/* Hand-built figures for lesson 1, The big picture. */

/* hero: one lap of the pipeline */
.bph { position: relative; display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 14px 18px; align-items: end; max-width: 980px; margin: 0 auto; padding: 18px 12px 8px; }
.bph-st { display: flex; flex-direction: column; align-items: center; gap: 10px; opacity: 0.38; transition: opacity 0.4s var(--ease), transform 0.4s var(--ease); }
.bph-st.on { opacity: 1; transform: translateY(-4px); }
.bph-st > span { font: 500 0.7rem/1 var(--f-mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3); white-space: nowrap; }
.bph-st.on > span { color: var(--gold); }
.bph-art { min-height: 84px; display: flex; align-items: center; justify-content: center; }
.bph-text { font: italic 400 1.15rem/1.2 var(--f-body); color: var(--ink); text-align: center; }
.bph-ids { flex-wrap: wrap; gap: 4px; justify-content: center; max-width: 150px; }
.bph-ids i { font: 500 0.8rem var(--f-mono); font-style: normal; color: var(--gold); padding: 3px 6px; border: 1px solid var(--gold-soft); border-radius: 6px; background: var(--gold-soft); }
.bph-vec { flex-direction: column; gap: 3px; }
.bph-vec b { display: flex; gap: 3px; }
.bph-vec i { width: 11px; height: 11px; border-radius: 2px; background: var(--accent); opacity: var(--a); }
.bph-blk { flex-direction: column; gap: 6px; }
.bph-blk i { font: 500 0.7rem var(--f-mono); font-style: normal; color: var(--ink-2); padding: 7px 14px; border-radius: var(--r-1); border: 1px solid var(--line-2); background: var(--surface); }
.bph-bars { gap: 6px; align-items: flex-end; }
.bph-bars i { width: 16px; height: calc(8px + var(--p) * 70px); border-radius: 3px 3px 0 0; background: var(--accent); }
.bph-next i { font: 500 0.85rem var(--f-mono); font-style: normal; color: var(--bg); background: var(--gold); padding: 8px 12px; border-radius: 999px; }
.bph-loop { grid-column: 1 / -1; margin: 6px 0 0; text-align: center; font: 500 0.72rem var(--f-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-3); border-top: 1px dashed var(--line-2); padding-top: 10px; }
.bph-loop::before { content: "↺ "; color: var(--gold); }
@media (max-width: 700px) {
  .bph { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px 10px; }
  .bph-art { min-height: 70px; }
  .bph-text { font-size: 1rem; }
  .bph-ids { max-width: 112px; gap: 3px; }
  .bph-ids i { font-size: 0.68rem; padding: 2px 4px; }
}

/* 1: the coat check */
.cc-in { display: flex; flex-direction: column; gap: 6px; font-size: 0.8rem; color: var(--ink-3); }
.cc-in input { font: 1.05rem var(--f-mono); color: var(--ink); background: var(--bg-2); border: 1px solid var(--line-2); border-radius: var(--r-1); padding: 10px 12px; width: 100%; box-sizing: border-box; }
.cc-in input:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.cc-try { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 12px 0 4px; font-size: 0.85rem; }
.fig ol.cc-tickets { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0 4px; padding: 0; min-height: 58px; }
.cc-tickets li { display: flex; flex-direction: column; align-items: center; gap: 4px; padding: 7px 10px 6px; border-radius: var(--r-1); background: var(--accent-soft); border: 1px solid var(--accent); }
.cc-tickets li.byte { background: transparent; border: 1px dashed var(--ink-3); }
.cc-piece { font: 500 1rem var(--f-mono); color: var(--ink); white-space: pre; }
.cc-id { font: 500 0.75rem var(--f-mono); color: var(--gold); }
.cc-key { display: flex; flex-wrap: wrap; gap: 6px 18px; font-size: 0.78rem; color: var(--ink-3); margin: 10px 0 0; }
.cc-key span { display: inline-flex; align-items: center; gap: 6px; }
.cc-sw { display: inline-block; width: 14px; height: 14px; border-radius: 4px; background: var(--accent-soft); border: 1px solid var(--accent); }
.cc-sw.byte { background: transparent; border: 1px dashed var(--ink-3); }
.cc-read code { font-size: 0.8rem; overflow-wrap: anywhere; }

