/* 💧 Калькулятор гидратации — водная синяя тема */
.calculator-layout {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  padding: 30px;
  font-family: 'Segoe UI', sans-serif;
}

.calc-block {
  flex: 1;
  min-width: 300px;
  max-width: 500px;
}

.calc-block h1 {
  color: #01579b;
}

.calc-block .calc-intro {
  color: #546e7a;
}

.calc-block label {
  display: block;
  margin-top: 20px;
  font-weight: 600;
  color: #01579b;
}

.calc-block input,
.calc-block select {
  width: 100%;
  padding: 10px;
  margin-top: 8px;
  font-size: 16px;
  border: 1px solid #90caf9;
  border-radius: 6px;
  background-color: #f5fbff;
  color: #333;
}

.calc-block input:focus,
.calc-block select:focus {
  outline: 2px solid #29b6f6;
  border-color: #29b6f6;
}

.field-hint {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: #78909c;
}

.calc-block button {
  margin-top: 25px;
  padding: 12px 24px;
  background: linear-gradient(135deg, #0288d1, #01579b);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 3px 10px rgba(2, 136, 209, 0.35);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.calc-block button:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 16px rgba(2, 136, 209, 0.45);
  background: linear-gradient(135deg, #0277bd, #013a63);
}

.result-block {
  background: linear-gradient(180deg, #e1f5fe, #f0faff);
  padding: 25px;
  border-top: 5px solid #0288d1;
  border-radius: 12px;
  flex: 1;
  min-width: 280px;
}

.result-block h2 {
  margin-top: 0;
  color: #01579b;
}

.result-output p {
  margin: 12px 0;
  font-size: 17px;
  color: #222;
}

.result-output .result-main {
  font-size: 22px;
  font-weight: 700;
  color: #01579b;
}

.result-output .result-sub {
  font-size: 15px;
  color: #546e7a;
}

.calculator-description {
  max-width: 800px;
  margin: 50px auto;
  padding: 30px;
  background-color: #e8f4fd;
  border-top: 5px solid #0288d1;
  border-radius: 12px;
  line-height: 1.6;
  font-size: 16px;
  color: #263238;
}

.calculator-description h2,
.calculator-description h3 {
  color: #01579b;
  margin-top: 20px;
}