/* Independent tutorial selection, shared by the hub and companion. */
.tutorial-hub{display:flex;flex-direction:column;min-height:560px;gap:32px}.tutorial-detail{max-width:760px;padding:16px 0 24px}.tutorial-detail h2{font-size:32px;margin:16px 0}.tutorial-detail>p{line-height:1.8;color:var(--muted)}.tutorial-detail ol{padding-left:22px;line-height:1.9;margin:26px 0}.tutorial-detail li{padding:8px 0}.tutorial-detail .journey-art{width:130px;height:90px;display:block;margin-top:22px}.tutorial-back{font-size:13px;color:var(--muted);text-decoration:none}.tutorial-catalog{margin-top:auto;border-top:1px solid var(--line);padding:24px 0}.tutorial-catalog h3{font-size:14px;margin:0 0 15px}.tutorial-list{display:grid;grid-template-columns:minmax(0,1fr);gap:10px}.tutorial-list button{font:inherit;font-size:14px;text-align:left;padding:16px;border:1px solid var(--line);border-radius:16px;background:var(--bg);color:var(--ink);cursor:pointer}.tutorial-list button:hover{border-color:#8854ec}.tutorial-list button[aria-pressed=true]{background:rgb(136 84 236 / .12);color:var(--journey-purple-ink,#7532d6);border-color:#8854ec}.tutorial-survey{display:flex;gap:20px;justify-content:space-between;margin-top:22px;color:var(--ink);text-decoration:none;font-size:14px}.tutorial-survey span{color:var(--muted);font-size:13px}.journey-panel .tutorial-list{grid-template-columns:minmax(0,1fr);gap:6px;max-height:208px;overflow:auto}.journey-panel .tutorial-list button{font-size:12px;padding:10px;border-radius:10px}.journey-panel .panel-bottom h3{margin-bottom:10px}.journey-panel .panel-scroll ol{padding-left:20px;font-size:14px;line-height:1.8}.journey-panel .panel-scroll li{margin-bottom:12px}.journey-panel .panel-full-link{display:block}.tutorial-list button:focus-visible{outline:2px solid #8854ec;outline-offset:2px}

/* Desktop teaching hub: directory on the left, selected lesson on the right. */
.tutorial-hub{display:grid;grid-template-columns:260px minmax(0,1fr);align-items:start;gap:40px;min-height:0}
.tutorial-hub>.tutorial-catalog{grid-column:1;grid-row:1;margin:0;padding:0;border:0;position:sticky;top:20px}
.tutorial-hub>.tutorial-detail{grid-column:2;grid-row:1;min-width:0;padding:0}
.tutorial-hub .tutorial-survey{flex-direction:column;gap:5px;padding:12px 4px}
.tutorial-list button{display:flex;align-items:center;justify-content:space-between;gap:10px}
.tutorial-list button[data-learned=false]{background:rgb(136 84 236 / .13);border-color:rgb(136 84 236 / .3);color:var(--journey-purple-ink,#7532d6)}
.tutorial-list button[aria-pressed=true]{border-color:#8854ec;box-shadow:inset 3px 0 #8854ec}
.tutorial-learning-badge{font-size:11px;white-space:nowrap;flex:none}
.tutorial-list button[data-learned=true] .tutorial-learning-badge{color:var(--muted)}
.tutorial-learned-toggle{display:block;margin-top:24px;font:inherit;font-size:13px;border:1px solid var(--line);border-radius:12px;padding:10px 16px;background:var(--bg);color:var(--ink);cursor:pointer}

.shared-workbench #main .tutorial-list button[data-learned=false],.journey-panel .tutorial-list button[data-learned=false]{background:rgb(136 84 236 / .15);border-color:rgb(136 84 236 / .35);color:var(--journey-purple-ink,#7532d6)}
.shared-workbench #main .tutorial-list button[data-learned=false] .tutorial-learning-badge{color:var(--journey-purple-ink,#7532d6)}

/* Expand the directory until a lesson is chosen; its width animates without scaling text. */
.tutorial-hub{grid-template-columns:minmax(0,1fr);gap:0;isolation:isolate}
.tutorial-hub.has-lesson{grid-template-columns:260px minmax(0,1fr);gap:40px}
.tutorial-hub>.tutorial-catalog{min-width:0;z-index:2;background:var(--bg);border-radius:16px}
.tutorial-hub>.tutorial-detail{overflow:hidden;z-index:1}
.tutorial-hub:not(.has-lesson) .tutorial-survey{flex-direction:row}

/* Quiet lesson rows; only the selected lesson carries the strong accent. */
.shared-workbench #main .tutorial-list,.journey-panel .tutorial-list{gap:7px}
.shared-workbench #main .tutorial-list button,.journey-panel .tutorial-list button{min-height:54px;padding:14px 17px;border:1px solid transparent;border-radius:12px;box-shadow:none;letter-spacing:.1px;transition:background-color .18s ease,color .18s ease}
.shared-workbench #main .tutorial-list button[data-learned=false],.journey-panel .tutorial-list button[data-learned=false]{background:rgb(136 84 236 / .055);border-color:transparent;color:var(--ink)}
.shared-workbench #main .tutorial-list button:hover,.journey-panel .tutorial-list button:hover{background:rgb(136 84 236 / .11);border-color:transparent}
.tutorial-learning-badge svg{display:block;width:20px;height:20px;fill:rgb(136 84 236 / .13)}
.tutorial-learning-badge svg path{fill:#8854ec}
.shared-workbench #main .tutorial-list button[aria-pressed=true],.journey-panel .tutorial-list button[aria-pressed=true]{background:#7532d6;color:#fff;border-color:transparent;box-shadow:none;font-weight:600}
.shared-workbench #main .tutorial-list button[aria-pressed=true] .tutorial-learning-badge,.journey-panel .tutorial-list button[aria-pressed=true] .tutorial-learning-badge{color:#fff}
.tutorial-list button[aria-pressed=true] .tutorial-learning-badge svg{fill:rgb(255 255 255 / .18)}
.tutorial-list button[aria-pressed=true] .tutorial-learning-badge svg path{fill:#fff}
.journey-panel .tutorial-list button{min-height:42px;padding:10px 12px}
@media(prefers-reduced-motion:reduce){.shared-workbench #main .tutorial-list button,.journey-panel .tutorial-list button{transition:none}}

.teaching-nav-notice{position:fixed;z-index:10000;max-width:calc(100vw - 24px);width:max-content;padding:10px 14px;border:1px solid var(--line);border-radius:12px;background:var(--bg);color:var(--ink);box-shadow:0 6px 20px #0001;font-size:14px;text-align:center}.teaching-nav-notice[hidden]{display:none}
.teaching-nav-notice{transform-origin:top center}
.teaching-nav-notice.is-opening{animation:teaching-hint-open .28s cubic-bezier(.16,1,.3,1) both}
.teaching-nav-notice.is-closing{animation:teaching-hint-close .18s ease-in both}
@keyframes teaching-hint-open{from{opacity:0;transform:translateY(-6px) scale(.9)}to{opacity:1;transform:translateY(0) scale(1)}}
@keyframes teaching-hint-close{from{opacity:1;transform:translateY(0) scale(1)}to{opacity:0;transform:translateY(-4px) scale(.96)}}
@media(prefers-reduced-motion:reduce){.teaching-nav-notice.is-opening,.teaching-nav-notice.is-closing{animation:none}}