SANTA CLARA — Colin Kaepernick entered the 49ers media trailer Wednesday with a black T-shirt that defined his emergence last season: “Dual Threat.”

After using his powerful arm and nimble legs to help guide the 49ers to the Super Bowl, Kaepernick is back at work, joining his 49ers teammates in an offseason program that began Monday.

“Hopefully we’re in the same position next year and finish it the right way,” Kaepernick said in reflecting on the 49ers’ 34-31 loss to the Baltimore Ravens in Super Bowl XLVII.

That was only Kaepernick’s 10th career start, and the 49ers’ final offensive series reached the Ravens’ 5-yard line before his final three passes fell incomplete toward Michael Crabtree.

“What most people don’t realize is the last plays weren’t the problem,” Kaepernick added. “It was the first half. We didn’t execute in the first half like we should have, so we wouldn’t have been in that position.”

A week after the Super Bowl, Kaepernick began working out at CES Performance near Atlanta, Ga., where he was joined by a few of the 49ers’ young receivers, including Ricardo Lockette, Chad Hall and A.J. Jenkins.

“We ran, we threw, we worked out to make sure we are a step ahead of the game,” Kaepernick said of their seven-week session there.

Kaepernick’s offseason work hasn’t gone unnoticed, only two months into a seven-month haul before the season opener. General manager Trent Baalke praised Kaepernick’s training regimen, then identified a few areas where Kaepernick can improve during the team’s offseason program.

“Just continue to hone in on the techniques, the footwork, the mechanics, the lower-body mechanics that are so critical at that position and the playbook,” Baalke said Wednesday at his news conference in advance of next week’s draft.

Kaepernick said of his offseason goals: “I’m trying to improve everything, from throwing to the playbook to running. I’m trying to be the complete package.”

Two years ago, the 49ers moved up to draft Kaepernick 36th overall out of the University of Nevada. He seized the starting role after Alex Smith sustained a concussion Nov. 11 against the St. Louis Rams.

Kaepernick went 7-3 as a starter, including playoff wins over the Green Bay Packers and Atlanta Falcons. His 181 rushing yards against the Packers were the most in a single game ever by an NFL quarterback.

“He’s doing an excellent job,” Baalke said of Kaepernick. “There’s no harder worker. I can say that about a lot of guys. This team works.”

Kaepernick’s offseason also has included working out with first lady Michelle Obama in Chicago as part of a youth initiative. He served as a presenter at the American Country Music Awards, and he walked the red carpet at a pre-Grammy gala.

“I don’t worry about any of that stuff,” Kaepernick said of his blossoming fame. “I’m here to work and play football.”

That’s also how Kaepernick described Jenkins’ attitude during their Atlanta training sessions, noting that “he’s been working the same way everybody has.”

Lockette, who spent last season on the practice squad, is an intriguing option to make this season’s roster while Mario Manningham and Kyle Williams recover from knee injuries.

“He’s one of the fastest guys on the team and I’ve been trying to keep up with him,” Kaepernick said of Lockette.

Although Crabtree has shown up for the 49ers offseason program, Anquan Boldin has not. Baalke said Boldin is merely transitioning his family here after being acquired last month in a trade with the Baltimore Ravens.

Colt McCoy and Scott Tolzien, Kaepernick’s backups, are present for the offseason program, which is limited to strength and conditioning the first two weeks.

Baalke is not averse to using one of the 49ers’ 13 draft picks on a quarterback, noting: “If there’s a quarterback there that you feel good about, and your in position to take him and your gut says draft that guy, I wouldn’t disagree with that.”

For more on the 49ers, see Cam Inman’s Hot Read blog at blogs.mercurynews.com/49ers. Follow him on Twitter at twitter.com/CamInman.

Kaepernick’s second quote on Super Bowl needs to be cleaned up (and I’m not sure how I missed inserting “first half” emphasis to it) but here it is since story still trending high:

“What most people don’t realize is the last we plays weren’t the problem,” Kaepernick added. “It was the first half. We didn’t execute in the first half like we should have, so we wouldn’t have been in that position.”