:root {
  --bg: #0f1419;
  --bg2: #1a2332;
  --card: #1e2a3a;
  --border: #2d3d52;
  --text: #e7eef7;
  --muted: #8aa0b8;
  --accent: #3d9cf0;
  --accent2: #5eead4;
  --danger: #f87171;
  --ok: #4ade80;
  --radius: 12px;
  font-family: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); min-height: 100%; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 1.25rem 3rem; }
header.top {
  display: flex; align-items: center; gap: 1rem;
  padding: 0.9rem 1.25rem; border-bottom: 1px solid var(--border);
  background: var(--bg2); position: sticky; top: 0; z-index: 10;
}
header.top .brand { font-weight: 700; letter-spacing: .02em; color: var(--text); font-size: 1.05rem; }
header.top nav { display: flex; gap: 1rem; margin-left: 1rem; }
header.top .sp { flex: 1; }
.btn, button, input[type=submit] {
  background: var(--accent); color: #041018; border: 0; border-radius: 8px;
  padding: .45rem .9rem; font-weight: 600; cursor: pointer; font-size: .95rem;
}
.btn.ghost, button.ghost { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn.danger { background: var(--danger); color: #1a0000; }
input, textarea, select {
  background: var(--bg); color: var(--text); border: 1px solid var(--border);
  border-radius: 8px; padding: .5rem .7rem; width: 100%; font: inherit;
}
label { display: block; font-size: .85rem; color: var(--muted); margin: .6rem 0 .25rem; }
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.1rem 1.25rem; margin: 1rem 0;
}
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1rem; }
h1 { font-size: 1.6rem; margin: 1.4rem 0 .5rem; }
h2 { font-size: 1.15rem; margin: 1.2rem 0 .4rem; }
.muted { color: var(--muted); }
.row { display: flex; gap: .75rem; align-items: center; flex-wrap: wrap; }
.badge { font-size: .75rem; padding: .15rem .5rem; border-radius: 999px; background: var(--bg); border: 1px solid var(--border); }
.badge.ready { border-color: var(--ok); color: var(--ok); }
.badge.failed { border-color: var(--danger); color: var(--danger); }
.seg { padding: .55rem 0; border-bottom: 1px solid var(--border); cursor: pointer; }
.seg:hover { background: rgba(61,156,240,.06); }
.seg .who { font-weight: 600; color: var(--accent2); margin-right: .5rem; }
.seg .ts { font-variant-numeric: tabular-nums; color: var(--muted); font-size: .8rem; margin-right: .6rem; }
.auth { max-width: 420px; margin: 4rem auto; }
.bubble { padding: .7rem 1rem; border-radius: 10px; margin: .5rem 0; }
.bubble.you { background: #24364c; }
.bubble.bot { background: #16202c; border: 1px solid var(--border); }
footer { color: var(--muted); font-size: .8rem; margin-top: 2rem; }
pre.json { white-space: pre-wrap; font-size: .85rem; overflow: auto; }
audio { width: 100%; margin: .5rem 0 1rem; }
.small { font-size: .8rem; }
label.check { display: flex; align-items: center; gap: .45rem; margin: .6rem 0 .25rem; }
label.check input[type=checkbox] { width: auto; }
label.inline { display: inline; margin: 0; }
input.narrow { width: 6rem; }
h3.talk {
  font-size: 1rem; margin: 1.4rem 0 .3rem; padding-top: .8rem;
  border-top: 2px solid var(--accent2); color: var(--accent2);
}
h3.talk:first-child { border-top: 0; padding-top: 0; margin-top: .2rem; }
/* Busy cursor while a large upload streams; !important beats button/link cursors. */
html.busy, html.busy * { cursor: wait !important; }
html.busy button[disabled] { opacity: .7; }