.card-order-system-wrapper {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.card-order-system {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

/* Grid layout for cards */
.card-entries-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.card-entry {
    position: relative;
    background: #f8f9fa;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    display: flex;
    flex-direction: column;
    gap: 15px;
    height: 100%;
}

.remove-card {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 24px;
    height: 24px;
    border-radius: 12px;
    background: #dc3545;
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    line-height: 1;
    transition: background-color 0.2s;
    padding: 0;
}

.remove-card:hover {
    background: #c82333;
}

.remove-card:focus {
    outline: none;
    box-shadow: 0 0 0 2px rgba(220,53,69,0.4);
}

.form-group {
    margin: 0;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: #333;
}

.form-group input {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus {
    outline: none;
    border-color: #0066cc;
    box-shadow: 0 0 0 2px rgba(0,102,204,0.2);
}

.form-group input:invalid {
    border-color: #dc3545;
}

.form-group input:invalid:focus {
    box-shadow: 0 0 0 2px rgba(220,53,69,0.2);
}

.form-actions {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

.button {
    background: #0066cc;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.2s;
}

.button:hover {
    background: #0052a3;
}

.button:disabled {
    background: #ccc;
    cursor: not-allowed;
}

#addCard {
    background: #28a745;
}

#addCard:hover {
    background: #218838;
}

.error-message {
    color: #dc3545;
    padding: 10px;
    background: #f8d7da;
    border: 1px solid #f5c6cb;
    border-radius: 4px;
    margin-bottom: 20px;
}

.success-message {
    color: #28a745;
    padding: 10px;
    background: #d4edda;
    border: 1px solid #c3e6cb;
    border-radius: 4px;
    margin-bottom: 20px;
}

@media (max-width: 768px) {
    .card-order-system-wrapper {
        padding: 15px;
    }
    
    .card-entries-container {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .card-entry {
        padding: 15px;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .button {
        width: 100%;
    }
}