group label:hover {
    background: #e9ecef;
}

.preview-section {
    margin: 30px 0;
}

.preview-section h3 {
    margin-bottom: 20px;
    color: #495057;
    text-align: center;
}

.preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 20px;
    justify-items: center;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 8px;
    max-width: 800px;
    margin: 0 auto;
}

.preview-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 15px;
    background: white;
    border-radius: 6px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    width: 100%;
    max-width: 150px;
}

.preview-item img {
    border: 1px solid #dee2e6;
    border-radius: 4px;
    max-width: 100%;
    height: auto;
}

.preview-item span {
    font-size: 0.9em;
    color: #495057;
}

.btn-primary {
    display: block;
    width: 200px;
    margin: 20px auto;
    padding: 12px 24px;
    background: #228be6;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary:hover:not(:disabled) {
    background: #1c7ed6;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(34, 139, 230, 0.2);
}

.btn-primary:disabled {
    background: #adb5bd;
    cursor: not-allowed;
}

/* 반응형 스타일 */
@media (max-width: 768px) {
    .favicon-container {
        padding: 15px;
    }

    .favicon-container .input-group .icon-generator-upload-label {
        padding: 10px 20px;
        font-size: 0.95em;
        width: 80%;
        max-width: 300px;
    }

    .checkbox-group {
        gap: 10px;
        padding: 0 10px;
    }

    .checkbox-group label {
        padding: 6px 12px;
        font-size: 0.9em;
        min-width: 70px;
    }

    .preview-grid {
        grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
        gap: 15px;
        padding: 15px;
    }

    .preview-item {
        padding: 10px;
        max-width: 120px;
    }
}

@media (max-width: 480px) {
    .favicon-container {
        padding: 10px;
    }

    .favicon-container .input-group .icon-generator-upload-label {
        padding: 8px 16px;
        font-size: 0.9em;
        width: 90%;
    }

    .preview-grid {
        grid-template-columns: repeat(auto-fit, minmax(60px, 1fr));
        gap: 10px;
        padding: 10px;
    }

    .checkbox-group {
        gap: 8px;
    }

    .checkbox-group label {
        padding: 5px 10px;
        font-size: 0.85em;
        min-width: 60px;
    }

    .btn-primary {
        width: 100%;
        margin: 15px auto;
    }

    .preview-item {
        max-width: 100px;
    }
}