/* Scoped only inside #gymcalc-app */
#gymcalc-app * {
  box-sizing: border-box;
  font-family: "Poppins", sans-serif;
}

#gymcalc-app {
  width: 100%;
  display: flex;
  justify-content: center;
  padding: 20px;
}

.gymcalc-container {
  background: #2c2f33;
  color: #fff;
  padding: 20px;
  border-radius: 15px;
  width: 100%;
  max-width: 600px;
  text-align: center;
}

.gymcalc-container header h1 {
  font-size: 1.8rem;
  color: #00ff88;
}

.gymcalc-tabs {
  display: flex;
  justify-content: space-between;
  margin: 15px 0;
}

.gymcalc-tab-btn {
  background: #444;
  color: #fff;
  border: none;
  padding: 8px 12px;
  border-radius: 8px;
  cursor: pointer;
}
.gymcalc-tab-btn.active,
.gymcalc-tab-btn:hover {
  background: #00ff88;
  color: #111;
}

.gymcalc-tab-content {
  display: none;
  margin-top: 15px;
  text-align: left;
}
.gymcalc-tab-content.active {
  display: block;
}

#gymcalc-app label {
  display: block;
  margin: 8px 0;
}
#gymcalc-app input,
#gymcalc-app select {
  width: 100%;
  padding: 8px;
  border-radius: 6px;
  border: none;
  margin-top: 5px;
}
#gymcalc-app button {
  margin-top: 10px;
  padding: 10px 15px;
  background: #00ff88;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-weight: bold;
}
#gymcalc-app button:hover {
  background: #ffcc00;
}

#gymcalc-app p {
  margin-top: 10px;
  font-weight: bold;
}