:root {
    --primary-color: #003366; /* Azul oscuro */
    --secondary-color: #f4f4f4; /* Gris claro */
    --accent-color: #FFD700;  /* Amarillo */
    --success-color: #28a745; /* Verde */
    --error-color: #dc3545; /* Rojo */
    --text-color-light: #FFFFFF; /* Blanco */
    --text-color-dark: #333333;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    margin: 0;
    background-color: var(--secondary-color);
    color: var(--text-color-dark);
    line-height: 1.6;
}

header {
    background-color: var(--primary-color);
    color: var(--text-color-light);
    padding: 1.5rem;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

h1 {
    margin: 0;
    font-size: 2rem;
}

main {
    padding: 2rem;
    max-width: 800px;
    margin: 2rem auto;
}

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

.form-container h2 {
    margin-top: 0;
    color: var(--primary-color);
    border-bottom: 2px solid var(--secondary-color);
    padding-bottom: 0.5rem;
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: bold;
    color: #555;
}

.form-group input {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box; /* Importante para que el padding no afecte el ancho total */
    transition: border-color 0.3s;
}

.form-group input:focus {
    border-color: var(--primary-color);
    outline: none;
}

.btn-submit {
    background-color: var(--accent-color);
    color: var(--text-color-dark);
    font-weight: bold;
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.3s;
    display: block;
    width: 100%;
}

.btn-submit:hover {
    background-color: #e6c300; /* Un amarillo un poco más oscuro */
}

.success-message {
    background-color: var(--success-color);
    color: var(--text-color-light);
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1.5rem;
    text-align: center;
}

footer {
    background-color: var(--primary-color);
    color: var(--text-color-light);
    text-align: center;
    padding: 1rem;
    position: relative; /* Cambiado de fixed para que no se superponga */
    bottom: 0;
    width: 100%;
    margin-top: 2rem;
}