/* embedded JupyterLab */
.jlab-hint { font: 13px var(--mono); color: var(--text-3); margin: 4px 0 6px; min-height: 18px; }
.jlab-frame { display: block; width: 100%; height: calc(100vh - 260px); min-height: 560px;
  border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
.jlab-frame[hidden] { display: none; }   /* display:block would otherwise beat the hidden attribute */

/* local JupyterLab («На моём компьютере») — lab.js */
/* trainer buttons are scoped to .pr-trainer — give the lab pane the same look */
#sub-jlab .pr-btn { font: inherit; font-size: 14px; font-weight: 600; border-radius: 12px; padding: 9px 16px;
  border: 1px solid transparent; line-height: 1.2; white-space: nowrap; cursor: pointer;
  transition: background .15s, border-color .15s, color .15s; }
#sub-jlab .pr-btn:disabled { opacity: .45; cursor: default; }
#sub-jlab .pr-primary { background: var(--brand); color: var(--on-brand); }
#sub-jlab .pr-primary:hover:not(:disabled) { background: var(--brand-hover); }
#sub-jlab .pr-secondary { background: var(--bg); border-color: var(--line); }
#sub-jlab .pr-secondary:hover { background: var(--line); }
#sub-jlab .pr-ghost { background: none; color: var(--text-2); }
#sub-jlab .pr-ghost:hover { background: var(--subtle); color: var(--text); }
#sub-jlab .pr-sm { padding: 5px 10px; font-size: 13px; }
.lab-bar { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin: 12px 0 4px; }
.lab-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--line-strong); display: inline-block; }
.lab-dot.ok { background: var(--ok); box-shadow: 0 0 0 3px var(--ok-soft); }
.lab-status { font-size: 13px; color: var(--text-3); }
.lab-status.warn { color: var(--warn); }
.lab-bar > .pr-btn { margin-left: auto; }
.lab-card { border: 1px solid var(--line); border-radius: var(--radius); background: var(--subtle); padding: 18px 20px; margin: 8px 0 12px; max-width: 760px; }
.lab-card h3 { margin: 0 0 6px; font-size: 17px; }
.lab-card p { margin: 0 0 12px; color: var(--text-3); font-size: 14px; line-height: 1.5; }
.lab-actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.lab-os { display: inline-flex; gap: 4px; margin-bottom: 10px; }
.lab-os button { font: inherit; font-size: 13px; padding: 5px 12px; border: 1px solid var(--line); background: var(--bg);
  color: var(--text-3); border-radius: 999px; cursor: pointer; }
.lab-os button.on { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }
.lab-cmd { display: flex; gap: 8px; align-items: flex-start; margin-bottom: 10px; }
.lab-cmd code { flex: 1; display: block; font: 12.5px/1.55 var(--mono); background: var(--bg); border: 1px solid var(--line);
  border-radius: var(--radius-sm); padding: 10px 12px; white-space: pre-wrap; word-break: break-all; user-select: all; }
.lab-note { font-size: 13px; }
.lab-warn { font-size: 13px; color: var(--warn); }
.lab-details { margin-top: 10px; font-size: 13px; }
.lab-details summary { cursor: pointer; color: var(--text-3); }
.lab-details p { margin: 8px 0 0; }
.lab-foot { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 8px; }
.lab-foot .jlab-hint { margin: 0; }
.lab-badge { font-size: 12px; font-weight: 600; color: var(--ok); background: var(--ok-soft); border-radius: 999px; padding: 3px 10px; }
/* task checklist — a drawer sliding over the lab frame's left edge (lab.js).
   The violet rail tab is the handle; the panel never eats layout width. */
.lab-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 14px; align-items: start; }
.lab-main { position: relative; }
.lab-rail { position: absolute; left: 0; top: 84px; z-index: 6; writing-mode: vertical-rl;
  font: 700 12.5px var(--font); letter-spacing: .05em; color: var(--on-brand); background: var(--brand);
  border: 0; border-radius: 0 10px 10px 0; padding: 16px 9px; cursor: pointer;
  display: grid; place-items: center; transition: background .15s; }
.lab-rail:hover { background: var(--brand-hover); }
.lab-rail[hidden] { display: none; }
.lab-scrim { position: absolute; inset: 0; z-index: 7; background: rgba(10, 10, 12, .28); border-radius: var(--radius); }
.lab-tasks { position: absolute; top: 0; left: 0; bottom: 0; z-index: 8; width: min(330px, 92%);
  border: 1px solid var(--line); border-left: 0; border-radius: 0 var(--radius) var(--radius) 0;
  background: var(--bg); padding: 16px 16px 10px; overflow-y: auto; overscroll-behavior: contain;
  transform: translateX(-104%); visibility: hidden;
  transition: transform .25s cubic-bezier(.2, .8, .2, 1), visibility .25s; }
.lab-tasks.is-open { transform: none; visibility: visible; }
.lab-tasks-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 8px; }
.lab-tasks-h { margin: 0 0 4px; font-size: 15px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.lab-tasks-prog { font-size: 12px; font-weight: 700; color: var(--text-3); background: var(--bg);
  border: 1px solid var(--line); border-radius: 999px; padding: 2px 9px; }
.lab-tasks-prog.is-done { color: var(--ok); border-color: var(--ok); background: var(--ok-soft); }
.lab-tasks-hint { margin: 0 0 10px; font-size: 12.5px; line-height: 1.45; color: var(--text-3); }
.lab-tasklist { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; }
.lab-task { display: flex; gap: 9px; width: 100%; text-align: left; font: inherit; border: 0; background: none;
  padding: 8px 9px; border-radius: var(--radius-sm); cursor: pointer; align-items: flex-start; }
.lab-task:hover { background: var(--bg); }
.lab-task-check { flex: none; width: 18px; height: 18px; margin-top: 1px; border-radius: 50%;
  border: 1.5px solid var(--line-strong); color: var(--ok); font-size: 12px; font-weight: 700;
  display: grid; place-items: center; line-height: 1; }
.lab-task.is-done .lab-task-check { border-color: var(--ok); background: var(--ok-soft); }
.lab-task.is-done .lab-task-body b { color: var(--text-3); text-decoration: line-through; text-decoration-thickness: 1px; }
.lab-task-body { display: grid; gap: 2px; min-width: 0; }
.lab-task-body b { font-size: 13.5px; font-weight: 600; line-height: 1.3; }
.lab-task-meta { font-size: 11.5px; color: var(--text-3); font-family: var(--mono); }
.lab-pick-toggle { margin-top: 10px; font-size: 13px; color: var(--text-3); cursor: pointer;
  padding: 6px 0; background: none; border: 0; text-decoration: underline; text-decoration-color: var(--line-strong);
  text-underline-offset: 3px; }
.lab-pick-toggle:hover { color: var(--text); text-decoration-color: currentColor; }
.lab-pick-mod { margin-top: 12px; }
.lab-pick-mod h4 { font-size: 12px; font-weight: 600; color: var(--text-3); margin: 0 0 6px; }
.lab-pick { display: flex; align-items: center; gap: 10px; width: 100%; text-align: left; font: inherit;
  border: 0; background: none; padding: 7px 9px; border-radius: var(--radius-sm); cursor: pointer; }
.lab-pick:hover { background: var(--subtle); }
.lab-pick-name { flex: 1; min-width: 0; font-size: 13.5px; font-weight: 500; line-height: 1.3; }
.lab-pick-meta { flex: none; font-size: 11.5px; color: var(--text-3); font-family: var(--mono); }

@media (max-width: 640px) { .lab-cmd { flex-direction: column; } .lab-bar > .pr-btn { margin-left: 0; } }