.container {
    display: grid;
    grid-template-columns: 40% 60%;
    gap: 30px;
    padding: 20px;
    max-width: 1800px;
    margin: 0 auto;
}

.form-container {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.history-container {
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

th, td {
    border: 1px solid #ddd;
    padding: 12px 15px;
    text-align: left;
}

th {
    background-color: #f2f2f2;
    font-weight: 600;
}

tr:nth-child(even) {
    background-color: #f9f9f9;
}

tr:hover {
    background-color: #f1f1f1;
}

.form-group {
    display: flex;
    flex-direction: column;
    margin-bottom: 15px;
    width: 100%;
    box-sizing: border-box;
}

.form-group label {
    margin-bottom: 8px;
    font-weight: 500;
    color: #333;
}

input[type="text"],
input[type="number"],
input[type="date"],
input[type="month"],
select,
textarea {
    padding: 10px 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    width: 100%;
    font-size: 14px;
    transition: border-color 0.3s;
    box-sizing: border-box;
    max-width: 100%;
}

input:focus,
select:focus,
textarea:focus {
    border-color: #4CAF50;
    outline: none;
    box-shadow: 0 0 0 2px rgba(76, 175, 80, 0.2);
}

.alert {
    padding: 12px 15px;
    margin: 15px 0;
    border-radius: 4px;
    font-size: 14px;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

button[type="submit"] {
    background: #4CAF50;
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 15px;
    font-weight: 500;
    transition: background-color 0.3s;
    width: 100%;
    margin-top: 10px;
}

button[type="submit"]:hover {
    background: #45a049;
}

h2 {
    color: #2c3e50;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #eee;
}

@media (max-width: 1200px) {
    .container {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .form-container, .history-container {
        width: 100%;
    }
}