/* ---- Academy ---- */
.ac-hero { display: flex; flex-wrap: wrap; gap: 32px; align-items: center; justify-content: space-between; background: var(--teal-btn); color: #fff; border-radius: 28px; padding: 36px 44px; }
.ac-hero .bz-muted { color: #fff; }
.ac-hero__art { width: 220px; flex: none; }
.ac-layout { display: grid; grid-template-columns: 300px minmax(0, 1fr); gap: 28px; align-items: start; }
.ac-courses { display: flex; flex-direction: column; gap: 10px; }
.ac-course { text-align: left; display: flex; flex-direction: column; gap: 6px; padding: 16px; border-radius: 18px; background: var(--surface); border: 3px solid transparent; box-shadow: 0 2px 0 var(--line); }
.ac-course[aria-pressed="true"] { border-color: var(--teal); }
.ac-map { background: var(--surface); border-radius: 28px; padding: 28px; display: flex; flex-direction: column; gap: 8px; }
.ac-lessons { display: flex; flex-direction: column; gap: 14px; margin: 18px 0; }
.ac-lessons li { display: flex; align-items: center; gap: 16px; max-width: 420px; }
.ac-lessons li[data-side="right"] { align-self: flex-end; flex-direction: row-reverse; text-align: right; }
.ac-lesson__txt { display: flex; flex-direction: column; }
.ac-lesson__state { font-size: 14px; font-weight: 600; color: var(--muted); }
.ac-lessons li[data-state="Done"] .ac-lesson__state { color: var(--teal-ink); }
.ac-lessons li[data-state="Up next"] .ac-lesson__state { color: var(--accent-text); }
.ac-node { width: 72px; height: 72px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-family: var(--font-head); font-weight: 800; font-size: 28px; text-decoration: none; flex: none; background: var(--soft); color: var(--muted); border: 3px solid var(--line); box-shadow: 0 5px 0 var(--line); }
.ac-node .bz-icon { width: 30px; height: 30px; }
.ac-lessons li[data-state="Done"] .ac-node { background: var(--teal); color: #fff; border-color: #06605F; box-shadow: 0 5px 0 #06605F; }
.ac-lessons li[data-state="Up next"] .ac-node { background: #FFC93C; color: #1A1D3A; border-color: #B88A10; box-shadow: 0 5px 0 #B88A10; }
.ac-node:hover { color: inherit; filter: brightness(1.05); }
.ac-finish { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between; padding: 14px 18px; border-radius: 16px; background: var(--bg); }
@media (max-width: 860px) { .ac-layout { grid-template-columns: 1fr; } .ac-courses { flex-direction: row; overflow-x: auto; } .ac-course { flex: 0 0 240px; } .ac-hero { padding: 24px; } .ac-hero__art { display: none; } }

/* ---- Academy lesson ---- */
.ls { min-height: 100vh; height: 100vh; display: flex; flex-direction: column; background: var(--bg); }
.ls-top { display: flex; align-items: center; gap: 16px; padding: 10px 20px; background: var(--surface); border-bottom: 2px solid var(--line); }
.ls-back { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; text-decoration: none; white-space: nowrap; }
.ls-title { flex: 1; font-family: var(--font-head); font-size: 20px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ls-steps-btn { display: none; }
.ls-dots { display: flex; gap: 6px; }
.ls-dots span { width: 28px; height: 8px; border-radius: 999px; background: var(--line); }
.ls-dots span[data-s="done"] { background: var(--teal); }
.ls-dots span[data-s="now"] { background: #FFC93C; }
.ls-body { flex: 1; min-height: 0; display: grid; grid-template-columns: 360px minmax(0, 1fr); }
.ls-steps { padding: 24px; display: flex; flex-direction: column; gap: 14px; background: var(--surface); border-right: 2px solid var(--line); overflow: auto; position: relative; }
.ls-close { display: none; }
.ls-goal { display: flex; flex-direction: column; gap: 4px; padding: 12px 14px; border-radius: 14px; background: var(--level-soft); color: var(--level-ink); font-weight: 600; }
.ls-goal .bz-eyebrow { color: var(--level-ink); }
.ls-pass { display: flex; gap: 8px; align-items: center; padding: 12px 14px; border-radius: 14px; background: var(--teal-soft); color: var(--teal-ink); font-weight: 600; }
.ls-fail, .ls-hint { padding: 12px 14px; border-radius: 14px; background: var(--accent-soft); color: var(--accent-text); font-weight: 500; }
.ls-hint { background: var(--blue-soft); color: var(--blue-ink); }
.ls-work { display: grid; grid-template-rows: minmax(0, 1fr) minmax(0, 1fr); gap: 14px; padding: 16px; min-height: 0; }
