:root {
  color-scheme: light;
  --bg: #f7f5f2;
  --fg: #222;
  --accent: #d9534f;
  --hedge: #4a90d9;
  --border: #ccc;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, "Hiragino Sans", "Yu Gothic", sans-serif;
  background: var(--bg);
  color: var(--fg);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 2rem 1rem;
}

main {
  width: 100%;
  max-width: 640px;
}

.site-footer {
  width: 100%;
  max-width: 640px;
  margin-top: 2rem;
  text-align: center;
  font-size: 0.8rem;
}

.site-footer a {
  color: #666;
}

.policy {
  margin-top: 1.5rem;
}

.policy h2 {
  font-size: 1rem;
  margin: 1.5rem 0 0.4rem;
}

.policy p {
  font-size: 0.9rem;
  line-height: 1.8;
  color: #333;
  margin: 0;
}

.policy p.policy-date {
  margin-top: 2rem;
  color: #888;
  font-size: 0.8rem;
}

.back-link {
  margin-top: 2rem;
  font-size: 0.85rem;
}

h1 {
  font-size: 1.5rem;
  margin-bottom: 0.25rem;
}

h1 a {
  color: inherit;
  text-decoration: none;
}

h1 a:hover {
  text-decoration: underline;
}

.lead {
  color: #666;
  margin-top: 0;
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
}

textarea {
  width: 100%;
  min-height: 120px;
  padding: 0.75rem;
  font-size: 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  resize: vertical;
  font-family: inherit;
}

.counter {
  text-align: right;
  font-size: 0.8rem;
  color: #888;
  margin: 0.25rem 0 1rem;
}

button {
  display: block;
  width: 100%;
  padding: 0.75rem;
  font-size: 1rem;
  font-weight: bold;
  color: #fff;
  background: var(--accent);
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

button:hover {
  opacity: 0.9;
}

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

.result {
  margin-top: 2rem;
}

.score-row {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.score-label {
  color: #666;
  font-size: 0.9rem;
}

.score-value {
  font-size: 2.5rem;
  font-weight: bold;
}

.level-badge {
  display: inline-block;
  margin: 0.5rem 0 1.5rem;
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  font-weight: bold;
  color: #fff;
  background: #999;
}

h2 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.highlighted {
  white-space: pre-wrap;
  line-height: 1.9;
  padding: 1rem;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
}

mark.subject {
  background: #fbdcda;
  color: var(--accent);
  border-radius: 3px;
  padding: 0 2px;
}

mark.quantifier {
  background: #fde6c2;
  color: #b06a00;
  border-radius: 3px;
  padding: 0 2px;
}

mark.hedge {
  background: #dceaf9;
  color: var(--hedge);
  border-radius: 3px;
  padding: 0 2px;
}

mark.suffix {
  background: #ede0f7;
  color: #7c4dbf;
  border-radius: 3px;
  padding: 0 2px;
  border-bottom: 1px dashed #7c4dbf;
}

.match-list {
  margin-top: 1rem;
  padding-left: 1.2rem;
  font-size: 0.85rem;
  color: #555;
}

.loaded-notice {
  margin: 0 0 0.75rem;
  padding: 0.3rem 0.7rem;
  font-size: 0.8rem;
  color: #2a6b2a;
  background: #e5f4e5;
  border-radius: 6px;
}

.loaded-notice:not([hidden]) {
  display: inline-block;
}

.link-box {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.sns-post-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.sns-post-row button {
  width: auto;
  flex: 1 1 auto;
  min-width: 140px;
  font-size: 0.85rem;
  padding: 0.6rem 0.5rem;
}

#genUrlBtn {
  background: #555;
  margin-top: 0.6rem;
}

.x-post-btn {
  background: #000;
}

.bluesky-post-btn {
  background: #0285ff;
}

.threads-post-btn {
  background: #333;
}

.url-result {
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.75rem;
  flex-wrap: wrap;
}

.url-result:not([hidden]) {
  display: flex;
}

.result-url {
  flex: 1 1 auto;
  min-width: 0;
  padding: 0.5rem;
  font-size: 0.85rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fff;
  color: inherit;
}

.url-result button {
  width: auto;
  padding: 0.5rem 1rem;
  flex: 0 0 auto;
}

.copied-notice {
  font-size: 0.8rem;
  color: #2a6b2a;
}