/* WORLD Tools: shared authoring preview and student runtime. */
.sitw-world-tool {
  --wt-accent: #a855f7;
  --wt-panel: rgba(255, 255, 255, .035);
  --wt-line: rgba(255, 255, 255, .12);
  position: relative;
  margin: 24px 0;
  color: rgba(255, 255, 255, .9);
  font-family: Inter, system-ui, sans-serif;
}

.sitw-world-tool button {
  font: inherit;
}

.sitw-world-tool a {
  color: #d9b8ef;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.sitw-world-tool code,
.sitw-wt-equation {
  padding: 2px 6px;
  border: 1px solid rgba(199, 155, 255, .15);
  border-radius: 6px;
  background: rgba(155, 48, 255, .08);
  color: #ead8ff;
  font: 600 .88em ui-monospace, SFMono-Regular, Menlo, monospace;
}

.sitw-wt-equation {
  display: inline-block;
  padding: 7px 10px;
}

.sitw-wt-rich-media {
  display: block;
  overflow: hidden;
  margin: 13px 0;
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: 13px;
  background: rgba(0, 0, 0, .2);
}

.sitw-wt-rich-media img,
.sitw-wt-rich-media video,
.sitw-wt-rich-media iframe {
  display: block;
  width: 100%;
  max-height: 460px;
  border: 0;
  object-fit: contain;
}

.sitw-wt-rich-media iframe {
  aspect-ratio: 16 / 9;
}

.sitw-wt-learning-state {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-top: 9px;
  color: rgba(255, 255, 255, .42);
  font-size: 9px;
}

.sitw-wt-learning-state > span {
  flex: 1;
  overflow: hidden;
  height: 3px;
  border-radius: 99px;
  background: rgba(255, 255, 255, .08);
}

.sitw-wt-learning-state i {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #8d36da, #c99af0);
  transition: width .25s ease;
}

.sitw-wt-learning-state b {
  min-width: 72px;
  color: rgba(225, 195, 246, .68);
  font-size: 9px;
  text-align: right;
}

.sitw-world-tool.is-learning-locked {
  min-height: 110px;
}

.sitw-world-tool.is-learning-locked > :not(.sitw-wt-learning-lock) {
  opacity: .2;
  filter: blur(2px);
  pointer-events: none;
  user-select: none;
}

.sitw-wt-learning-lock {
  position: absolute;
  z-index: 12;
  inset: 0;
  display: grid;
  place-content: center;
  padding: 22px;
  border: 1px solid rgba(199, 155, 255, .18);
  border-radius: 18px;
  background: rgba(12, 10, 16, .9);
  text-align: center;
}

.sitw-wt-learning-lock b,
.sitw-wt-learning-lock span { display: block; }
.sitw-wt-learning-lock b { color: #fff; font-size: 14px; }
.sitw-wt-learning-lock span { margin-top: 5px; color: rgba(255, 255, 255, .48); font-size: 10px; }

.sitw-wt-learning-continue {
  display: block;
  margin: 10px 0 0 auto;
  border: 1px solid rgba(199, 155, 255, .25);
  border-radius: 9px;
  background: rgba(155, 48, 255, .1);
  color: #ead8ff;
  padding: 8px 11px;
  font-size: 10px;
  font-weight: 800;
  cursor: pointer;
}

.sitw-world-mastery-message {
  margin: 18px 0 0;
  padding: 12px 14px;
  border: 1px solid rgba(255, 190, 80, .2);
  border-radius: 11px;
  background: rgba(255, 190, 80, .055);
  color: rgba(255, 225, 177, .78);
  font-size: 11px;
}

