/* Lecture 18 uses a scaled Reveal canvas with fixed projection columns. */
.reveal .slides section { box-sizing: border-box; }
.reveal .slides .l18-slide { text-align: left; }
.reveal .l18-slide h1 { margin: 0 0 24px; font-size: 50px; line-height: 1.15; text-transform: none; }
.reveal .l18-slide h2, .reveal .demo-context-slide h2 { margin: 0 0 19px; padding-bottom: 10px; font-size: 33px; line-height: 1.2; text-transform: none; border-bottom-width: 2px; }
.reveal .l18-slide h3 { margin: 0 0 13px; font-size: 23px; line-height: 1.25; text-transform: none; }
.reveal .l18-slide p { max-width: none; margin: 0 0 14px; line-height: 1.4; }
.reveal .l18-slide .l18-kicker { margin: 0 0 9px; color: #a8b875; font-size: 15px; font-weight: 700; letter-spacing: .05em; }
.l18-columns { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: 22px; align-items: stretch; }
.l18-grid { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: 18px; }
.l18-card { box-sizing: border-box; min-width: 0; padding: 20px; background: #292725; border: 1px solid #514b44; border-radius: 12px; font-size: 21px; }
.l18-grid .l18-card { padding: 18px 20px; font-size: 20px; }
.reveal .l18-slide .l18-note { margin: 13px 0 0; font-size: 18px; line-height: 1.4; color: #c2bbb1; }
.reveal .l18-slide .l18-equation { margin: 18px 0; font-size: 22px; }
.reveal .l18-slide .l18-question { margin: 20px 0 0; padding: 11px 16px; border-left: 3px solid #a8b875; background: #303029; color: #e6dfd2; font-size: 21px; line-height: 1.35; }
.l18-lab-columns { grid-template-columns: minmax(0,1.55fr) minmax(0,1fr); }
.l18-chart-columns { grid-template-columns: minmax(0,1.55fr) minmax(0,1fr); }
.l18-gallery { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 18px; }
.l18-gallery .l18-card { padding: 16px 13px; }
.l18-gallery canvas { display: block; width: 100% !important; height: auto !important; margin: 0; }
.reveal .l18-table { width: 100%; margin: 0; border-collapse: collapse; font-size: 20px; }
.l18-table caption { padding: 0 0 13px; color: #c2bbb1; font-size: 18px; line-height: 1.35; text-align: left; }
.reveal .l18-table th, .reveal .l18-table td { padding: 12px 7px; border-bottom: 1px solid #514b44; text-align: right; font-variant-numeric: tabular-nums; }
.reveal .l18-table th:first-child { text-align: left; }
.reveal .l18-table thead th { color: #e3a64b; font-size: 17px; }
.reveal .l18-small-table { font-size: 17px; }
.reveal .l18-small-table th, .reveal .l18-small-table td { padding: 7px 5px; font-size: 17px; line-height: 1.2; }
.reveal .l18-small-table thead th { font-size: 16px; }
.reveal .l18-trace-table th, .reveal .l18-trace-table td { padding-top: 4px; padding-bottom: 4px; }
.l18-controls.demo-controls { display: flex; flex-direction: column; justify-content: flex-start; gap: 0; }
.reveal .l18-controls label { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; margin: 0 0 11px; color: #eeeeec; font-size: 20px; line-height: 1.3; }
.reveal .l18-controls label:not(:first-child) { margin-top: 17px; }
.l18-controls label output { flex: 0 0 auto; color: #e3a64b; font-variant-numeric: tabular-nums; }
.l18-controls.demo-controls input[type=range] { height: 26px; margin: 0 0 5px; }
.l18-controls select { box-sizing: border-box; width: 100%; min-height: 40px; padding: 8px; border: 1px solid #797065; border-radius: 6px; background: #34302c; color: #eeeeec; font: inherit; font-size: 18px; }
.l18-controls select:focus-visible { outline: 2px solid #e3a64b; outline-offset: 3px; }
.l18-metrics { margin: 13px 0 0; font-size: 19px; line-height: 1.35; }
.l18-metrics > div { display: grid; grid-template-columns: minmax(0,1fr) auto; align-items: center; gap: 10px; padding: 13px 0; border-bottom: 1px solid #514b44; }
.l18-metrics dt { font-weight: 400; }
.l18-metrics dd { margin: 0; color: #a8b875; font-size: 23px; font-weight: 700; font-variant-numeric: tabular-nums; }
.l18-chart-card { padding: 13px 15px; }
.l18-chart-card canvas { display: block; width: 100% !important; height: auto !important; max-height: none !important; border-radius: 8px; background: #252423; }