/* 2: the lookup and the add */
.la-ctl { margin: 0 0 16px; }
.la-ctl .btn:disabled { opacity: 0.4; cursor: default; }
.la { display: grid; grid-template-columns: minmax(0, 1.25fr) auto minmax(0, 1fr) auto minmax(0, 1fr); gap: 8px; align-items: center; }
.la-g .kicker { margin: 0 0 8px; min-height: 2.4em; }
.la-r { display: flex; flex-direction: column; align-items: stretch; gap: 3px; width: 100%; margin: 0 0 6px; padding: 5px 6px; border-radius: var(--r-1); border: 1px solid transparent; background: transparent; color: inherit; cursor: pointer; text-align: left; }
.la-r.on { border-color: var(--gold); background: var(--gold-soft); }
.la-r:focus-visible { outline: 2px solid var(--accent); }
.la-l { font: 500 0.78rem var(--f-mono); color: var(--ink-2); white-space: nowrap; }
.la-l em { font-style: normal; color: var(--ink-3); margin-left: 4px; }
.la-v { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 3px; }
.la-v i { font: 500 0.8rem/1 var(--f-mono); font-style: normal; text-align: center; padding: 6px 0; border-radius: 5px; color: var(--ink);
  background: color-mix(in srgb, var(--c1) calc(min(max(var(--v), 0), 0.6) * 100%), color-mix(in srgb, var(--c2) calc(min(max(var(--v) * -1, 0), 0.6) * 100%), var(--surface-2))); }
.la-op { font: 400 1.8rem var(--f-display); color: var(--ink-3); padding-top: 1.6em; }
.la.nopos .la-g:nth-of-type(2) .la-v i { color: var(--ink-3); }
@media (max-width: 720px) {
  .la { grid-template-columns: minmax(0, 1fr); }
  .la-g .kicker { min-height: 0; }
  .la-op { padding: 0; text-align: center; line-height: 1; }
}

/* 3: the blocks */
.fig ol.bm-steps { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; padding: 0; margin: 0 0 16px; }
.bm-steps button { font: 500 0.78rem var(--f-ui); color: var(--ink-3); background: transparent; border: 1px solid var(--line-2); border-radius: 999px; padding: 6px 12px; cursor: pointer; }
.bm-steps button.done { color: var(--ink-2); border-color: var(--ink-3); }
.bm-steps button[aria-current="step"] { color: var(--bg); background: var(--ink); border-color: var(--ink); }
.bm { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 18px; align-items: center; }
.bm-r { display: grid; grid-template-columns: 6.5em minmax(0, 1fr); align-items: center; gap: 10px; width: 100%; margin: 0 0 6px; padding: 4px 6px; border: 1px solid transparent; border-radius: var(--r-1); background: transparent; color: inherit; cursor: pointer; text-align: left; }
.bm-r.on { border-color: var(--gold); background: var(--gold-soft); }
.bm-r:focus-visible { outline: 2px solid var(--accent); }
.bm-l { font: 500 0.85rem var(--f-mono); color: var(--ink); white-space: nowrap; }
.bm-bar { display: flex; height: 30px; border-radius: 6px; overflow: hidden; background: var(--surface-2); }
.bm-bar i { flex: var(--w) 0 0; min-width: 0; background: var(--c); display: flex; align-items: center; justify-content: center; font: 600 0.72rem var(--f-mono); font-style: normal; color: var(--bg); transition: flex-grow 0.6s var(--ease); overflow: hidden; }
.bm-rows.desk .bm-bar { box-shadow: 0 0 0 2px var(--accent-soft); }
.bm-shape { display: flex; flex-direction: column; align-items: center; gap: 4px; margin: 0; padding: 12px 16px; border: 1px solid var(--line-2); border-radius: var(--r-2); }
.bm-shape span { font: 500 0.7rem var(--f-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-3); }
.bm-shape b { font: 400 1.7rem var(--f-display); color: var(--gold); white-space: nowrap; }
.bm-say { font-size: 0.9rem; color: var(--ink-2); margin: 12px 0 0; min-height: 2.8em; }
.bm-say b { color: var(--ink); }
@media (prefers-reduced-motion: reduce) { .bm-bar i { transition: none; } }
@media (max-width: 560px) {
  .bm { grid-template-columns: minmax(0, 1fr); }
  .bm-shape { flex-direction: row; justify-content: center; gap: 10px; padding: 8px; }
  .bm-shape b { font-size: 1.3rem; }
  .bm-r { grid-template-columns: 5.6em minmax(0, 1fr); }
}

