/* Module 4: keep the circuit, stored bits and displayed records distinct. */
.accent-amber { --accent: #94521d; --tint: #f7eee2; }
.reveal .m4-cover h1 { font-size: 59px; margin: 26px 0 18px; max-width: 1040px; }
.reveal .m4-cover .cover-number { font-size: 132px; top: 5px; }
.reveal .m4-message h2 { font-size: 43px; max-width: 1150px; }
.reveal .m4-claims { margin-top: 30px; }
.reveal .m4-claims p { padding: 24px 0; border-top: 1px solid var(--line); font-size: 28px; line-height: 1.35; }
.reveal .m4-claims span { flex: 0 0 40px; }
.reveal .m4-circuit { width: 100%; margin: 0 auto; }
.m4-wire-label { font: 32px Arial, sans-serif; fill: var(--ink); }
.m4-gate-label { font: 600 34px Arial, sans-serif; fill: var(--accent); text-anchor: middle; }
.m4-record-label { font: 28px ui-monospace, monospace; fill: var(--muted); }
.m4-classical-wire { stroke: var(--muted); stroke-width: 1.8; fill: none; }
.reveal .m4-wide-circuit { max-width: 1050px; margin: 15px auto; }
.reveal .m4-wide-circuit .m4-circuit { max-height: 220px; }
.reveal .m4-cover .m4-wide-circuit { max-width: 1000px; margin: 8px auto 12px; }
.reveal .m4-cover .m4-circuit { max-height: 212px; }
.reveal .m4-cover .takeaway { margin-top: 15px; }
.reveal .m4-cover .question { margin-top: 18px; }
.reveal .m4-code-layout { grid-template-columns: 1fr 1fr; align-items: stretch; gap: 30px; margin-top: 22px; }
.reveal .m4-code-layout > div { min-width: 0; }
.reveal .m4-diagram-panel { padding: 20px 18px; background: var(--tint); border-radius: 5px; display: flex; flex-direction: column; justify-content: center; }
.reveal .m4-diagram-panel .label { margin-left: 5px; }
.reveal pre.m4-code { width: 100%; margin: 0; padding: 22px 23px; background: #fffefa; color: var(--ink); border: 1px solid var(--line); border-radius: 5px; box-shadow: none; font: 26px/1.5 ui-monospace, 'DejaVu Sans Mono', monospace; text-align: left; white-space: pre; }
.reveal .m4-code code { display: block; padding: 0; max-height: none; overflow: visible; font: inherit; white-space: pre; }
.m4-code-line { display: block; min-height: 1.5em; }
.m4-code-gap { margin-top: 10px; }
.m4-keyword { color: var(--accent); font-weight: 700; }
.m4-string { color: #315f7c; }
.m4-muted, .m4-muted .m4-keyword, .m4-muted .m4-string { color: #7b8387; font-weight: 400; }
.reveal .m4-code-small { font-size: 25px; }
.reveal .m4-operand-key { display: flex; justify-content: space-around; gap: 20px; padding: 15px 10px 0; }
.reveal .m4-operand-key p { font-size: 23px; margin: 0; }
.reveal .m4-storage-pair { display: flex; justify-content: center; gap: 24px; margin: 12px 0; }
.reveal .m4-storage { border: 1px solid var(--accent); border-radius: 5px; padding: 15px 27px; text-align: center; background: var(--paper); }
.reveal .m4-storage code { display: block; font-size: 24px; }
.reveal .m4-storage strong { display: block; font-size: 43px; font-weight: 600; margin-top: 10px; }
.reveal .m4-storage .m4-bit-placeholder { font-size: 25px; }
.reveal .m4-registers .m4-diagram-panel { gap: 6px; }
.reveal .m4-registers .m4-circuit { max-height: 146px; }
.reveal .m4-code-explanation { margin-top: 24px; padding: 20px 24px; background: var(--tint); }
.reveal .m4-code-explanation p { margin: 0; font-size: 27px; }
.reveal .m4-equivalence { display: flex; align-items: center; gap: 25px; margin-top: 20px; padding: 18px 22px; background: var(--tint); font-size: 24px; }
.reveal .m4-equivalence code { white-space: nowrap; line-height: 1.6; }
.reveal .m4-conventions { font-size: 20px; line-height: 1.4; color: var(--muted); margin-top: 21px; }
