/* Component styles for CSE 840 demos; the Vishnu Reveal theme owns the slide chrome and typography. */
.reveal{--demo-bg:var(--background-color);--demo-surface:#292725;--demo-raised:#312e2b;--demo-border:rgba(214,193,166,.14);--demo-border-strong:rgba(214,193,166,.24);--demo-text:var(--main-color);--demo-muted:#c2bbb1;--demo-faint:#928b82;--demo-accent:var(--link-color);--demo-secondary:#d4c37f;--demo-amber:#ffad32;--demo-green:#a8b875;--demo-danger:#ff7185;--demo-radius:14px;--demo-shadow:0 22px 60px rgba(0,0,0,.24)}
.reveal .slides section{text-rendering:optimizeLegibility}
.demo-layout{display:grid;grid-template-columns:minmax(0,1.18fr) minmax(280px,.82fr);gap:24px;align-items:stretch;width:min(1100px,96%);margin:0 auto;text-align:left}
.demo-panel{position:relative;min-width:0;overflow:hidden;background:linear-gradient(145deg,rgba(49,46,43,.96),rgba(39,37,34,.98));border:1px solid var(--demo-border);border-radius:var(--demo-radius);padding:20px 22px;box-shadow:var(--demo-shadow)}
.demo-panel::after{content:"";position:absolute;inset:0;pointer-events:none;border-radius:inherit;box-shadow:inset 0 1px rgba(255,255,255,.035)}
.demo-panel canvas{display:block;width:100%;height:auto;max-height:58vh;margin:0 auto;background:radial-gradient(circle at 22% 12%,rgba(255,165,0,.045),transparent 38%),var(--demo-bg);border:1px solid rgba(214,193,166,.08);border-radius:10px;touch-action:none}
.demo-controls{display:flex;flex-direction:column;justify-content:center;gap:4px}
.demo-controls label{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin:11px 0 6px;color:var(--demo-muted);font-size:.48em;font-weight:580;line-height:1.25;letter-spacing:.01em;text-transform:none}
.demo-label-text{min-width:0;text-align:left}
.demo-value{flex:0 0 auto;min-width:3.6em;color:var(--demo-accent);font-variant-numeric:tabular-nums;font-weight:700;text-align:right}
.demo-matrix-card{display:flex;align-items:center;justify-content:center;gap:14px;margin:0 0 12px;padding:13px 15px;color:var(--demo-text);background:rgba(24,22,20,.48);border:1px solid rgba(214,193,166,.12);border-radius:10px}
.demo-matrix-symbol{color:var(--demo-muted);font-family:Georgia,"Times New Roman",serif;font-size:.64em;font-style:italic;line-height:1}
.demo-matrix-values{--demo-matrix-cols:2;position:relative;display:grid;grid-template-columns:repeat(var(--demo-matrix-cols),minmax(3.2em,auto));gap:7px 14px;padding:5px 17px;font-size:.52em;font-variant-numeric:tabular-nums;line-height:1.15;text-align:center}
.demo-matrix-values::before,.demo-matrix-values::after{content:"";position:absolute;top:0;bottom:0;width:8px;border-top:1.5px solid var(--demo-muted);border-bottom:1.5px solid var(--demo-muted)}
.demo-matrix-values::before{left:0;border-left:1.5px solid var(--demo-muted)}.demo-matrix-values::after{right:0;border-right:1.5px solid var(--demo-muted)}
.demo-matrix-cell{min-width:3.2em;color:var(--demo-text);font-weight:680}
.demo-controls input[type=range]{width:100%;height:22px;margin:0 0 4px;appearance:none;-webkit-appearance:none;background:transparent;cursor:pointer;accent-color:var(--demo-accent)}
.demo-controls input[type=range]::-webkit-slider-runnable-track{height:5px;border-radius:99px;background:linear-gradient(90deg,var(--demo-accent) var(--demo-fill,50%),#514b44 var(--demo-fill,50%))}
.demo-controls input[type=range]::-webkit-slider-thumb{width:18px;height:18px;margin-top:-6.5px;appearance:none;-webkit-appearance:none;border:3px solid #fff8ee;border-radius:50%;background:var(--demo-accent);box-shadow:0 0 0 4px rgba(255,165,0,.14),0 4px 12px rgba(0,0,0,.35);transition:transform 140ms ease,box-shadow 140ms ease}
