@use 'mixins' as *;

// ---------- Lean editor (/lean) ----------

// The wiki's own Lean workbench. On the /lean address it owns the space
// beside the sidebar the way the map and the plane do — fixed, edge to
// edge. In a book pane it becomes the pane's own box instead.
// (The page transition only fades, so no transform steals the
// fixed positioning.)
.lean-stage {
  position: fixed;
  inset: 0 0 0 var(--sidebar-w);
  transition: left 0.22s ease;
  z-index: 1;
  background: var(--bg);
}

.pane-stage .lean-stage {
  position: absolute;
  inset: 0;
}

// editor left, infoview right — the workbench of every Lean editor, in
// the wiki's own materials. The fold closes the panel's track and the
// editor takes the whole width.
.lean-work {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  transition: grid-template-columns 0.22s ease;
}

.lean-work[data-panel='collapsed'] {
  grid-template-columns: minmax(0, 1fr) 0;
}

.lean-work-editor {
  position: relative;
  min-width: 0;
  background: var(--surface);
}

.lean-work-panel {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  border-left: 1px solid var(--border);
  background: var(--bg-elev);
  overflow: hidden;
  visibility: visible;
  transition: opacity 0.18s ease, visibility 0s;
}

.lean-work[data-panel='collapsed'] .lean-work-panel {
  opacity: 0;
  visibility: hidden;
  // out of sight and out of the reader's way — only after the track closes
  transition: opacity 0.18s ease, visibility 0s 0.22s;
}

// status row: whose Lean, doing what, and the door to the classic client
.lean-work-status {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border-bottom: 1px solid var(--border);
  font-size: 0.74rem;
  color: var(--muted);

  .lean-work-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--faint);
    flex-shrink: 0;
  }

  &[data-phase='ready'] .lean-work-dot { background: var(--success); }
  &[data-phase='lost'] .lean-work-dot { background: var(--danger); }
  &[data-phase='connecting'] .lean-work-dot,
  &[data-phase='initializing'] .lean-work-dot { background: var(--accent); }

  // elaborating: the amber pulse every Lean editor wears while working
  &[data-busy='true'] .lean-work-dot {
    background: #d97706;
    animation: lean-pulse 1s ease-in-out infinite;
  }

  [data-theme='dark'] &[data-busy='true'] .lean-work-dot { background: #f5a83c; }
}

@keyframes lean-pulse {
  50% { opacity: 0.35; }
}

.lean-work-phase {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

// the status row's two quiet doors: the classic client outside, and the fold
.lean-work-classic,
.lean-work-collapse {
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border-radius: 7px;
  color: var(--faint);
  transition: color 0.15s ease, background 0.15s ease;

  &:hover {
    color: var(--text);
    background: var(--surface-2);
  }
}

.lean-work-classic {
  margin-left: auto;
}

// the panes below: Goals and Messages, the wiki's own infoview
.lean-work-goals,
.lean-work-messages {
  padding: 10px 12px 14px;
  overflow-y: auto;
  min-height: 0;

  h3 {
    margin: 0 0 8px;
    font-size: 0.66rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--faint);
  }

  pre {
    margin: 0 0 8px;
    padding: 9px 11px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--surface);
    color: var(--text);
    font-family: ui-monospace, 'JetBrains Mono', 'Cascadia Code', 'Fira Code', Menlo, Consolas, monospace;
    font-size: 0.78rem;
    line-height: 1.55;
    white-space: pre-wrap;
    word-break: break-word;
  }
}

.lean-work-goals { flex: 1 1 55%; }
.lean-work-messages {
  flex: 1 1 45%;
  border-top: 1px solid var(--border);
}

.lean-work-messages ul {
  list-style: none;
  margin: 0;
  padding: 0;

  li { position: relative; }
}

.lean-work-msg-line {
  font-family: ui-monospace, 'JetBrains Mono', Menlo, Consolas, monospace;
  font-size: 0.66rem;
  color: var(--faint);
}

.lean-work-none {
  margin: 0;
  font-size: 0.8rem;
  color: var(--faint);
}

// the fold's other half: while the panel lies collapsed, this quiet card
// waits at the editor's top-right corner to pull the infoview back
.lean-panel-open {
  position: absolute;
  top: 10px;
  right: 12px;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  border: 1px solid var(--border);
  border-radius: 11px;
  background: color-mix(in srgb, var(--bg-elev) 84%, transparent);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 650;
  white-space: nowrap;
  transition: color 0.15s, background-color 0.15s;

  &:hover { color: var(--text); background: var(--surface-2); }
}

// until Lean answers — and when the server is not there at all — the
// wiki speaks for the editor
.lean-state {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 14px;
  padding: 24px;
  background: var(--bg);

  .banner { width: min(520px, 100%); }
}

.lean-spinner {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 2px solid color-mix(in srgb, var(--accent) 25%, transparent);
  border-top-color: var(--accent);
  animation: lean-spin 0.7s linear infinite;
}

@keyframes lean-spin {
  to { transform: rotate(1turn); }
}

.lean-loading-text {
  margin: 0;
  font-size: 0.86rem;
  color: var(--muted);
}

// small screens: the panel lies under the editor instead of beside it —
// and collapses into the bottom edge the same way
@media (max-width: 900px) {
  .lean-work {
    grid-template-columns: none;
    grid-template-rows: minmax(0, 1fr) minmax(0, 40%);
    transition: grid-template-rows 0.22s ease;
  }

  .lean-work[data-panel='collapsed'] {
    grid-template-columns: none;
    grid-template-rows: minmax(0, 1fr) minmax(0, 0%);
  }

  .lean-work-panel {
    border-left: 0;
    border-top: 1px solid var(--border);
  }
}

@media (prefers-reduced-motion: reduce) {
  .lean-stage { transition: none; }
  .lean-work { transition: none; }
  .lean-work-panel { transition: opacity 0.01s ease, visibility 0s; }
  .lean-work[data-panel='collapsed'] .lean-work-panel { transition: opacity 0.01s ease, visibility 0s; }
  .lean-spinner { animation-duration: 1.4s; }
  .lean-work-status[data-busy='true'] .lean-work-dot { animation: none; }
}