body {
    font-family: Arial, sans-serif;
    margin: 0;
    background-image: url('patron.jpg');
    background-repeat: repeat;
    background-size: 500px 500px;
    min-height: 100vh;
    padding-top: 40px;
    padding-bottom: 40px;
}


.menu {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: #ffffff;
    padding: 20px 40px;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    max-width: 400px;
    margin: 0 auto;
}

.menu a {
    text-decoration: none;
    color: white;
    background-color: #007bff;
    padding: 10px 20px;
    margin: 10px 0;
    border-radius: 8px;
    transition: background-color 0.3s ease;
}

.menu a:hover {
    background-color: #0056b3;
}

form {
    display: flex;
    flex-direction: column;
    gap: 15px;
    width: 100%;
    margin: 0 auto;
    padding-bottom: 10px;
}

form label {
    font-weight: bold;
}

form input, form select, form textarea, form button {
    padding: 10px;
    font-size: 16px;
    border: 1px solid #ccc;
    border-radius: 8px;
}

form button {
    background-color: #123bff;
    color: white;
    cursor: pointer;
    border: none;
    transition: background-color 0.3s ease;
}

form button:hover {
    background-color: #0056b3;
}

.fecha-container {
    display: flex;
    gap: 10px;
    align-items: center;
}

.fecha-container label {
    margin-right: 5px;
}

.fecha-container {
    display: flex;
    gap: 10px;
    align-items: center;
}

/* Estilo mejorado para el campo de concepto */
form textarea {
    width: 100%;
    min-height: 100px; /* Puedes ajustar este valor */
    resize: vertical; /* Permite redimensionar solo en la dirección vertical */
    box-sizing: border-box; /* Asegura que el padding no se desborde */
}

.logo {
    width: 150px;
    max-width: 100%;
    height: auto;
    object-fit: contain;
    display: block;
}

.titulo {
    font-size: 24px;
    color: #333;
    font-weight: bold;
}
.tabla-container {
    width: 100%;
    overflow-x: auto;
}
/* Form enhancements */
.form-control:read-only {
    background-color: #f8f9fa;
    cursor: not-allowed;
}

/* Character counter */
#contador {
    font-size: 0.875rem;
    float: right;
}

/* Button icons */
.btn i {
    margin-right: 0.5rem;
}

/* Responsive adjustments */
@media (max-width: 576px) {
    .card {
        border: none;
        box-shadow: none;
    }
}
.alert {
    transition: all 0.3s ease;
}

.was-validated .form-control:invalid,
.was-validated .form-select:invalid {
    border-color: #dc3545;
    padding-right: calc(1.5em + 0.75rem);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' width='12' height='12' fill='none' stroke='%23dc3545'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath stroke-linejoin='round' d='M5.8 3.6h.4L6 6.5z'/%3e%3ccircle cx='6' cy='8.2' r='.6' fill='%23dc3545' stroke='none'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.1875rem) center;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
}

.was-validated .form-control:invalid:focus,
.was-validated .form-select:invalid:focus {
    border-color: #dc3545;
    box-shadow: 0 0 0 0.25rem rgba(220, 53, 69, 0.25);
}

.invalid-feedback {
    display: none;
    width: 100%;
    margin-top: 0.25rem;
    font-size: 0.875em;
    color: #dc3545;
}

.was-validated .form-control:invalid ~ .invalid-feedback,
.was-validated .form-select:invalid ~ .invalid-feedback {
    display: block;
}