.calculator {
      display: flex;
      flex-direction: column;
      align-items: center;
      max-width: 500px;
      width: 100%;
}

.calculator strong {
      color: var(--theme);
}

.calculator p.description {
      color: #000;
      font-size: 16px;
      margin-bottom: 20px;
      line-height: 1.5;
}

.input-group {
      display: flex;
      flex-direction: column;
      gap: 15px;
      margin-bottom: 30px;
      width: 100%;
      background-color: var(--theme);
      border-radius: 20px;
      padding: 30px;
}

.date-inputs {
      display: grid;
      gap: 15px;
      grid-template-columns: 1fr 1fr;
      color: #fff;
}

label {
      font-size: 16px;
      margin-bottom: 5px;
      display: block;
      color: #fff;
}

input[type="date"] {
      padding: 10px 10px;
      font-size: 16px;
      border: none;
      border-radius: 10px;
      outline: none;
      color: #000;;
      width: 100%;
}

.calculator button {
      background-color: #fff;
      color: #000;
      cursor: pointer;
      border-radius: 5px;
      padding: 12px 20px;
      transition: background 0.3s ease;
}

button:hover {
      background: #ddd;
}

.output {
      display: grid;
      gap: 10px;
      justify-content: center;
      grid-template-columns: 1fr 1fr 1fr;
}

.card {
     background: var(--theme);
      color: #fff;
      padding: 20px;
      border-radius: 15px;
      box-shadow: 0 8px 20px rgba(0,0,0,0.4);
      text-align: center;
      transition: transform 0.3s ease;
      min-width: 80px;
}

.card:hover {
    transform: translateY(-5px);
}

.card h2 {
      font-size: 36px;
      margin: 0;
      line-height: 1em;
}

.card p {
      margin: 0 0 0 0;
      color: #fff;
      font-size: 14px;
}

@media (max-width: 600px) {
    .output {
        flex-direction: column;
        align-items: center;
    }
    .date-inputs {
        align-items: center;
    }
}