/* Shared, manually controlled teaching animations. */
.animation-card {
  margin-block: 22px;
  padding: 23px;
  overflow: hidden;
  border: 1px solid #bdd9d5;
  border-radius: 20px;
  background: #fbfefa;
  box-shadow: 0 3px 0 #e3ece5;
}
.animation-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: start; gap: 10px 18px; margin-bottom: 16px; }
.animation-head h3, .animation-head h4 { margin: 0; color: #164f48; font-size: 22px; }
.animation-head p { margin-top: 5px; color: var(--muted, #5e7168); font-size: 14px; }
.animation-head .pill { background: #e4f0f7; color: #225970; }
.animation-stage {
  position: relative;
  isolation: isolate;
  width: 100%;
  height: 250px;
  overflow: hidden;
  border: 1px solid #c2dce2;
  border-radius: 16px;
  color: #234a54;
  background: linear-gradient(180deg, #e7f5fb 0%, #f0f9fc 75%, #e4efdf 75%, #e4efdf 100%);
  font-size: 17px;
  line-height: 1.4;
}
.animation-stage > svg { max-height: 100%; }
.animation-stage[data-scene="pen"] { width: min(100%, 280px); height: auto; aspect-ratio: 1; margin-inline: auto; }
.animation-controls { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 16px; }
.animation-controls button, #conceptContent .animation-controls button {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  min-height: 46px; min-width: 46px; padding: 9px 15px;
  border: 1px solid #adcac0; border-radius: 11px;
  color: #0a5148; background: #fffefa; font: inherit; font-size: 16px; font-weight: 700; line-height: 1.5;
}
.animation-controls button:hover, #conceptContent .animation-controls button:hover { border-color: #126c60; background: #eaf4ed; }
.animation-controls button.primary, #conceptContent .animation-controls button.primary { border-color: #126c60; color: white; background: #126c60; }
.animation-controls button.primary:hover, #conceptContent .animation-controls button.primary:hover { background: #0a5148; }
.animation-controls button:disabled { cursor: default; opacity: .48; }
.animation-controls button:focus-visible { outline: 3px solid #236eaf; outline-offset: 3px; }
.animation-progress { flex: 1 1 120px; margin-left: auto; color: #536d68; font-size: 14px; text-align: right; font-variant-numeric: tabular-nums; }
progress.animation-progress { height: 9px; min-width: 90px; max-width: 170px; border: 0; border-radius: 8px; overflow: hidden; appearance: none; background: #d7e7e1; }
progress.animation-progress::-webkit-progress-bar { background: #d7e7e1; }
progress.animation-progress::-webkit-progress-value { border-radius: 8px; background: #178676; }
progress.animation-progress::-moz-progress-bar { border-radius: 8px; background: #178676; }
.animation-caption { min-height: 64px; margin-top: 15px; padding: 12px 16px; border: 1px solid #cee0d4; border-radius: 12px; color: #234c3e; background: #eef6ec; font-size: 18px; font-weight: 650; line-height: 1.7; }
.animation-caption:empty { min-height: 0; padding: 0; border: 0; }
.animation-code { margin-top: 18px; padding: 14px 16px; overflow-x: auto; border: 1px solid #e0e7db; border-radius: 12px; background: #fffefa; }
.animation-code .script-stack, .animation-code .blocks { margin-block: 0; }
.animation-step-list { display: grid; gap: 7px; margin: 16px 0 0; padding-left: 1.8em; color: #5e7168; font-size: 15px; }
.animation-step-list li { padding: 6px 9px; border: 1px solid transparent; border-radius: 8px; }
.animation-step-list li.is-active, .animation-step-list li[aria-current="step"] { border-color: #bbd8c6; color: #0a5148; background: #e9f4e7; font-weight: 700; }
.animation-step-list li::marker { font-variant-numeric: tabular-nums; }
.scene-track { position: absolute; left: 7%; right: 7%; bottom: 18%; display: flex; align-items: center; justify-content: space-around; gap: 10px; min-height: 14px; border-bottom: 3px solid #b1cdb5; }
.scene-track > .scene-token, .scene-track > .scene-item { transform: translateY(50%); }
.scene-cat {
