/* ============================================================
   AA — week 2 animation styles (anim-w2.js). Theme tokens only.
   ============================================================ */
.anim .w2-in {
  font-family: var(--font-mono); font-size: .76rem; color: var(--text);
  background: var(--surface-2); border: 1px solid var(--border-strong); border-radius: 8px;
  padding: .38rem .55rem; min-height: 32px; max-width: 100%; box-sizing: border-box;
}
.anim .w2-in:disabled { opacity: .75; }
.anim .w2-small { font-size: .85rem; margin: 0 0 .6rem; }
.anim .w2-guess button[aria-pressed="true"] { background: var(--accent-soft); color: var(--accent); border-color: var(--accent); }

/* wide programs: code on top, variables and output side by side below */
.w2-wide .ct { grid-template-columns: minmax(0, 1fr); }
.w2-wide .ct-code { max-height: none; }
.w2-wide .ct-side { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); grid-template-rows: auto 1fr; grid-auto-flow: column; column-gap: .8rem; row-gap: .35rem; }
@media (max-width: 640px) {
  .w2-wide .ct-side { display: flex; }
}

/* swap: arrows */
.anim svg.w2-swap-svg { width: 100%; max-width: 460px; height: auto; display: block; margin: 0 auto; }
.w2-swap-svg text { font-family: var(--font-mono); font-size: 20px; fill: var(--heading); }
.w2-swap-svg .w2-val-sub { font-size: 12px; fill: var(--muted); }
.w2-swap-svg .w2-tag rect { fill: var(--surface-2); stroke: var(--border-strong); stroke-width: 1.5; transition: stroke .2s; }
.w2-swap-svg .w2-tag.off { opacity: .18; }
.w2-swap-svg .w2-tag.moved rect { stroke: var(--accent); stroke-width: 2.5; }
.w2-swap-svg .w2-arrow { fill: none; stroke-width: 2.5; }
.w2-swap-svg .w2-arrow-L { stroke: var(--blue); }
.w2-swap-svg .w2-arrow-R { stroke: var(--green); }
.w2-swap-svg .w2-arrow.moved { stroke-width: 4; }
.w2-swap-svg .w2-mk-L { fill: var(--blue); }
.w2-swap-svg .w2-mk-R { fill: var(--green); }
.w2-swap-svg .w2-val rect { stroke-width: 2; transition: opacity .25s; }
.w2-swap-svg .w2-val-L rect { fill: var(--blue-soft); stroke: var(--blue); }
.w2-swap-svg .w2-val-R rect { fill: var(--green-soft); stroke: var(--green); }
.w2-swap-svg .w2-val.off { opacity: .25; }
.w2-swap-svg .w2-val.lost rect { stroke: var(--red); stroke-dasharray: 6 5; fill: var(--red-soft); }
.w2-swap-svg .w2-val.lost .w2-val-sub { fill: var(--red); }
.w2-swap-svg .w2-val.read rect { stroke-width: 4; }
.w2-swap-svg .w2-tuple { opacity: 0; transition: opacity .25s; }
.w2-swap-svg .w2-tuple.on { opacity: 1; }
.w2-swap-svg .w2-tuple rect { fill: var(--accent-soft); stroke: var(--accent); stroke-width: 1.5; stroke-dasharray: 5 4; }
.w2-swap-svg .w2-tuple text { font-size: 13px; fill: var(--accent); }