.l18-legend { display: flex; flex-wrap: wrap; gap: 10px 22px; margin-top: 10px; color: #ddd6cc; font-size: 17px; }
.l18-legend > span { display: inline-flex; align-items: center; gap: 8px; }
.l18-line { display: inline-block; width: 25px; border-top: 3px solid #e3a64b; }
.l18-muted-line { border-color: #b4b0a9; border-top-style: dashed; }
.l18-network { display: grid; grid-template-columns: 80px minmax(0,1fr) 80px; align-items: center; gap: 12px; width: 80%; margin: 16px auto 7px; }
.l18-node { padding: 6px 8px; border: 1px solid #797065; border-radius: 20px; color: #eeeeec; font-size: 17px; text-align: center; }
.l18-edge { height: 5px; background: #a8b875; }
.reveal .l18-slide .l18-edge-label { margin: 0; font-size: 17px; text-align: center; color: #c2bbb1; }
.reveal .l18-slide .l18-source-formula { margin: 12px 0 0; color: #c2bbb1; font-size: 16px; line-height: 1.5; }
.l18-cases { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 10px; margin: 18px 0; }
.l18-cases > div { display: grid; gap: 12px; padding: 12px 8px; border: 1px solid #797065; border-radius: 6px; font-size: 18px; text-align: center; }
.l18-cases > div:first-child, .l18-cases > div:last-child { border-color: #e3a64b; }
.l18-cases strong { font-weight: 600; color: #e3a64b; }
.l18-schema { display: grid; gap: 9px; margin: 16px 0; padding: 12px; border: 1px solid #514b44; border-radius: 7px; background: #252423; font-size: 18px; }
.reveal .l18-slide .l18-schema code { padding: 0; color: #d4c37f; background: transparent; }
.reveal .l18-slide .l18-query { margin: 0 0 16px; padding: 12px; background: #252423; border: 1px solid #797065; border-radius: 6px; font-size: 22px; }
.l18-caret { color: #e3a64b; }
.l18-sql-invalid { color: #928b82; background: rgba(255,113,133,.035); }
.l18-sql-invalid th { text-decoration: line-through; }
.l18-flow { display: grid; gap: 8px; margin: 15px 0 18px; }
.l18-flow span { display: block; padding: 9px 12px; border-left: 3px solid #e3a64b; background: #252423; font-size: 20px; }
.reveal .l18-slide .l18-formula { margin: 17px 0 0; padding: 10px 12px; background: #303029; border-left: 3px solid #a8b875; font-size: 20px; line-height: 1.35; }
.l18-trace-excluded { opacity: .38; }
.l18-trace-in-event { background: rgba(168,184,117,.16); }
.reveal .l18-title .l18-kicker { margin-bottom: 28px; color: #252423; }
.reveal .l18-title .l18-subtitle { margin-top: 28px; font-size: 25px; }
.reveal .l18-title .l18-author { margin-top: 30px; font-size: 23px; }
/* The existing paper-context component uses five tracks for its three nodes. */
.reveal .demo-context-slide .demo-example-label { margin-bottom: 10px; font-size: 15px; }
.reveal .demo-context-columns { display: grid; grid-template-columns: minmax(0,1.25fr) minmax(0,1fr); gap: 22px; }
.reveal .demo-context-slide #left, .reveal .demo-context-slide #right { width: 100% !important; float: none; margin: 0; }
.reveal .demo-context-visual { display: grid; grid-template-columns: minmax(0,1fr) 22px minmax(0,1fr) 22px minmax(0,1fr); gap: 7px; align-items: center; min-height: 270px; padding: 16px; box-sizing: border-box; }
.reveal .demo-context-node { box-sizing: border-box; min-height: 145px; padding: 12px 8px; font-size: 18px; line-height: 1.3; overflow-wrap: anywhere; }
.reveal .demo-context-arrow { font-size: 25px; text-align: center; }
.reveal .demo-context-slide #right.demo-context-copy { min-height: 270px; padding: 18px; font-size: 20px; line-height: 1.4; }
.reveal .demo-context-copy p { font-size: inherit; line-height: inherit; }
.reveal .demo-context-copy a { overflow-wrap: anywhere; }
.audio-controls:not(:has(audio[src],source[src])) { display: none; }
.reveal .practice-card { box-sizing: border-box; margin: 0 auto; padding: 22px 26px; }
.reveal .practice-card h2 { font-size: 28px !important; line-height: 1.2 !important; }
.reveal .practice-card .practice-scenario, .reveal .practice-card .practice-data p, .reveal .practice-card .practice-tasks { font-size: 20px; line-height: 1.4; }
.reveal .practice-card .practice-tasks li { margin: 9px 0; }
.reveal .practice-number, .reveal .practice-domain { font-size: 13px; }
.reveal .practice-data > span { font-size: 12px; }