/* The existing paper/Onest/Georgia cabinet, with a single conversational surface. */
.cabinet-learning {
  --ws-ink: var(--ink, #18212f);
  --ws-muted: var(--muted, #606b7c);
  --ws-rule: var(--border, #ddd8ce);
  --ws-accent: var(--amber-deep, #844910);
  --ws-paper: var(--paper, #fffdf9);
  --ws-hover: var(--sidebar-bg, #f1eee7);
  --ws-radius: 12px;
  --ws-fast: 150ms;
  --ws-ease: cubic-bezier(.2, 0, 0, 1);
}
.cabinet-learning .workspace-header { padding: 16px 32px; border-bottom: 1px solid var(--ws-rule); }
.cabinet-learning .learning-shell:has(.tutor-room) { grid-template-columns: minmax(0, 1fr); }
.cabinet-learning .workspace-heading { display: flex; align-items: flex-start; justify-content: space-between; flex-wrap: wrap; gap: 8px 16px; }
.cabinet-learning .workspace-heading-actions { display: flex; align-items: center; gap: 8px; }
.cabinet-learning .workspace-heading h2 { font-size: 20px; line-height: 1.4; margin: 8px 0 0; }
.cabinet-learning #workspace-actions, .cabinet-learning #workspace-trail { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.cabinet-learning #workspace-trail a { color: var(--ws-accent); font-size: 13px; padding-block: 8px; }
.cabinet-learning .workspace-reading { padding-block: 24px 40px; }
.cabinet-learning .workspace-statement, .cabinet-learning .workspace-theory { font: 18px/1.8 Georgia, serif; }
.cabinet-learning .workspace-statement { padding-bottom: 24px; margin-bottom: 24px; border-bottom: 1px solid var(--ws-rule); }
.cabinet-learning .workspace-message-text { white-space: pre-wrap; overflow-wrap: anywhere; }
.cabinet-learning #workspace-messages .assistant .workspace-message-text { font: 18px/1.8 Georgia, serif; }
.cabinet-learning .workspace-message-text p { margin: 0 0 16px; }
.cabinet-learning .workspace-message-text p:last-child { margin-bottom: 0; }
.cabinet-learning .workspace-message-text ul, .cabinet-learning .workspace-message-text ol { padding-left: 24px; margin-block: 16px; }
.cabinet-learning .workspace-message-text li + li { margin-top: 8px; }
.cabinet-learning .workspace-message-text pre { overflow-x: auto; white-space: pre; max-width: 100%; }
.cabinet-learning .workspace-message-text code { font-size: .9em; }
.cabinet-learning .workspace-message-text .katex-display { overflow-x: auto; overflow-y: hidden; padding-block: 8px; }
.cabinet-learning .workspace-card-links { display: grid; gap: 8px; margin-block: 16px; }
.cabinet-learning .workspace-card-link { display: block; text-decoration: none; padding: 12px 0; border-bottom: 1px solid var(--ws-rule); color: var(--ws-ink); font: 500 15px/1.5 Onest, sans-serif; }
.cabinet-learning .workspace-card-link::after { content: ' ↗'; color: var(--ws-accent); }
.cabinet-learning .workspace-card-link:hover { color: var(--ws-accent); }
.cabinet-learning .workspace-card-link:focus-visible, .cabinet-learning .workspace-composer textarea:focus-visible { outline: 2px solid var(--ws-accent); outline-offset: 3px; }
.cabinet-learning .workspace-theory section { scroll-margin-top: 16px; padding-top: 24px; }
.cabinet-learning .workspace-theory h3 { font: 600 20px/1.4 Onest, sans-serif; }
.cabinet-learning .workspace-turn-status { display: flex; gap: 12px; align-items: center; margin-block: 24px; color: var(--ws-muted); font-size: 14px; }
.cabinet-learning .workspace-turn-status[hidden] { display: none; }
.cabinet-learning .workspace-spinner { width: 18px; height: 18px; flex: 0 0 18px; border: 2px solid var(--ws-rule); border-top-color: var(--ws-accent); border-radius: 50%; animation: ws-turn 900ms linear infinite; }
.cabinet-learning #workspace-elapsed { font-variant-numeric: tabular-nums; margin-left: auto; }
.cabinet-learning .workspace-recovery, .cabinet-learning .workspace-solution { border-left: 2px solid var(--ws-accent); padding: 8px 16px; margin-block: 24px; }
.cabinet-learning .workspace-composer { display: flex; gap: 12px; align-items: flex-end; padding: 8px; border: 1px solid var(--ws-rule); border-radius: var(--ws-radius); background: var(--ws-paper); max-width: 800px; margin-inline: auto; }
