:root {
  --bg: #f4f5f7;
  --panel: #ffffff;
  --ink: #14181f;
  --dim: #6b7280;
  --border: #d7dbe0;
  --gutter: #c2c8d0;
  --gutter-hover: #8a93a0;
  --accent: #2563eb;
  --accent-ink: #ffffff;
  --ok: #16a34a;
  --warn: #d97706;
  --err: #dc2626;
  --toolbar: #ffffff;
}

body[data-theme="night"] {
  --bg: #0d1014;
  --panel: #14181f;
  --ink: #f1f3f6;
  --dim: #93a0b0;
  --border: #2a313b;
  --gutter: #2a313b;
  --gutter-hover: #4a5663;
  --accent: #3b82f6;
  --accent-ink: #ffffff;
  --ok: #34d399;
  --warn: #fbbf24;
  --err: #f87171;
  --toolbar: #11151b;
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
}

body {
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC",
               "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  overflow: hidden;
}

/* ── Toolbar ─────────────────────────────────────────── */
.toolbar {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 8px 12px;
  background: var(--toolbar);
  border-bottom: 1px solid var(--border);
}

.brand-wrap {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  flex-shrink: 0;
  margin-right: 4px;
}

.brand-logo {
  width: 22px;
  height: 22px;
  border-radius: 5px;
  flex-shrink: 0;
}

.brand {
  font-weight: 700;
  letter-spacing: .2px;
  margin-right: 4px;
}

.toolbar-sep {
  width: 1px;
  height: 20px;
  background: var(--border);
  flex-shrink: 0;
  margin: 0 2px;
}

.toolbar-spacer {
  flex: 1 1 auto;
}

.ctl {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--dim);
}
.ctl.group { gap: 4px; }
.ctl .val { min-width: 22px; text-align: center; color: var(--ink); font-variant-numeric: tabular-nums; }

select {
  font: inherit;
  font-size: 13px;
  color: var(--ink);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 4px 6px;
}

.btn {
  font: inherit;
  font-size: 13px;
  color: var(--ink);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 5px 10px;
  cursor: pointer;
  white-space: nowrap;
}
.btn:hover { border-color: var(--gutter-hover); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn.sq { padding: 5px 8px; }
.btn.primary {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
}
.btn.live {
  background: var(--err);
  color: #fff;
  border-color: var(--err);
}

.status {
  margin-left: auto;
  font-size: 13px;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
}
.status.idle { color: var(--dim); }
.status.translating { color: var(--accent); border-color: var(--accent); }
.status.listening { color: var(--accent); border-color: var(--accent); }
.status.ok { color: var(--ok); border-color: var(--ok); }
.status.err { color: var(--err); border-color: var(--err); }

/* ── Hint banner ─────────────────────────────────────── */
.hint {
  flex: 0 0 auto;
  position: relative;
  padding: 8px 36px 8px 12px;
  font-size: 13px;
  color: var(--dim);
  background: var(--toolbar);
  border-bottom: 1px solid var(--border);
}
.hint kbd {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 11px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 5px;
}
.hint-os-label {
  font-size: 12px;
  color: var(--dim);
}
.hint-os-label select {
  font-size: 12px;
  background: var(--bg);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 4px;
}
.hint-x {
  position: absolute;
  top: 4px; right: 8px;
  background: none; border: none;
  color: var(--dim);
  font-size: 18px;
  cursor: pointer;
  line-height: 1;
}
.hint.hidden { display: none; }

/* ── Split layout ────────────────────────────────────── */
.app {
  flex: 1 1 auto;
  display: flex;
  min-height: 0;
  min-width: 0;
}
.app.row { flex-direction: row; }
.app.col { flex-direction: column; }

.panel {
  flex: 1 1 0;
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  background: var(--panel);
  overflow: hidden;
}

.phead {
  flex: 0 0 auto;
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .6px;
  color: var(--dim);
  border-bottom: 1px solid var(--border);
}
.phead .dim { font-weight: 400; text-transform: none; letter-spacing: 0; }

.src, .dst {
  flex: 1 1 auto;
  min-height: 0;
  width: 100%;
  padding: 16px 20px;
  font-size: 14px;
  line-height: 1.5;
  overflow: auto;
  background: transparent;
  color: var(--ink);
}

.src {
  border: none;
  resize: none;
  outline: none;
  font-family: inherit;
}

.dst {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.dst .block { margin: 0 0 .55em 0; }

/* Live interim (not-yet-final) speech, shown faded under the source. */
.interim {
  flex: 0 0 auto;
  padding: 0 20px 14px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--dim);
  font-style: italic;
  overflow-wrap: anywhere;
}
.interim:empty { display: none; }

/* ── Gutter ──────────────────────────────────────────── */
.gutter {
  flex: 0 0 8px;
  background: var(--gutter);
  cursor: col-resize;
  touch-action: none;
}
.gutter:hover { background: var(--gutter-hover); }
.app.col .gutter { cursor: row-resize; }

/* ── Translation off: hide the translation panel ─────── */
body.no-translation #dstPanel,
body.no-translation #gutter { display: none; }
body.no-translation #srcPanel { flex-grow: 1 !important; }

/* ── Collapse the chrome (toolbar + hint) ────────────── */
body.chrome-hidden .toolbar,
body.chrome-hidden .hint { display: none; }

.show-chrome {
  display: none;
  position: fixed;
  top: 8px;
  right: 8px;
  z-index: 50;
  width: 34px;
  height: 34px;
  border-radius: 9px;
  font-size: 15px;
  line-height: 1;
  color: var(--ink);
  background: var(--panel);
  border: 1px solid var(--border);
  opacity: .6;
  cursor: pointer;
}
.show-chrome:hover { opacity: 1; }
body.chrome-hidden .show-chrome { display: block; }

/* ── Mobile: always stacked ──────────────────────────── */
@media (max-width: 760px) {
  .toolbar { gap: 6px; padding: 6px 8px; }
  .brand { width: 100%; }
}