.calc-wrapper {
  max-width: 600px;
  margin: 0 auto;
  padding: 24px;
  background: #ffffff;
  border-radius: 16px;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.05);
  font-family: 'Segoe UI', sans-serif;
}

.calc-wrapper label {
  display: block;
  margin-bottom: 20px;
  font-weight: 600;
  color: #0a2540;
  font-size: 16px;
}

.calc-wrapper input,
.calc-wrapper select {
  width: 100%;
  padding: 12px 14px;
  margin-top: 6px;
  border: 1px solid #ccd6dd;
  border-radius: 10px;
  font-size: 16px;
  background-color: #f8f9fa;
  box-sizing: border-box;
}

.calc-wrapper button,
.calc-wrapper .tn-atom {
  display: block;
  width: 100%;
  max-width: 320px;
  margin: 16px auto 0 auto;
  padding: 14px;
  background-color: #ff9f1c;
  color: white !important;
  font-weight: 600;
  font-size: 17px;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
  transition: background-color 0.3s;
}

.calc-wrapper button:hover,
.calc-wrapper .tn-atom:hover {
  background-color: #e68900;
}

.calc-wrapper h3#result {
  margin-top: 20px;
  font-size: 18px;
  color: #023047;
  text-align: center;
}

/* Мобільна адаптація */
@media (max-width: 767px) {
  .calc-wrapper {
    padding: 20px 16px;
  }

  .calc-wrapper label {
    font-size: 15px;
  }

  .calc-wrapper input,
  .calc-wrapper select {
    font-size: 15px;
  }

  .calc-wrapper button,
  .calc-wrapper .tn-atom {
    width: 100%;
    font-size: 16px;
  }
}