/* Extended engines: diagrams, layouts, visual media and activities. */
.sitw-wt-diagram .sitw-wt-shell,
.sitw-wt-layout .sitw-wt-shell,
.sitw-wt-visual .sitw-wt-shell,
.sitw-wt-activity .sitw-wt-shell { padding: 22px; }
.sitw-wt-diagram-toolbar{display:flex;justify-content:flex-end;gap:5px;margin:13px 0 8px}.sitw-wt-diagram-toolbar button{height:34px;padding:0 10px;border:1px solid rgba(199,155,255,.2);border-radius:8px;background:rgba(155,48,255,.08);color:#e2c6f6;font:750 10px Inter,sans-serif;cursor:pointer}.sitw-wt-diagram-stage{overflow:hidden;aspect-ratio:16/9;border:1px solid rgba(255,255,255,.09);border-radius:14px;background:radial-gradient(circle at 50% 0,rgba(155,48,255,.08),transparent 70%),#0d0c11}.sitw-wt-diagram-stage svg{display:block;width:100%;height:100%}.sitw-wt-diagram-edge{fill:none;stroke:rgba(199,155,255,.5);stroke-width:2;vector-effect:non-scaling-stroke}.sitw-wt-diagram-node>*:first-child{fill:#19161f;stroke:rgba(255,255,255,.16);stroke-width:1.5;vector-effect:non-scaling-stroke}.sitw-wt-diagram-node.is-accent>*:first-child{fill:#281638;stroke:#c99af0}.sitw-wt-diagram-node.is-success>*:first-child{fill:#13261b;stroke:#53d987}.sitw-wt-diagram-node.is-warning>*:first-child{fill:#2b2212;stroke:#f5c44c}.sitw-wt-diagram-node.is-danger>*:first-child{fill:#2b1519;stroke:#ff7186}.sitw-wt-diagram-node text{fill:#fff;font:700 14px Inter,sans-serif;pointer-events:none}.sitw-wt-diagram-description{margin-top:10px}.sitw-wt-diagram-description summary{color:rgba(255,255,255,.5);font-size:10px;cursor:pointer}.sitw-wt-diagram-node-list,.sitw-wt-diagram-edge-list{color:rgba(255,255,255,.62);font-size:11px;line-height:1.65}.sitw-wt-diagram-node-list li{margin:8px 0}.sitw-wt-diagram-node-list b,.sitw-wt-diagram-node-list span{display:block}.sitw-wt-layout-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.sitw-wt-layout.is-single .sitw-wt-layout-grid{grid-template-columns:1fr}.sitw-wt-layout.is-wide-left .sitw-wt-layout-grid{grid-template-columns:2fr 1fr}.sitw-wt-layout.is-wide-right .sitw-wt-layout-grid{grid-template-columns:1fr 2fr}.sitw-wt-layout.is-equal-3 .sitw-wt-layout-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.sitw-wt-layout.is-equal-4 .sitw-wt-layout-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.sitw-wt-layout.gap-none .sitw-wt-layout-grid{gap:0}.sitw-wt-layout.gap-small .sitw-wt-layout-grid{gap:8px}.sitw-wt-layout.gap-large .sitw-wt-layout-grid{gap:28px}.sitw-wt-layout-cell{min-width:0;padding:16px;border:1px solid rgba(255,255,255,.075);border-radius:12px;background:rgba(255,255,255,.018)}.sitw-wt-layout-cell h3{margin:0 0 7px;color:#fff;font-size:16px}.sitw-wt-layout.tone-accent{background:rgba(155,48,255,.08)}.sitw-wt-layout.tone-contrast{background:#050507}.sitw-wt-visual-stage{position:relative;overflow:hidden;margin-top:14px;border-radius:14px}.sitw-wt-visual-stage>img{display:block;width:100%;max-height:540px;object-fit:contain}.sitw-wt-hotspot{position:absolute;display:grid;place-items:center;width:34px;height:34px;transform:translate(-50%,-50%);border:2px solid #fff;border-radius:50%;background:#9b30ff;color:#fff;font:850 10px Inter,sans-serif;box-shadow:0 6px 20px rgba(0,0,0,.45);cursor:pointer}.sitw-wt-visual-panel{min-height:52px;margin-top:10px;padding:12px 14px;border:1px solid rgba(255,255,255,.08);border-radius:11px;color:rgba(255,255,255,.68)}.sitw-wt-visual-panel p{margin:5px 0 0}.sitw-wt-before-after{--split:50%;position:relative;overflow:hidden;aspect-ratio:16/9;border-radius:14px}.sitw-wt-before-after img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}.sitw-wt-before-after .is-after{clip-path:inset(0 0 0 var(--split))}.sitw-wt-before-after input{position:absolute;z-index:2;right:8%;bottom:16px;left:8%;width:84%}.sitw-wt-collection{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:14px}.sitw-wt-collection.is-carousel{display:flex;overflow-x:auto;scroll-snap-type:x mandatory}.sitw-wt-collection figure{min-width:0;margin:0;scroll-snap-align:start}.sitw-wt-collection.is-carousel figure{flex:0 0 70%}.sitw-wt-collection img{display:block;width:100%;aspect-ratio:4/3;border-radius:10px;object-fit:cover}.sitw-wt-collection figcaption{padding:6px;color:rgba(255,255,255,.5);font-size:9px}.sitw-wt-visual-diagram{display:grid;gap:10px;margin-top:14px}.sitw-wt-visual-diagram.is-process,.sitw-wt-visual-diagram.is-cycle{grid-template-columns:repeat(auto-fit,minmax(140px,1fr))}.sitw-wt-visual-diagram.is-matrix,.sitw-wt-visual-diagram.is-org,.sitw-wt-visual-diagram.is-infographic{grid-template-columns:repeat(2,minmax(0,1fr))}.sitw-wt-visual-diagram article{position:relative;padding:15px;border:1px solid rgba(199,155,255,.15);border-radius:12px;background:rgba(155,48,255,.05)}.sitw-wt-visual-diagram article h3,.sitw-wt-visual-diagram article p{margin:0}.sitw-wt-visual-diagram article p{margin-top:6px;color:rgba(255,255,255,.6)}.sitw-wt-visual-diagram.is-bar article::after,.sitw-wt-visual-diagram.is-line article::after,.sitw-wt-visual-diagram.is-pie article::after{content:"";display:block;width:var(--value);height:8px;margin-top:10px;border-radius:99px;background:linear-gradient(90deg,#8d36da,#c99af0)}.sitw-wt-resource{margin-top:14px}.sitw-wt-resource>a{display:block;padding:18px;border:1px solid