/* Hand-built figures for lesson 16, Inference. */

/* shared: two columns that stack on a phone, a side panel, readouts */
.inf-two { display: grid; gap: 22px 28px; grid-template-columns: 1fr; align-items: start; }
@media (min-width: 820px) { .inf-two { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); } }
.inf-side .kicker { margin-bottom: 10px; }
.inf-side .slider { font-size: 0.85rem; margin: 6px 0; }
.inf-side .slider input, .inf-two .slider input { width: min(220px, 55vw); }
.inf-row { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; margin: 8px 0; font-size: 0.85rem; color: var(--ink-3); }
.inf-work { font: 0.92rem/1.6 var(--f-mono); color: var(--ink-2); margin: 6px 0; overflow-wrap: anywhere; }
.inf-work b { color: var(--ink); }
.inf-big { font: 400 1.9rem/1.1 var(--f-display); margin: 8px 0 4px; color: var(--ink); }
.inf-big.mem { color: var(--bad); } .inf-big.cmp { color: var(--good); }
.inf-sw { display: inline-block; width: 12px; height: 12px; border-radius: 3px; vertical-align: -1px; }
.c1 { background: var(--c1); } .c2 { background: var(--c2); } .c3 { background: var(--c3); } .c4 { background: var(--c4); } .c5 { background: var(--c5); } .c6 { background: var(--c6); } .c7 { background: var(--c7); }
.inf-two .seg button { padding: 0 10px; }

/* hero: a shelf of weights, a read head, the sentence typed out */
.hi { width: 100%; height: auto; display: block; margin: 0 auto; max-width: 900px; }
.hi-w { fill: var(--ink); fill-opacity: 0.16; }
.hi-head { fill: var(--gold); fill-opacity: 0.55; }
.hi-lbl { font: 500 18px var(--f-ui); fill: var(--ink-2); }
.hi-tok { font: 400 22px var(--f-body); fill: var(--ink); }

/* 1: the roofline */
.rl { width: 100%; height: auto; display: block; }
.rl-zone.mem { fill: var(--bad); fill-opacity: 0.06; } .rl-zone.cmp { fill: var(--good); fill-opacity: 0.07; }
.rl-zone-lbl { font: 600 12px var(--f-ui); fill: var(--ink-3); }
.rl-axis { stroke: var(--ink-3); stroke-width: 1.2; }
.rl-tick { font: 12px var(--f-mono); fill: var(--ink-3); }
.rl-tick.ridge { fill: var(--ink-2); }
.rl-roof { fill: none; stroke: var(--ink); stroke-width: 2.5; stroke-linejoin: round; }
.rl-ridge { stroke: var(--ink-3); stroke-dasharray: 4 4; }
.rl-drop { stroke: var(--ink-3); stroke-dasharray: 2 4; }
.rl-dot { stroke: var(--bg); stroke-width: 2; } .rl-dot.mem { fill: var(--bad); } .rl-dot.cmp { fill: var(--good); }
.rl-presets { margin: 4px 0 10px; gap: 8px; }
.rl-times { display: grid; gap: 6px; margin: 10px 0 6px; }
.rl-time { display: flex; justify-content: space-between; gap: 12px; padding: 8px 12px; border-radius: var(--r-1); background: var(--surface-2); border: 1px solid var(--line); font-size: 0.85rem; color: var(--ink-3); }
.rl-time .n { font-family: var(--f-mono); color: var(--ink-2); white-space: nowrap; }
.rl-time.hi { border-color: var(--gold); } .rl-time.hi .n { color: var(--ink); font-weight: 600; }

/* 2: positions per step */
.kp { margin-top: 14px; }
.kp-side .kicker { margin-bottom: 8px; }
.kp-bars { display: flex; align-items: flex-end; gap: 3px; height: 150px; padding: 0 2px 2px; border-bottom: 1px solid var(--line-2); }
.kp-bars i { flex: 1 1 0; min-width: 2px; display: block; border-radius: 3px 3px 0 0; background: var(--ink-3); opacity: 0.18; transition: opacity 0.2s; }
.kp-bars i.on { opacity: 1; background: var(--accent); }
[data-k="uncached"] i.on { background: var(--bad); }
.kp-bars i.now { outline: 2px solid var(--gold); outline-offset: 1px; }
.kp-total { font: 0.95rem var(--f-ui); color: var(--ink-2); margin: 8px 0 0; }
.kp-total b { font: 400 1.7rem/1 var(--f-display); color: var(--ink); }

