/* Hand-built figures for lesson 6, Positional information. */

/* shared: two columns that stack on a phone, planes, clock faces and hands, small text */
.pp-two { display: grid; gap: 22px; grid-template-columns: 1fr; align-items: start; }
@media (min-width: 760px) { .pp-two { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); } }
.pp-grid { stroke: var(--line-2); }
.pp-tick { font: 12px var(--f-mono); fill: var(--ink-3); }
.pp-tick.strong { fill: var(--ink-2); font-weight: 600; }
.pp-hand { stroke-width: 3; stroke-linecap: round; }
.pp-hand.wide { stroke-width: 4.5; }
.pp-hand.a { stroke: var(--gold); } .pp-hand.b { stroke: var(--accent); } .pp-hand.bad { stroke: var(--bad); }
.pp-work { font: 0.9rem/1.6 var(--f-mono); color: var(--ink-2); margin: 0 0 6px; overflow-wrap: anywhere; }
.pp-work b { color: var(--ink); }
.pp-table { border-collapse: collapse; width: 100%; font: 0.85rem var(--f-ui); margin-bottom: 12px; }
.pp-table th { text-align: left; font: 500 0.66rem var(--f-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-3); padding: 5px 6px; border-bottom: 1px solid var(--line-2); }
.pp-table td { padding: 6px; border-bottom: 1px solid var(--line); color: var(--ink-2); }
.pp-table td.num { font-family: var(--f-mono); font-size: 0.82rem; color: var(--ink); white-space: nowrap; }
.pp-table td.num i { font-style: normal; font-family: var(--f-ui); font-size: 0.75rem; }
.seg.pp-wrap { flex-wrap: wrap; border-radius: 18px; max-width: 100%; }
.seg.pp-wrap button { height: auto; min-height: 28px; padding: 4px 12px; white-space: normal; text-align: left; line-height: 1.3; }
.bad { color: var(--bad); } .good { color: var(--good); }
.pp-legend { font-size: 0.78rem; line-height: 1.5; color: var(--ink-3); text-align: center; margin: 6px 0 0; }
.pp-legend .key { display: inline-block; width: 12px; height: 12px; border-radius: 3px; vertical-align: -1px; margin: 0 5px 0 10px; }
.pp-legend .key:first-child { margin-left: 0; }
.key.seen { background: color-mix(in oklab, var(--ink-3) 45%, transparent); border: 1px solid var(--ink-3); }
.key.new { background: color-mix(in oklab, var(--bad) 30%, transparent); border: 1px solid var(--bad); }
.key.a { background: var(--gold); } .key.b { background: var(--accent); }
/* word colours: dog, bites, man */
.w0 { --wc: var(--c1); } .w1 { --wc: var(--c3); } .w2 { --wc: var(--c2); }
.sw { display: inline-block; width: 11px; height: 11px; border-radius: 3px; margin-right: 7px; vertical-align: -1px; background: var(--wc); }

/* hero */
.hp { width: 100%; height: auto; display: block; margin: 0 auto; max-width: 860px; }
.hp-tile { fill: var(--surface); stroke: var(--line-2); stroke-width: 1.5; }
.hp-tile.moved { stroke: var(--gold); }
.hp-word { font: 400 28px var(--f-display); fill: var(--ink); }
.hp-words { opacity: 0; transition: opacity 0.6s var(--ease); }
.hp-words.in { opacity: 1; }
.hp-link { stroke: var(--line-2); stroke-dasharray: 3 4; }
.hp-face { fill: var(--surface); stroke: var(--line-2); stroke-width: 1.5; }
.hp-fast { stroke: var(--accent); stroke-width: 3; stroke-linecap: round; }
.hp-mid { stroke: var(--gold); stroke-width: 3; stroke-linecap: round; }
.hp-slow { stroke: var(--ink-2); stroke-width: 3.5; stroke-linecap: round; }
.hp-pin { fill: var(--ink); }
.hp-seat { font: 17px var(--f-mono); fill: var(--ink-3); }
@media (max-width: 600px) { .hp-seat { font-size: 22px; } }

