:root {
  --bg: #fafafa;
  --card: #ffffff;
  --text: #1c1e21;
  --muted: #5b6370;
  --blue: #1a56db;
  --blue-dark: #1242ad;
  --border: #e2e5ea;
  --error: #b3261e;
  --error-bg: #fdf2f1;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Hiragino Sans", "Noto Sans JP", sans-serif;
  line-height: 1.6;
}

.wrap { max-width: 760px; margin: 0 auto; padding: 0 20px; }

.site-header { padding: 32px 0 8px; }
.header-row { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; }
.brand { margin: 0; font-size: 13px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
h1 { margin: 2px 0 0; font-size: 28px; }
h2 { font-size: 19px; margin: 0 0 12px; }
h3 { font-size: 16px; margin: 20px 0 8px; }

.lang-switch { display: flex; gap: 4px; padding-top: 6px; }
.lang-btn {
  border: 1px solid var(--border); background: var(--card); color: var(--muted);
  padding: 4px 10px; border-radius: 6px; font-size: 13px; cursor: pointer;
}
.lang-btn.active { background: var(--blue); border-color: var(--blue); color: #fff; }

.lede { font-size: 16px; color: var(--muted); margin: 12px 0 24px; }

.card {
  background: var(--card); border: 1px solid var(--border); border-radius: 10px;
  padding: 20px; margin-bottom: 20px;
}

label { display: block; font-weight: 600; font-size: 14px; margin-bottom: 6px; }
.req { color: var(--error); }
.opt { color: var(--muted); font-weight: 400; }
.help { font-size: 13px; color: var(--muted); margin: 6px 0 0; }

textarea, input, select {
  width: 100%; font: inherit; color: var(--text);
  border: 1px solid var(--border); border-radius: 6px; padding: 10px;
  background: #fff;
}
textarea:focus, input:focus, select:focus {
  outline: 2px solid var(--blue); outline-offset: 1px; border-color: var(--blue);
}
textarea.invalid, input.invalid { border-color: var(--error); }
textarea.invalid:focus { outline-color: var(--error); }

.field-row { display: flex; gap: 16px; margin-top: 16px; }
.field { flex: 1; }

.field-error { color: var(--error); font-size: 13px; margin: 6px 0 0; }

.actions { display: flex; gap: 12px; margin-top: 18px; flex-wrap: wrap; }
.btn {
  display: inline-block; font: inherit; font-weight: 600; font-size: 15px;
  border-radius: 6px; padding: 10px 18px; cursor: pointer; text-decoration: none;
  border: 1px solid transparent;
}
.btn.primary { background: var(--blue); color: #fff; }
.btn.primary:hover { background: var(--blue-dark); }
.btn.primary:disabled { background: #9db5e8; cursor: not-allowed; }
.btn.secondary { background: #fff; color: var(--blue); border-color: var(--blue); }
.btn.secondary:hover { background: #f0f4fd; }
.btn:focus-visible { outline: 2px solid var(--blue-dark); outline-offset: 2px; }

.status { min-height: 22px; font-size: 14px; color: var(--muted); margin: 0 0 12px; }
.status.error { color: var(--error); }

.note { font-size: 13px; color: var(--muted); }
.reactions { list-style: none; padding: 0; margin: 12px 0 0; }
.reactions li { border: 1px solid var(--border); border-radius: 8px; padding: 14px; margin-bottom: 12px; }
.reactions .who { font-size: 13px; color: var(--muted); margin: 0 0 6px; }
.reactions .concern { margin: 0 0 6px; }
.reactions .question { margin: 0; font-size: 14px; }
.reactions .lbl { font-weight: 600; }

ul#themes { margin: 0; padding-left: 20px; }
ol#survey-questions { margin: 0; padding-left: 22px; }
ol#survey-questions li { margin-bottom: 4px; }

.error-card { border-color: #f0b8b3; background: var(--error-bg); }
.error-card h2 { color: var(--error); }

pre {
  background: #f4f5f7; border: 1px solid var(--border); border-radius: 6px;
  padding: 12px; overflow-x: auto; font-size: 13px;
}
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

.fine p { font-size: 13px; color: var(--muted); }
a { color: var(--blue); }

.site-footer { padding: 16px 0 40px; color: var(--muted); font-size: 13px; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

@media (max-width: 520px) {
  .field-row { flex-direction: column; gap: 12px; }
  h1 { font-size: 24px; }
  .actions .btn { width: 100%; text-align: center; }
}