body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f4f6f9;
    color: #333;
    margin: 0;
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
}

.container {
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 800px;
}

h1 {
    text-align: center;
    color: #2c3e50;
    margin-bottom: 20px;
}

.table-list {
    margin-bottom: 20px;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    overflow: hidden;
}

.table-item {
    display: flex;
    align-items: center;
    padding: 12px 15px;
    border-bottom: 1px solid #f0f0f0;
    transition: background-color 0.2s;
}

.table-item:last-child {
    border-bottom: none;
}

.table-item:hover {
    background-color: #f9f9f9;
}

.table-item input[type="checkbox"] {
    margin-right: 15px;
    transform: scale(1.2);
    cursor: pointer;
}

.table-item label {
    flex-grow: 1;
    cursor: pointer;
    font-size: 16px;
}

.actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 20px;
}

.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: background-color 0.3s;
}

.btn-primary {
    background-color: #3498db;
    color: white;
}

.btn-primary:hover {
    background-color: #2980b9;
}

.select-all {
    color: #7f8c8d;
    cursor: pointer;
    font-size: 14px;
}

.select-all:hover {
    color: #2c3e50;
    text-decoration: underline;
}