/* Level 1: the options map */
.lo-ask .kicker { margin-bottom: 8px; }
.lo-sits { gap: 4px; padding: 4px; }
.lo-sits button { font-size: 0.82rem; }
.lo-map { display: grid; gap: 16px; margin-top: 22px; padding-top: 16px; border-top: 1px solid var(--line); }
.lo-gh { font: 500 0.7rem var(--f-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-3); margin: 0 0 8px; }
.lo-cards { list-style: none; margin: 0; padding: 0 !important; display: grid; gap: 8px; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); }
.lo-card { margin: 0 !important; position: relative; display: flex; flex-direction: column; gap: 3px; padding: 12px 14px 30px; border-radius: var(--r-1); background: var(--surface-2); border: 1px solid var(--line); transition: opacity 0.25s, border-color 0.25s, background 0.25s; }
.lo-name { font: 600 0.9rem/1.3 var(--f-ui); color: var(--ink); }
.lo-ex { font-size: 0.78rem; color: var(--ink-3); }
.lo-does { font-size: 0.8rem; line-height: 1.4; color: var(--ink-2); margin-top: 4px; }
.lo-pick { position: absolute; left: 14px; bottom: 9px; font: 600 0.68rem var(--f-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--good); opacity: 0; transition: opacity 0.25s; }
.lo-card.on { border-color: var(--good); background: color-mix(in oklab, var(--good) 10%, var(--surface-2)); }
.lo-card.on .lo-pick { opacity: 1; }
.lo-card.dim { opacity: 0.45; }
@media (max-width: 600px) {
  .lo-cards { grid-template-columns: 1fr 1fr; gap: 6px; }
  .lo-card { padding: 10px 10px 26px; }
  .lo-name { font-size: 0.82rem; }
  .lo-does { display: none; }
  .lo-pick { left: 10px; font-size: 0.62rem; }
}
.lo-verdict { display: grid; gap: 10px 22px; grid-template-columns: 1fr; margin-top: 18px; padding: 16px 18px; border-radius: var(--r-2); border: 1px solid var(--line-2); background: var(--bg-2); min-height: 9rem; }
@media (min-width: 760px) { .lo-verdict { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.lo-verdict p { margin: 0; font-size: 0.88rem; line-height: 1.5; color: var(--ink-2); }
.lo-verdict .lo-h { font: 600 0.7rem var(--f-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--good); margin-bottom: 4px; }
.lo-verdict .watch .lo-h { color: var(--bad); }
.lo-verdict a { color: var(--accent-ink); }
.lo-always { font-size: 0.85rem; color: var(--ink-2); margin: 12px 0 0; }
.lo-always b { color: var(--ink); }

/* the problem: a bag of tiles */
.bt-rack { display: flex; gap: 10px; flex-wrap: wrap; }
.bt-tile { display: flex; flex-direction: column; align-items: center; gap: 2px; min-width: 88px; padding: 10px 14px 8px; border-radius: 10px; cursor: pointer; background: var(--surface-2); border: 1px solid var(--line-2); border-bottom: 4px solid var(--wc); color: var(--ink); transition: transform 0.2s var(--ease), border-color 0.2s; }
.bt-tile span { font: 400 1.5rem/1 var(--f-display); }
.bt-tile i { font: 0.7rem var(--f-mono); font-style: normal; color: var(--ink-3); }
.bt-tile.on { border-color: var(--gold); transform: translateY(-3px); }
.bt-ctl { margin: 12px 0 16px; }
.bt-plane, .ml-plane { width: 100%; max-width: 380px; margin: 0 auto; display: block; }
.bt-move { stroke: var(--ink-3); stroke-dasharray: 3 3; }
.bt-in { fill: var(--wc); opacity: 0.55; }
.bt-out { fill: var(--wc); stroke: var(--bg); stroke-width: 2; }
.bt-pool { fill: var(--gold); }
.bt-lbl { font: 600 13px var(--f-ui); fill: var(--ink); }
.bt-lbl.strong { fill: var(--gold); }

/* 1: a clock with many hands */
.mh-ctl { display: flex; flex-wrap: wrap; gap: 10px 24px; align-items: center; font-size: 0.85rem; margin-bottom: 14px; }
.mh-ctl .controls { margin-top: 0; }
.mh-d { display: inline-flex; gap: 8px; align-items: center; }
.mh-clocks { display: flex; flex-wrap: wrap; gap: 6px 10px; justify-content: center; }
.mh-clock { width: 96px; display: flex; flex-direction: column; align-items: center; }
.mh-clock svg { width: 90px; height: 90px; display: block; }
.mh-cap { font: 0.72rem/1.3 var(--f-mono); color: var(--ink-3); text-align: center; }
.mh-strips { display: grid; gap: 6px; margin-top: 14px; }
.mh-strip { display: grid; grid-template-columns: 72px 1fr; gap: 10px; align-items: center; }
.mh-who { font: 0.78rem var(--f-mono); color: var(--ink-2); text-align: right; }
.mh-strip.a .mh-who { color: var(--gold); } .mh-strip.b .mh-who { color: var(--accent-ink); }
.mh-cells { display: grid; grid-template-columns: repeat(var(--n), minmax(0, 1fr)); gap: 2px; }
.mh-cells i { height: 30px; border-radius: 4px; display: grid; place-items: center; font: 0.72rem var(--f-mono); font-style: normal; color: var(--ink);
  background: color-mix(in oklab, var(--accent) calc(max(var(--v), 0) * 70%), color-mix(in oklab, var(--gold) calc(max(-1 * var(--v), 0) * 70%), var(--surface-2))); }
.mh-read { font-size: 0.85rem; color: var(--ink-2); margin: 12px 0 0; font-variant-numeric: tabular-nums; }
.mh-read b { color: var(--ink); }