rgba(199,155,255,.2);border-radius:12px;background:rgba(155,48,255,.06);text-align:center}.sitw-wt-activity-work{display:grid;gap:8px;margin-top:15px}.sitw-wt-activity-work textarea{min-height:120px;width:100%;padding:12px;border:1px solid rgba(255,255,255,.1);border-radius:11px;background:rgba(255,255,255,.035);color:#fff;font:500 13px Inter,sans-serif}.sitw-wt-choice,.sitw-wt-activity-submit,.sitw-wt-order-item button{min-height:40px;padding:9px 13px;border:1px solid rgba(199,155,255,.2);border-radius:10px;background:rgba(155,48,255,.07);color:#ead8ff;font:750 11px Inter,sans-serif;cursor:pointer}.sitw-wt-choice.is-selected{background:rgba(155,48,255,.22);color:#fff}.sitw-wt-activity-result{margin-top:12px;padding:14px;border:1px solid rgba(141,255,178,.18);border-radius:11px;background:rgba(51,209,122,.05)}.sitw-wt-check,.sitw-wt-order-item{display:flex;align-items:center;gap:9px;padding:10px;border:1px solid rgba(255,255,255,.07);border-radius:10px}.sitw-wt-order-item span{flex:1}.sitw-wt-visual-fallback,.sitw-wt-activity-fallback{color:rgba(255,255,255,.65);line-height:1.65}
@media(max-width:720px){.sitw-wt-layout-grid,.sitw-wt-layout.is-wide-left .sitw-wt-layout-grid,.sitw-wt-layout.is-wide-right .sitw-wt-layout-grid,.sitw-wt-layout.is-equal-3 .sitw-wt-layout-grid,.sitw-wt-layout.is-equal-4 .sitw-wt-layout-grid{grid-template-columns:1fr}.sitw-wt-collection{grid-template-columns:repeat(2,minmax(0,1fr))}.sitw-wt-visual-diagram.is-matrix,.sitw-wt-visual-diagram.is-org,.sitw-wt-visual-diagram.is-infographic{grid-template-columns:1fr}}
.sitw-ed-q [data-q-type]{max-width:170px;padding:6px;border:1px solid rgba(255,255,255,.1);border-radius:7px;background:#17141d;color:#fff}.sitw-ed-q-meta{display:flex;gap:10px;margin:8px 0}.sitw-ed-q-meta label{display:flex;align-items:center;gap:5px;color:rgba(255,255,255,.45);font-size:9px}.sitw-ed-q-meta input,.sitw-ed-q-meta select{width:62px;padding:5px;border:1px solid rgba(255,255,255,.1);border-radius:6px;background:#15131a;color:#fff}.sitw-ed-q [data-q-answers],.sitw-ed-q [data-q-hint],.sitw-ed-q [data-q-feedback]{width:100%;min-height:62px;margin-top:7px;padding:9px;border:1px solid rgba(255,255,255,.09);border-radius:8px;background:rgba(255,255,255,.03);color:#fff}.sitw-curso-text-answer{width:100%;min-height:46px;padding:12px;border:1px solid rgba(255,255,255,.12);border-radius:10px;background:rgba(255,255,255,.035);color:#fff;font:500 14px Inter,sans-serif}.sitw-curso-question textarea.sitw-curso-text-answer{min-height:140px;resize:vertical}.sitw-curso-hint{margin:8px 0;color:rgba(255,255,255,.55);font-size:11px}.sitw-curso-hint summary{cursor:pointer;color:#d7b4ef}
.sitw-curso-match{display:grid;gap:8px}.sitw-curso-match label{display:grid;grid-template-columns:1fr minmax(140px,220px);align-items:center;gap:10px;padding:10px;border:1px solid rgba(255,255,255,.08);border-radius:9px}.sitw-curso-match select{padding:9px;border:1px solid rgba(255,255,255,.12);border-radius:8px;background:#15131a;color:#fff}.sitw-curso-order{display:grid;gap:7px}.sitw-curso-order>div{display:grid;grid-template-columns:1fr auto auto;align-items:center;gap:5px;padding:10px;border:1px solid rgba(255,255,255,.08);border-radius:9px}.sitw-curso-order button{width:32px;height:32px;border:1px solid rgba(199,155,255,.18);border-radius:7px;background:rgba(155,48,255,.07);color:#d9b8ef}
.sitw-ed-assessment-policy{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin:14px 0;padding:12px;border:1px solid rgba(199,155,255,.14);border-radius:11px;background:rgba(155,48,255,.035)}.sitw-ed-assessment-policy label{display:grid;gap:4px;color:rgba(255,255,255,.48);font-size:9px}.sitw-ed-assessment-policy input,.sitw-ed-assessment-policy select{min-width:0;padding:7px;border:1px solid rgba(255,255,255,.1);border-radius:7px;background:#15131a;color:#fff}.sitw-curso-timer{color:#ffcc73}
.sitw-wc-save{display:grid;grid-template-columns:1fr auto;gap:7px;margin-bottom:14px}.sitw-wc-save input,.sitw-wc-save select{min-width:0;padding:9px;border:1px solid rgba(255,255,255,.1);border-radius:8px;background:#17151b;color:#fff}.sitw-wc-save button{grid-column:1/-1;min-height:36px;border:1px solid rgba(199,155,255,.25);border-radius:9px;background:rgba(155,48,255,.1);color:#ead8ff;font-weight:800}.sitw-wc-list{display:grid;gap:7px}.sitw-wc-item{display:grid;grid-template-columns:1fr auto auto auto;align-items:center;gap:5px;padding:10px;border:1px solid rgba(255,255,255,.075);border-radius:10px}.sitw-wc-item b,.sitw-wc-item small{display:block}.sitw-wc-item small{margin-top:3px;color:rgba(255,255,255,.35);font-size:8px}.sitw-wc-item button{height:30px;border:1px solid rgba(199,155,255,.17);border-radius:7px;background:rgba(155,48,255,.06);color:#d9b8ef;font-size:8px}.sitw-wc-import{display:block;margin-top:13px;padding:11px;border:1px dashed rgba(255,255,255,.12);border-radius:9px;color:rgba(255,255,255,.45);font-size:9px;text-align:center;cursor:pointer}.sitw-wc-import input{display:none}.sitw-world-component{margin:20px 0;padding:16px;border:1px dashed rgba(199,155,255,.35);border-radius:12px;background:rgba(155,48,255,.045);color:#d9b8ef}.sitw-world-component-missing{padding:15px;border:1px solid rgba(255,112,132,.25);border-radius:10px;color:#ff9caf}