/* 4: temperature */
.td { display: grid; gap: 10px; }
.td-row { display: grid; grid-template-columns: 7.5em minmax(0, 1fr) 3.6em 5.2em; gap: 12px; align-items: center; }
.td-name { font: 0.85rem var(--f-ui); color: var(--ink-3); white-space: nowrap; }
.td-name b { font: 600 1rem var(--f-mono); color: var(--ink); margin-right: 6px; }
.td-track { height: 22px; border-radius: 6px; background: var(--surface-2); overflow: hidden; }
.td-track i { display: block; height: 100%; width: calc(var(--p, 0) * 100%); background: var(--c); transition: width 0.2s var(--ease); }
.td-p { font: 600 0.95rem var(--f-mono); color: var(--ink); text-align: right; }
.td-n { font: 0.8rem var(--f-mono); color: var(--ink-3); white-space: nowrap; }
.td-work { overflow-wrap: anywhere; }
.td-draws { display: flex; flex-wrap: wrap; align-items: center; gap: 3px; min-height: 1.6em; font-size: 0.85rem; margin: 12px 0 0; }
.td-draws .muted { margin-right: 6px; }
.td-draws i { display: inline-grid; place-items: center; width: 20px; height: 22px; border-radius: 4px; background: var(--c); color: var(--bg); font: 600 0.72rem var(--f-mono); font-style: normal; }
@media (max-width: 560px) {
  .td-row { grid-template-columns: 5.6em minmax(0, 1fr) 3.3em; row-gap: 2px; }
  .td-name { font-size: 0.72rem; }
  .td-n { grid-column: 2 / -1; font-size: 0.72rem; }
  .td-n:empty { display: none; }
}
@media (prefers-reduced-motion: reduce) { .td-track i { transition: none; } }

/* 5: the loop */
.ll-text { display: flex; flex-wrap: wrap; gap: 3px; min-height: 2em; margin: 0 0 14px; font: 500 0.9rem var(--f-mono); }
.ll-text span { padding: 3px 6px; border-radius: 5px; background: var(--surface-2); color: var(--ink-2); white-space: pre; }
.ll-text span.pr { background: var(--accent-soft); color: var(--ink); }
.ll-text span.nw { background: var(--gold); color: var(--bg); }
.ll { display: grid; grid-template-columns: minmax(0, 1fr) 13em; gap: 22px; align-items: start; }
.ll-grid { display: grid; gap: 3px; align-items: center; }
.ll-rl { font: 0.68rem var(--f-mono); color: var(--ink-3); white-space: nowrap; opacity: 0.45; }
.ll-rl.on { opacity: 1; color: var(--ink-2); }
.ll-cell { height: 14px; border-radius: 3px; background: var(--surface-2); }
.ll-cell.read { background: var(--accent); }
.ll-cell.kept { background: var(--accent-soft); box-shadow: inset 0 0 0 1px var(--accent); }
.ll-c { padding: 10px 12px; border-radius: var(--r-1); border: 1px solid var(--line); margin-bottom: 8px; opacity: 0.6; }
.ll-c.hi { opacity: 1; border-color: var(--gold); }
.ll-c .n { display: block; font: 400 2rem/1 var(--f-display); color: var(--ink); }
.ll-c .l { font-size: 0.78rem; color: var(--ink-3); }
.ll-key { display: flex; flex-direction: column; gap: 6px; font-size: 0.75rem; color: var(--ink-3); margin: 10px 0 0; }
.ll-key span { display: inline-flex; align-items: center; gap: 8px; }
.ll-key i { width: 14px; height: 14px; border-radius: 3px; flex: none; }
.ll-key i.read { background: var(--accent); }
.ll-key i.kept { background: var(--accent-soft); box-shadow: inset 0 0 0 1px var(--accent); }
.controls .btn:disabled { opacity: 0.4; cursor: default; }
.ll-long { margin-top: 20px; padding-top: 14px; border-top: 1px solid var(--line); }
.ll-long .kicker { margin: 0; }
.ll-long .controls { margin-top: 8px; }
@media (max-width: 700px) {
  .ll { grid-template-columns: minmax(0, 1fr); }
  .ll-side { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
  .ll-c { margin: 0; }
  .ll-c .n { font-size: 1.6rem; }
  .ll-key { grid-column: 1 / -1; flex-direction: row; flex-wrap: wrap; gap: 6px 16px; margin: 0; }
  .ll-cell { height: 11px; }
  .ll-grid { gap: 2px; }
}