  position: absolute; z-index: 4; left: 0; top: 0;
  display: grid; width: 58px; height: 62px; place-items: center;
  color: #775027; font-size: 43px; line-height: 1;
  filter: drop-shadow(0 4px 0 #263d3120);
  transform-origin: center;
  transition: transform .6s ease-in-out, opacity .35s, background-color .35s;
  will-change: transform;
}
.scene-cat svg { display: block; width: 58px; height: 62px; overflow: visible; }
.scene-target { position: absolute; z-index: 2; display: grid; width: 52px; min-height: 54px; place-items: center; font-size: 35px; text-align: center; transition: transform .6s ease-in-out, opacity .35s; }
.scene-grid { position: absolute; inset: 0; z-index: -1; background-image: linear-gradient(#c2dce266 1px, transparent 1px), linear-gradient(90deg, #c2dce266 1px, transparent 1px); background-size: 10% 25%; }
.scene-token, .scene-item { display: inline-grid; flex: 0 0 auto; min-width: 42px; min-height: 42px; place-items: center; padding: 5px 11px; border: 2px solid #bfd7c8; border-radius: 13px; color: #335b47; background: #fffefa; font-size: 21px; font-weight: 750; text-align: center; transition: transform .6s ease-in-out, opacity .35s, background-color .35s, border-color .35s; }
.scene-item { border-color: #c2d7df; color: #255466; background: #f3fbff; }
.scene-box { display: inline-grid; align-content: center; justify-items: center; gap: 5px; min-width: 85px; min-height: 82px; padding: 10px 15px; border: 2px solid #ddba72; border-radius: 14px; color: #775219; background: #fff0c9; text-align: center; transition: transform .6s ease-in-out, opacity .35s, background-color .35s; }
.scene-box strong { color: #513b19; font-size: 27px; font-variant-numeric: tabular-nums; }
.scene-box small, .scene-box label { font-size: 13px; }
.scene-badge { position: absolute; z-index: 6; display: inline-flex; justify-content: center; align-items: center; gap: 5px; max-width: calc(100% - 24px); min-height: 31px; padding: 5px 11px; border: 1px solid #c7dad7; border-radius: 10px; color: #28514a; background: #fffefaf5; font-size: 14px; font-weight: 700; text-align: center; transition: transform .6s ease-in-out, opacity .35s, background-color .35s; }
.scene-badge.is-active { border-color: #c7972e; color: #72511a; background: #fff0b4; }
.scene-machine { position: absolute; display: grid; gap: 6px; place-content: center; justify-items: center; min-width: 100px; min-height: 100px; padding: 13px; border: 3px solid #6585bd; border-radius: 18px; color: #304d79; background: #e6edff; text-align: center; transition: transform .6s ease-in-out, opacity .35s, background-color .35s; }
.scene-machine > strong { font-size: 20px; }
.scene-machine small { font-size: 13px; }
.scene-gate { position: absolute; z-index: 2; display: grid; place-content: center; justify-items: center; min-width: 66px; min-height: 72px; padding: 10px; border: 3px solid #cb9e54; border-radius: 16px 16px 4px 4px; color: #795822; background: #fff0ce; text-align: center; transition: transform .6s ease-in-out, opacity .35s, background-color .35s; }
.scene-path { position: absolute; border: 2px dashed #9bbcac; border-radius: 12px; pointer-events: none; }
svg.scene-path { inset: 0; width: 100%; height: 100%; border: 0; }
.scene-pen { position: absolute; inset: 0; width: 100%; height: 100%; }
.scene-pen line, .scene-pen polyline, .scene-pen path { fill: none; stroke: #178676; stroke-width: 4; stroke-linecap: round; stroke-linejoin: round; vector-effect: non-scaling-stroke; }
.scene-pen .is-dim { stroke: #a6c3b9; stroke-dasharray: 5 7; }
.animation-stage .is-dim { opacity: .3; }
.animation-stage .is-hidden { opacity: 0; pointer-events: none; }
.animation-stage .is-chosen, .animation-stage .scene-token.is-active, .animation-stage .scene-item.is-active { border-color: #127464; color: #0a5148; background: #d9f1db; box-shadow: 0 0 0 3px #fffefa; }
.animation-stage .scene-box.is-active { border-color: #b98a28; background: #ffe6a0; box-shadow: 0 0 0 3px #fffefa; }
