body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    background-color: #8a8787;
    margin: 0;
    padding: 0;
}

header {
    background-color: #333;
    color: white;
    padding: 1rem 0;
    text-align: center;
}

.formulario {
    max-width: 700px;
    margin: 0 auto;
    background: #fff;
    padding: 2.5rem 2rem;
    border-radius: 15px; 
    box-shadow: rgba(0, 0, 0, 0.25) 0 8px 15px; 
    border: 2px solid #1A1A1A; 
    will-change: transform;
}

form input, form textarea, form select {
    width: 100%;
    border: none;
    border-bottom: 1px solid #838282;
    padding: 0.4rem 0;
    font-size: 1rem;
    background: transparent;
    transition: border-color 0.2s;
}

form button[type="submit"] {
    appearance: none;
    background-color: transparent;
    border: 2px solid #1A1A1A;
    border-radius: 15px;
    box-sizing: border-box;
    color: #3B3B3B;
    cursor: pointer;
    display: inline-block;
    font-family: Roobert, -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
    font-size: 16px;
    font-weight: 600;
    line-height: normal;
    margin: 0;
    min-height: 60px;
    min-width: 0;
    outline: none;
    padding: 16px 24px;
    text-align: center;
    text-decoration: none;
    transition: all 300ms cubic-bezier(.23, 1, 0.32, 1);
    user-select: none;
    -webkit-user-select: none;
    touch-action: manipulation;
    width: 100%;
    will-change: transform;
}

.form button:disabled {
    pointer-events: none;
}

.form button:hover {
    color: #fff;
    background-color: #1A1A1A;
    box-shadow: rgba(0, 0, 0, 0.25) 0 8px 15px;
    transform: translateY(-2px);
}

.form button:active {
    box-shadow: none;
    transform: translateY(0);
}

form button[type="submit"]:hover {
    background: #333;
}