:root {
  --bg: #0e1116;
  --card: #171c24;
  --text: #e8ecf1;
  --muted: #93a0b0;
  --accent: #4da3ff;
  --accent-2: #2ecc9a;
  --border: #242c38;
  --mono: ui-monospace, "Cascadia Code", Consolas, monospace;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f5f7fa;
    --card: #ffffff;
    --text: #17202b;
    --muted: #5a6a7a;
    --border: #dde4ec;
  }
}
* { box-sizing: border-box; margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", sans-serif;
  min-height: 100vh;
}
main { max-width: 720px; margin: 0 auto; padding: 40px 20px 60px; }
header { text-align: center; margin-bottom: 28px; }
h1 { font-size: 2rem; letter-spacing: -0.5px; }
.tagline { margin-top: 6px; font-size: 1.05rem; }
.privacy { margin-top: 10px; color: var(--muted); font-size: 0.9rem; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 22px;
  margin-bottom: 18px;
}
label { display: block; font-weight: 600; margin-bottom: 6px; }
.hint { color: var(--muted); font-weight: 400; font-size: 0.85rem; }
select {
  width: 100%;
  padding: 10px 12px;
  border-radius: 9px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 0.95rem;
  margin-bottom: 16px;
}
#dropzone {
  border: 2px dashed var(--border);
  border-radius: 12px;
  padding: 34px 16px;
  text-align: center;
  cursor: pointer;
  transition: border-color .15s, background .15s;
  margin-bottom: 16px;
}
#dropzone:hover, #dropzone.drag { border-color: var(--accent); background: rgba(77,163,255,.06); }
#dropzone.hasfile { border-color: var(--accent-2); }
button {
  width: 100%;
  padding: 13px;
  border: 0;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
  font-size: 1.05rem;
  font-weight: 600;
  cursor: pointer;
}
button:disabled { opacity: .45; cursor: not-allowed; }
button.ghost {
  width: auto;
  padding: 7px 14px;
  font-size: 0.85rem;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}
button.ghost:hover { border-color: var(--accent); }
.bar {
  height: 8px;
  background: var(--bg);
  border-radius: 6px;
  overflow: hidden;
  margin-top: 12px;
}
#barFill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width .3s;
}
#status { color: var(--muted); font-size: 0.95rem; }
.row { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; margin-bottom: 12px; }
.btns { display: flex; gap: 8px; }
#transcript {
  font-family: var(--mono);
  font-size: 0.88rem;
  white-space: pre-wrap;
  max-height: 55vh;
  overflow-y: auto;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px;
}
#transcript .ts { color: var(--accent); user-select: none; }
.howto {
  text-align: left;
  max-width: 560px;
  margin: 14px auto 0;
  color: var(--muted);
  font-size: 0.88rem;
}
.howto summary { cursor: pointer; color: var(--accent); }
.howto ul { margin: 8px 0 0 18px; display: grid; gap: 6px; }
.check {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 400;
  font-size: 0.92rem;
  margin-bottom: 16px;
  cursor: pointer;
}
.check input { accent-color: var(--accent); width: 16px; height: 16px; }
footer { text-align: center; color: var(--muted); font-size: 0.8rem; margin-top: 30px; }
footer a { color: var(--muted); }