/* Engine behavior that must remain readable outside the desktop editor. */
.sitw-wt-diagram-background { fill: #0d0c11; }
.sitw-wt-diagram-edge-label {
  fill: #ead8ff;
  stroke: #0d0c11;
  stroke-width: 5px;
  paint-order: stroke;
  font: 700 11px Inter, sans-serif;
}
.sitw-wt-diagram-node.is-root > :first-child { stroke-width: 3; }
.sitw-wt-diagram-node-list small {
  display: block;
  color: rgba(199, 155, 255, .62);
  font-size: 9px;
  text-transform: uppercase;
}

/* Direct-manipulation diagram canvas inside WORLD authoring. */
.sitw-wt-diagram-canvas-status {
  min-width: 190px;
  margin-right: auto;
  color: rgba(255, 255, 255, .52);
  font: 650 10px/1.35 Inter, sans-serif;
}
.sitw-wt-diagram-toolbar button.is-primary,
.sitw-wt-diagram-toolbar button.is-active {
  border-color: rgba(117, 230, 161, .58);
  background: rgba(117, 230, 161, .12);
  color: #a8f2c2;
}
.sitw-wt-diagram-toolbar button:disabled { opacity: .32; cursor: default; }
.sitw-ed-doc .sitw-wt-diagram-stage {
  min-height: 520px;
  aspect-ratio: auto;
  touch-action: none;
  cursor: grab;
  box-shadow: inset 0 0 0 1px rgba(199, 155, 255, .025), 0 16px 44px rgba(0, 0, 0, .16);
}
.sitw-ed-doc .sitw-wt-diagram-stage.is-panning { cursor: grabbing; }
.sitw-wt-diagram-stage.is-zoomed svg { touch-action: none; cursor: grab; }
.sitw-wt-diagram-stage.is-zoomed.is-panning svg { cursor: grabbing; }
.sitw-wt-diagram-grid-line { fill: none; stroke: rgba(255, 255, 255, .055); stroke-width: 1; }
svg[data-diagram-editor="1"] { overflow: visible; outline: none; user-select: none; }
svg[data-diagram-editor="1"] .sitw-wt-diagram-node { cursor: grab; outline: none; }
svg[data-diagram-editor="1"] .sitw-wt-diagram-node:active { cursor: grabbing; }
svg[data-diagram-editor="1"] .sitw-wt-diagram-node.is-selected > :first-child,
svg[data-diagram-editor="1"] .sitw-wt-diagram-node:focus > :first-child {
  stroke: #fff;
  stroke-width: 3;
  filter: drop-shadow(0 0 8px rgba(199, 155, 255, .65));
}
.sitw-wt-diagram-edge-hit { fill: none; stroke: transparent; stroke-width: 18; pointer-events: none; }
svg[data-diagram-editor="1"] .sitw-wt-diagram-edge-hit { pointer-events: stroke; cursor: pointer; }
svg[data-diagram-editor="1"] .sitw-wt-diagram-connection { outline: none; }
svg[data-diagram-editor="1"] .sitw-wt-diagram-connection.is-selected .sitw-wt-diagram-edge,
svg[data-diagram-editor="1"] .sitw-wt-diagram-connection:focus .sitw-wt-diagram-edge {
  stroke: #fff;
  stroke-width: 4;
  filter: drop-shadow(0 0 6px rgba(199, 155, 255, .8));
}
.sitw-wt-diagram-resize {
  display: none;
  fill: #fff;
  stroke: #8d36da;
  stroke-width: 3;
  cursor: nwse-resize;
}
.sitw-wt-diagram-node.is-selected .sitw-wt-diagram-resize { display: block; }
.sitw-wt-diagram-port {
  display: none;
  fill: #75e6a1;
  stroke: #0d0c11;
  stroke-width: 3;
  pointer-events: none;
}
.sitw-wt-diagram-stage.is-connect-mode .sitw-wt-diagram-node { cursor: crosshair; }
.sitw-wt-diagram-stage.is-connect-mode .sitw-wt-diagram-port,
.sitw-wt-diagram-node.is-connect-source .sitw-wt-diagram-port { display: block; }
.sitw-wt-diagram-node.is-connect-source > :first-child {
  stroke: #75e6a1;
  stroke-width: 4;
  filter: drop-shadow(0 0 9px rgba(117, 230, 161, .65));
}
.sitw-wt-diagram-preview {
  fill: none;
  stroke: #75e6a1;
  stroke-width: 3;
  stroke-dasharray: 10 8;
  pointer-events: none;
}

.sitw-wt-layout.mode-section .sitw-wt-layout-grid { grid-template-columns: 1fr; }
.sitw-wt-layout.mode-grid .sitw-wt-layout-grid {
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
}
.sitw-wt-layout.mode-grid.is-single .sitw-wt-layout-grid { grid-template-columns: 1fr; }
.sitw-wt-layout-cell { min-width: 0; }

.sitw-wt-media-empty {
  display: grid;
  min-height: 90px;
  place-items: center;
  margin: 0;
  padding: 16px;
  border: 1px dashed rgba(255, 255, 255, .14);
  border-radius: 12px;
  color: rgba(255, 255, 255, .48);
  text-align: center;
}
.sitw-wt-visual-stage.is-empty { min-height: 260px; }
.sitw-wt-hotspot.is-visited { border-color: #75e6a1; }
.sitw-wt-hotspot.is-active { outline: 3px solid rgba(255, 255, 255, .7); outline-offset: 2px; }
.sitw-wt-visual-panel small { display: block; margin-top: 8px; color: rgba(255, 255, 255, .45); }
.sitw-wt-collection figure figcaption b { display: block; }
.sitw-wt-collection figure figcaption p { margin: 5px 0 0; color: rgba(255, 255, 255, .62); }

.sitw-wt-carousel { overflow: hidden; }
.sitw-wt-carousel > figure { margin: 0; }
.sitw-wt-carousel > figure[hidden] { display: none; }
.sitw-wt-carousel > figure img {
  display: block;
  width: 100%;
  max-height: 520px;
  border-radius: 13px;
  object-fit: contain;
}
.sitw-wt-carousel > figure figcaption { padding: 12px 3px; color: rgba(255, 255, 255, .72); }
.sitw-wt-carousel-nav { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 10px; margin-top: 8px; }
.sitw-wt-carousel-nav span { color: rgba(255, 255, 255, .55); text-align: center; }
.sitw-wt-carousel-nav button,
.sitw-wt-activity-submit {
  min-height: 38px;
  padding: 8px 13px;
  border: 1px solid rgba(199, 155, 255, .26);
  border-radius: 9px;
  background: rgba(155, 48, 255, .1);
  color: #ead8ff;
  font-weight: 750;
  cursor: pointer;
}
.sitw-wt-carousel-nav button:disabled { opacity: .35; cursor: default; }

.sitw-wt-chart { margin: 18px 0; }
.sitw-wt-chart.is-bar { display: grid; gap: 11px; }
.sitw-wt-bar-row { display: grid; grid-template-columns: minmax(90px, 1fr) minmax(120px, 3fr) 44px; align-items: center; gap: 10px; }
.sitw-wt-bar-row > span:first-child { overflow-wrap: anywhere; color: rgba(255, 255, 255, .72); }
.sitw-wt-bar-row > b { color: #ead8ff; text-align: right; }
.sitw-wt-bar-meter { overflow: hidden; height: 12px; border-radius: 99px; background: rgba(255, 255, 255, .08); }
.sitw-wt-bar-meter i { display: block; height: 100%; border-radius: inherit; background: linear-gradient(90deg, #8d36da, #c99af0); }
.sitw-wt-chart.is-line svg { display: block; width: 100%; min-height: 220px; }
.sitw-wt-line-grid { stroke: rgba(255, 255, 255, .09); stroke-width: 1; }
.sitw-wt-line-series { fill: none; stroke: #c99af0; stroke-linecap: round; stroke-linejoin: round; stroke-width: 4; }
.sitw-wt-line-point { fill: #fff; stroke: #8d36da; stroke-width: 3; }
.sitw-wt-chart.is-pie { display: grid; grid-template-columns: minmax(150px, 240px) 1fr; align-items: center; gap: 24px; }
.sitw-wt-pie-graphic { width: 100%; aspect-ratio: 1; border: 1px solid rgba(255, 255, 255, .12); border-radius: 50%; }
.sitw-wt-pie-legend { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; }
.sitw-wt-pie-legend li { display: flex; align-items: center; gap: 8px; color: rgba(255, 255, 255, .72); }
.sitw-wt-pie-legend i { flex: none; width: 10px; height: 10px; border-radius: 3px; }
.sitw-wt-chart-data { width: 100%; margin-top: 12px; border-collapse: collapse; }
.sitw-wt-chart-data caption { padding: 8px; color: rgba(255, 255, 255, .55); text-align: left; }
.sitw-wt-chart-data th,
.sitw-wt-chart-data td { padding: 8px; border-top: 1px solid rgba(255, 255, 255, .08); color: rgba(255, 255, 255, .68); text-align: left; }

