/* Zantuka AI: responsive, no external assets (CSP: self only). */
:root {
  --bg: #f6f7f9; --panel: #ffffff; --ink: #1d2433; --muted: #5b6577; --line: #dde2ea; --soft: #eef1f5;
  --brand: #1f5f8b; --brand-ink: #ffffff; --focus: #2b7bd6;
  --ok: #1d7a46; --ok-bg: #e5f4ec; --info: #1f5f8b; --info-bg: #e5eff8;
  --warn: #8a5a00; --warn-bg: #fff4d6; --bad: #a3262a; --bad-bg: #fde8e8; --grey-bg: #eceff3;
  --ins: #d9f2df; --del: #fbdcdc; --mark: #fff0b3;
  --radius: 10px; --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .08);
  --mono: ui-monospace, "Cascadia Mono", Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #11151c; --panel: #181e27; --ink: #e6e9ef; --muted: #9aa4b5; --line: #2a3340; --soft: #1f2631;
    --brand: #5aa7dc; --brand-ink: #0b1220; --focus: #7cc0ff;
    --ok: #6fd39b; --ok-bg: #12301f; --info: #8cc4ef; --info-bg: #142636;
    --warn: #ffd27a; --warn-bg: #352a10; --bad: #ff9a9a; --bad-bg: #3a1618; --grey-bg: #242c38;
    --ins: #1d3d27; --del: #4a1f22; --mark: #4a3f12; --shadow: none;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", sans-serif; }
a { color: var(--brand); }
button, input, select, textarea { font: inherit; color: inherit; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }

/* top bar */
.topbar { display: flex; align-items: center; gap: 16px; padding: 10px 20px; background: var(--panel); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 20; }
.brand { display: flex; align-items: baseline; gap: 8px; min-width: 0; }
.brand-mark { color: var(--brand); font-size: 20px; }
.brand-name { font-weight: 700; white-space: nowrap; }
.brand-tag { color: var(--muted); font-size: 12px; white-space: nowrap; }
.nav { display: flex; gap: 4px; flex: 1; overflow-x: auto; scrollbar-width: none; }
.nav a { padding: 8px 12px; border-radius: 8px; text-decoration: none; color: var(--ink); white-space: nowrap; }
.nav a.active, .nav a:hover { background: var(--soft); }
.who { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 13px; white-space: nowrap; }
.safety-banner { background: var(--warn-bg); color: var(--warn); padding: 8px 20px; font-size: 13px; border-bottom: 1px solid var(--line); }

.main { max-width: 1280px; margin: 0 auto; padding: 20px; }
.main:focus { outline: none; }
h1 { font-size: 22px; margin: 4px 0 16px; }
h2 { font-size: 17px; margin: 0 0 12px; }
h3 { font-size: 15px; margin: 16px 0 8px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.mono { font-family: var(--mono); font-size: 13px; }

.panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); margin-bottom: 16px; }
.grid { display: grid; gap: 16px; }
.grid.two { grid-template-columns: 1fr 1fr; }
.grid.three { grid-template-columns: repeat(3, 1fr); }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.spread { justify-content: space-between; }
.stack > * + * { margin-top: 10px; }

/* controls */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; min-height: 40px; padding: 8px 14px; border-radius: 8px; border: 1px solid var(--line); background: var(--panel); cursor: pointer; text-decoration: none; color: var(--ink); }
.btn:hover { background: var(--soft); }
.btn.primary { background: var(--brand); border-color: var(--brand); color: var(--brand-ink); }
.btn.danger { background: var(--bad-bg); border-color: var(--bad); color: var(--bad); }
.btn.ok { background: var(--ok-bg); border-color: var(--ok); color: var(--ok); }
.btn.small { min-height: 32px; padding: 4px 10px; font-size: 13px; }
.btn[disabled] { opacity: .5; cursor: not-allowed; }
.btn.selected { outline: 3px solid var(--focus); }
label { display: block; font-weight: 600; font-size: 13px; margin: 10px 0 4px; }
input[type=text], input[type=password], input[type=search], input:not([type]), select, textarea {
  width: 100%; padding: 9px 11px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); min-height: 40px;
}
textarea { min-height: 220px; resize: vertical; line-height: 1.6; font-size: 16px; }
.check { display: flex; gap: 8px; align-items: flex-start; font-weight: 400; font-size: 14px; }
.check input { width: 20px; height: 20px; margin-top: 2px; flex: none; }

/* badges and labels */
.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 12px; font-weight: 600; background: var(--grey-bg); color: var(--muted); white-space: nowrap; }
.badge.ok { background: var(--ok-bg); color: var(--ok); }
.badge.info { background: var(--info-bg); color: var(--info); }
.badge.warn { background: var(--warn-bg); color: var(--warn); }
.badge.bad { background: var(--bad-bg); color: var(--bad); }
.label-ai { border: 2px solid var(--bad); background: var(--bad-bg); color: var(--bad); font-weight: 700; padding: 6px 10px; border-radius: 8px; font-size: 13px; letter-spacing: .02em; }
.label-human { border: 2px solid var(--warn); background: var(--warn-bg); color: var(--warn); font-weight: 700; padding: 6px 10px; border-radius: 8px; font-size: 13px; }
.label-approved { border: 2px solid var(--ok); background: var(--ok-bg); color: var(--ok); font-weight: 700; padding: 6px 10px; border-radius: 8px; font-size: 13px; }
.notice { padding: 10px 12px; border-radius: 8px; background: var(--info-bg); color: var(--info); margin: 8px 0; }
.notice.warn { background: var(--warn-bg); color: var(--warn); }
.notice.bad { background: var(--bad-bg); color: var(--bad); }