/* 3: the formulas */
.kf { display: grid; gap: 26px; }
.kf-block .kicker { margin-bottom: 10px; }
.kf-factors { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 10px 8px; }
.kf-factors label, .kf-fixed, .kf-seg { display: flex; flex-direction: column; align-items: center; gap: 4px; font-size: 0.78rem; color: var(--ink-3); }
.kf-factors b { font: 500 1.15rem var(--f-mono); color: var(--ink); }
.kf-factors input[type="range"] { width: 92px; }
.kf-factors small { font-size: 0.75rem; }
.kf-x { font: 400 1.4rem var(--f-display); color: var(--ink-3); padding-bottom: 20px; }
.kf-result { font: 0.92rem/1.6 var(--f-mono); color: var(--ink-2); margin: 12px 0 6px; overflow-wrap: anywhere; }
.kf-result b { color: var(--ink); }
.kf-block .slider { font-size: 0.85rem; margin: 6px 0; }
.kf-fit-n { font: 0.95rem var(--f-ui); color: var(--ink-2); margin: 10px 0 8px; }
.kf-fit-n b { font: 400 1.6rem/1 var(--f-display); color: var(--ink); }
.kf-fit-n b.bad { font: 600 1rem var(--f-ui); color: var(--bad); }
.kf-bags { display: flex; flex-wrap: wrap; gap: 4px; align-items: center; min-height: 14px; }
.kf-bags i { width: 14px; height: 14px; border-radius: 3px; background: var(--accent); opacity: 0.85; }
.kf-bags span { font: 0.8rem var(--f-mono); color: var(--ink-3); margin-left: 4px; }

/* 4: sampling */
.sk-out { align-self: center; }
.sk-row { display: grid; grid-template-columns: 24px 1fr 52px minmax(70px, auto); gap: 10px; align-items: center; margin: 9px 0; font-family: var(--f-ui); font-size: 0.85rem; }
.sk-n { font: 600 0.95rem var(--f-mono); color: var(--ink-2); }
.sk-bar { height: 22px; border-radius: 6px; background: var(--surface-2); overflow: hidden; }
.sk-bar i { display: block; height: 100%; background: var(--accent); transition: width 0.2s; }
.sk-row:first-child .sk-bar i { background: var(--gold); }
.sk-row.cut .sk-bar i { background: repeating-linear-gradient(135deg, var(--bad) 0 3px, transparent 3px 7px); opacity: 0.7; }
.sk-row b { text-align: right; font-variant-numeric: tabular-nums; color: var(--ink); }
.sk-row.cut b { color: var(--bad); font-weight: 500; }
.sk-tally { font: 0.8rem var(--f-mono); color: var(--ink-3); }

/* 5: speculative decoding */
.dv-bars { margin: 12px 0; display: grid; gap: 10px; }
.dv-tok { display: grid; grid-template-columns: 22px 1fr; gap: 4px 10px; align-items: center; }
.dv-n { font: 600 0.95rem var(--f-mono); color: var(--ink-2); grid-row: span 2; }
.dv-pair { position: relative; height: 22px; border-radius: 6px; background: var(--surface-2); overflow: hidden; }
.dv-pair i { position: absolute; left: 0; top: 0; height: 100%; }
.dv-pair .dv-p { background: var(--gold); opacity: 0.55; }
.dv-pair .dv-q { background: var(--accent); opacity: 0.55; }
.dv-pair .dv-min { background: var(--ink); opacity: 0.55; height: 8px; top: 7px; border-radius: 4px; }
.dv-v { font: 0.78rem var(--f-mono); color: var(--ink-3); }
.dv-legend { font-size: 0.8rem; color: var(--ink-3); margin: 4px 0 0; }
.dv-legend i { display: inline-block; width: 12px; height: 12px; border-radius: 3px; vertical-align: -1px; }
.dv-legend .dv-p { background: var(--gold); } .dv-legend .dv-q { background: var(--accent); } .dv-legend .dv-min { background: var(--ink); }
.dv-read .inf-big { color: var(--good); }
.dv-round .controls { margin: 0 0 12px; }
.dv-chips { min-height: 128px; }
.dv-chip-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 8px 0; }
.dv-chip { display: inline-flex; flex-direction: column; align-items: center; gap: 2px; min-width: 64px; padding: 8px 10px; border-radius: var(--r-1); border: 1px solid var(--line-2); background: var(--surface-2); }
.dv-chip em { font: 600 1.1rem var(--f-mono); font-style: normal; color: var(--ink); }
.dv-chip small { font-size: 0.72rem; color: var(--ink-3); white-space: nowrap; }
.dv-chip.kept { border-color: var(--good); } .dv-chip.kept em { color: var(--good); }
.dv-chip.replaced { border-color: var(--bad); } .dv-chip.replaced em { color: var(--bad); text-decoration: line-through; }
.dv-chip.dropped { opacity: 0.4; } .dv-chip.dropped em { text-decoration: line-through; }
.dv-chip.bonus { border-color: var(--gold); } .dv-chip.bonus em { color: var(--gold); }
.dv-out { font-size: 0.9rem; color: var(--ink-2); margin: 6px 0; }
.dv-tally { font-size: 0.9rem; color: var(--ink-2); margin: 0; min-height: 1.4em; }
.dv-tally b { font: 400 1.4rem/1 var(--f-display); color: var(--ink); }