.sitw-wt-activity-work textarea {
  width: 100%;
  min-height: 130px;
  margin-bottom: 10px;
  padding: 12px;
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: 10px;
  background: rgba(255, 255, 255, .035);
  color: #fff;
  resize: vertical;
}
.sitw-wt-activity-status,
.sitw-wt-activity-result { margin-top: 12px; padding: 11px 13px; border: 1px solid rgba(199, 155, 255, .15); border-radius: 10px; color: rgba(255, 255, 255, .7); }
.sitw-wt-activity-status.is-correct { border-color: rgba(83, 217, 135, .35); color: #8eebb1; }
.sitw-wt-activity-status.is-incorrect { border-color: rgba(255, 113, 134, .35); color: #ff9caf; }
.sitw-wt-activity-match { display: grid; grid-template-columns: minmax(0, 1fr) minmax(150px, 220px); align-items: center; gap: 12px; padding: 10px 0; border-bottom: 1px solid rgba(255, 255, 255, .075); }
.sitw-wt-activity-match select { min-width: 0; padding: 9px; border: 1px solid rgba(255, 255, 255, .12); border-radius: 8px; background: #15131a; color: #fff; }
.sitw-wt-order-item button:disabled { opacity: .3; }

.sitw-wt-diagram-edges { margin-top: 14px; border: 1px solid rgba(255, 255, 255, .08); border-radius: 10px; }
.sitw-wt-diagram-edges > summary { padding: 10px; color: rgba(255, 255, 255, .62); font-size: 10px; font-weight: 800; cursor: pointer; }
.sitw-wt-diagram-edge-editor { display: grid; gap: 8px; padding: 0 9px 9px; }
.sitw-wt-diagram-edge-editor > article { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; padding: 9px; border: 1px solid rgba(255, 255, 255, .07); border-radius: 9px; }
.sitw-wt-diagram-edge-editor .sitw-wt-repeat-head { grid-column: 1 / -1; }
.sitw-wt-diagram-edges > .sitw-wt-add-item { margin: 0 9px 9px; }

@media (max-width: 900px) {
  .sitw-wt-layout.is-equal-3 .sitw-wt-layout-grid,
  .sitw-wt-layout.is-equal-4 .sitw-wt-layout-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 720px) {
  .sitw-wt-layout .sitw-wt-layout-grid,
  .sitw-wt-layout.is-wide-left .sitw-wt-layout-grid,
  .sitw-wt-layout.is-wide-right .sitw-wt-layout-grid,
  .sitw-wt-layout.is-equal-3 .sitw-wt-layout-grid,
  .sitw-wt-layout.is-equal-4 .sitw-wt-layout-grid { grid-template-columns: 1fr; }
  .sitw-wt-collection { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .sitw-wt-chart.is-pie { grid-template-columns: 1fr; }
  .sitw-wt-pie-graphic { max-width: 240px; margin: auto; }
}

@media (max-width: 520px) {
  .sitw-wt-diagram .sitw-wt-shell,
  .sitw-wt-layout .sitw-wt-shell,
  .sitw-wt-visual .sitw-wt-shell,
  .sitw-wt-activity .sitw-wt-shell { padding: 16px; }
  .sitw-wt-diagram-toolbar { flex-wrap: wrap; justify-content: flex-start; }
  .sitw-wt-diagram-canvas-status { width: 100%; min-width: 0; }
  .sitw-wt-diagram-stage { min-height: 300px; aspect-ratio: auto; }
  .sitw-ed-doc .sitw-wt-diagram-stage { min-height: 360px; }
  .sitw-wt-collection { grid-template-columns: 1fr; }
  .sitw-wt-bar-row { grid-template-columns: 1fr auto; }
  .sitw-wt-bar-meter { grid-column: 1 / -1; grid-row: 2; }
  .sitw-wt-activity-match { grid-template-columns: 1fr; }
}

.sitw-wt-shell {
  overflow: hidden;
  border: 1px solid var(--wt-line);
  border-radius: 18px;
  background: linear-gradient(145deg, rgba(255, 255, 255, .04), rgba(255, 255, 255, .018));
}

.sitw-wt-kicker {
  display: block;
  margin-bottom: 9px;
  color: #d8b0f6;
  font-size: 9px;
  font-weight: 900;
  letter-spacing: .17em;
  text-transform: uppercase;
}

.sitw-wt-title {
  margin: 0 0 9px;
  color: #fff;
  font-family: "Space Grotesk", Inter, sans-serif;
  font-size: clamp(20px, 2.8vw, 29px);
  line-height: 1.08;
}

.sitw-wt-copy {
  margin: 0;
  color: rgba(255, 255, 255, .72);
  line-height: 1.7;
  white-space: pre-line;
}

.sitw-wt-contentbox .sitw-wt-shell {
  padding: 24px;
  border-left: 3px solid var(--wt-accent);
}

.sitw-wt-contentbox[data-variant="info"] { --wt-accent: #60a5fa; }
.sitw-wt-contentbox[data-variant="idea"] { --wt-accent: #c084fc; }
.sitw-wt-contentbox[data-variant="warning"] { --wt-accent: #fbbf24; }
.sitw-wt-contentbox[data-variant="remember"] { --wt-accent: #34d399; }
.sitw-wt-contentbox[data-variant="definition"] { --wt-accent: #f472b6; }
.sitw-wt-contentbox[data-variant="reflect"] { --wt-accent: #fb923c; }
.sitw-wt-contentbox[data-variant="example"] { --wt-accent: #22d3ee; }
.sitw-wt-contentbox[data-variant="experiment"] { --wt-accent: #a3e635; }