.cabinet-learning .workspace-composer textarea { flex: 1; min-width: 0; resize: none; min-height: 44px; max-height: 160px; padding: 10px 8px; border: 0; background: transparent; color: var(--ws-ink); font: 16px/1.5 Onest, sans-serif; }
.cabinet-learning .workspace-composer button { flex-shrink: 0; }
.cabinet-learning .workspace-attachments { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; max-width: 800px; margin: 0 auto 8px; }
.cabinet-learning .workspace-attachments[hidden] { display: none; }
.cabinet-learning .workspace-attachments li { display: flex; align-items: center; gap: 8px; font-size: 13px; }
.cabinet-learning .workspace-attachments img, .cabinet-learning .workspace-message-photos img { object-fit: contain; background: var(--ws-paper); border: 1px solid var(--ws-rule); }
.cabinet-learning .workspace-message-photos { display: flex; gap: 16px; margin-top: 12px; flex-wrap: wrap; }
.cabinet-learning .workspace-message-photos a { display: flex; gap: 8px; align-items: center; color: var(--ws-ink); font-size: 13px; }
.cabinet-learning .workspace-message-photos a:focus-visible { outline: 2px solid var(--ws-accent); outline-offset: 3px; }
.cabinet-learning .workspace-composer button, .cabinet-learning .workspace-card-link { transition: background-color var(--ws-fast) var(--ws-ease), color var(--ws-fast) var(--ws-ease); }
.cabinet-learning .workspace-input-note { margin: 6px auto 0; max-width: 800px; font-size: 11px; color: var(--ws-muted); }
.cabinet-learning .workspace-assessment { font-size: 14px; line-height: 1.6; margin-block: 12px; }
.cabinet-learning .workspace-plan-status { border-left: 2px solid var(--ws-accent); padding: 8px 16px; font-weight: 600; }
.cabinet-learning .workspace-plan-items { list-style: none; margin: 24px 0; padding: 0; }
.cabinet-learning .workspace-plan-items li { padding: 16px 0; border-bottom: 1px solid var(--ws-rule); }
.cabinet-learning .workspace-plan-items time { font-size: 13px; color: var(--ws-muted); }
.cabinet-learning .workspace-plan-items h3 { margin: 8px 0; }
.cabinet-learning .workspace-plan .action-row { margin-block: 24px; }
.cabinet-learning .workspace-menu { position: relative; }
.cabinet-learning .workspace-menu summary { cursor: pointer; padding: 12px; min-height: 44px; white-space: nowrap; }
.cabinet-learning .workspace-menu-body { position: absolute; right: 0; z-index: 3; background: var(--ws-paper); border: 1px solid var(--ws-rule); padding: 16px; width: min(320px, calc(100vw - 32px)); max-height: 60vh; overflow-y: auto; }
.cabinet-learning .workspace-menu-body h2 { font-size: 15px; }
.cabinet-learning .workspace-menu-body .lesson-link { display: block; padding-block: 12px; overflow-wrap: anywhere; }
.cabinet-learning .workspace-menu-body button { width: 100%; text-align: left; }
@keyframes ws-turn { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .cabinet-learning .workspace-spinner { animation: none; } }
@media (max-width: 1100px) {
  .cabinet-learning .workspace-heading { display: grid; grid-template-columns: minmax(0, 1fr); gap: 8px; }
  .cabinet-learning .workspace-heading-actions { gap: 4px; flex-wrap: nowrap; justify-content: flex-start; }
}
@media (max-width: 700px) {
  .cabinet-learning .workspace-header { padding: 12px 16px; }
  .cabinet-learning #workspace-actions { flex-wrap: nowrap; gap: 4px; }
  .cabinet-learning .workspace-menu summary { padding-inline: 8px; }
  .cabinet-learning .workspace-heading h2 { font-size: 18px; }
  .cabinet-learning .workspace-reading { padding: 16px; }
  .cabinet-learning .tutor-room .composer-wrap { padding: 8px 12px; }
  .cabinet-learning .workspace-composer { gap: 4px; }
  .cabinet-learning .workspace-input-note { font-size: 10px; }
}

/* Cards are a margin to the conversation, not another row above it. */
.cabinet-learning .workspace-layout {
  --ws-rail-width: 270px;
  --ws-theory-width: 380px;
  --ws-card-active: var(--amber-pale, #fff1dc);
  --ws-success: #35634b;
  --ws-assisted: #815e2e;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-areas: 'conversation';
  flex: 1;
  min-width: 0;
  min-height: 0;
  height: 100%;
  overflow: hidden;
}
.cabinet-learning .workspace-layout:has(#lesson-room[hidden]) { display: none; }
.cabinet-learning .workspace-layout > .lesson-room { grid-area: conversation; min-width: 0; overflow: hidden; }