/* 6: quantization */
.qr { width: 100%; height: auto; display: block; touch-action: none; margin-top: 8px; }
.qr-axis { stroke: var(--ink-3); stroke-width: 1.2; }
.qr-tick { font: 12px var(--f-mono); fill: var(--ink-3); }
.qr-tick.lvl { fill: var(--ink-2); }
.qr-mark { stroke: var(--accent); stroke-width: 1.5; } .qr-mark.zero { stroke: var(--ink); stroke-width: 2; }
.qr-band { fill: var(--accent); fill-opacity: 0.25; }
.qr-snap { fill: none; stroke: var(--ink-3); stroke-dasharray: 3 3; }
.qr-hat { fill: var(--accent); stroke: var(--bg); stroke-width: 2; }
.qr-w { font: 12px var(--f-mono); fill: var(--ink-2); }
.qr-handle { fill: var(--gold); fill-opacity: 0.85; stroke: var(--bg); stroke-width: 2; cursor: grab; }
.qr-handle:focus-visible { outline: none; stroke: var(--ink); stroke-width: 3; }
.qr-table { border-collapse: collapse; font: 0.85rem var(--f-mono); color: var(--ink-2); margin: 6px 0; }
.qr-table th { font: 600 0.75rem var(--f-ui); color: var(--ink-3); text-align: left; padding: 4px 14px 4px 0; }
.qr-table td { padding: 4px 14px 4px 0; border-top: 1px solid var(--line); font-variant-numeric: tabular-nums; }
.qr-table tr.gone td { color: var(--bad); }

/* 7: batching */
.st-lens { display: flex; flex-wrap: wrap; gap: 6px 22px; margin-bottom: 6px; }
.st-len { font-size: 0.82rem; }
.st-len input[type="range"] { width: 90px; }
.st-len b { min-width: 1.2ch; }
.st-runs { display: grid; gap: 18px; margin-top: 14px; }
.st-run .kicker { margin-bottom: 8px; }
.st-grid { display: grid; gap: 3px; }
.st-grid i { display: block; height: 22px; border-radius: 3px; border: 1px dashed var(--line-2); }
.st-grid i.idle { background: repeating-linear-gradient(135deg, var(--line-2) 0 2px, transparent 2px 6px); }
.st-grid i.past { border-color: transparent; }
.st-grid i.c1, .st-grid i.c2, .st-grid i.c3, .st-grid i.c4, .st-grid i.c5, .st-grid i.c6, .st-grid i.c7 { border-color: transparent; }
.st-axis { display: flex; justify-content: space-between; font: 0.75rem var(--f-mono); color: var(--ink-3); margin: 4px 0 0; }

/* 8: prompt caching */
.po-order { display: flex; flex-wrap: wrap; gap: 8px; }
.po-block { display: flex; flex-direction: column; gap: 4px; padding: 10px 12px; border-radius: var(--r-1); border: 1px solid var(--line-2); background: var(--surface-2); min-width: 150px; flex: 1 1 150px; }
.po-block.stable { border-color: var(--accent); } .po-block.volatile { border-color: var(--gold); }
.po-name { font: 600 0.9rem var(--f-ui); color: var(--ink); }
.po-tok { font: 0.75rem var(--f-mono); color: var(--ink-3); }
.po-move { display: flex; gap: 6px; margin-top: 4px; }
.po-move .btn.small { height: 28px; padding: 0 10px; }
.po-move .btn[disabled] { opacity: 0.35; cursor: default; }
.po .controls { margin: 12px 0; }
.po-stamp { display: flex; gap: 8px; align-items: center; font-size: 0.85rem; color: var(--ink-2); }
.po-req { display: grid; grid-template-columns: 76px 1fr; gap: 10px; align-items: center; margin: 6px 0; }
.po-req-l { font: 0.78rem var(--f-mono); color: var(--ink-3); }
.po-strip { display: flex; gap: 2px; height: 20px; }
.po-strip i { display: block; height: 100%; border-radius: 3px; min-width: 3px; }
.po-strip i.shared { background: var(--accent); }
.po-strip i.fresh { background: repeating-linear-gradient(135deg, var(--ink-3) 0 3px, transparent 3px 7px); opacity: 0.6; }
.po-key { font-size: 0.8rem; color: var(--ink-3); margin: 8px 0 0; }
.po-key i { display: inline-block; width: 12px; height: 12px; border-radius: 3px; vertical-align: -1px; }
.po-key i.shared { background: var(--accent); } .po-key i.fresh { background: repeating-linear-gradient(135deg, var(--ink-3) 0 3px, transparent 3px 7px); }
.po-costs { display: grid; gap: 10px; grid-template-columns: 1fr; margin-top: 14px; }
@media (min-width: 720px) { .po-costs { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.po-c { display: flex; flex-direction: column; gap: 4px; padding: 12px 14px; border-radius: var(--r-1); background: var(--surface-2); border: 1px solid var(--line); }
.po-c .n { font: 400 1.7rem/1 var(--f-display); color: var(--ink); }
.po-c .l { font-size: 0.8rem; color: var(--ink-3); }
.po-c.hi { border-color: var(--accent); }
.po-c.good .n { color: var(--good); } .po-c.bad .n { color: var(--ink-3); }