* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 24px;
  background: #f4f7f4;
  color: #222;
  font-family: Arial, sans-serif;
}

.a2z-calculator {
  max-width: 650px;
  margin: 20px auto;
  padding: 30px;
  background: white;
  border: 1px solid #d8e2d9;
  border-radius: 14px;
  box-shadow: 0 5px 20px rgba(0,0,0,.06);
}

.a2z-calculator h1 {
  margin-top: 0;
  color: #176b36;
  font-size: 32px;
  line-height: 1.2;
}

.a2z-calculator .subtitle {
  margin-bottom: 28px;
  color: #666;
}

.a2z-calculator label {
  display: block;
  margin-bottom: 10px;
  font-weight: bold;
}

.a2z-calculator input {
  display: block;
  width: 100%;
  padding: 13px;
  margin-bottom: 18px;
  border: 1px solid #bbb;
  border-radius: 6px;
  font-size: 16px;
}

.a2z-calculator button {
  width: 100%;
  padding: 14px;
  background: #176b36;
  color: white;
  border: 0;
  border-radius: 6px;
  font-size: 16px;
  font-weight: bold;
  cursor: pointer;
}

.a2z-calculator .results {
  margin-top: 22px;
  padding: 18px;
  background: #edf7ef;
  border-radius: 8px;
  line-height: 1.8;
}

.a2z-calculator .disclaimer {
  margin-top: 20px;
  color: #666;
  font-size: 12px;
  line-height: 1.6;
}

@media (max-width: 480px) {
  body {
    padding: 10px;
  }

  .a2z-calculator {
    padding: 20px;
  }

  .a2z-calculator h1 {
    font-size: 26px;
  }
}