/* 2: learned positions */
.st-ctl { display: flex; flex-wrap: wrap; gap: 10px 24px; align-items: center; font-size: 0.85rem; margin-bottom: 16px; }
.st-then { display: inline-flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.st-strips { display: grid; gap: 8px; }
.st-strip { display: grid; grid-template-columns: 76px 1fr; gap: 4px 10px; align-items: center; }
.st-lbl { font: 0.75rem var(--f-mono); color: var(--ink-3); text-align: right; }
.st-bar { display: flex; height: 26px; }
.st-table { display: block; width: 50%; flex: none; height: 100%; border-radius: 6px 0 0 6px; background: var(--surface-2); box-shadow: inset 0 0 0 1px var(--line-2); overflow: hidden; }
.st-fill { display: block; height: 100%; background: repeating-linear-gradient(90deg, var(--accent) 0 3px, color-mix(in oklab, var(--accent) 70%, var(--surface-2)) 3px 4px); }
.st-over { display: block; height: 100%; border-radius: 0 6px 6px 0; background: repeating-linear-gradient(135deg, var(--bad) 0 5px, color-mix(in oklab, var(--bad) 30%, transparent) 5px 10px); }
.st-n { grid-column: 2; font: 0.75rem var(--f-mono); color: var(--ink-3); }
.st-read { font-size: 0.9rem; color: var(--ink-2); margin: 12px 0 4px; min-height: 2.6em; }
.st-read b, .st-count b { color: var(--ink); } .st-read b.bad { color: var(--bad); }
.st-count { font-size: 0.85rem; color: var(--ink-3); margin: 0; }

/* 3: RoPE */
.rt-plane { width: 100%; max-width: 320px; margin: 0 auto; display: block; }
.rt-before { stroke: var(--ink-3); stroke-width: 2; stroke-dasharray: 5 5; }
.rt-gap { fill: var(--accent-soft); stroke: var(--accent); stroke-width: 1; }
.rt-lbl { font: italic 600 17px var(--f-body); }
.rt-lbl.a { fill: var(--gold); } .rt-lbl.b { fill: var(--accent-ink); }
.rt-ctl { font-size: 0.85rem; display: grid; gap: 10px; }
.rt-ctl .controls { margin-top: 2px; }
.rt-read { margin-top: 6px; }
.rt-log { margin-top: 16px; padding-top: 12px; border-top: 1px solid var(--line); }
.rt-log .kicker { margin-bottom: 6px; }
.rt-log tr.now td { color: var(--ink); font-weight: 600; }
.rt-log tr.same td:first-child { box-shadow: inset 3px 0 0 var(--accent); }

/* 4: extending context */
.sd-ctl { display: flex; flex-wrap: wrap; gap: 10px 24px; align-items: center; font-size: 0.85rem; margin-bottom: 16px; }
.sd-ctl > span { display: inline-flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.sd-clocks { display: grid; gap: 18px; grid-template-columns: 1fr; }
@media (min-width: 700px) { .sd-clocks { grid-template-columns: 1fr 1fr; } }
.sd-clock svg { width: 100%; max-width: 240px; display: block; margin: 0 auto; }
.sd-seen { fill: color-mix(in oklab, var(--ink-3) 35%, transparent); stroke: var(--ink-3); }
.sd-new { fill: color-mix(in oklab, var(--bad) 22%, transparent); stroke: var(--bad); stroke-width: 1; }
.sd-blur { fill: color-mix(in oklab, var(--bad) 30%, transparent); stroke: var(--bad); }
.sd-r { font-size: 0.86rem; color: var(--ink-2); margin: 8px 0 0; min-height: 3em; }
.sd-r b { color: var(--ink); } .sd-r b.bad { color: var(--bad); } .sd-r b.good { color: var(--good); }
.sd-pairs { margin-top: 18px; padding-top: 14px; border-top: 1px solid var(--line); }
.sd-bars { display: flex; align-items: flex-end; gap: 1px; height: 80px; }
.sd-bars i { flex: 1 1 0; height: var(--h); background: var(--accent); border-radius: 2px 2px 0 0; transition: height 0.3s var(--ease); }
.sd-bars i.kept { background: var(--gold); }
.sd-axis { display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; font: 0.72rem var(--f-mono); color: var(--ink-3); margin-top: 6px; }
.sd-base { color: var(--ink-2); } .sd-base b { color: var(--ink); }

/* a subtlety: the mask */
.ml-ctl { display: flex; flex-direction: column; gap: 10px; font-size: 0.85rem; margin-bottom: 16px; }
.ml-ctl > span { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.ml-join { stroke: var(--wc); stroke-width: 2; stroke-dasharray: 4 3; }
.ml-sq { fill: none; stroke: var(--wc); stroke-width: 2.5; }