body {
  background: #1e1e1e;
  color: #fff;
  font-family: sans-serif;
  display: flex;
  justify-content: center;
  margin: 0;
  padding: 20px;
}

.container {
  display: flex;
  flex-wrap: nowrap;           /* 折り返し禁止 */
  justify-content: center;
  align-items: stretch;
  gap: 8px;
  width: 100%;
  max-width: 960px;
  box-sizing: border-box;
}

.section {
  background: #2a2a2a;
  border-radius: 10px;
  padding: 8px 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 0 1 clamp(180px, 20vw, 220px); /* PCでは幅固定・自然可変 */
  box-sizing: border-box;
}

.label {
  font-weight: bold;
  margin-bottom: 8px;
  font-size: 15px;
}
.label.before { color: #ff66cc; }
.label.after  { color: #c299ff; }

.grid {
  display: grid;
  grid-template-columns: repeat(2, auto);
  gap: 6px 10px;
  margin-bottom: 4px;
}

.note-button {
  background-color: #1e1e1e;
  color: #fff;
  border: 1px solid #555;
  padding: 8px 14px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
  width: 50px;
  text-align: center;
  transition: background-color 0.2s;
}
.note-button:hover { background-color: #444; }
.note-button.selected.before { background-color: #ff66cc; color: #000; }
.note-button.selected.after  { background-color: #c299ff; color: #000; }

.result-box {
  background: #2a2a2a;
  border-radius: 10px;
  padding: 20px;
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  flex: 0 1 clamp(120px, 14vw, 150px); /* PCでは固定的な自然幅 */
  box-sizing: border-box;
}

.result-label {
  font-size: 15px;
  font-weight: bold;
  margin-bottom: 6px;
  color: #ccc;
}
.result-value {
  font-size: 26px;
  font-weight: bold;
  margin-bottom: 8px;
}
.result-degree {
  font-size: 15px;
  color: #ccc;
  margin-bottom: 10px;
}

/* 📱 スマホで可変幅を有効化 */
@media (max-width: 720px) {
  body { padding: 10px; }
  .container {
    gap: 6px;
    justify-content: center;
    max-width: 100%;
  }
  .section,
  .result-box {
    flex: 1 1 auto;     /* 3ブロックすべて可変化 */
    width: auto;
    min-width: 0;
    padding: 6px 8px;
  }
  .note-button {
    font-size: 13px;
    padding: 6px 10px;
  }
}