:root {
  color-scheme: dark;
  --bg: #0f1115;
  --bg-topbar: #12141b;
  --bg-panel: #171922;
  --bg-elevated: #1e2230;
  --border: #262a35;
  --border-strong: #2f3446;
  --text: #e8e8ec;
  --text-secondary: #c9d1d9;
  --text-muted: #9aa0a6;
  --text-dim: #777;
  --text-dimmer: #666;
  --accent: #2a6df5;
  --secondary-btn-bg: #33363f;
  --secondary-btn-text: #ffffff;
  --disabled-btn-bg: #444;
  --disabled-btn-text: #b0b3ba;
  --danger: #e5484d;
  --danger-hover: #c73f43;
  --speaker: #7dd3fc;
  --success: #4ade80;
  --error: #f87171;
  --overlay: rgba(0,0,0,.6);
}
:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f4f5f8;
  --bg-topbar: #ffffff;
  --bg-panel: #ffffff;
  --bg-elevated: #eef0f5;
  --border: #e0e2ea;
  --border-strong: #ccd0dc;
  --text: #1a1d24;
  --text-secondary: #3a3f4a;
  --text-muted: #666c78;
  --text-dim: #7a8090;
  --text-dimmer: #8a8f9c;
  --accent: #2a6df5;
  --secondary-btn-bg: #dbdfea;
  --secondary-btn-text: #1a1d24;
  --disabled-btn-bg: #d8dae2;
  --disabled-btn-text: #8a8f9c;
  --danger: #e5484d;
  --danger-hover: #c73f43;
  --speaker: #0b6ea8;
  --success: #1a9a56;
  --error: #d92d33;
  --overlay: rgba(0,0,0,.35);
}
html { font-size: 100%; } /* rem base — scaled by fontSizeBtn to resize all text on the page */
html, body { height: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  margin: 0; padding: 0;
  background: var(--bg); color: var(--text);
  display: flex; flex-direction: column; overflow: hidden;
}
h1 { font-size: 1.25rem; font-weight: 600; }
#appRoot { flex: 1; display: flex; flex-direction: column; min-height: 0; overflow: hidden; }
.row { display: flex; gap: 12px; align-items: center; margin-bottom: 16px; flex-wrap: wrap; }
button {
  background: var(--accent); color: white; border: none; border-radius: 8px;
  padding: 10px 16px; font-size: 0.875rem; cursor: pointer;
}
button:disabled { background: var(--disabled-btn-bg); color: var(--disabled-btn-text); cursor: not-allowed; }
button.secondary { background: var(--secondary-btn-bg); color: var(--secondary-btn-text); }
input[type=email], input[type=password], input[type=text] {
  background: var(--bg-elevated); border: 1px solid var(--border-strong); border-radius: 8px; color: var(--text);
  padding: 9px 12px; font-size: 0.875rem;
}
#status { font-size: 0.8125rem; color: var(--text-muted); }
.panel {
  background: var(--bg-panel); border: 1px solid var(--border); border-radius: 10px;
  padding: 16px; margin-bottom: 16px;
}
.panel h2 { margin: 0 0 10px; font-size: 0.875rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: .04em; }
#transcript { min-height: 80px; line-height: 1.6; white-space: pre-wrap; }
#transcript .speaker { color: var(--speaker); font-weight: 600; }
.interim { color: var(--text-dim); }
#questions { display: flex; flex-direction: column; gap: 8px; }
.question-item {
  background: var(--bg-elevated); border: 1px solid var(--border-strong); border-radius: 8px;
  padding: 10px 12px; cursor: pointer; text-align: left; color: var(--text); font-size: 0.875rem;
}
.question-item:hover { border-color: var(--accent); }
.qa-card {
  background: var(--bg-elevated); border-radius: 8px; padding: 12px; margin-bottom: 10px;
}
.qa-card .q { font-weight: 600; margin-bottom: 6px; }
.qa-card .a { color: var(--text-secondary); white-space: pre-wrap; line-height: 1.5; }
.qa-card .a::after { content: "▍"; opacity: .5; }
.qa-card.done .a::after { content: ""; }
.qa-screenshot { margin: 4px 0 10px; }
.qa-screenshot-img {
  display: block; max-width: 260px; max-height: 180px; border-radius: 8px;
  border: 1px solid var(--border-strong); cursor: zoom-in; object-fit: cover;
}
.qa-screenshot-loading { font-size: 0.8125rem; color: var(--text-dimmer); }
#creditsMessage { font-size: 0.8125rem; }
#creditsMessage.error { color: var(--error); }
#creditsMessage.ok { color: var(--success); }
.pkg-btn { display: flex; flex-direction: column; align-items: flex-start; gap: 2px; padding: 10px 14px; }
.pkg-btn .price { font-weight: 700; }
.pkg-btn .label { font-size: 0.75rem; opacity: .85; }
.pkg-btn .credits { font-size: 0.7rem; opacity: .65; }
#balancePill {
  background: var(--bg-elevated); border: 1px solid var(--border-strong); border-radius: 999px;
  padding: 6px 14px; font-size: 0.8125rem; font-variant-numeric: tabular-nums;
}
.icon-btn {
  background: transparent; color: var(--text-muted); font-size: 1.25rem; line-height: 1;
  padding: 2px 6px; border-radius: 6px;
}
.icon-btn:hover { background: var(--border); }
.modal-overlay {
  position: fixed; inset: 0; background: var(--overlay);
  display: flex; align-items: center; justify-content: center;
  z-index: 100; padding: 16px;
}
.modal {
  background: var(--bg-panel); border: 1px solid var(--border); border-radius: 12px;
  padding: 20px 24px; max-width: 420px; width: 100%;
}
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 4px; }
.modal-header h3 { margin: 0; font-size: 1rem; }
.modal-text { font-size: 0.8125rem; color: var(--text-secondary); line-height: 1.5; }