/* predict */
.w2-pred { display: flex; flex-direction: column; gap: .5rem; }
.w2-prow { display: grid; grid-template-columns: 1.6rem minmax(0, 1fr) 7.5rem auto; gap: .5rem; align-items: center;
  border: 1px solid var(--border); border-radius: 10px; padding: .45rem .6rem; background: var(--surface); transition: border-color .2s; }
.w2-prow.good { border-color: var(--green); }
.w2-prow.bad { border-color: var(--red); }
.w2-pno { font-family: var(--font-mono); font-size: .66rem; color: var(--muted); }
.w2-pcode { font-family: var(--font-mono); font-size: .8rem; background: none; border: 0; padding: 0; white-space: nowrap; overflow-x: auto; color: var(--text); }
.w2-prow .w2-in { width: 100%; }
.w2-pres { grid-column: 2 / -1; }
.w2-pres:empty { display: none; }
.w2-pout { font-family: var(--font-mono); font-size: .76rem; }
.w2-pout b { color: var(--accent); font-size: .95rem; margin: 0 .3rem; }
.w2-ok { color: var(--green); font-weight: 700; }
.w2-no { color: var(--red); }
.w2-why { font-size: .86rem; margin: .35rem 0 .1rem; }
.w2-vis { margin-top: .45rem; }
.w2-cap { font-family: var(--font-mono); font-size: .62rem; color: var(--muted); margin-top: .25rem; }
.w2-cap b { color: var(--accent); }
.w2-split4 { display: flex; gap: 3px; max-width: 320px; }
.w2-split4 span { height: 24px; display: grid; place-items: center; font-family: var(--font-mono); font-size: .66rem;
  background: var(--blue-soft); border: 1px solid var(--blue); border-radius: 4px; color: var(--blue); animation: w2-pop .3s ease both; }
.w2-groups { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; }
.w2-grp, .w2-rest { display: inline-flex; gap: 3px; padding: 4px; border-radius: 6px; border: 1px dashed var(--border-strong); }
.w2-grp.hi { border: 1px solid var(--blue); background: var(--blue-soft); }
.w2-rest.hi { border: 1px solid var(--accent); background: var(--accent-soft); }
.w2-vis i { display: inline-block; width: 11px; height: 11px; border-radius: 50%; background: var(--border-strong); animation: w2-pop .25s ease both; }
.w2-grp.hi i { background: var(--blue); }
.w2-rest.hi i { background: var(--accent); }
.w2-rows div { display: flex; gap: 3px; margin-bottom: 3px; }
.w2-rows i { background: var(--green); }
.w2-rep { display: inline-flex; font-family: var(--font-mono); font-size: 1rem; }
.w2-rep span { padding: .15rem .45rem; border: 1px solid var(--green); background: var(--green-soft); color: var(--green); animation: w2-pop .3s ease both; }
.w2-rep span:nth-child(2) { animation-delay: .15s; border-left: 0; }
.w2-rep span:nth-child(3) { animation-delay: .3s; border-left: 0; }
@keyframes w2-pop { from { opacity: 0; transform: scale(.6); } }

/* split the bill */
.w2-pot { border: 1px dashed var(--border-strong); border-radius: 10px; padding: .45rem .6rem; margin-bottom: .6rem; min-height: 3rem; }
.w2-people { display: grid; grid-template-columns: repeat(auto-fill, minmax(92px, 1fr)); gap: .5rem; }
.w2-person { border: 1px solid var(--border); border-radius: 10px; padding: .45rem .5rem; background: var(--surface); min-width: 0; }
.w2-ph { font-family: var(--font-mono); font-size: .64rem; color: var(--muted); margin-bottom: .3rem; }
.w2-cnt { font-family: var(--font-mono); font-size: .7rem; color: var(--muted); margin-bottom: .3rem; }
.w2-cnt b { color: var(--heading); font-size: .9rem; }
.w2-frac { color: var(--accent); font-weight: 700; margin-left: .3rem; }
.w2-toks { display: flex; flex-wrap: wrap; gap: 2px; }
.w2-toks i { width: 8px; height: 8px; border-radius: 50%; background: var(--border-strong); }
.w2-toks i.g { background: var(--green); }
.w2-toks i.lo { background: var(--accent); box-shadow: 0 0 0 2px var(--accent-soft); }