.ls-blocks { background: var(--surface); border-radius: 20px; display: flex; flex-direction: column; min-height: 0; overflow: hidden; }
.ls-blocks__bar { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; padding: 10px 12px; border-bottom: 2px solid var(--soft); }
.ls-uses { margin-left: 8px; }
.ls-pal { padding: 6px 12px; border-radius: 10px; border: 2px solid var(--line); background: var(--bg); font-weight: 600; font-size: 14px; }
.ls-pal[data-k="when"] { border-color: #FFC93C; }
.ls-pal[data-k="change"] { border-color: #0A8F8F; }
.ls-pal[data-k="remove"] { border-color: #C93A0A; }
.ls-pal[aria-disabled="true"] { opacity: .5; }
.ls-work__area { flex: 1; overflow: auto; padding: 16px; background-image: radial-gradient(var(--line) 1px, transparent 1px); background-size: 20px 20px; }
.ls-stack { display: flex; flex-direction: column; gap: 6px; width: max-content; max-width: 100%; }
.ls-block { display: flex; align-items: center; gap: 10px; padding: 10px 14px; border-radius: 12px; font-weight: 600; background: #FFC93C; color: #1A1D3A; }
.ls-block--change { background: #0A8F8F; color: #fff; margin-left: 18px; }
.ls-block--remove { background: #C93A0A; color: #fff; margin-left: 18px; }
.ls-x { margin-left: auto; width: 26px; height: 26px; border-radius: 8px; border: 0; background: rgba(0,0,0,.2); color: inherit; display: inline-flex; align-items: center; justify-content: center; padding: 0; }
.ls-slot { margin-left: 18px; padding: 10px 14px; border-radius: 12px; border: 2px dashed var(--muted); color: var(--muted); font-weight: 500; }
.ls-code { margin: 0; padding: 14px; border-radius: 12px; background: #0F1124; color: #D7DAEA; font-family: ui-monospace, Consolas, monospace; font-size: 14px; line-height: 1.6; overflow: auto; }
.ls-game { position: relative; border-radius: 20px; overflow: hidden; background: #2D63E8; min-height: 0; }
.ls-game > svg { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.ls-score { position: absolute; left: 12px; top: 12px; padding: 6px 12px; border-radius: 999px; background: rgba(11,13,30,.78); color: #fff; font-weight: 600; font-size: 14px; }
.ls-game__btns { position: absolute; left: 12px; bottom: 12px; display: flex; gap: 8px; }
.ls-game__btns .bz-btn { background: rgba(255,255,255,.92); color: #1A1D3A; }
.ls-rotate { display: none; }
@media (max-width: 860px) and (min-width: 721px) { .ls-body { grid-template-columns: 300px minmax(0, 1fr); } }
@media (max-width: 720px), (pointer: coarse) and (max-height: 500px) {
  .ls { height: 100vh; position: relative; }
  .ls-top { padding: 6px 10px; gap: 10px; }
  .ls-back span, .ls-title, .ls-dots { display: none; }
  .ls-top { justify-content: space-between; }
  .ls-steps-btn { display: inline-flex; padding: 8px 14px; border-radius: 12px; border: 2px solid var(--line); background: var(--bg); font-weight: 700; }
  .ls-body { display: block; position: relative; flex: 1; }
  .ls-steps { position: absolute; z-index: 5; left: 0; top: 0; bottom: 0; width: min(380px, 90%); border-right: 2px solid var(--line); box-shadow: 0 0 40px var(--shadow); transform: translateX(-102%); transition: transform .2s ease; }
  .ls-steps { visibility: hidden; }
  .ls[data-drawer="true"] .ls-steps { transform: none; visibility: visible; }
  .ls-close { display: inline-flex; position: absolute; right: 10px; top: 10px; width: 36px; height: 36px; border-radius: 10px; border: 0; background: var(--soft); align-items: center; justify-content: center; }
  .ls-work { position: absolute; inset: 0; grid-template-rows: none; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); padding: 8px; gap: 8px; }
  .ls-uses { display: none; }
}
@media (orientation: portrait) and (max-width: 720px) {
  .ls-rotate { display: flex; position: absolute; inset: 0; z-index: 10; background: rgba(11,13,30,.96); color: #fff; flex-direction: column; align-items: center; justify-content: center; gap: 14px; font-weight: 600; font-size: 20px; text-align: center; padding: 24px; }
  .ls-rotate .bz-icon { width: 56px; height: 56px; }
}
@media (prefers-reduced-motion: reduce) { .ls-steps { transition: none; } }
@media (max-width: 720px), (pointer: coarse) and (max-height: 500px) { .ls-game__btns { flex-direction: column; align-items: flex-start; } .ls-game__btns .bz-btn { padding: 6px 10px; font-size: 13px; } }