/* --- Top bar + two-pane live session layout --- */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 20px; border-bottom: 1px solid var(--border); background: var(--bg-topbar);
  flex-shrink: 0; gap: 16px; flex-wrap: wrap;
}
.topbar-left {
  display: flex; align-items: center; gap: 8px; font-size: 0.9375rem; font-weight: 600;
  color: inherit; text-decoration: none; cursor: pointer;
}
.topbar-left .logo-emoji { width: 20px; height: 20px; border-radius: 5px; display: block; }
.topbar-right { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.pill {
  background: var(--bg-elevated); border: 1px solid var(--border-strong); border-radius: 999px;
  padding: 5px 12px; font-size: 0.75rem; color: var(--text-muted); font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.switch-label {
  display: flex; align-items: center; gap: 6px; font-size: 0.8125rem; color: var(--text-secondary);
  cursor: pointer; user-select: none; white-space: nowrap;
}
.switch-label input { accent-color: var(--accent); width: 16px; height: 16px; cursor: pointer; }
.topbar .icon-btn {
  border: 1px solid var(--border-strong); font-size: 0.8125rem; font-weight: 600; padding: 6px 10px;
}
.danger-btn {
  background: var(--danger); color: #fff; border: none; border-radius: 8px;
  padding: 8px 14px; font-size: 0.8125rem; cursor: pointer;
}
.danger-btn:hover { background: var(--danger-hover); }

.app-shell { flex: 1; display: flex; min-height: 0; overflow: hidden; }
.left-pane {
  width: 44%; min-width: 320px; max-width: 560px; overflow-y: auto;
  padding: 20px; box-sizing: border-box; border-right: 1px solid var(--border);
}
.right-pane { flex: 1; display: flex; flex-direction: column; min-width: 320px; }
.right-pane-header {
  padding: 14px 20px; border-bottom: 1px solid var(--border); font-size: 0.875rem;
  font-weight: 600; color: var(--text); flex-shrink: 0; display: flex;
  align-items: center; gap: 8px;
}
.right-messages { flex: 1; overflow-y: auto; padding: 20px; }
.right-input-row {
  display: flex; gap: 10px; padding: 14px 20px; border-top: 1px solid var(--border); flex-shrink: 0;
}
.right-input-row input { flex: 1; }
.empty-state {
  color: var(--text-dimmer); font-size: 0.875rem; text-align: center; margin-top: 60px; line-height: 1.7;
}

@media (max-width: 820px) {
  .app-shell { flex-direction: column; overflow-y: auto; }
  .left-pane, .right-pane { width: 100%; max-width: none; border-right: none; border-bottom: 1px solid var(--border); }
  .left-pane { overflow-y: visible; }
  .right-messages { min-height: 240px; }
}

/* --- Floating preview of the shared tab/window/screen --- */
.share-preview {
  position: fixed; top: 64px; right: 16px; width: 260px;
  background: #000; border-radius: 10px; overflow: hidden;
  box-shadow: 0 8px 28px rgba(0,0,0,.55); border: 1px solid var(--border);
  z-index: 50; display: none;
}
.share-preview-toolbar {
  display: flex; align-items: center; gap: 6px; padding: 6px;
  background: rgba(15,17,21,.92);
}
.share-preview-toolbar button {
  background: rgba(255,255,255,.08); color: #e8e8ec; border: none; border-radius: 6px;
  padding: 4px 8px; font-size: 0.6875rem; cursor: pointer; white-space: nowrap;
}
.share-preview-toolbar button:hover { background: rgba(255,255,255,.2); }
.share-preview-toolbar .spacer { flex: 1; }
.share-preview-toolbar .stop-btn { background: rgba(229,72,77,.85); }
.share-preview-toolbar .stop-btn:hover { background: #e5484d; }
.share-preview video {
  width: 100%; aspect-ratio: 16 / 9; object-fit: cover; display: block; background: #000;
}
.share-preview-label {
  font-size: 0.6875rem; color: #9aa0a6; padding: 5px 8px; background: rgba(15,17,21,.85);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
@media (max-width: 640px) {
  .share-preview { width: 180px; top: 60px; right: 10px; }
}