.demo-controls input[type=range]::-moz-range-track{height:5px;border-radius:99px;background:#514b44}.demo-controls input[type=range]::-moz-range-progress{height:5px;border-radius:99px;background:var(--demo-accent)}
.demo-controls input[type=range]::-moz-range-thumb{width:14px;height:14px;border:3px solid #fff8ee;border-radius:50%;background:var(--demo-accent);box-shadow:0 0 0 4px rgba(255,165,0,.14)}
.demo-controls input[type=range]:hover::-webkit-slider-thumb,.demo-controls input[type=range]:focus-visible::-webkit-slider-thumb{transform:scale(1.08);box-shadow:0 0 0 6px rgba(255,165,0,.18),0 5px 14px rgba(0,0,0,.4)}
.demo-controls input[type=range]:focus-visible,.demo-presets button:focus-visible,.demo-reset:focus-visible{outline:2px solid var(--demo-accent);outline-offset:4px}
.demo-controls input[type=checkbox]{width:18px;height:18px;accent-color:var(--demo-accent)}
.demo-readout{margin-top:14px;padding:13px 15px;color:var(--demo-muted);background:rgba(24,22,20,.48);border:1px solid rgba(214,193,166,.1);border-left:3px solid var(--demo-amber);border-radius:9px;font-size:.47em;line-height:1.55;text-align:left;font-variant-numeric:tabular-nums}
.demo-readout b,.demo-readout strong{color:var(--demo-text);font-weight:720}
.demo-insight{position:relative;max-width:920px;margin:16px auto 0;padding:12px 16px 12px 42px;color:var(--demo-muted);background:rgba(255,165,0,.07);border:1px solid rgba(255,165,0,.2);border-radius:10px;font-size:.46em;line-height:1.45;text-align:left}
.demo-insight::before{content:"↳";position:absolute;left:15px;top:10px;color:var(--demo-accent);font-size:1.35em;font-weight:800}
.demo-legend{display:flex;gap:10px 16px;flex-wrap:wrap;margin-top:12px;color:var(--demo-muted);font-size:.42em}.demo-legend span{display:inline-flex;align-items:center;gap:7px}.demo-dot{display:inline-block;width:9px;height:9px;border-radius:50%;box-shadow:0 0 0 3px rgba(255,255,255,.04)}
.demo-presets{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}.demo-presets button,.demo-reset{min-height:34px;padding:7px 11px;color:var(--demo-text);background:#34302c;border:1px solid var(--demo-border-strong);border-radius:8px;font:inherit;font-size:.42em;font-weight:650;line-height:1;cursor:pointer;transition:transform 140ms ease,border-color 140ms ease,background 140ms ease}.demo-presets button:hover,.demo-reset:hover{transform:translateY(-1px);color:#fff;background:#3b352e;border-color:rgba(255,165,0,.62)}
.demo-reset{align-self:flex-start;margin-top:14px;color:var(--demo-muted);background:transparent}
.demo-hook{max-width:900px;margin:0 auto .55em;color:var(--demo-text);font-size:.88em;font-weight:620;line-height:1.12;letter-spacing:-.018em}
.slide-figure{display:block;max-width:570px;margin:16px auto}.slide-figure svg{display:block;width:100%;height:auto;overflow:visible;border:1px solid rgba(214,193,166,.1);border-radius:12px;box-shadow:0 18px 42px rgba(0,0,0,.2)}.slide-figure-caption{margin-top:7px;color:var(--demo-muted);font-size:.42em;line-height:1.4}
.slide-layout{display:flex;align-items:center;gap:38px;width:min(980px,94%);margin:0 auto;text-align:left}.slide-layout .slide-figure{flex:0 0 min(42%,390px);margin:0}.slide-layout .slide-text{flex:1;min-width:0;color:var(--main-color);font-size:.52em;line-height:1.42}.slide-layout .slide-text strong{font-weight:700}.slide-points{margin:0!important;padding:0!important;list-style:none!important}.slide-points li{position:relative;margin:0 0 .72em;padding-left:1.15em}.slide-points li:last-child{margin-bottom:0}.slide-points li::before{position:absolute;left:0;color:var(--link-color);content:"•";font-weight:700}
