/* Scoped subject diagrams: physical path, encapsulation, Rails MVC. */
.topic-figure{width:100%;margin:16px 0 0}.topic-figure figcaption{display:flex;justify-content:space-between;gap:10px 28px;margin-top:15px;font:11px/1.6 var(--mono);color:var(--muted)}.topic-figure figcaption>span{max-width:600px}.diagram-key{display:inline-flex;align-items:center;gap:8px;flex-shrink:0}.diagram-key i{width:17px;height:10px;display:inline-block;background:var(--signal);border:1px solid var(--ink)}
.cable-scene{height:240px;position:relative;background:radial-gradient(#a9bfc150 .7px,transparent .7px);background-size:18px 18px}.cable-landscape{position:absolute;bottom:0;left:0;width:100%;height:210px;overflow:visible}.cable-water{fill:#d7e9ec}.cable-ground{fill:#d4ded9}.cable-shore{fill:none;stroke:#9aaca7;stroke-width:1.5}.cable-fiber{fill:none;stroke:var(--cyan);stroke-width:4;stroke-linecap:round;stroke-linejoin:round}.cable-radio{fill:none;stroke:var(--cyan);stroke-width:2;stroke-dasharray:3 5}.cable-data{fill:var(--signal);stroke:var(--ink);stroke-width:1.5}.cable-wave{fill:none;stroke:#9ebfc5;stroke-width:2}.cable-building{fill:none;stroke:var(--ink);stroke-width:2;stroke-linejoin:round}.cable-label{position:absolute;font:11px/1.5 var(--mono);top:9px}.cable-label b{display:block;font:600 15px/1.5 var(--body)}.cable-label span{color:var(--muted)}.cable-laptop{left:2%}.cable-landing{left:22%}.cable-ocean{left:42%;top:auto;bottom:8px}.cable-destination{right:1%;text-align:right}.cable-ocean-word{position:absolute;top:129px;left:46%;font:10px var(--mono);letter-spacing:.18em;color:#608e96}
.packet-figure{max-width:1000px;margin-left:auto;margin-right:auto}.packet-wrap{border:1px solid #9eb6b9;padding:12px 17px;background:#dbe7e7}.packet-wrap .packet-wrap{margin:9px 0 0 40px;background:#e6efef}.packet-wrap .packet-wrap .packet-wrap{background:#f2f6f6}.packet-heading{display:flex;align-items:baseline;justify-content:space-between;gap:12px;font:11px/1.5 var(--mono)}.packet-heading b{font-size:13px;white-space:nowrap}.packet-heading span{color:var(--muted);text-align:right}.packet-content{display:flex;align-items:center;gap:15px;flex-wrap:wrap;margin:12px 0 0 40px;padding:14px 17px;border:1px solid var(--cyan);background:var(--white)}.packet-content>span{font:10px var(--mono);text-transform:uppercase;color:var(--muted)}.packet-content code{background:transparent}.packet-payload{background:var(--signal);padding:8px 12px;font:13px var(--mono);margin-left:auto}.packet-figure figcaption>span:first-child{flex-shrink:0}
.mvc-diagram{display:grid;grid-template-columns:minmax(280px,1fr) minmax(230px,1fr);grid-template-rows:auto auto auto;max-width:760px;margin:0 auto;align-items:center;column-gap:0}.mvc-input,.mvc-output,.mvc-controller,.mvc-model-box{display:flex;flex-direction:column;align-items:center;text-align:center;gap:6px}.mvc-input{grid-column:1;grid-row:1}.mvc-controller{grid-column:1;grid-row:2;border:2px solid var(--ink);background:var(--white);padding:15px 24px;position:relative}.mvc-controller:before{content:"";position:absolute;top:-2px;left:-2px;width:33px;height:4px;background:var(--signal)}.mvc-model{grid-column:2;grid-row:2;display:grid;grid-template-columns:80px 1fr;align-items:center}.mvc-model-box{border:1px solid var(--cyan);padding:14px;background:#e0ebeb}.mvc-connection{font:11px/1.9 var(--mono);text-align:center;color:var(--cyan)}.mvc-output{grid-column:1;grid-row:3}.mvc-step{font:9px/1.5 var(--mono);letter-spacing:.055em;text-transform:uppercase;color:var(--muted)}.mvc-diagram strong{font-size:18px;line-height:1.15}.mvc-diagram code{font:10px/1.5 var(--mono);background:transparent;padding:0}.mvc-controller>span:last-child{font:12px/1.5 var(--body);color:var(--muted)}.mvc-arrow{font:22px/1.05 var(--mono);color:var(--cyan)}.mvc-db-link{font:10px/1.5 var(--mono);color:var(--muted);margin-top:4px}.mvc-database{border:1px solid var(--ink);border-radius:50% / 15%;padding:9px 20px;font:12px var(--mono);background:var(--white)}.mvc-response{font:13px var(--mono);padding:10px 15px;background:var(--ink);color:var(--white)}.mvc-response span{color:var(--signal);font-size:11px}.mvc-figure figcaption{justify-content:center;text-align:center}