.reveal .m4-conventions > .m4-separator { margin: 0 18px; }
.reveal .m4-display-layout { display: grid; grid-template-columns: 1fr 50px 1fr; align-items: center; gap: 25px; margin-top: 60px; }
.reveal .m4-display-layout > div { min-width: 0; }
.reveal .m4-arrow { font-size: 38px; color: var(--accent); text-align: center; }
.reveal .m4-record { display: flex; justify-content: center; gap: 0; margin: 12px 0; }
.reveal .m4-record > div { text-align: center; min-width: 110px; border: 1px solid var(--accent); border-right: 0; background: var(--paper); }
.reveal .m4-record > div:last-child { border-right: 1px solid var(--accent); }
.reveal .m4-record span { display: block; font: 21px/1.4 ui-monospace, monospace; padding: 8px 10px; color: var(--accent); border-bottom: 1px solid var(--line); }
.reveal .m4-record strong { display: block; font: 600 58px/1.2 ui-monospace, monospace; padding: 10px 18px; }
.reveal .m4-record-large > div { min-width: 125px; }
.reveal .m4-record-large strong { font-size: 72px; }
.reveal .m4-trace-circuit { max-width: 870px; margin: 0 auto; }
.reveal .m4-trace-circuit .m4-circuit { max-height: 160px; }
.reveal .m4-trace-steps { display: grid; grid-template-columns: 1fr 36px 1fr 36px 1fr; gap: 10px; align-items: center; margin-top: 18px; }
.reveal .m4-trace-steps .panel { padding: 16px 20px; min-height: 190px; }
.reveal .m4-trace-steps .label { margin-bottom: 12px; }
.reveal .m4-trace-steps p { font-size: 25px; }
.reveal .m4-trace-steps .m4-record { margin: 0; }
.reveal .m4-trace-steps .m4-record > div { min-width: 90px; }
.reveal .m4-trace-steps .m4-record strong { font-size: 45px; padding: 7px; }
.reveal .m4-trace-steps .m4-record span { font-size: 19px; padding: 4px 8px; }
.reveal .m4-trace-steps .katex-display { margin: 10px 0; }
.reveal .m4-swap-layout { align-items: stretch; grid-template-columns: 1.08fr .92fr; }
.reveal .m4-swap-layout .m4-circuit { margin: 15px 0; }
.reveal .m4-response { padding: 18px 25px; margin-top: 22px; border-left: 4px solid var(--accent); background: var(--tint); }
.reveal .m4-response p { font-size: 27px; margin-bottom: 10px; }
.reveal .m4-response p:last-child { margin-bottom: 0; }
.reveal .m4-swap-answer { display: flex; flex-direction: column; justify-content: center; }
.reveal .m4-swap-answer p { font-size: 26px; }
.reveal .m4-swap-answer .m4-record { margin: 18px 0 0; }
.reveal .m4-mapping-table td { font-size: 31px; padding: 20px 24px; }
.reveal .m4-mapping-table th { font-size: 21px; }
.reveal .m4-mapping-table th:not(:first-child), .reveal .m4-mapping-table td:not(:first-child) { text-align: center; }
.reveal .m4-mapping-table .m4-unequal td { background: var(--tint); }
.reveal .m4-flow { display: grid; grid-template-columns: 1fr 35px 1fr 35px 1fr; gap: 10px; align-items: center; margin-top: 18px; }
.reveal .m4-flow .panel { align-self: stretch; padding: 20px 25px; }
.reveal .m4-flow p { font-size: 25px; }
.reveal .m4-flow .label { font-size: 17px; }
.reveal .m4-target { background: var(--paper); border: 1px solid var(--line); padding: 15px; margin-top: 16px; font-size: 24px; }
.reveal .m4-flow .m4-record { margin: 20px 0; }
.reveal .m4-flow .m4-record > div { min-width: 92px; }
.reveal .m4-state-circuit { max-width: 780px; margin: 0 auto; }
.reveal .m4-state-circuit .m4-circuit { max-height: 118px; }
.reveal .m4-state-table { margin-top: 12px; }
.reveal .m4-state-table th, .reveal .m4-state-table td { text-align: center; padding: 13px 20px; }
