body {
    font-family: sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
    color: #333;
    background-color: #ebecf8;
}
        
header {
    height: 50px;
    background-color: rgba(75, 79, 195, 0.798);
    color: white;
    padding: 20px;
    display: flex;
    align-items: center;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

main {
    padding: 20px;
    max-width: 1200px;
    margin: 0 auto;
}
        
form {
    background-color: white;
    padding: 15px;
    border-radius: 12px;
    margin-bottom: 20px;
    max-width: 400px;
}

form h2 {
    margin-top: 0;
}

.form-row {
    display: flex;
    gap: 10px;
}

form input[type="text"] {
    flex: 1;
    padding: 10px 12px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 1em;
    min-width: 0;
}

form input[type="submit"] {
    background-color: rgba(75, 79, 195, 0.798);
    color: white;
    border: none;
    padding: 10px 15px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1em;
    font-weight: 500;
    white-space: nowrap;
}
        
#task {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}
        
.task-item h3 {
    margin-top: 0;
    padding: 10px 15px;
    border-radius: 10px; 
    font-size: 1.1em;
    display: inline-block;
}
        
.task-item ul {
    list-style-type: none;
    padding-left: 0;
    margin: 0;
}
        
.task-item li {
    padding: 12px; 
    margin-bottom: 10px;
    border-radius: 10px;
    background-color: white;
}
        
.task-item li:last-child {
    margin-bottom: 0;
}
        
.task-item button {
    border: 1px solid #ddd;
    border-radius: 8px; 
    padding: 10px 15px; 
    cursor: pointer;
    margin-top: 15px;
    width: 100%;
    text-align: center;
    font-size: 1em; 
}
        
#backlog h3 {
    color: #a0a0a0; 
    background-color: rgba(200, 200, 200, 0.5); 
}

#backlog li {
    border-left: 6px solid rgba(200, 200, 200, 0.5);
}
        
#progress h3 {
    color: #4a86e8; 
    background-color: rgba(160, 185, 240, 0.5); 
}

#progress li {
    border-left: 6px solid rgba(160, 185, 240, 0.5);
}
        
        
#done h3 {
    color: #6aa84f; 
    background-color: rgba(180, 220, 150, 0.5); 
}
        
#done li {
    border-left: 6px solid rgba(180, 220, 150, 0.5);
}
        
#trash h3 {
    color: #e06666; 
    background-color: rgba(240, 160, 160, 0.5); 
}

#trash li {
    border-left: 6px solid rgba(240, 160, 160, 0.5);
}
        
        
#trash button {
    background-color: rgb(202, 57, 57);
    color: #ffffff;
}