@media(max-width:800px){.topic-figure figcaption{font-size:10px;flex-wrap:wrap}.cable-label b{font-size:12px}.cable-label{font-size:9px}.cable-landing{left:23%}.cable-ocean{left:42%}.mvc-diagram{grid-template-columns:minmax(190px,1fr) minmax(190px,1fr)}.mvc-model{grid-template-columns:65px 1fr}.mvc-controller{padding:12px}.mvc-model-box{padding:12px}.mvc-diagram code{font-size:9px}}
@media(max-width:480px){.topic-figure{margin-top:8px}.cable-scene{height:245px}.cable-landscape{height:150px;bottom:28px}.cable-label{max-width:43%;font-size:9px}.cable-label b{font-size:12px}.cable-laptop{left:0;top:3px}.cable-landing{left:auto;right:0;top:3px;text-align:right}.cable-destination{right:0;top:49px}.cable-ocean{left:31%;bottom:0;text-align:center;max-width:65%}.cable-ocean-word{top:142px;left:41%;font-size:8px}.packet-wrap{padding:9px}.packet-wrap .packet-wrap{margin:9px 0 0 10px}.packet-heading{align-items:flex-start;gap:8px}.packet-heading b{font-size:11px}.packet-heading span{font-size:9px;max-width:125px}.packet-content{margin:10px 0 0 10px;padding:10px;gap:10px}.packet-content>span{width:100%;font-size:9px}.packet-content code{font-size:11px}.packet-payload{font-size:11px;padding:8px;margin-left:0}.packet-figure figcaption{display:block}.packet-figure figcaption>span{display:block;margin-top:5px}.mvc-diagram{grid-template-columns:minmax(0,1fr) minmax(0,1fr);column-gap:10px}.mvc-model{display:flex;flex-direction:column;gap:6px}.mvc-connection{font-size:9px;line-height:1.4}.mvc-controller{padding:12px 7px}.mvc-model-box{padding:11px 8px;width:100%}.mvc-diagram strong{font-size:15px}.mvc-diagram code{font-size:8px;overflow-wrap:anywhere}.mvc-controller>span:last-child{font-size:11px}.mvc-step{font-size:8px;letter-spacing:0}.mvc-response{font-size:11px;padding:10px 9px;display:flex;flex-direction:column;gap:5px}.mvc-response span{font-size:10px}.mvc-database{font-size:10px;padding:9px 13px}.mvc-figure figcaption{text-align:left}}
@media(min-width:801px) and (max-height:850px){.mvc-diagram{grid-template-columns:minmax(260px,1fr) minmax(260px,1fr);max-width:760px}.mvc-input,.mvc-output{gap:3px}.mvc-input strong,.mvc-output strong{font-size:16px}.mvc-controller{padding:10px 18px}.mvc-arrow{font-size:18px}.mvc-response{padding:7px 12px}.mvc-figure figcaption{margin-top:10px}.cable-scene{height:210px}.cable-landscape{height:175px}.cable-ocean-word{top:118px}}

/* Keep the whole MVC relationship within a single exhibit on desktop. */
@media(min-width:801px){.mvc-input,.mvc-output{gap:3px}.mvc-input{padding-bottom:3px}.mvc-controller{padding:10px 18px}.mvc-controller>span:last-child{font-size:11px}.mvc-model-box{padding:9px 15px}.mvc-diagram strong{font-size:17px}.mvc-step{font-size:8px}.mvc-arrow{font-size:18px}.mvc-response{padding:7px 12px}.mvc-figure figcaption{margin-top:10px}}

.mvc-step,.mvc-connection,.mvc-db-link,.mvc-diagram code{font-size:12px;letter-spacing:0}.mvc-controller>span:last-child{font-size:12px}.mvc-storage-row{display:flex;align-items:center;justify-content:center;gap:9px}.mvc-db-link{line-height:1.3;margin:0}.mvc-database{font-size:12px;padding:8px 12px}.mvc-response span{font-size:12px}.mvc-input,.mvc-output{gap:3px}.mvc-model-box{gap:5px}.mvc-diagram{max-width:820px}.mvc-figure figcaption{font-size:11px}
@media(max-width:480px){.mvc-step{font-size:11px}.mvc-connection,.mvc-db-link,.mvc-diagram code{font-size:11px}.mvc-storage-row{flex-direction:column;gap:5px}.mvc-diagram strong{font-size:15px}.mvc-controller>span:last-child{font-size:12px}.mvc-response{font-size:12px}.mvc-figure figcaption{font-size:11px}}