/* Turtle Range and Lessonsmith blocks. Approved AI Labs style (see CLAUDE.md):
   Lessonsmith greens and gold, roomy cards, big text, accessibility first. */
.tr-main { padding-block: 24px 80px; max-width: 1680px; display: grid; gap: 18px; }
.panel.tr-mission, .tr-work > .panel { border-radius: 24px; padding: 20px; box-shadow: 0 8px 26px rgb(14 77 62 / .07); min-width: 0; }
.lab-link { border: 1px solid rgb(255 255 255 / .35); background: rgb(255 255 255 / .12); color: #FFFFFF; text-decoration: none; padding: 6px 12px; font-size: .84rem; line-height: 1.3; display: inline-flex; align-items: center; gap: 4px; }
.lab-link:hover { background: rgb(255 255 255 / .22); color: #FFFFFF; }

/* The mission */
.tr-mission-head { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 18px; align-items: center; }
.tr-icon { width: 84px; height: 84px; border-radius: 22px; background: var(--soft); display: grid; place-items: center; font-size: 2.8rem; border: 3px solid var(--accent); }
.tr-kicker { margin: 0; font-family: var(--font-mono); font-size: .82rem; letter-spacing: .08em; text-transform: uppercase; color: var(--accent); font-weight: 600; }
.tr-mission h1 { font-family: var(--font-display); font-size: clamp(1.7rem, 3vw, 2.3rem); margin: 2px 0 4px; line-height: 1.1; }
.tr-ask { margin: 0; font-size: 1.25rem; font-weight: 600; }
.tr-mode { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; background: var(--bg); border-radius: 18px; padding: 6px; }
.tr-mode button { min-height: 52px; min-width: 120px; font-size: 1.08rem; border: 0; border-radius: 14px; background: transparent; }
.tr-mode button[aria-pressed="true"] { background: var(--deep); color: #FFFFFF; }
.tr-mission .lab-help { margin: 14px 0 0; }
.tr-mission .lab-help ol { font-size: 1.05rem; }
.tr-path { list-style: none; padding: 0; margin: 16px 0 0; display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.tr-stage-name { font-weight: 700; font-size: .9rem; color: var(--deep); background: var(--soft); border-radius: 999px; padding: 6px 12px; margin-left: 6px; }
.tr-stage-name:first-child { margin-left: 0; }
.tr-dot { width: 46px; height: 46px; padding: 0; border-radius: 50%; display: grid; place-items: center; font-weight: 700; font-size: 1.05rem; border: 3px solid var(--accent); background: var(--surface); color: var(--deep); }
.tr-dot.done { background: var(--accent); color: var(--accent-ink); }
.tr-dot.here { background: var(--chalk); color: var(--chalk-ink); border-color: var(--deep); box-shadow: 0 0 0 4px #FFF3C4; }
.tr-dot.locked { border-color: var(--line); background: var(--bg); font-size: .9rem; opacity: 1; }
.tr-dot.free { border-style: dashed; }

/* Palette | program | turtle */
.tr-work { display: grid; grid-template-columns: minmax(250px, .85fr) minmax(0, 1.25fr) minmax(0, 1.35fr); gap: 18px; align-items: start; }
.tr-work.python { grid-template-columns: minmax(0, 1.3fr) minmax(0, 1.2fr); }
.tr-work h2 { display: flex; align-items: center; gap: 10px; font-family: var(--font-display); font-size: 1.3rem; margin: 0 0 14px; }
.tr-work .labs-num { width: 36px; height: 36px; font-size: 1.05rem; }
.tr-script-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 10px; flex-wrap: wrap; }
.tr-script-head h2 { margin-bottom: 14px; }
.tr-pyview { margin-top: 16px; }
.tr-pyview h3 { font-size: 1rem; margin: 0 0 6px; }
.tr-py { background: #0B2A22; color: #E7F6EF; border-radius: 16px; padding: 12px 0; margin: 0; font-family: var(--font-mono); font-size: 15px; line-height: 1.7; overflow-x: auto; white-space: pre; }
.tr-py span[data-l] { display: block; padding: 0 16px; border-left: 5px solid transparent; }
.tr-py span.on { background: rgb(244 200 66 / .25); border-left-color: var(--chalk); }
#canvas { display: block; width: 100%; height: auto; aspect-ratio: 1; border-radius: 20px; border: 3px solid var(--line); background: #FFFFFF; }
.tr-run { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-top: 14px; }
.tr-run #runBtn, .tr-run #stopBtn { min-width: 140px; min-height: 54px; font-size: 1.15rem; }
.tr-run .small { min-height: 44px; }
.tr-result { margin-top: 14px; background: var(--bg); border-left: 6px solid var(--accent); border-radius: 0 16px 16px 0; padding: 12px 16px; font-size: 1.08rem; }
.tr-result p { margin: 4px 0; }
.tr-result.win { background: var(--soft); border-left-color: var(--mint); }
.tr-result.warn { background: #FFF8DC; border-left-color: var(--chalk); }
.tr-result .lab-actions { margin-top: 10px; }