.animation-card[data-playing="true"] .scene-badge.is-active { animation: animation-badge-glow 1.2s ease-in-out infinite; }
.animation-card[data-playing="true"] .scene-machine.is-active, .animation-card[data-playing="true"] .scene-gate.is-active { animation: animation-local-pulse .8s ease-in-out infinite; }
@keyframes animation-badge-glow { 50% { box-shadow: 0 0 0 4px #f9d47c66; } }
@keyframes animation-local-pulse { 50% { box-shadow: 0 0 0 5px #a4c6df55; } }
.animation-player { min-width:0; }
.animation-note,.animation-speed { margin-top:10px; color:#526b63; font-size:13px; }
.animation-speed select { margin-left:7px; padding:5px 9px; border:1px solid #bdd2c8; border-radius:8px; background:#fffefa; color:#234c3e; font:inherit; }
.scene-status { left:50%; bottom:8px; transform:translateX(-50%); white-space:normal; width:max-content; }
.scene-clock { top:10px; right:10px; }
.scene-counters { position:absolute; top:10px; left:10px; display:flex; gap:7px; }
.scene-counters .scene-box { min-height:58px; min-width:65px; padding:5px 10px; }
.scene-counters .scene-box strong { font-size:21px; }
.scene-rounds { position:absolute; top:82px; left:10px; display:flex; gap:5px; }
.scene-rounds .scene-item { min-height:30px; min-width:40px; padding:2px 6px; font-size:13px; }
.scene-direction { position:absolute; right:-18px; top:12px; color:#126c60; font-size:33px; line-height:1; transition:transform .6s; }
.scene-speech { position:absolute; top:19%; left:50%; transform:translateX(-50%); min-width:65px; padding:6px 12px; border:2px solid #a7c5b5; border-radius:14px; background:white; color:#305347; font-size:20px; font-weight:700; transition:opacity .3s; }
.scene-speech:after { content:""; position:absolute; left:20px; bottom:-9px; width:12px; height:12px; border-right:2px solid #a7c5b5; border-bottom:2px solid #a7c5b5; background:white; transform:skewY(30deg); }
.scene-pen line { stroke-dasharray:1; stroke-dashoffset:1; transition:stroke-dashoffset .7s ease-in-out,opacity .2s; }
.scene-value-boxes { position:absolute; inset:35px 12px 50px; display:flex; justify-content:center; align-items:center; gap:14px; }
.scene-value-boxes .scene-box { min-width:145px; min-height:120px; }
.scene-value-boxes .scene-box strong { font-size:38px; }
.scene-costumes { position:absolute; inset:0; }
.scene-costumes [data-costume] { position:absolute; transition:background-color .5s,transform .5s; }
.scene-costumes [data-costume="1"] { left:45%; top:6%; }
.scene-costumes [data-costume="2"] { right:8%; top:43%; }
.scene-costumes [data-costume="3"] { left:45%; top:71%; }
.scene-costumes [data-costume="4"] { left:8%; top:43%; }
.scene-costume-cat { left:calc(50% - 29px); top:calc(50% - 31px); }
.scene-yes { top:48%; left:12%; max-width:35%; }
.scene-no { top:48%; right:12%; max-width:35%; }
.scene-gate div { font-size:15px; overflow-wrap:anywhere; }
.scene-condition { left:50%; top:10px; transform:translateX(-50%); }
.scene-branch-token { position:absolute; left:0; top:0; color:#e18926; font-size:23px; line-height:1; transition:transform .6s; }
.scene-input { position:absolute; left:3%; top:33%; max-width:29%; min-width:65px; }
.scene-output { position:absolute; right:3%; top:33%; max-width:29%; min-width:65px; }
.scene-input strong,.scene-output strong { max-width:100%; overflow-wrap:anywhere; font-size:23px; }
.scene-machine { left:34%; top:27%; width:32%; min-width:0; max-width:32%; min-height:104px; }
.scene-machine strong { font-size:17px; }
.scene-machine small { overflow-wrap:anywhere; font-size:13px; }
.scene-machine-route { position:absolute; bottom:51px; width:100%; text-align:center; font-size:12px; color:#4c6b65; }
.scene-moving-card { position:absolute; left:0; top:0; min-width:30px; min-height:30px; padding:3px 6px; border-radius:8px; border:1px solid #cb8d29; background:#ffdc8c; font-size:18px; font-weight:700; text-align:center; transition:transform .6s; }
