body {
    background: radial-gradient(circle at top, #1b1b1b, #000000);
    font-family: 'Segoe UI', Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    color: #ffffff;
}

/* CONTENEDOR */
.box {
    background: linear-gradient(160deg, #0b0b0b, #151515);
    padding: 45px 40px;
    border-radius: 22px;
    width: 420px;
    text-align: center;

    border: 1.5px solid rgba(212,175,55,0.35);

    box-shadow:
        0 0 50px rgba(212,175,55,0.18),
        inset 0 0 20px rgba(0,0,0,.9);
}

/* TITULO */
.box h2 {
    font-size: 32px;
    margin-bottom: 35px;
    font-weight: 700;
    letter-spacing: 1px;

    background: linear-gradient(135deg, #d4af37, #f5d76e, #c9a227);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* INPUTS */
.box input {
    width: 85%;
    padding: 16px;
    margin: 14px auto;
    display: block;

    background: #0a0a0a;
    border-radius: 14px;

    border: 1.8px solid rgba(212,175,55,0.5);

    color: white;
    font-size: 17px;
    font-weight: 500;
    text-align: center;

    transition: 0.25s;
}

.box input::placeholder {
    color: #cfcfcf;
    font-size: 16px;
}

.box input:focus {
    outline: none;
    border-color: #f5d76e;

    box-shadow:
        0 0 15px rgba(212,175,55,.5),
        inset 0 0 10px rgba(0,0,0,.8);
}

/* BOTÓN PREMIUM */
.box button {
    width: 85%;
    padding: 17px;
    margin-top: 28px;

    border-radius: 16px;
    border: none;

    background: linear-gradient(135deg, #c9a227, #f5d76e, #d4af37);

    color: #000;
    font-size: 18px;
    font-weight: 800;
    letter-spacing: 1px;

    cursor: pointer;

    box-shadow:
        0 0 22px rgba(212,175,55,.6),
        0 5px 15px rgba(0,0,0,.9);

    transition: 0.25s;
}

.box button:hover {
    transform: translateY(-3px);
    box-shadow:
        0 0 35px rgba(212,175,55,.85),
        0 8px 18px rgba(0,0,0,1);
}

/* TEXTO ABAJO */
.box p {
    margin-top: 28px;
    font-size: 15px;
}

.box a {
    color: #d4af37;
    font-weight: 700;
    text-decoration: none;
}

.box a:hover {
    text-decoration: underline;
}