.sitw-wt-reveal .sitw-wt-shell {
  padding: 24px;
}

.sitw-wt-reveal-action,
.sitw-wt-nav button,
.sitw-wt-flip,
.sitw-wt-tab {
  min-height: 40px;
  border: 1px solid rgba(199, 155, 255, .28);
  border-radius: 10px;
  background: rgba(155, 48, 255, .1);
  color: #ead8ff;
  padding: 9px 14px;
  font-size: 11px;
  font-weight: 800;
  cursor: pointer;
}

.sitw-wt-reveal-action:hover,
.sitw-wt-nav button:hover,
.sitw-wt-flip:hover,
.sitw-wt-tab:hover,
.sitw-wt-tab[aria-selected="true"] {
  background: rgba(155, 48, 255, .2);
  color: #fff;
}

.sitw-wt-reveal-stage {
  margin-top: 15px;
  padding: 15px 17px;
  border: 1px solid rgba(199, 155, 255, .16);
  border-radius: 12px;
  background: rgba(155, 48, 255, .055);
}

.sitw-wt-reveal-stage[hidden] {
  display: none;
}

.sitw-wt-reveal-stage b {
  display: block;
  margin-bottom: 5px;
  color: #dcb7f6;
  font-size: 10px;
}

.sitw-wt-accordion .sitw-wt-shell {
  padding: 8px;
}

.sitw-wt-accordion details {
  border-bottom: 1px solid rgba(255, 255, 255, .075);
}

.sitw-wt-accordion details:last-child {
  border-bottom: 0;
}

.sitw-wt-accordion summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 15px 14px;
  color: #fff;
  font-weight: 750;
  cursor: pointer;
  list-style: none;
}

.sitw-wt-accordion summary::after {
  content: "+";
  color: #c99af0;
  font-size: 18px;
}

.sitw-wt-accordion details[open] summary::after {
  content: "-";
}

.sitw-wt-accordion-body {
  padding: 0 14px 17px;
  color: rgba(255, 255, 255, .68);
  line-height: 1.7;
  white-space: pre-line;
}

.sitw-wt-tabs .sitw-wt-shell {
  padding: 8px;
}

.sitw-wt-tabs-list {
  display: flex;
  gap: 5px;
  overflow-x: auto;
  padding: 4px;
}

.sitw-wt-tab {
  flex: none;
  background: transparent;
  border-color: transparent;
  color: rgba(255, 255, 255, .5);
}

.sitw-wt-tab-panel {
  min-height: 110px;
  padding: 20px 18px;
  color: rgba(255, 255, 255, .75);
  line-height: 1.72;
  white-space: pre-line;
}

.sitw-wt-tab-panel[hidden] {
  display: none;
}

.sitw-wt-steps .sitw-wt-shell {
  padding: 22px;
}

.sitw-wt-step-track {
  display: grid;
  grid-template-columns: repeat(var(--wt-count, 3), 1fr);
  gap: 8px;
  margin-bottom: 20px;
}

.sitw-wt-step-dot {
  position: relative;
  border: 0;
  background: transparent;
  color: rgba(255, 255, 255, .35);
  padding: 0;
  text-align: left;
  cursor: pointer;
}

.sitw-wt-step-dot::before {
  content: "";
  display: block;
  height: 4px;
  margin-bottom: 8px;
  border-radius: 99px;
  background: rgba(255, 255, 255, .09);
}

.sitw-wt-step-dot.is-active,
.sitw-wt-step-dot.is-done {
  color: #fff;
}

.sitw-wt-step-dot.is-active::before,
.sitw-wt-step-dot.is-done::before {
  background: linear-gradient(90deg, #8d36da, #c99af0);
}

.sitw-wt-step-content h3 {
  margin: 0 0 8px;
  color: #fff;
}

.sitw-wt-step-content p {
  margin: 0;
  color: rgba(255, 255, 255, .7);
  line-height: 1.7;
  white-space: pre-line;
}

.sitw-wt-steps[data-orientation="vertical"] .sitw-wt-shell {
  display: grid;
  grid-template-columns: minmax(120px, 180px) minmax(0, 1fr);
  gap: 22px;
}

.sitw-wt-steps[data-orientation="vertical"] .sitw-wt-step-track {
  grid-template-columns: 1fr;
  align-content: start;
  margin-bottom: 0;
}

.sitw-wt-steps[data-orientation="vertical"] .sitw-wt-nav {
  grid-column: 2;
}

.sitw-wt-nav {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  margin-top: 18px;
}

.sitw-wt-nav button:disabled {
  opacity: .35;
  cursor: default;
}

.sitw-wt-flashcards .sitw-wt-shell {
  padding: 20px;
}

.sitw-wt-card-scene {
  perspective: 1000px;
}

.sitw-wt-card {
  position: relative;
  min-height: 230px;
  transform-style: preserve-3d;
  transition: transform .5s cubic-bezier(.2, .7, .2, 1);
}

.sitw-wt-card.is-flipped {
  transform: rotateY(180deg);
}

.sitw-wt-card-face {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 28px;
  border: 1px solid rgba(199, 155, 255, .22);
  border-radius: 16px;
  background: radial-gradient(circle at 50% 0, rgba(155, 48, 255, .12), transparent 65%), #121018;
  color: #fff;
  text-align: center;
  backface-visibility: hidden;
  overflow: auto;
  white-space: pre-line;
}

.sitw-wt-card-face.is-back {
  transform: rotateY(180deg);
  background: radial-gradient(circle at 50% 0, rgba(51, 209, 122, .1), transparent 65%), #101613;
}

.sitw-wt-flash-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
  color: rgba(255, 255, 255, .42);
  font-size: 10px;
}

.sitw-wt-flash-meta .sitw-wt-flip {
  margin-left: auto;
}

.sitw-wt-compare .sitw-wt-shell {
  overflow-x: auto;
}

.sitw-wt-compare table {
  width: 100%;
  min-width: 520px;
  margin: 0;
  border-collapse: collapse;
}

.sitw-wt-compare th,
.sitw-wt-compare td {
  width: 50%;
  border: 0;
  border-bottom: 1px solid rgba(255, 255, 255, .075);
  padding: 14px 18px;
  color: rgba(255, 255, 255, .72);
  text-align: left;
}