.cabinet-learning .workspace-layout.workspace-nav-open {
  grid-template-columns: var(--ws-rail-width) minmax(0, 1fr);
  grid-template-areas: 'cards conversation';
}
.cabinet-learning .workspace-layout.workspace-theory-open {
  grid-template-columns: minmax(0, 1fr) var(--ws-theory-width);
  grid-template-areas: 'conversation reference';
}
.cabinet-learning .workspace-heading-title { display: flex; flex: 1 1 340px; align-items: center; gap: 16px; min-width: 0; }
.cabinet-learning .workspace-heading-title h2 { min-width: 0; overflow-wrap: anywhere; margin-top: 0; display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 2; overflow: hidden; }
.cabinet-learning #workspace-actions { flex-wrap: nowrap; }
.cabinet-learning #workspace-nav-toggle { font-size: 13px; padding-inline: 12px; flex-shrink: 0; }
.cabinet-learning .workspace-side-panel {
  position: static;
  inset: auto;
  margin: 0;
  padding: 0;
  width: auto;
  max-width: none;
  min-width: 0;
  height: 100%;
  max-height: none;
  border: 0;
  border-radius: 0;
  color: var(--ws-ink);
  background: var(--ws-paper);
  overflow: hidden;
}
.cabinet-learning .workspace-side-panel[open] { display: flex; flex-direction: column; }
.cabinet-learning .workspace-nav-panel { grid-area: cards; background: var(--cream); border-right: 1px solid var(--ws-rule); }
.cabinet-learning .workspace-theory-panel { grid-area: reference; border-left: 1px solid var(--ws-rule); }
.cabinet-learning .workspace-panel-header {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 16px; border-bottom: 1px solid var(--ws-rule); flex-shrink: 0;
}
.cabinet-learning .workspace-panel-header h2 { margin: 0; font: 600 16px/1.4 var(--sans); }
.cabinet-learning .workspace-panel-header .button { padding-inline: 12px; font-size: 12px; }
.cabinet-learning .workspace-panel-eyebrow { margin: 0 0 4px; color: var(--ws-muted); font: 12px/1.5 var(--sans); }
.cabinet-learning .workspace-panel-scroll { min-height: 0; flex: 1; overflow: auto; overscroll-behavior: contain; padding: 16px; scrollbar-gutter: stable; }
.cabinet-learning .workspace-nav-card {
  display: grid; gap: 8px; padding: 16px 12px; margin: 0 0 8px;
  border-radius: var(--radius-control); text-decoration: none; overflow-wrap: anywhere;
  color: var(--ws-ink); transition: background-color var(--ws-fast) var(--ws-ease);
}
.cabinet-learning .workspace-nav-card:hover { background: var(--ws-hover); }
.cabinet-learning .workspace-nav-card[aria-current='page'] { background: var(--ws-card-active); box-shadow: inset 3px 0 var(--ws-accent); }
.cabinet-learning .workspace-nav-card-title { font: 600 14px/1.5 var(--sans); }
.cabinet-learning .workspace-nav-card-preview { font: 13px/1.6 var(--sans); color: var(--ws-muted); }
.cabinet-learning .workspace-nav-counts, .cabinet-learning .workspace-nav-card time { font: 12px/1.5 var(--sans); color: var(--ws-muted); font-variant-numeric: tabular-nums; }
.cabinet-learning .workspace-card-status { font: 500 12px/1.5 var(--sans); color: var(--ws-muted); }
.cabinet-learning .workspace-card-status::before { content: ''; display: inline-block; width: 6px; height: 6px; margin: 0 6px 1px 0; border-radius: 50%; background: currentColor; }
.cabinet-learning .workspace-card-status-active { color: var(--ws-accent); }
.cabinet-learning .workspace-card-status-success { color: var(--ws-success); }
.cabinet-learning .workspace-card-status-assisted { color: var(--ws-assisted); }
.cabinet-learning .workspace-nav-group { margin-top: 24px; padding-top: 16px; border-top: 1px solid var(--ws-rule); }
.cabinet-learning .workspace-nav-group h3, .cabinet-learning .workspace-nav-group summary { margin: 0; font: 500 13px/1.6 var(--sans); color: var(--ws-muted); }
.cabinet-learning .workspace-nav-group summary { padding: 8px 0; min-height: 44px; }
.cabinet-learning .workspace-nav-empty { font: 14px/1.6 var(--sans); color: var(--ws-muted); margin: 8px 12px; }
.cabinet-learning .workspace-nav-parent { display: block; font-size: 13px; color: var(--ws-accent); min-height: 44px; padding: 8px 12px; text-underline-offset: 3px; }
.cabinet-learning .workspace-theory-catalog { border-bottom: 1px solid var(--ws-rule); margin-bottom: 24px; padding-bottom: 8px; }