/* lists and tables */
.list { list-style: none; margin: 0; padding: 0; }
.list > li { padding: 12px; border: 1px solid var(--line); border-radius: 8px; margin-bottom: 8px; background: var(--panel); }
.card-link { display: block; text-decoration: none; color: inherit; }
.card-link:hover { border-color: var(--brand); }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
.kv { display: grid; grid-template-columns: max-content 1fr; gap: 4px 12px; font-size: 14px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; }

/* transcript views */
.transcript { white-space: pre-wrap; line-height: 1.8; font-size: 16px; padding: 12px; background: var(--soft); border-radius: 8px; min-height: 80px; }
.num { background: var(--mark); border-radius: 4px; padding: 0 2px; cursor: pointer; border-bottom: 2px solid var(--warn); }
.num.unreliable { border-bottom-color: var(--bad); }
.diff { white-space: pre-wrap; line-height: 1.8; padding: 12px; background: var(--soft); border-radius: 8px; font-size: 15px; }
.diff del { background: var(--del); text-decoration: line-through; }
.diff ins { background: var(--ins); text-decoration: none; }
.saved { font-size: 13px; color: var(--muted); }
.saved.dirty { color: var(--warn); }
.saved.error { color: var(--bad); }

/* audio player */
.player { position: sticky; top: 58px; z-index: 10; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 10px 12px; box-shadow: var(--shadow); margin-bottom: 16px; }
.player audio { width: 100%; }
.player .row { margin-top: 6px; }
.player select { width: auto; min-height: 36px; }

/* items */
.item { border: 1px solid var(--line); border-radius: 8px; padding: 12px; margin-bottom: 10px; background: var(--panel); }
.item.done { border-color: var(--ok); }
.item.corrected { border-color: var(--bad); }
.item h4 { margin: 0 0 6px; font-size: 14px; }
.flags { display: flex; gap: 4px; flex-wrap: wrap; margin-top: 6px; }

/* progress bars */
.bar { display: flex; height: 12px; border-radius: 6px; overflow: hidden; background: var(--grey-bg); }
.bar span { display: block; height: 100%; }
.bar .s-verified { background: var(--ok); }
.bar .s-linguist_verified { background: var(--info); }
.bar .s-unverified { background: var(--warn); }
.bar .s-rejected { background: var(--bad); }
.legend { display: flex; gap: 12px; flex-wrap: wrap; font-size: 12px; color: var(--muted); margin-top: 6px; }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 4px; vertical-align: middle; }
.stat { font-size: 26px; font-weight: 700; }

/* dialog and toast */
.overlay { position: fixed; inset: 0; background: rgba(0, 0, 0, .45); display: flex; align-items: center; justify-content: center; padding: 16px; z-index: 50; }
.dialog { background: var(--panel); border-radius: 12px; max-width: 640px; width: 100%; max-height: 90vh; overflow: auto; padding: 20px; }
.toast { position: fixed; left: 50%; bottom: 20px; transform: translateX(-50%); background: var(--ink); color: var(--bg); padding: 10px 16px; border-radius: 8px; opacity: 0; transition: opacity .2s; pointer-events: none; z-index: 60; max-width: 90vw; }
.toast.show { opacity: 1; }
.toast.bad { background: var(--bad); color: #fff; }

.login { max-width: 420px; margin: 40px auto; }
.codes { font-family: var(--mono); display: grid; grid-template-columns: 1fr 1fr; gap: 6px; padding: 12px; background: var(--soft); border-radius: 8px; }
.tabs { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 12px; }
.tabs .btn.active { background: var(--brand); color: var(--brand-ink); border-color: var(--brand); }
.hidden { display: none !important; }

@media (max-width: 1440px) { .brand-tag { display: none; } }

/* voice recording */
.prompt { font-size: 28px; line-height: 1.5; font-weight: 600; padding: 18px; background: var(--soft); border-radius: 10px; margin: 10px 0; }
.small-prompt { font-size: 18px; padding: 10px; }
.btn.big { min-height: 52px; padding: 10px 22px; font-size: 18px; }
.meter { height: 10px; background: var(--grey-bg); border-radius: 5px; overflow: hidden; margin: 10px 0; }
.meter span { display: block; height: 100%; width: 0; background: var(--ok); transition: width .05s linear; }
.meter.hot span { background: var(--bad); }
.record audio { width: 100%; margin: 8px 0; }

/* phones and small tablets */
@media (max-width: 820px) {
  .prompt { font-size: 22px; }
  .grid.two, .grid.three { grid-template-columns: 1fr; }
  .topbar { flex-wrap: wrap; padding: 8px 12px; gap: 8px; }
  .brand-tag { display: none; }
  .nav { order: 3; flex-basis: 100%; }
  .main { padding: 12px; }
  .safety-banner { padding: 6px 12px; }
  .player { top: 96px; }
  .btn { min-height: 44px; }
  .btn.small { min-height: 36px; }
  th, td { padding: 6px; }
  .who .who-name { display: none; }
}