:root {
  --bg: #fafaf8;
  --card: #ffffff;
  --border: #e2e0da;
  --text: #2a2824;
  --muted: #7a766c;
  --accent: #b3452c;
  --accent-dark: #8f3722;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, "Segoe UI", "Noto Sans JP", sans-serif;
  line-height: 1.5;
}

.topbar {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 24px; border-bottom: 1px solid var(--border); background: var(--card);
}
.brand { font-weight: 700; font-size: 18px; color: var(--accent); text-decoration: none; }
.container { max-width: 880px; margin: 0 auto; padding: 24px; }

.card {
  background: var(--card); border: 1px solid var(--border); border-radius: 10px;
  padding: 20px 24px; margin-bottom: 20px;
}
.card.narrow { max-width: 420px; margin: 40px auto; }

h1 { font-size: 24px; margin: 0 0 12px; }
h2 { font-size: 17px; margin: 0 0 10px; }

label { display: block; margin-bottom: 12px; font-size: 13px; color: var(--muted); }
input[type=text], input[type=email], input[type=password], select {
  display: block; width: 100%; margin-top: 4px; padding: 9px 10px;
  border: 1px solid var(--border); border-radius: 6px; font-size: 15px; color: var(--text);
  background: var(--bg);
}
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
.checkbox { display: flex; align-items: center; gap: 8px; }
.checkbox input { width: auto; }

button, .button {
  cursor: pointer; border: 1px solid var(--border); background: var(--card);
  padding: 9px 16px; border-radius: 6px; font-size: 14px; color: var(--text);
  text-decoration: none; display: inline-block;
}
button.primary, .button.primary {
  background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600;
}
button.primary:hover, .button.primary:hover { background: var(--accent-dark); }
.link-btn { border: none; background: none; color: var(--accent); padding: 0; text-decoration: underline; }
.link-btn.danger { color: #a33; }
form.inline { display: inline; }
form.inline-form { display: flex; gap: 8px; margin-bottom: 14px; }
form.inline-form input { flex: 1; }

.muted { color: var(--muted); font-size: 13px; }
.error { color: #a33; font-size: 14px; }
.jp { font-family: "Noto Sans JP", "Hiragino Sans", sans-serif; }

.class-list { list-style: none; padding: 0; }
.class-list li { padding: 10px 0; border-bottom: 1px solid var(--border); }
.class-list a { font-weight: 600; color: var(--text); text-decoration: none; margin-right: 10px; }

.lookup-row { display: flex; gap: 8px; margin-bottom: 10px; }
.lookup-row input { flex: 1; }
.candidates { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
button.candidate { text-align: left; }
.inline-btn { display: flex; gap: 6px; }
.inline-btn input { flex: 1; }

table.word-table { width: 100%; border-collapse: collapse; font-size: 14px; }
table.word-table th, table.word-table td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--border); }
code { background: var(--bg); border: 1px solid var(--border); border-radius: 4px; padding: 1px 5px; font-size: 12px; }