:root {
  --fg: #1c1e21;
  --muted: #6b7280;
  --line: #d9dde3;
  --bg: #f5f6f8;
  --card: #ffffff;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --danger: #dc2626;
  --ok: #059669;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", "Hiragino Kaku Gothic ProN", Meiryo, system-ui, sans-serif;
  color: var(--fg);
  background: var(--bg);
  line-height: 1.6;
}
a { color: var(--primary); }

.topbar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 10px 20px; background: var(--card); border-bottom: 1px solid var(--line);
  flex-wrap: wrap;
}
.brand { font-weight: 700; font-size: 1.05rem; text-decoration: none; color: var(--fg); }
.topbar nav { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.topbar .who { color: var(--muted); font-size: .85rem; }
.inline { display: inline; }

main { max-width: 960px; margin: 0 auto; padding: 24px 20px 80px; }
.page > h1 { margin-top: 0; }
h2 { margin-top: 28px; font-size: 1.1rem; }

.hint { color: var(--muted); font-size: .9rem; }
code { background: #eef1f5; padding: 1px 5px; border-radius: 4px; font-size: .88em; }

.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  padding: 16px; margin: 12px 0;
}
.card.centered { max-width: 420px; margin: 60px auto; text-align: center; }
.card.disabled { opacity: .6; }

.notice { background: #eef2ff; border: 1px solid #c7d2fe; border-radius: 8px; padding: 10px 12px; margin: 12px 0; font-size: .9rem; }
.notice.warn { background: #fff7ed; border-color: #fed7aa; }

.btn {
  display: inline-block; padding: 8px 14px; border: 1px solid var(--line);
  border-radius: 8px; background: var(--card); color: var(--fg); cursor: pointer;
  font-size: .92rem; text-decoration: none;
}
.btn:hover { background: #f0f2f5; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn.primary:hover { background: var(--primary-dark); }
.btn.danger { color: var(--danger); border-color: #f0c0c0; }
.btn.danger:hover { background: #fdecec; }
.btn.big { padding: 11px 22px; font-size: 1rem; }
.btn.small { padding: 4px 10px; font-size: .82rem; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.linkish { background: none; border: none; color: var(--primary); cursor: pointer; font: inherit; padding: 2px 4px; }

/* セグメント行 */
.seg-row { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 12px; margin: 10px 0; }
.seg-head { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.seg-no { font-weight: 700; color: var(--muted); font-variant-numeric: tabular-nums; }
.seg-voice { padding: 6px 8px; border: 1px solid var(--line); border-radius: 6px; min-width: 160px; }
.seg-head .linkish { margin-left: 0; font-size: 1rem; }
.seg-head .seg-del { margin-left: auto; color: var(--danger); }
.seg-gen { padding: 3px 10px; font-size: .82rem; }
.seg-state { font-size: .78rem; color: var(--muted); }
.seg-state.ok { color: var(--ok); }
.seg-state.stale { color: #b45309; }
.seg-state.err { color: var(--danger); }
.seg-result:not(:empty) { margin-top: 8px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.seg-result audio { height: 32px; max-width: 320px; }
.seg-text, #paste-src, textarea {
  width: 100%; padding: 8px 10px; border: 1px solid var(--line); border-radius: 6px;
  font: inherit; resize: vertical;
}
.seg-result:empty { display: none; }

.row-actions { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin: 12px 0; }
.paste-box { border: 1px dashed var(--line); border-radius: 8px; padding: 8px 12px; }
.paste-box summary { cursor: pointer; }
.paste-box textarea { margin: 8px 0; }

.generate-bar {
  position: sticky; bottom: 0; background: var(--bg); padding: 14px 0;
  display: flex; gap: 12px; align-items: center; flex-wrap: wrap; border-top: 1px solid var(--line);
}
.status { color: var(--muted); font-size: .9rem; }
.status.err { color: var(--danger); }

/* 結果 */
.result-row { border: 1px solid var(--line); border-radius: 10px; padding: 12px; margin: 10px 0; background: var(--card); }
.result-row.ng { border-color: #f0c0c0; background: #fdf2f2; }
.result-head { display: flex; align-items: center; gap: 10px; margin-bottom: 6px; }
.result-row audio { display: block; width: 100%; margin: 6px 0; }
.tag { background: #eef2ff; color: var(--primary-dark); border-radius: 999px; padding: 2px 10px; font-size: .8rem; }
.tag.err { background: #fde8e8; color: var(--danger); }
.muted { color: var(--muted); }
.small { font-size: .82rem; }
.err-msg { color: var(--danger); font-size: .88rem; }

/* フォーム */
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; }
label { display: block; font-size: .85rem; color: var(--muted); }
label input, label select { width: 100%; padding: 7px 9px; border: 1px solid var(--line); border-radius: 6px; font: inherit; color: var(--fg); }
label.chk, label.inline { display: flex; align-items: center; gap: 6px; }
label.chk input, label.inline input { width: auto; }
details summary { cursor: pointer; margin: 8px 0; color: var(--primary); font-size: .88rem; }
.voice-form .row-actions { margin-top: 10px; }

.tbl { width: 100%; border-collapse: collapse; margin: 12px 0; background: var(--card); }
.tbl th, .tbl td { border: 1px solid var(--line); padding: 7px 10px; text-align: left; font-size: .9rem; }
.tbl th { background: #f0f2f5; }
.tbl input, .tbl select { padding: 5px 7px; border: 1px solid var(--line); border-radius: 5px; font: inherit; width: auto; }

/* サイト A/B */
.site-switch { display: flex; gap: 4px; }
.site-switch a {
  display: inline-block; min-width: 30px; text-align: center; padding: 4px 10px;
  border: 1px solid var(--line); border-radius: 6px; text-decoration: none; color: var(--fg);
  font-weight: 700;
}
.site-switch a.on { background: var(--primary); border-color: var(--primary); color: #fff; }
.site-badge {
  display: inline-block; padding: 2px 10px; border-radius: 999px; background: #eef2ff;
  color: var(--primary-dark); font-size: .8rem; font-weight: 700; vertical-align: middle;
}
.site-tabs { display: flex; gap: 6px; margin: 12px 0; flex-wrap: wrap; }
.site-tabs a {
  padding: 6px 14px; border: 1px solid var(--line); border-bottom: none;
  border-radius: 8px 8px 0 0; text-decoration: none; color: var(--fg); background: #eef0f3;
}
.site-tabs a.on { background: var(--card); font-weight: 700; border-color: var(--primary); }
.result-row.combined { border-color: var(--primary); background: #f5f8ff; }
h3 { font-size: .95rem; margin: 16px 0 4px; }

.title-field { display: block; margin: 12px 0; font-size: .9rem; color: var(--muted); }
.title-field input {
  display: block; width: 100%; margin-top: 4px; padding: 9px 11px;
  border: 1px solid var(--line); border-radius: 6px; font: inherit; color: var(--fg);
}
.hist-group { margin: 20px 0; }
.hist-group h2 { margin-bottom: 4px; }
#status a { margin-left: 8px; }