/* 6: the loss */
.sm-pre { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 14px; }
.sm-pre .btn[aria-pressed="true"] { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.sm-sent { display: flex; flex-wrap: wrap; align-items: center; gap: 2px; font: 500 0.9rem var(--f-mono); margin: 0 0 12px; }
.sm-sent .muted { font: 0.8rem var(--f-ui); margin-right: 6px; }
.sm-sent span:not(.muted) { padding: 2px 4px; border-radius: 4px; background: var(--surface-2); white-space: pre; }
.sm-guesses { display: flex; flex-wrap: wrap; gap: 6px; margin: 0 0 16px; }
.sm-chip { display: flex; flex-direction: column; align-items: center; gap: 5px; min-width: 52px; padding: 6px 6px 5px; border-radius: var(--r-1); border: 1px solid var(--line-2); background: transparent; color: inherit; cursor: pointer; }
.sm-chip.on { border-color: var(--gold); background: var(--gold-soft); }
.sm-chip:focus-visible { outline: 2px solid var(--accent); }
.sm-bar { width: 16px; height: 44px; border-radius: 3px; background: var(--surface-2); display: flex; align-items: flex-end; overflow: hidden; }
.sm-bar i { display: block; width: 100%; height: calc(var(--s) * 100%); background: var(--c2); }
.sm-piece { font: 500 0.78rem var(--f-mono); color: var(--ink); white-space: pre; }
.sm { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 22px; align-items: start; }
.sm-plot svg { width: 100%; height: auto; display: block; touch-action: none; }
.sm-grid { stroke: var(--line); }
.sm-tick { font: 11px var(--f-mono); fill: var(--ink-3); }
.sm-lab { font: 12px var(--f-ui); fill: var(--ink-2); }
.sm-lab.uni { fill: var(--ink-3); }
.sm-uni { stroke: var(--ink-3); stroke-dasharray: 4 4; }
.sm-curve { fill: none; stroke: var(--c2); stroke-width: 2.5; }
.sm-dot { fill: var(--ink-2); }
.sm-handle { fill: var(--gold); stroke: var(--bg); stroke-width: 2; cursor: grab; }
.sm-handle:focus-visible { outline: none; stroke: var(--ink); stroke-width: 3; }
.sm-now { font-size: 0.88rem; color: var(--ink-2); margin: 0 0 12px; overflow-wrap: anywhere; }
.sm-now b { color: var(--ink); }
.sm-big { margin-bottom: 10px; }
.sm-big .n { display: block; font: 400 2.2rem/1 var(--f-display); color: var(--gold); }
.sm-big .l { font-size: 0.8rem; color: var(--ink-3); }
.sm-ref { font-size: 0.8rem; margin: 6px 0 0; }
@media (max-width: 760px) { .sm { grid-template-columns: minmax(0, 1fr); } }