@media(max-width:900px){.demo-layout{grid-template-columns:1fr;gap:12px;width:98%}.demo-panel{padding:13px 14px}.demo-panel canvas{max-height:38vh}.slide-layout{flex-direction:column;gap:14px;width:96%}.slide-layout .slide-figure{flex-basis:auto;width:min(72%,430px)}.demo-insight{width:92%;margin-top:10px}}
@media(prefers-reduced-motion:reduce){.demo-presets button,.demo-reset,.demo-controls input[type=range]::-webkit-slider-thumb{transition:none}}

/* Declarative two-slide concept explorers used by the expanded lecture demos. */
.concept-chain{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr) auto minmax(0,1fr);align-items:center;gap:10px;min-height:180px;padding:20px;background:var(--demo-bg);border:1px solid var(--demo-border);border-radius:12px}.concept-chain span{display:grid;place-items:center;min-height:72px;padding:10px;color:var(--demo-text);background:var(--demo-raised);border:1px solid var(--demo-border-strong);border-radius:10px;font-size:.42em;font-weight:680;line-height:1.3;text-align:center}.concept-chain span:first-child{border-color:rgba(224,122,95,.6)}.concept-chain span:last-child{border-color:rgba(168,184,117,.62)}.concept-chain b{color:var(--demo-accent);font-size:.72em}.concept-chart{display:block;width:100%;height:auto;background:var(--demo-bg);border:1px solid rgba(214,193,166,.08);border-radius:10px}.concept-grid{stroke:#3b3733;stroke-width:1}.concept-axis{stroke:#847b70;stroke-width:1.4}.concept-line{fill:none;stroke-width:4;stroke-linecap:round;stroke-linejoin:round}.concept-line-a{stroke:#ffa500}.concept-line-b{stroke:#e07a5f}.concept-cursor{stroke:#f7f4ef;stroke-width:1.5;stroke-dasharray:5 5;opacity:.72}.concept-point{stroke:#fff8ee;stroke-width:2}.concept-point-a{fill:#ffa500}.concept-point-b{fill:#e07a5f}.concept-tick,.concept-label{fill:var(--demo-muted);font:12px system-ui,sans-serif}.concept-label{font-weight:650}.concept-formula{margin-bottom:7px;color:var(--demo-accent);font-family:Georgia,"Times New Roman",serif;font-size:1.08em}.concept-caveat{margin-top:7px;color:var(--demo-faint);font-size:.86em;font-style:italic}.concept-axis-note{margin-top:7px;color:var(--demo-faint);font-size:.38em;text-align:center}
@media(max-width:760px){.concept-chain{grid-template-columns:1fr;min-height:0;padding:12px}.concept-chain b{transform:rotate(90deg)}.concept-chain span{min-height:44px}.concept-chart{max-height:38vh}}

/* ML-framed practice problems shared by the CSE 840 lecture demos. */
.practice-intro,.practice-problem{width:min(1080px,96%);margin:0 auto}
.practice-intro>p{max-width:820px;color:var(--demo-muted);font-size:.52em;line-height:1.5}
.practice-kicker{margin-bottom:.45em!important;color:var(--demo-accent)!important;font-size:.3em!important;font-weight:760;letter-spacing:.16em;text-transform:uppercase}
.practice-workflow{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;margin:28px auto 0}
.practice-workflow span{display:inline-flex;align-items:center;gap:8px;padding:9px 14px;color:var(--demo-muted);background:var(--demo-surface);border:1px solid var(--demo-border);border-radius:999px;font-size:.38em;font-weight:650}
.practice-workflow b{display:inline-block;box-sizing:border-box;flex:0 0 22px;width:22px;height:22px;margin:0;padding:0;color:var(--demo-bg);background:var(--demo-accent);border-radius:50%;font-size:.88em;font-variant-numeric:tabular-nums;line-height:22px;text-align:center}
