/* Shared lesson kit: checklist, lab stamps, asides, motion helpers, race lanes. */

/* Lesson progress: checklist, per-lab stamps, completion nudge. */
.lab-checklist { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: -8px 0 8px; }
.lab-checklist > strong { margin-right: 4px; font-family: var(--mono); font-size: 11px; color: var(--green-deep); }
.lc-item { display: inline-flex; align-items: center; gap: 7px; min-height: 30px; padding: 0 11px 0 8px; border: 1px solid var(--line-strong); border-radius: 99px; color: var(--muted); background: var(--surface); font: inherit; font-size: 11.5px; font-weight: 700; cursor: pointer; transition: border-color .15s, color .15s, background .25s; }
.lc-item:hover { color: var(--ink); border-color: var(--green); }
.lc-item i { display: grid; place-items: center; width: 16px; height: 16px; border-radius: 50%; border: 1.5px solid var(--line-strong); font-style: normal; font-size: 10px; transition: .25s; }
.lc-item.done { color: var(--green-deep); border-color: var(--green); background: var(--green-soft); }
.lc-item.done i { border-color: var(--green); background: var(--green); color: #fff; }
.lc-item.done i::before { content: "✓"; }
.lc-reset { margin-left: auto; padding: 4px 6px; border: 0; color: var(--muted); background: none; font: inherit; font-size: 11px; text-decoration: underline; cursor: pointer; }

.lab-side { display: flex; flex: 0 0 auto; flex-direction: column; align-items: flex-end; gap: 8px; }
.lab-stamp { display: none; padding: 5px 10px; border: 1.5px solid var(--green); border-radius: 99px; color: var(--green-deep); background: var(--lime); font-size: 11px; font-weight: 800; letter-spacing: .02em; transform: rotate(-3deg); }
.lab.is-done .lab-stamp { display: inline-block; }
@keyframes kitStamp { 0% { opacity: 0; transform: rotate(-3deg) scale(2.2); } 60% { opacity: 1; transform: rotate(-3deg) scale(.9); } 100% { transform: rotate(-3deg) scale(1); } }
@keyframes kitDing { 0% { box-shadow: var(--shadow), 0 0 0 0 rgba(200, 237, 118, .9); } 100% { box-shadow: var(--shadow), 0 0 0 18px rgba(200, 237, 118, 0); } }
.lab.ding { animation: kitDing .9s ease-out; }
.lab.ding .lab-stamp { animation: kitStamp .5s cubic-bezier(.2, .8, .2, 1.2); }
@keyframes kitNudge { 0%, 100% { box-shadow: 0 0 0 0 rgba(29, 111, 80, .45); } 50% { box-shadow: 0 0 0 7px rgba(29, 111, 80, 0); } }
.complete-button.nudge:not(.done) { border-color: var(--green); animation: kitNudge 1.6s ease-in-out infinite; }

/* Collapsible "Wait, what?" asides. */
.wonder { margin-top: 16px; border: 1px dashed var(--line-strong); border-left: 3px solid var(--lime); border-radius: var(--radius-sm); background: var(--surface-soft); }
.wonder summary { display: flex; align-items: baseline; gap: 10px; padding: 11px 14px; font-size: 13.5px; font-weight: 600; cursor: pointer; list-style: none; }
.wonder summary::-webkit-details-marker { display: none; }
.wonder summary::after { content: "+"; margin-left: auto; color: var(--green); font-family: var(--mono); font-size: 15px; transition: transform .2s; }
.wonder[open] summary::after { transform: rotate(45deg); }
.wonder summary > span { flex: 0 0 auto; font-size: 10px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; color: var(--green-deep); }
.wonder p { margin: 0; padding: 0 14px 13px; font-size: 13.5px; line-height: 1.55; }
.concept-card .wonder { margin-top: 14px; }
.concept-card .wonder summary { flex-wrap: wrap; row-gap: 2px; font-size: 12.5px; }
.concept-card .wonder p { font-size: 12.5px; color: var(--ink); }

@keyframes kitPing { 0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(200, 237, 118, 0.9); background: var(--lime); } 60% { transform: scale(1.18); box-shadow: 0 0 0 9px rgba(200, 237, 118, 0); } 100% { transform: scale(1); } }
.ping { animation: kitPing 0.7s ease-out; }
.control-hint { align-self: center; color: var(--muted); font-size: 12px; }
.race { display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 14px; margin-top: 18px; }
.lane { display: flex; flex-direction: column; gap: 10px; min-width: 0; padding: 14px; border: 1px solid var(--line); border-radius: 14px; background-color: #fbfcf9; background-image: radial-gradient(var(--line) .8px, transparent .8px); background-size: 17px 17px; }
.lane-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; font-size: 13px; }
.hops { display: inline-flex; gap: 5px; }
.hops i { width: 11px; height: 11px; border-radius: 50%; border: 1.5px solid var(--line-strong); background: var(--surface); transition: .2s; }
.hops i.on { border-color: var(--blue); background: var(--blue); }
.lane-flag { min-height: 20px; font-size: 12px; font-weight: 700; opacity: 0; transform: translateY(4px); transition: .3s; }
.lane-flag.show { opacity: 1; transform: none; }
.lane-flag.warn { color: var(--coral); }
.lane-flag.ok { color: var(--green); }

/* Shared controls: segmented toggles, 4-up metrics, concept-card minis. */
.metric-grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.segmented { display: inline-flex; padding: 3px; gap: 2px; border: 1px solid var(--line-strong); border-radius: 9px; background: var(--surface); }
.segmented button { min-height: 32px; padding: 0 12px; border: 0; border-radius: 6px; color: var(--muted); background: transparent; font: inherit; font-size: 12px; font-weight: 700; cursor: pointer; }
.segmented button:hover { color: var(--ink); }
.segmented button[aria-pressed="true"] { color: #fff; background: var(--green); }
.mini { display: flex; align-items: center; justify-content: center; gap: 8px; height: 74px; margin: -6px 0 14px; border-radius: 10px; background: var(--surface-soft); font-size: 11.5px; overflow: hidden; }

/* Motion helpers (LabKit.fly / burst / floater). */
.kit-flyer { position: fixed; z-index: 60; margin: 0; pointer-events: none; box-shadow: 0 14px 30px rgba(23, 33, 29, .22); }
.kit-spark { position: fixed; z-index: 61; width: 8px; height: 8px; border-radius: 2px; pointer-events: none; }
.kit-floater { position: fixed; z-index: 61; padding: 2px 7px; border-radius: 99px; color: #fff; background: var(--green); font-family: var(--mono); font-size: 11px; font-weight: 500; white-space: nowrap; pointer-events: none; }
.kit-floater.bad { background: var(--coral); }
.kit-floater.warn { background: var(--amber); }

@media (max-width: 680px) {
  .metric-grid.four { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .race { grid-template-columns: 1fr; }
  .lab-side { align-items: flex-start; }
}