.gp-login-page {
    min-height: 100vh;
    background: linear-gradient(135deg, #0F4C5C, #1B6B7D, #2C7A8A);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.gp-login-card {
    width: 100%;
    max-width: 380px;
    background: #fff;
    border-radius: 22px;
    padding: 28px;
    box-shadow: 0 15px 40px rgba(0,0,0,.25);
}

.gp-login-logo {
    width: 160px;
    display: block;
    margin: 0 auto 18px auto;
}

.gp-login-group {
    margin-bottom: 14px;
}

.gp-login-label {
    display: block;
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 6px;
}

.gp-login-input,
.gp-login-select {
    width: 100%;
    height: 44px;
    border: 2px solid #CBD5E1;
    border-radius: 12px;
    padding: 0 12px;
}
.gp-login-button {
    width: 100%;
    height: 52px;
    border: none;
    border-radius: 16px;
    /* degradado más claro petróleo */
    background: linear-gradient( 135deg, #1B6B7D, #2C8AA0 );
    color: white;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    margin-top: 10px;
    /* efecto levantado suave */
    box-shadow: 0 6px 0 #0C3E4A;
    transition: all .18s ease;
}

    /* hover más brillante */
    .gp-login-button:hover {
        background: linear-gradient( 135deg, #2C8AA0, #3BA9C0 );
        transform: translateY(-2px);
        box-shadow: 0 8px 0 #0C3E4A;
    }

    /* click */
    .gp-login-button:active {
        transform: translateY(2px);
        box-shadow: 0 3px 0 #0C3E4A;
    }