.cabinet-learning .workspace-theory-catalog summary { font-size: 14px; font-weight: 500; padding: 8px 0; }
.cabinet-learning .workspace-theory-topic { display: block; background: transparent; border: 0; text-align: left; color: var(--ws-ink); padding: 12px 8px; min-height: 44px; width: 100%; font: 14px/1.5 var(--sans); }
.cabinet-learning .workspace-theory-topic:hover { background: var(--ws-hover); }
.cabinet-learning .workspace-panel-status { font: 13px/1.6 var(--sans); color: var(--ws-muted); }
.cabinet-learning .workspace-panel-status:empty { display: none; }
.cabinet-learning .workspace-theory-topic-title { font: 600 18px/1.5 var(--sans); }
.cabinet-learning .workspace-theory-index { display: grid; margin-block: 16px 32px; }
.cabinet-learning .workspace-theory-index button { background: transparent; color: var(--ws-accent); border: 0; border-radius: 0; min-height: 44px; padding: 8px 0; text-align: left; font: 13px/1.6 var(--sans); }
.cabinet-learning .workspace-theory-section { padding-block: 24px; border-top: 1px solid var(--ws-rule); }
.cabinet-learning .workspace-theory-section h4 { margin: 0 0 16px; font: 600 16px/1.5 var(--sans); }
.cabinet-learning .workspace-theory-body { font: 17px/1.8 Georgia, serif; overflow-wrap: anywhere; }
.cabinet-learning .workspace-theory-body p { margin-bottom: 16px; }
.cabinet-learning .workspace-theory-body p:last-child { margin-bottom: 0; }
.cabinet-learning .workspace-theory-body .katex-display { overflow-x: auto; overflow-y: hidden; padding-block: 8px; }
.cabinet-learning .workspace-theory-section > .button { margin: 16px 8px 0 0; font-size: 12px; }
.cabinet-learning .workspace-theory-save-note { border-left: 2px solid var(--ws-accent); padding: 8px 16px; margin-block: 24px; font-size: 14px; }
.cabinet-learning .workspace-personal-explanation { border-left: 2px solid var(--ws-rule); margin-top: 24px; padding-left: 16px; }
.cabinet-learning .workspace-personal-explanation .button { margin-top: 12px; font-size: 12px; }
.cabinet-learning .workspace-message-save { min-height: 44px; margin-top: 8px; padding: 8px 0; border: 0; color: var(--ws-accent); font: 12px/1.5 var(--sans); text-underline-offset: 3px; }
.cabinet-learning .workspace-message-save:hover:not(:disabled) { background: transparent; text-decoration: underline; }
.cabinet-learning .workspace-question-reference { display: flex; align-items: center; justify-content: space-between; gap: 12px; max-width: 800px; margin: 0 auto 8px; padding-left: 12px; border-left: 2px solid var(--ws-accent); font: 12px/1.5 var(--sans); }
.cabinet-learning .workspace-question-reference .button { min-height: 44px; font-size: 12px; padding: 8px; border: 0; flex-shrink: 0; }
.cabinet-learning .workspace-nav-card:focus-visible, .cabinet-learning .workspace-side-panel button:focus-visible { outline: 2px solid var(--ws-accent); outline-offset: 2px; }
@media (max-width: 1180px) {
  .cabinet-learning .workspace-layout.workspace-nav-open, .cabinet-learning .workspace-layout.workspace-theory-open { grid-template-columns: minmax(0, 1fr); grid-template-areas: 'conversation'; }
  .cabinet-learning .workspace-side-panel {
    position: fixed; inset: 8px; width: auto; max-width: none; height: calc(100dvh - 16px);
    max-height: calc(100dvh - 16px); margin: 0; border: 1px solid var(--ws-rule);
    border-radius: var(--ws-radius); z-index: 40;
  }
  .cabinet-learning .workspace-side-panel::backdrop { background: rgb(24 33 47 / 38%); }
  .cabinet-learning .workspace-panel-header { padding-top: max(16px, env(safe-area-inset-top)); }
  .cabinet-learning .workspace-panel-scroll { padding-bottom: max(24px, env(safe-area-inset-bottom)); }
  .cabinet-learning .workspace-nav-card { padding: 16px; }
}
@media (max-width: 700px) {
  .cabinet-learning .workspace-heading-title { align-items: flex-start; gap: 8px; }
  .cabinet-learning #workspace-nav-toggle { max-width: 112px; white-space: normal; font-size: 12px; padding: 8px; }
  .cabinet-learning .workspace-layout { min-height: 0; }
}
@media (prefers-reduced-motion: reduce) {
  .cabinet-learning .workspace-nav-card { transition: none; }
}