:root {
  --bg: #141414;
  --fg: #e6e6e6;
  --muted: #9a9a9a;
  --panel: #1c1c1c;
  --border: #2a2a2a;
  --accent: #d97706;
  --accent-fg: #fff;
  --ok: #22c55e;
  --err: #ef4444;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; height: 100%; background: var(--bg); color: var(--fg); font: 14px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
.hidden { display: none !important; }

button, select, input, textarea {
  font: inherit; color: inherit;
  background: var(--panel); border: 1px solid var(--border);
  padding: 6px 10px; border-radius: 6px;
}
button { cursor: pointer; }
button:hover { border-color: #444; }
input:focus, textarea:focus, select:focus { outline: none; border-color: var(--accent); }
button:disabled { opacity: 0.5; cursor: not-allowed; }

.error { color: var(--err); margin-top: 8px; min-height: 1em; }

/* ─── Login ──────────────────────────────────────────────── */
.login { display: flex; height: 100vh; align-items: center; justify-content: center; }
.login form { display: flex; flex-direction: column; gap: 10px; width: 320px; padding: 28px; border: 1px solid var(--border); border-radius: 12px; background: var(--panel); }
.login h1 { margin: 0 0 10px 0; font-size: 18px; font-weight: 500; }
.login button { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); padding: 10px; }

/* ─── App layout ─────────────────────────────────────────── */
#app { display: grid; grid-template-rows: 48px 1fr auto auto; height: 100vh; }

.topbar { display: flex; align-items: center; gap: 8px; padding: 0 14px; border-bottom: 1px solid var(--border); background: var(--panel); }
.topbar .brand { font-weight: 600; margin-right: 6px; }
.topbar .spacer { flex: 1; }
.topbar .userBadge { color: var(--muted); font-size: 12px; margin-right: 4px; }
.topbar select { min-width: 220px; }

/* ─── Chat ──────────────────────────────────────────────── */
.chat { overflow-y: auto; padding: 16px; }
.messages { max-width: 880px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.msg { padding: 10px 14px; border-radius: 8px; white-space: pre-wrap; word-wrap: break-word; }
.msg.user { background: #222; align-self: flex-end; max-width: 78%; }
.msg.assistant { background: var(--panel); border: 1px solid var(--border); max-width: 100%; }
.msg.system { background: #0f1f2f; border: 1px solid #1e3a5f; color: #bcd4ff; font-size: 13px; }
.msgMeta { color: var(--muted); font-size: 11px; margin-top: 6px; }

.cacheHit { background: #221b08; border: 1px solid #4d3c11; padding: 10px 12px; border-radius: 8px; }
.cacheHit .title { color: #f5c46d; font-size: 12px; margin-bottom: 6px; }
.cacheHit .actions { display: flex; gap: 8px; margin-top: 8px; }

/* ─── Uploader ──────────────────────────────────────────── */
.uploader { border-top: 1px solid var(--border); padding: 10px 14px; background: var(--panel); }
.dropZone { color: var(--muted); font-size: 13px; border: 1px dashed var(--border); padding: 8px 12px; border-radius: 6px; }
.dropZone.drag { border-color: var(--accent); color: var(--fg); }
.dropZone .filePicker { color: var(--accent); cursor: pointer; text-decoration: underline; }

.uploadCounter {
  color: var(--muted); font-size: 12px; margin: 6px 2px 0 2px; min-height: 1em;
}

.uploadList {
  list-style: none; margin: 6px 0 0 0; padding: 0;
  display: flex; flex-wrap: wrap; gap: 6px;
  max-height: 120px; overflow-y: auto;
}
.uploadList li {
  padding: 4px 10px; background: #111; border: 1px solid var(--border);
  border-radius: 999px; font-size: 12px;
  transition: opacity 0.15s;
}
.uploadList li.pending { opacity: 0.45; }
.uploadList li.ok { border-color: var(--ok); }
.uploadList li.ok::after { content: " ✓"; color: var(--ok); }
.uploadList li.err { border-color: var(--err); }
.uploadList li.err::after { content: " ✗"; color: var(--err); }

/* ─── Composer ──────────────────────────────────────────── */
.composer { display: flex; gap: 8px; padding: 10px 14px; border-top: 1px solid var(--border); background: var(--panel); }
.composer textarea { flex: 1; resize: vertical; min-height: 44px; max-height: 200px; }
.composer button { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); padding: 10px 18px; }

/* ─── Modal ──────────────────────────────────────────────── */
.modal { position: fixed; inset: 0; background: rgba(0,0,0,0.6); display: flex; align-items: center; justify-content: center; z-index: 100; }
.modalInner { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; width: min(720px, 92vw); max-height: 85vh; display: flex; flex-direction: column; }
.modalHeader { display: flex; align-items: center; justify-content: space-between; padding: 12px 16px; border-bottom: 1px solid var(--border); }
.modalHeader h2 { margin: 0; font-size: 16px; font-weight: 600; }
.modalBody { padding: 14px 16px; overflow-y: auto; }
.iconBtn { background: transparent; border: none; padding: 4px 8px; color: var(--muted); font-size: 16px; }

.filesTable { width: 100%; border-collapse: collapse; font-size: 13px; }
.filesTable th, .filesTable td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--border); }
.filesTable th { color: var(--muted); font-weight: 500; }
.statusPill { padding: 2px 8px; border-radius: 999px; font-size: 11px; }
.statusPill.ready { background: #0f2f17; color: var(--ok); }
.statusPill.failed { background: #2f0f0f; color: var(--err); }
.statusPill.processing { background: #2f250f; color: #f5c46d; }

.prefsForm { display: grid; gap: 12px; }
.prefsForm label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--muted); }
.prefsForm input, .prefsForm textarea { background: #111; }