/* Lessonsmith blocks: a colour AND a shape for each kind of block */
.tb-palette { display: grid; gap: 14px; }
.tb-group { display: grid; gap: 8px; }
.tb-group-name { margin: 0; font-size: .95rem; color: var(--muted); }
.tb-block { --tb-c: #0E4D3E; --tb-ink: #FFFFFF; position: relative; display: block; width: 100%; text-align: left; background: var(--tb-c); color: var(--tb-ink); border: 0; border-radius: 12px; padding: 0; font-weight: 700; font-size: 1rem; line-height: 1.3; box-shadow: 0 3px 0 rgb(0 0 0 / .18); }
.tb-block.tb-move { --tb-c: #0E4D3E; --tb-ink: #FFFFFF; }
.tb-block.tb-turn { --tb-c: #137A5E; --tb-ink: #FFFFFF; }
.tb-block.tb-pen { --tb-c: #F4C842; --tb-ink: #2B2200; }
.tb-block.tb-control { --tb-c: #2DBE8F; --tb-ink: #08201A; }
/* The little tab underneath, so blocks look like they click together. */
.tb-block::after { content: ""; position: absolute; left: 22px; bottom: -6px; width: 24px; height: 7px; border-radius: 0 0 7px 7px; background: var(--tb-c); z-index: 1; }
button.tb-block { padding: 11px 14px; min-height: 48px; display: flex; gap: 8px; align-items: center; }
button.tb-block:hover:not(:disabled) { filter: brightness(1.08); border: 0; }
.tb-head { display: flex; flex-wrap: wrap; gap: 6px 8px; align-items: center; padding: 8px 8px 8px 10px; min-height: 52px; }
.tb-words { display: inline-flex; flex-wrap: wrap; gap: 6px; align-items: center; flex: 1; min-width: 0; }
.tb-shape { font-size: .85rem; opacity: .85; }
.tb-grip { cursor: grab; opacity: .6; font-size: 1.1rem; }
.tb-slot { display: inline-block; background: #FFFFFF; color: #10211C; border: 2px solid rgb(0 0 0 / .15); border-radius: 999px; padding: 4px 10px; font-family: var(--font-mono); font-weight: 600; font-size: 1rem; min-width: 2.6em; text-align: center; }
input.tb-slot, select.tb-slot { width: auto; min-height: 38px; color: #10211C; background: #FFFFFF; border: 2px solid rgb(0 0 0 / .15); border-radius: 999px; padding: 4px 10px; font-weight: 600; line-height: 1.2; }
input.tb-slot.bad { border: 3px solid #B3261E; background: #FFECEA; }
select.tb-slot { text-align: left; padding-right: 6px; font-family: var(--font-body); }
.tb-swatch { width: 20px; height: 20px; border-radius: 50%; background: var(--sw); border: 2px solid #FFFFFF; box-shadow: 0 0 0 1px rgb(0 0 0 / .3); }
.tb-counter { font-size: .8rem; font-family: var(--font-mono); background: rgb(255 255 255 / .55); color: #08201A; border-radius: 999px; padding: 2px 8px; }
.tb-del { margin-left: auto; width: 40px; height: 40px; min-height: 40px; padding: 0; border-radius: 50%; border: 0; background: rgb(255 255 255 / .2); color: inherit; font-size: 1rem; display: grid; place-items: center; }
.tb-pen .tb-del, .tb-control .tb-del { background: rgb(0 0 0 / .1); }
.tb-del:hover:not(:disabled) { background: #B3261E; color: #FFFFFF; border: 0; }
/* C-shaped blocks hold other blocks */
.tb-c > .tb-mouth { margin-left: 22px; background: var(--bg); border-radius: 10px 0 0 10px; padding: 4px 6px 4px 8px; min-height: 52px; }
.tb-c > .tb-foot { height: 16px; }
.tb-script { min-height: 220px; background: var(--bg); border: 2px dashed var(--line); border-radius: 18px; padding: 12px; }
.tb-script .tb-block { margin: 0; }
.tb-block[data-id]:focus-visible { outline: 4px solid var(--chalk); outline-offset: 2px; }
.tb-block.on { outline: 5px solid var(--chalk); outline-offset: 2px; box-shadow: 0 0 0 9px rgb(244 200 66 / .35); }
.tb-block.on:has(.tb-block.on) { outline: 0; box-shadow: 0 3px 0 rgb(0 0 0 / .18); }
.tb-block.err { outline: 5px solid #B3261E; outline-offset: 2px; }
.tb-start { margin: 8px 4px; color: var(--muted); font-weight: 600; font-size: 1.05rem; }
/* Where the next block goes */
.tb-gap { display: block; width: 100%; height: 12px; min-height: 0; padding: 0; margin: 0; border: 0; background: transparent; border-radius: 8px; }
.tb-gap:hover:not(:disabled) { background: rgb(244 200 66 / .3); border: 0; }
.tb-gap.here, .tb-gap.tb-empty { height: auto; min-height: 44px; margin: 4px 0; padding: 8px 12px; text-align: left; font-weight: 700; font-size: .95rem; }
.tb-gap.here { border: 3px dashed var(--chalk); background: #FFF8DC; color: #5A4500; }
.tb-gap.tb-empty:not(.here) { border: 2px dashed var(--line); background: var(--surface); color: var(--muted); font-weight: 600; }
.tb-script.dragging .tb-gap { height: 24px; background: rgb(244 200 66 / .15); }
.tb-script.dragging .tb-gap.over { background: var(--chalk); }