.practice-card{width:min(1000px,94%);margin:0 auto;padding:24px 30px 22px;text-align:left;background:linear-gradient(145deg,rgba(49,46,43,.97),rgba(36,34,32,.99));border:1px solid var(--demo-border-strong);border-radius:var(--demo-radius);box-shadow:var(--demo-shadow)}
.practice-header{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:12px}
.practice-number,.practice-domain{font-size:.3em;font-weight:760;letter-spacing:.1em;text-transform:uppercase}
.practice-number{color:var(--demo-accent)}
.practice-domain{padding:5px 9px;color:var(--demo-amber);background:rgba(255,173,50,.08);border:1px solid rgba(255,173,50,.2);border-radius:999px}
.practice-card h2{margin:0 0 12px!important;font-size:.76em!important;line-height:1.16!important}
.practice-scenario{max-width:none!important;margin:0 0 14px!important;color:#e8e2da!important;font-size:.45em;line-height:1.48}
.practice-data{margin:12px 0 15px;padding:11px 14px;background:rgba(255,165,0,.055);border-left:3px solid var(--demo-accent);border-radius:7px}
.practice-data>span{display:block;margin-bottom:4px;color:var(--demo-accent);font-size:.27em;font-weight:760;letter-spacing:.1em;text-transform:uppercase}
.practice-data p{max-width:none!important;margin:0!important;color:var(--demo-muted)!important;font-size:.41em;line-height:1.42}
.practice-tasks{margin:12px 0 0;padding-left:1.25em;color:var(--demo-text);font-size:.42em;line-height:1.42}
.practice-tasks li{margin:.42em 0;padding-left:.25em}
.practice-tasks li::marker{color:var(--demo-green);font-weight:800}
.practice-thinking{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin:13px 0 0;padding:10px 0 0 1.35em;color:var(--demo-muted);border-top:1px solid var(--demo-border);font-size:.3em;font-weight:720;line-height:1.2;letter-spacing:.035em;text-transform:uppercase}
.practice-thinking li{margin:0;padding-left:.18em;white-space:nowrap}
.practice-thinking li::marker{color:var(--demo-green);font-weight:850;font-variant-numeric:tabular-nums}
.practice-reminder{max-width:none!important;margin:15px 0 0!important;padding-top:11px;color:var(--demo-faint)!important;border-top:1px solid var(--demo-border);font-size:.31em!important;font-style:italic;line-height:1.35!important}
@media(max-width:760px){.practice-card{padding:18px 19px}.practice-header{align-items:flex-start}.practice-workflow{gap:7px}.practice-workflow span{padding:7px 10px}.practice-card h2{font-size:.67em!important}.practice-scenario,.practice-tasks{font-size:.39em}.practice-thinking{gap:5px;font-size:.27em}}

/* AI-topic primer shown before each mathematical demo. */
.demo-context-slide{text-align:left}
.demo-example-label{margin:0 0 .25rem;color:var(--demo-green);font-size:.32em;font-weight:750;letter-spacing:.12em;line-height:1;text-transform:uppercase}
.demo-context-slide h2{margin-bottom:.55em;text-align:left}
.demo-context-slide h2.r-fit-text{display:block;width:100%}
.demo-context-columns{display:flex;align-items:stretch;gap:3%;width:100%;margin:0 auto}
.demo-context-slide #left,.demo-context-slide #right{z-index:auto;box-sizing:border-box;margin:0;font-size:1em;line-height:inherit}
.demo-context-slide #left{text-align:left}
.demo-context-slide #right{text-align:left}
.demo-context-columns>#left{display:flex;float:none}
.demo-context-columns>#right{float:none}