/* badge */
.w2-tiles { display: flex; flex-wrap: wrap; gap: .6rem .9rem; align-items: flex-end; }
.w2-group { display: inline-flex; flex-wrap: wrap; gap: 1.05rem 3px; position: relative; padding: 1rem 0 1rem; }
.w2-gl { position: absolute; top: 0; left: 0; font-family: var(--font-mono); font-size: .58rem; color: var(--muted); white-space: nowrap; }
.w2-tile { position: relative; min-width: 1.7rem; height: 2.1rem; padding: 0 .2rem; display: grid; place-items: center; font-family: var(--font-mono); font-size: .95rem;
  border: 1px solid var(--border-strong); border-radius: 6px; background: var(--bg-soft); color: var(--heading); transition: all .25s ease; box-sizing: border-box; }
.w2-tile.up { border-color: var(--blue); }
.w2-tile.sp { border-style: dashed; color: var(--muted); }
.w2-tile.ghost { color: var(--muted); border-style: dashed; }
.w2-tile.counted { background: var(--green-soft); border-color: var(--green); }
.w2-tile.sp.bad.counted { background: var(--red-soft); border-color: var(--red); color: var(--red); }
.w2-tile small { position: absolute; bottom: -1rem; left: 50%; transform: translateX(-50%); font-size: .52rem; background: var(--bg); color: var(--green); border-radius: 4px; padding: 0 2px; line-height: 1.3; }
.w2-tile.bad small { color: var(--red); }

/* find the bug */
.w2-kinds { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem; min-height: 3rem; }
.w2-kinds:empty { min-height: 0; }
.w2-kchip { display: inline-flex; flex-direction: column; align-items: center; padding: .3rem .7rem; border-radius: 8px; border: 1px solid var(--border-strong); background: var(--bg-soft); font-family: var(--font-mono); }
.w2-kchip b { font-size: .95rem; color: var(--heading); font-weight: 400; }
.w2-kchip small { font-size: .6rem; color: var(--muted); }
.w2-kinds.bad .w2-kchip:first-child { border-color: var(--red); background: var(--red-soft); }
.w2-kinds.bad .w2-kchip:first-child small { color: var(--red); }
.w2-kinds.ok .w2-kchip { border-color: var(--green); }
.w2-kop { font-family: var(--font-mono); font-size: 1.1rem; color: var(--muted); }
.w2-kres { font-family: var(--font-mono); font-size: .8rem; }
.w2-kinds.bad .w2-kres { color: var(--red); }
.w2-kinds.ok .w2-kres { color: var(--green); font-weight: 700; }
.w2-quiz { display: none; margin-top: .9rem; }
.w2-quiz.on { display: block; }
.w2-q p { font-size: .88rem; margin: .2rem 0 .45rem; }
.w2-q .anim-msg { min-height: 0; }
.w2-q2 { display: none; margin-top: .6rem; }
.w2-q2.on { display: block; }
.w2-quiz button.right { border-color: var(--green); color: var(--green); background: var(--green-soft); }
.w2-quiz button.wrong { border-color: var(--red); color: var(--red); background: var(--red-soft); }

@media (max-width: 560px) {
  .w2-prow { grid-template-columns: 1.2rem minmax(0, 1fr) auto; }
  .w2-prow .w2-in { grid-column: 2; }
  .w2-prow .w2-pcode { grid-column: 2 / -1; }
  .w2-prow > button { grid-column: 3; grid-row: 2; }
  .w2-pno { grid-row: 1 / 3; }
  .w2-pres { grid-column: 1 / -1; }
  .w2-people { grid-template-columns: repeat(auto-fill, minmax(76px, 1fr)); }
  .w2-tile { min-width: 1.45rem; height: 1.9rem; font-size: .85rem; }
}

/* option rows: let long segmented controls wrap instead of overflowing; tables may shrink */
.anim .w2-opts .seg { flex-wrap: wrap; max-width: 100%; }
.anim .w2-opts .seg button { white-space: nowrap; }
.anim .w2-opts > span { max-width: 100%; }
.anim-table.w2-tbl { min-width: 0; }