body.a11y-calm .tb-block.on { box-shadow: none; }

@media (max-width: 1180px) {
  .tr-work { grid-template-columns: minmax(240px, .8fr) minmax(0, 1.3fr); }
  .tr-work > .tr-stage { grid-column: 1 / -1; }
  .tr-work.python { grid-template-columns: minmax(0, 1fr); }
  .tr-stage canvas { max-width: 620px; margin-inline: auto; }
}
@media (max-width: 760px) {
  .tr-main { padding-block: 14px 60px; }
  .tr-work { grid-template-columns: minmax(0, 1fr); }
  .tr-mission-head { grid-template-columns: auto minmax(0, 1fr); }
  .tr-mode { grid-column: 1 / -1; }
  .tr-icon { width: 64px; height: 64px; font-size: 2.1rem; }
  .tr-ask { font-size: 1.12rem; }
  .tb-palette { max-height: 300px; overflow-y: auto; padding-right: 4px; }
  .tr-stage-name { display: none; }
  .lab-link { font-size: .82rem; }
}

/* Python Playground: code | what happens */
.pp-work { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: 18px; align-items: start; }
.pp-work > .panel { border-radius: 24px; padding: 20px; box-shadow: 0 8px 26px rgb(14 77 62 / .07); min-width: 0; }
.pp-work h2 { display: flex; align-items: center; gap: 10px; font-family: var(--font-display); font-size: 1.3rem; margin: 0 0 14px; }
.pp-work .labs-num { width: 36px; height: 36px; font-size: 1.05rem; }
.pp-examples { display: flex; align-items: center; gap: 8px; font-weight: 600; }
.pp-examples select { width: auto; min-height: 44px; }
.pp-out #canvas { aspect-ratio: auto; margin-bottom: 6px; }
.pp-out .cd-mem-title:first-of-type { margin-top: 6px; }
@media (max-width: 960px) { .pp-work { grid-template-columns: minmax(0, 1fr); } }
@media (max-width: 600px) { .pp-examples { width: 100%; } .pp-examples select { flex: 1; } }