.sitw-wt-compare th {
  background: rgba(155, 48, 255, .09);
  color: #fff;
  font-size: 13px;
}

.sitw-wt-compare caption {
  padding: 15px 18px;
  color: #fff;
  font-family: "Space Grotesk", Inter, sans-serif;
  font-size: 17px;
  font-weight: 750;
  text-align: left;
}

.sitw-wt-compare td {
  white-space: pre-line;
}

.sitw-wt-timeline .sitw-wt-shell {
  padding: 22px;
}

.sitw-wt-timeline-list {
  display: grid;
  gap: 0;
}

.sitw-wt-event {
  position: relative;
  display: grid;
  grid-template-columns: 90px 18px 1fr;
  gap: 12px;
  min-height: 92px;
}

.sitw-wt-event-date {
  color: #c99af0;
  font-size: 11px;
  font-weight: 850;
  text-align: right;
}

.sitw-wt-event-marker {
  position: relative;
}

.sitw-wt-event-marker::before {
  content: "";
  position: absolute;
  top: 5px;
  left: 5px;
  width: 8px;
  height: 8px;
  border: 2px solid #c99af0;
  border-radius: 50%;
  background: #121018;
}

.sitw-wt-event-marker::after {
  content: "";
  position: absolute;
  top: 17px;
  bottom: -5px;
  left: 9px;
  width: 1px;
  background: rgba(199, 155, 255, .25);
}

.sitw-wt-event:last-child .sitw-wt-event-marker::after {
  display: none;
}

.sitw-wt-event-body h3 {
  margin: 0 0 5px;
  color: #fff;
  font-size: 16px;
}

.sitw-wt-event-body p {
  margin: 0;
  color: rgba(255, 255, 255, .65);
  line-height: 1.6;
  white-space: pre-line;
}

.sitw-wt-timeline[data-orientation="horizontal"] .sitw-wt-timeline-list {
  grid-auto-flow: column;
  grid-auto-columns: minmax(240px, 1fr);
  gap: 12px;
  overflow-x: auto;
  padding-bottom: 7px;
}

.sitw-wt-timeline[data-orientation="horizontal"] .sitw-wt-event {
  display: block;
  min-height: 0;
  padding: 16px;
  border-top: 2px solid rgba(199, 155, 255, .32);
  border-radius: 0 0 12px 12px;
  background: rgba(255, 255, 255, .025);
}

.sitw-wt-timeline[data-orientation="horizontal"] .sitw-wt-event-date {
  display: block;
  margin-bottom: 9px;
  text-align: left;
}

.sitw-wt-timeline[data-orientation="horizontal"] .sitw-wt-event-marker {
  display: none;
}

/* Semantic content remains complete when JavaScript is unavailable. */
.sitw-wt-fallback-list,
.sitw-wt-fallback-tabs {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.sitw-wt-fallback-item {
  padding: 14px 16px;
  border: 1px solid rgba(199, 155, 255, .14);
  border-radius: 12px;
  background: rgba(155, 48, 255, .045);
}

.sitw-wt-fallback-item b,
.sitw-wt-fallback-item h3 {
  display: block;
  margin: 0 0 6px;
  color: #fff;
  font-size: 14px;
}

.sitw-wt-fallback-item p {
  margin: 0;
  color: rgba(255, 255, 255, .68);
  line-height: 1.65;
  white-space: pre-line;
}

.sitw-wt-fallback-steps {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  counter-reset: world-step;
  list-style: none;
}

.sitw-wt-fallback-steps li {
  position: relative;
  padding: 15px 16px 15px 48px;
  border: 1px solid rgba(255, 255, 255, .08);
  border-radius: 12px;
  background: rgba(255, 255, 255, .02);
  counter-increment: world-step;
}

.sitw-wt-fallback-steps li::before {
  content: counter(world-step);
  position: absolute;
  top: 15px;
  left: 15px;
  display: grid;
  place-items: center;
  width: 23px;
  height: 23px;
  border-radius: 50%;
  background: rgba(155, 48, 255, .16);
  color: #ddbaf6;
  font-size: 9px;
  font-weight: 850;
}

.sitw-wt-fallback-steps h3,
.sitw-wt-fallback-steps p {
  margin: 0;
}

.sitw-wt-fallback-steps p {
  margin-top: 5px;
  color: rgba(255, 255, 255, .66);
  white-space: pre-line;
}

.sitw-wt-fallback-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: 0;
}

.sitw-wt-fallback-cards dt,
.sitw-wt-fallback-cards dd {
  margin: 0;
  padding: 14px 16px;
  white-space: pre-line;
}

.sitw-wt-fallback-cards dt {
  margin-top: 10px;
  border: 1px solid rgba(199, 155, 255, .18);
  border-radius: 12px 12px 0 0;
  background: rgba(155, 48, 255, .075);
  color: #fff;
  font-weight: 750;
}

.sitw-wt-fallback-cards dd {
  border: 1px solid rgba(255, 255, 255, .08);
  border-top: 0;
  border-radius: 0 0 12px 12px;
  color: rgba(255, 255, 255, .66);
}

.sitw-world-tool[data-world-error="1"] .sitw-wt-shell {
  border-color: rgba(255, 180, 80, .45);
}

/* Editor-only state. */
.sitw-ed-doc .sitw-world-tool {
  cursor: pointer;
}

body[data-world-mode="design"] .sitw-ed-doc .sitw-world-tool {
  cursor: grab;
}

.sitw-ed-doc .sitw-world-tool.is-dragging,
.sitw-wt-repeat-item.is-dragging {
  opacity: .35;
}

.sitw-ed-doc .sitw-world-tool.is-drop-before::after,
.sitw-ed-doc .sitw-world-tool.is-drop-after::after,
.sitw-wt-repeat-item.is-drop-before::after,
.sitw-wt-repeat-item.is-drop-after::after {
  content: "";
  position: absolute;
  z-index: 8;
  right: 0;
  left: 0;
  height: 3px;
  border-radius: 99px;
  background: #c99af0;
  box-shadow: 0 0 16px rgba(199, 155, 255, .6);
}

