* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f4f6f8;
  color: #333;
  font-size: 16px;
  line-height: 1.6;
}

.container {
  max-width: 560px;
  margin: 0 auto;
  padding: 16px;
}

h1 {
  font-size: 1.3rem;
  color: #1b5e20;
  margin-bottom: 4px;
}

.subtitle {
  font-size: 0.85rem;
  color: #666;
  margin-bottom: 20px;
}

.card {
  background: #fff;
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 16px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
}

h2 {
  font-size: 1rem;
  color: #2e7d32;
  margin-bottom: 12px;
  border-left: 4px solid #2e7d32;
  padding-left: 8px;
}

.form-group {
  margin-bottom: 12px;
}

label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 4px;
  color: #444;
}

.hint {
  font-size: 0.78rem;
  font-weight: normal;
  color: #888;
}

input[type="number"] {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s;
}

input[type="number"]:focus {
  border-color: #2e7d32;
}

.btn-calc {
  display: block;
  width: 100%;
  padding: 14px;
  background: #2e7d32;
  color: #fff;
  font-size: 1.05rem;
  font-weight: 700;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  margin-bottom: 16px;
  transition: background 0.2s;
}

.btn-calc:hover {
  background: #1b5e20;
}

.result-card {
  background: #fff;
}

.result-block {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid #f0f0f0;
}

.result-block:last-of-type {
  border-bottom: none;
}

.result-label {
  font-size: 0.88rem;
  color: #555;
}

.result-value {
  font-size: 1.1rem;
  font-weight: 700;
  color: #1b5e20;
}

.result-value.sub {
  font-size: 0.95rem;
  color: #444;
  font-weight: 600;
}

.result-value.highlight {
  font-size: 1.4rem;
  color: #d32f2f;
}

hr {
  border: none;
  border-top: 1px solid #e0e0e0;
  margin: 8px 0;
}

.judgment {
  margin-top: 12px;
  padding: 12px;
  border-radius: 6px;
  font-size: 0.92rem;
  font-weight: 600;
  text-align: center;
}

.judgment.low {
  background: #e8f5e9;
  color: #2e7d32;
}

.judgment.mid {
  background: #fff8e1;
  color: #e65100;
}

.judgment.high {
  background: #ffebee;
  color: #c62828;
}

.save-row {
  display: flex;
  gap: 8px;
  margin-top: 4px;
}

.btn-save {
  flex: 1;
  padding: 10px;
  background: #1565c0;
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 0.9rem;
  cursor: pointer;
}

.btn-save:hover {
  background: #0d47a1;
}

.btn-clear {
  flex: 1;
  padding: 10px;
  background: #fff;
  color: #666;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 0.9rem;
  cursor: pointer;
}

.btn-clear:hover {
  background: #f5f5f5;
}

.save-msg {
  font-size: 0.82rem;
  color: #2e7d32;
  margin-top: 6px;
  min-height: 1.2em;
}

@media (max-width: 400px) {
  h1 {
    font-size: 1.15rem;
  }
}