.scene-candidates { position:absolute; top:9px; left:0; width:100%; display:flex; justify-content:center; gap:8px; }
.scene-candidates .scene-item { min-height:30px; min-width:32px; padding:2px 8px; font-size:17px; }
.scene-results { position:absolute; left:10px; right:10px; bottom:46px; display:flex; justify-content:center; gap:7px; pointer-events:none; }
.scene-results:not(:empty) + .scene-machine-route { display:none; }
.scene-results .scene-item { min-height:28px; min-width:30px; padding:1px 6px; font-size:15px; }
.scene-clone-card { position:absolute; left:0; top:0; width:52px; height:80px; text-align:center; transition:transform .6s,opacity .35s; }
.scene-clone-card svg { width:50px; height:54px; }
.scene-clone-card small { display:block; font-size:11px; line-height:1.25; }
.scene-original { left:calc(20% - 26px); top:calc(65% - 40px); }
.scene-copy { --coat:#b5d5ec; }
.scene-list-items { position:absolute; inset:0; }
.scene-list-items .scene-item { position:absolute; left:0; top:0; width:65px; height:65px; background:#fff5d8; border-color:#d3ae60; }
.scene-list-items .scene-item:before { content:var(--item-number); position:absolute; top:-29px; left:0; width:100%; font-size:16px; color:#597266; }
.scene-list-items .scene-item.is-active { background:#ffe2a2; }
.is-current-block>.sb-outline path { stroke:#5d4607; stroke-width:3; filter:drop-shadow(0 0 2px #f6c443); }
.animation-card .animation-head h3 { font-size:19px; }
.example-grid>.animation-card { margin:0; padding:15px; }
.example-grid>.animation-code { margin:0; padding:8px; }
.animation-player[data-playing="true"] .scene-machine.is-active { animation:animation-local-pulse .8s ease-in-out infinite; }
@media(max-width:520px) { .scene-machine { min-height:90px; padding:7px; } .scene-machine strong { font-size:14px; } .scene-machine small { font-size:12px; } .scene-input,.scene-output { padding:6px; min-width:55px; min-height:74px; } .scene-input strong,.scene-output strong { font-size:20px; } .scene-counters .scene-box { min-width:56px; min-height:48px; padding:4px 6px; } .scene-rounds { top:68px; } .scene-rounds .scene-item { font-size:11px; min-width:35px; } .scene-value-boxes .scene-box { min-height:100px; } .scene-status { font-size:12px; } .scene-list-items .scene-item { width:55px; height:59px; } }

.concept-layout { width: min(1100px, 100%); margin-inline: auto; padding: 36px 28px 24px; }
.concept-intro { max-width: 740px; }
.concept-intro h1 { margin-top: 8px; font-size: clamp(27px, 4vw, 38px); letter-spacing: -.025em; }
.concept-intro > p:last-child { margin-top: 12px; color: var(--muted, #5e7168); font-size: 17px; }
.concept-links { display: flex; flex-wrap: wrap; gap: 10px; margin-block: 22px; }
.concept-links > a, .concept-links > button, .concept-card { display: flex; align-items: center; gap: 11px; min-height: 52px; padding: 11px 18px; border: 1px solid #c5d8c9; border-radius: 13px; color: #285447; background: #fffefa; font: inherit; font-size: 17px; font-weight: 700; line-height: 1.5; text-decoration: none; text-align: left; }
.concept-links > a:hover, .concept-links > button:hover, a.concept-card:hover { border-color: #126c60; background: #eef6eb; }
.concept-links > [aria-pressed="true"], .concept-links > [aria-selected="true"], .concept-links > [aria-current] { border-color: #126c60; color: white; background: #126c60; }
.concept-links small, .concept-card small { display: block; margin-top: 3px; font-size: 12px; font-weight: 400; }
.concept-card { align-items: start; padding: 17px; }
.concept-card > span:first-child:not(:only-child) { font-size: 23px; }
.concept-card p { margin-top: 5px; color: var(--muted, #5e7168); font-size: 14px; font-weight: 400; }
.concept-subnav { display:flex; gap:8px; flex-wrap:wrap; }
.concept-subnav [aria-current] { border-color:#126c60; background:#e2f1e4; }
