* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: #f4f6f9;
    color: #333;
    line-height: 1.6;
    padding: 20px 10px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background: #ffffff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

header {
    text-align: center;
    margin-bottom: 30px;
}

header h1 {
    color: #0056b3;
    margin-bottom: 10px;
    font-size: 1.8rem;
}

header p {
    color: #666;
    font-size: 0.95rem;
}

fieldset {
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 25px;
    background-color: #fafafa;
}

legend {
    font-weight: bold;
    color: #0056b3;
    padding: 0 10px;
    font-size: 1.1rem;
}

.form-group {
    margin-bottom: 18px;
}

label {
    display: block;
    font-weight: 600;
    margin-bottom: 6px;
    font-size: 0.9rem;
    color: #444;
}

input[type="text"],
input[type="email"],
input[type="tel"],
select,
textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 6px;
    font-size: 0.95rem;
    transition: border-color 0.3s ease;
}

input:focus,
select:focus,
textarea:focus {
    border-color: #0056b3;
    outline: none;
    background-color: #fff;
}

button[type="submit"] {
    width: 100%;
    background-color: #28a745;
    color: white;
    border: none;
    padding: 15px;
    font-size: 1.1rem;
    font-weight: bold;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

button[type="submit"]:hover {
    background-color: #218838;
}

.oculto {
    display: none;
}

.exito {
    margin-top: 20px;
    padding: 15px;
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
    border-radius: 6px;
    text-align: center;
}

.error {
    margin-top: 20px;
    padding: 15px;
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
    border-radius: 6px;
    text-align: center;
}

/* Adaptación para pantallas de escritorio */
@media (min-width: 768px) {
    .container {
        padding: 40px;
    }
    header h1 {
        font-size: 2.2rem;
    }
}