body {
    font-family: Arial, sans-serif;
    background-color: #f9f9f9;
}

.header {
    background: linear-gradient(to right, #0a1a33, #1c2b4e);
    padding: 1rem;
    text-align: center;
    color: white;
}

.logo {
    max-width: 120px;
    margin: auto;
}

.form-container {
    padding: 1.5rem;
    max-width: 800px;
    margin: auto;
    background-color: #ffffff;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

canvas {
    width: 100%;
    height: 200px;
    border: 2px solid #002f86;
    background-color: #f0f0f0;
}

label {
    color: #002f86;
}

input,
select,
textarea {
    border: 1px solid #002f86;
    border-radius: 4px;
}

button.btn-primary {
    background-color: #002f86;
    border: none;
}

button.btn-danger {
    background-color: #ff4d4d;
    border: none;
}

.btn-back {
    background-color: #0a1a33;
    color: white;
    border: none;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.btn-back:hover {
    background-color: #1c2b4e;
    transform: scale(1.05);
}

/* Estilos para el modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal-content {
    background-color: #fff;
    margin: 15% auto;
    padding: 20px;
    border-radius: 8px;
    width: 300px;
    text-align: center;
}

/* Estilos para el loading */
.loading {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    justify-content: center;
    align-items: center;
}

.spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid #002f86;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}