.sitw-ed-doc .sitw-world-tool.is-drop-before::after,
.sitw-wt-repeat-item.is-drop-before::after { top: -10px; }
.sitw-ed-doc .sitw-world-tool.is-drop-after::after,
.sitw-wt-repeat-item.is-drop-after::after { bottom: -10px; }

.sitw-ed-doc .sitw-world-tool::before {
  content: attr(data-world-label);
  position: absolute;
  z-index: 3;
  top: -9px;
  left: 14px;
  padding: 3px 8px;
  border: 1px solid rgba(199, 155, 255, .2);
  border-radius: 999px;
  background: #16121d;
  color: rgba(229, 202, 249, .68);
  font-size: 8px;
  font-weight: 900;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.sitw-ed-doc .sitw-world-tool:hover,
.sitw-ed-doc .sitw-world-tool.is-selected,
.sitw-ed-doc .sitw-world-tool:focus-visible {
  outline: 2px solid rgba(199, 155, 255, .38);
  outline-offset: 5px;
  border-radius: 18px;
}

.sitw-wt-editor-bar {
  position: fixed;
  z-index: 190;
  display: flex;
  gap: 4px;
  padding: 5px;
  border: 1px solid rgba(199, 155, 255, .25);
  border-radius: 10px;
  background: rgba(18, 15, 24, .98);
  box-shadow: 0 18px 60px rgba(0, 0, 0, .55);
}

.sitw-wt-editor-bar[hidden] {
  display: none;
}

.sitw-wt-editor-bar button {
  min-width: 31px;
  height: 30px;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: rgba(255, 255, 255, .62);
  cursor: pointer;
}

.sitw-wt-editor-bar button:hover {
  background: rgba(155, 48, 255, .15);
  color: #fff;
}

.sitw-wt-property-list {
  display: grid;
  gap: 13px;
}

.sitw-wt-rich-help {
  margin: 0 0 14px;
  border: 1px solid rgba(255, 255, 255, .075);
  border-radius: 10px;
  background: rgba(255, 255, 255, .018);
}

.sitw-wt-learning-rules {
  margin: 0 0 14px;
  border: 1px solid rgba(141, 255, 178, .14);
  border-radius: 10px;
  background: rgba(51, 209, 122, .025);
}

.sitw-wt-learning-rules summary {
  padding: 10px 11px;
  color: rgba(177, 242, 201, .7);
  font-size: 10px;
  font-weight: 800;
  cursor: pointer;
}

.sitw-wt-learning-fields {
  display: grid;
  gap: 11px;
  padding: 0 11px 12px;
}
.sitw-wt-diagram-author-actions{display:grid;grid-template-columns:repeat(2,1fr);gap:6px;margin-bottom:14px}.sitw-wt-diagram-author-actions button{min-height:34px;border:1px solid rgba(199,155,255,.2);border-radius:8px;background:rgba(155,48,255,.08);color:#dfc2f3;font:750 9px Inter,sans-serif;cursor:pointer}.sitw-wt-diagram-node.is-selected>*:first-child{stroke:#fff;stroke-width:3}

.sitw-wt-rich-help summary {
  padding: 10px 11px;
  color: rgba(255, 255, 255, .56);
  font-size: 10px;
  font-weight: 750;
  cursor: pointer;
}

.sitw-wt-rich-help p {
  margin: 0;
  padding: 0 11px 11px;
  color: rgba(255, 255, 255, .42);
  font-size: 10px;
  line-height: 1.7;
}

.sitw-wt-property {
  display: grid;
  gap: 6px;
}

.sitw-wt-property > label {
  color: rgba(255, 255, 255, .48);
  font-size: 9px;
  font-weight: 850;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.sitw-wt-property-label {
  color: rgba(255, 255, 255, .48);
  font-size: 9px;
  font-weight: 850;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.sitw-wt-property.is-check {
  grid-template-columns: auto 1fr;
  align-items: center;
}

.sitw-wt-property.is-check input {
  width: auto;
  margin: 0;
}

.sitw-wt-property.is-check label {
  color: rgba(255, 255, 255, .72);
  font-size: 11px;
  font-weight: 700;
}

.sitw-wt-property input,
.sitw-wt-property textarea,
.sitw-wt-property select {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: 9px;
  outline: 0;
  background: rgba(255, 255, 255, .035);
  color: #fff;
  padding: 9px 10px;
  font: 500 12px Inter, sans-serif;
}

.sitw-wt-property textarea {
  min-height: 76px;
  resize: vertical;
}

.sitw-wt-repeat {
  display: grid;
  gap: 8px;
}

.sitw-wt-repeat-item {
  position: relative;
  display: grid;
  gap: 7px;
  padding: 10px;
  border: 1px solid rgba(255, 255, 255, .075);
  border-radius: 10px;
  background: rgba(255, 255, 255, .018);
}

.sitw-wt-repeat-head {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  color: rgba(255, 255, 255, .45);
  font-size: 9px;
  font-weight: 800;
}

.sitw-wt-repeat-actions {
  display: flex;
  gap: 4px;
}

.sitw-wt-repeat-head button,
.sitw-wt-add-item {
  border: 1px solid rgba(199, 155, 255, .2);
  border-radius: 8px;
  background: rgba(155, 48, 255, .08);
  color: #d9b8ef;
  padding: 6px 9px;
  font: 750 9px Inter, sans-serif;
  cursor: pointer;
}

.sitw-wt-repeat-head button:disabled,
.sitw-wt-add-item:disabled {
  opacity: .35;
  cursor: default;
}

@media (max-width: 640px) {
  .sitw-world-tool { margin: 18px 0; }
  .sitw-wt-contentbox .sitw-wt-shell,
  .sitw-wt-reveal .sitw-wt-shell,
  .sitw-wt-steps .sitw-wt-shell,
  .sitw-wt-flashcards .sitw-wt-shell,
  .sitw-wt-timeline .sitw-wt-shell { padding: 18px 16px; }
  .sitw-wt-event { grid-template-columns: 66px 16px 1fr; gap: 8px; }
  .sitw-wt-steps[data-orientation="vertical"] .sitw-wt-shell { display: block; }
  .sitw-wt-steps[data-orientation="vertical"] .sitw-wt-step-track { margin-bottom: 20px; }
  .sitw-wt-fallback-cards { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  .sitw-wt-card { transition: none; }
}