body {
  font-family: "Hiragino Sans", "Meiryo", sans-serif;
  background: #f5f5f7;
  margin: 0;
  padding: 40px 16px;
}

.container {
  max-width: 720px;
  margin: 0 auto;
  background: white;
  padding: 32px;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

h1 {
  font-size: 22px;
  margin-bottom: 4px;
}

h2 {
  font-size: 16px;
  margin-top: 28px;
}

#translate-form {
  display: flex;
  gap: 8px;
  margin-top: 16px;
}

#text-input {
  flex: 1;
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 6px;
}

button {
  padding: 10px 16px;
  background: #2d6cdf;
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 14px;
  cursor: pointer;
}

.copy-button {
  background: #999;
  font-size: 12px;
  padding: 4px 10px;
}

button:disabled {
  background: #9fb6e0;
  cursor: not-allowed;
}

.loading {
  margin-top: 8px;
  color: #2d6cdf;
  font-size: 13px;
}

.flash-error {
  color: #c0392b;
  min-height: 1.2em;
  margin-top: 8px;
}

.original-block {
  margin-top: 16px;
}

.lang-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 12px;
}

.lang-card {
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 12px;
  background: #fafafa;
}

.lang-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.lang-label {
  font-weight: bold;
  font-size: 13px;
}

.lang-text {
  white-space: pre-wrap;
  margin-top: 8px;
  min-height: 1.5em;
}

.history-item {
  border-top: 1px solid #eee;
  padding: 10px 0;
}

.history-original {
  font-weight: bold;
}

.history-item ul {
  margin: 4px 0 0;
  padding-left: 20px;
  font-size: 13px;
  color: #444;
}