.reveal .m4-state-table th { font-size: 20px; }
.reveal .m4-state-table td { font-size: 31px; }
.reveal .m4-state-table td:first-child, .reveal .m4-state-table th:first-child { text-align: left; font-size: 24px; width: 29%; }
.reveal .m4-shot-flow { display: grid; grid-template-columns: 1fr 28px 1fr 28px 1fr 28px 1fr; gap: 10px; margin-top: 40px; align-items: center; }
.reveal .m4-shot-flow .panel { padding: 23px 16px; text-align: center; align-self: stretch; }
.reveal .m4-shot-flow .label { margin-bottom: 14px; }
.reveal .m4-shot-flow p { font-size: 27px; }
.reveal .m4-shot-flow .m4-record { margin: 0; }
.reveal .m4-shot-flow .m4-record > div { min-width: 70px; }
.reveal .m4-shot-flow .m4-record span { font-size: 17px; padding: 5px; }
.reveal .m4-shot-flow .m4-record strong { font-size: 39px; padding: 6px; }
.reveal .m4-shot-examples { display: flex; justify-content: space-around; gap: 25px; padding: 22px 10px; margin-top: 35px; border-top: 1px solid var(--line); }
.reveal .m4-shot-examples p { font-size: 24px; margin: 0; }
.reveal .m4-shot-examples code { font-size: 33px; color: var(--accent); margin-left: 12px; }
.reveal .m4-counts-layout { grid-template-columns: 1fr 1fr; align-items: stretch; margin-top: 30px; }
.reveal .m4-counts { margin-top: 5px; }
.reveal .m4-counts td { font-size: 36px; padding: 19px 22px; }
.reveal .m4-counts th { font-size: 19px; }
.reveal .m4-counts td:last-child, .reveal .m4-counts th:last-child { text-align: right; }
.reveal .m4-estimate { display: flex; flex-direction: column; justify-content: center; }
.reveal .m4-estimate .math { font-size: 45px; }
.reveal .m4-big-number { font-size: 68px; color: var(--accent); font-weight: 600; line-height: 1.15; margin: 18px 0; }
.reveal .m4-compare { margin-top: 35px; align-items: stretch; }
.reveal .m4-compare .panel { padding: 24px 28px; }
.reveal .m4-compare p { font-size: 26px; }
.reveal .m4-compare .label { font-size: 17px; }
.reveal .m4-compare .m4-big-number { font-size: 66px; }
.reveal .m4-zero-layout { margin-top: 23px; align-items: start; }
.reveal .m4-zero-layout .m4-counts td { padding: 12px 22px; font-size: 29px; }
.reveal .m4-zero-row { background: var(--tint); }
.reveal .m4-zero-layout .m4-big-number { font-size: 49px; margin: 12px 0; }
.reveal .m4-zero-layout .panel { padding: 20px 25px; }
.reveal .m4-zero-layout .panel p { font-size: 24px; }
.reveal .m4-zero-layout .label { font-size: 16px; }
.reveal .m4-zero-layout .math { font-size: 30px; }
.reveal .m4-exercise-link { display: block; padding: 22px 27px; border: 1px solid var(--accent); background: var(--tint); margin: 28px 0; text-decoration: none; font-size: 28px; }
.reveal .m4-exercise-steps { display: flex; gap: 20px; margin: 30px 0; }
.reveal .m4-exercise-steps > div { flex: 1; padding-top: 18px; border-top: 2px solid var(--accent); }
.reveal .m4-exercise-steps span { color: var(--accent); font-size: 18px; font-weight: 700; }
.reveal .m4-exercise-steps p { font-size: 26px; margin-top: 12px; }

/* The simulation example follows the same Bell preparation numerically. */
.reveal .m4-simulation > p:not(.eyebrow):not(.m4-conventions) { font-size: 27px; }
.reveal .m4-sim-evolution { font-size: 31px; margin: 20px 0; }
.reveal .m4-sim-evolution .katex-display { margin: 0; }
.reveal .m4-simulation .m4-state-table { margin-top: 16px; }
.reveal .m4-simulation .takeaway { margin-top: 20px; }
.reveal .m4-simulation .m4-conventions { margin-top: 16px; }

.reveal .m4-simulation .m4-state-table th, .reveal .m4-simulation .m4-state-table td { padding: 10px 20px; }