.concept-heading { display: flex; justify-content: space-between; align-items: start; gap: 18px; padding-top: 11px; margin-bottom: 20px; }
.concept-heading h2 { font-size: clamp(25px, 3vw, 31px); }
.concept-heading p { max-width: 740px; margin-top: 7px; color: var(--muted, #5e7168); font-size: 17px; }
.concept-sections { display: grid; gap: 20px; }
.concept-teach { padding: 25px; border: 1px solid var(--line, #d9e3d8); border-radius: 18px; background: var(--white, #fffefa); box-shadow: 0 3px 0 #eaece2; }
.concept-teach h3 { color: #203a32; font-size: 22px; }
.concept-teach h4 { margin-top: 18px; font-size: 18px; }
.concept-teach > p, .concept-teach > ul, .concept-teach > ol { margin-top: 13px; }
.concept-teach ul, .concept-teach ol { padding-left: 1.5em; }
.concept-teach li + li { margin-top: 7px; }
.concept-teach .animation-card:last-child { margin-bottom: 0; }
.concept-teach .animation-card:first-child { margin-top: 0; }
.concept-teach .method-box { margin-top: 17px; }
.concept-teach .actions { margin-top: 19px; }
.concept-layout .parent-details { margin-top: 28px; }
.concept-layout .page-footer { padding-top: 10px; }
@media (max-width: 820px) {
  .animation-card { padding: 19px; }
  .concept-layout { padding: 29px 23px 23px; }
  .concept-intro h1 { font-size: 31px; }
}
@media (max-width: 520px) {
  .animation-card { margin-block: 18px; padding: 15px; border-radius: 15px; }
  .animation-head { margin-bottom: 12px; }
  .animation-head h3, .animation-head h4 { font-size: 20px; }
  .animation-head p { font-size: 13px; }
  .animation-stage { height: 220px; border-radius: 12px; font-size: 15px; }
  .animation-controls { gap: 7px; margin-top: 13px; }
  .animation-controls button, #conceptContent .animation-controls button { min-height: 46px; padding: 9px 11px; font-size: 14px; }
  .animation-progress { flex-basis: 100%; margin-top: 2px; text-align: left; font-size: 12px; }
  .animation-caption { min-height: 68px; padding: 11px 12px; font-size: 16px; }
  .animation-code { padding: 10px; }
  .animation-step-list { padding-left: 1.5em; font-size: 14px; }
  .scene-cat { width: 48px; height: 52px; font-size: 35px; }
  .scene-cat svg { width: 48px; height: 52px; }
  .scene-target { width: 42px; min-height: 45px; font-size: 28px; }
  .scene-box { min-width: 65px; min-height: 69px; padding: 8px 10px; }
  .scene-box strong { font-size: 22px; }
  .scene-token, .scene-item { min-width: 32px; min-height: 35px; padding: 4px 7px; border-radius: 10px; font-size: 17px; }
  .scene-badge { min-height: 28px; padding: 4px 7px; font-size: 12px; }
  .scene-machine { min-width: 77px; min-height: 87px; padding: 9px; border-width: 2px; border-radius: 14px; }
  .scene-machine > strong { font-size: 17px; }
  .scene-machine small { font-size: 11px; }
  .scene-machine-route { bottom: 39px; }
  .scene-gate { min-width: 54px; min-height: 60px; padding: 7px; border-width: 2px; }
  .concept-layout { padding: 25px 15px 20px; }
  .concept-intro h1 { font-size: 28px; }
  .concept-intro > p:last-child { font-size: 15px; }
  .concept-links { gap: 7px; margin-block: 19px; }
  .concept-links > a, .concept-links > button { flex: 1 1 auto; justify-content: center; min-height: 50px; padding: 10px; font-size: 16px; }
  .concept-links small { display: none; }
  .concept-heading { gap: 10px; margin-bottom: 16px; }
  .concept-heading h2 { font-size: 25px; }
  .concept-heading p { font-size: 15px; }
  .concept-teach { padding: 20px 17px; border-radius: 15px; }
  .concept-teach h3 { font-size: 20px; }
  .concept-teach > p { font-size: 16px; }
  .concept-sections { gap: 16px; }
}
@media (prefers-reduced-motion: reduce) {
  .animation-card *, .animation-card *::before, .animation-card *::after { transition: none !important; animation: none !important; }
}
@media print {
  .animation-controls, .concept-links, #conceptSpeak { display: none !important; }
  .concept-layout { padding: 0; }
  .animation-card, .concept-teach { box-shadow: none; break-inside: avoid; }
}