.demo-context-visual{display:grid;flex:1;width:100%;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr) auto minmax(0,1fr);gap:.45rem;align-items:center;min-height:225px;padding:1rem;border:1px solid var(--demo-border);border-radius:12px;background:var(--demo-bg)}
.demo-context-node{display:flex;min-height:118px;padding:.72rem .55rem;border:1px solid var(--demo-border-strong);border-radius:10px;background:var(--demo-raised);color:var(--demo-text);font-size:.42em;font-weight:650;line-height:1.25;text-align:center;align-items:center;justify-content:center;flex-direction:column;gap:.5rem}
.demo-context-node--focus{border-color:var(--demo-accent);box-shadow:inset 0 0 0 1px var(--demo-accent)}
.demo-context-node:nth-of-type(1){border-color:rgba(224,122,95,.62)}
.demo-context-node:nth-of-type(3){border-color:rgba(168,184,117,.68)}
.demo-context-icon{display:grid;width:2.2rem;height:2.2rem;border-radius:50%;background:var(--demo-accent);color:var(--demo-bg);font-size:1.45em;font-weight:800;place-items:center}
.demo-context-node:nth-of-type(1) .demo-context-icon{background:#e07a5f}
.demo-context-node:nth-of-type(3) .demo-context-icon{background:var(--demo-green)}
.demo-context-arrow{color:var(--demo-muted);font-size:1.15em;font-weight:800}
.demo-context-slide #right.demo-context-copy{display:flex;min-height:225px;padding:1rem;border:1px solid var(--demo-border);border-radius:12px;background:var(--demo-bg);font-size:.46em;line-height:1.28;flex-direction:column;justify-content:center}
.demo-context-copy p{max-width:none!important;margin:.45rem 0!important}
.demo-context-example{display:grid;gap:.2rem;margin-bottom:.55rem;padding:.55rem .68rem;border-left:4px solid #e07a5f;background:var(--demo-raised)}
.demo-context-example strong{color:var(--demo-muted);font-size:.8em;letter-spacing:.05em;text-transform:uppercase}
@media(max-width:760px){.demo-context-columns{gap:.6rem;flex-direction:column}.demo-context-slide #left,.demo-context-slide #right{float:none;width:100%!important}.demo-context-slide #right{margin-top:0}.demo-context-visual{min-height:0;padding:.65rem}.demo-context-slide #right.demo-context-copy{min-height:0;padding:.75rem}.demo-context-node{min-height:82px;padding:.45rem .3rem;font-size:.34em}.demo-context-icon{width:1.7rem;height:1.7rem}.demo-context-copy{font-size:.43em}}
.concept-formula sub,.concept-formula sup{font-size:.72em;line-height:0}
.concept-formula sub{vertical-align:-.28em}
.concept-formula sup{vertical-align:.48em}

/* Dense 2x2 matrix controls need a shorter rhythm to stay inside Reveal's 720px stage. */
.matrix-control-slide .demo-panel{padding:14px 18px}
.matrix-control-slide .demo-controls{justify-content:flex-start;gap:0}
.matrix-control-slide .demo-matrix-card{gap:10px;margin-bottom:6px;padding:9px 12px}
.matrix-control-slide .demo-matrix-symbol{font-size:.56em}
.matrix-control-slide .demo-matrix-values{gap:5px 11px;padding:4px 14px;font-size:.46em}
.matrix-control-slide .demo-controls label{margin:6px 0 3px;font-size:.43em;line-height:1.15}
.matrix-control-slide .demo-controls input[type=range]{height:18px;margin:0 0 1px}
.matrix-control-slide .demo-presets{gap:6px;margin-top:7px}
.matrix-control-slide .demo-presets button,
.matrix-control-slide .demo-reset{min-height:30px;padding:5px 9px;font-size:.39em}
.matrix-control-slide .demo-readout{margin-top:8px;padding:9px 12px;font-size:.43em;line-height:1.4}
.matrix-control-slide .demo-insight{margin:8px 0;padding:8px 34px;font-size:.41em;line-height:1.35}
.matrix-control-slide .demo-insight::before{left:12px;top:6px}
.matrix-control-slide .demo-reset{margin-top:6px}