/* The models lead. Fine drafting lines, readable panels and source status stay in context. */
.library-room{padding-top:15px;scroll-margin-top:25px}.library-room .section-heading{align-items:end}.library-room .section-heading h2{font-size:clamp(38px,4.3vw,64px)}.library-room .section-heading h2 span{color:var(--orange)}
.sample-project{display:flex;align-items:center;gap:20px;padding:23px 27px;border:1px solid var(--line);border-radius:12px;background:var(--surface);margin-bottom:22px}.project-symbol{width:52px;height:52px;border-radius:12px;background:var(--soft);border:1px solid var(--orange);display:grid;place-items:center;font-size:30px;color:var(--orange);flex-shrink:0}.sample-project>div:nth-child(2){flex:1;min-width:0}.sample-project label{display:block;font-size:12px;color:var(--muted);margin-bottom:6px}.sample-project input{display:block;max-width:420px;width:100%;font-size:21px;font-weight:600;letter-spacing:-.02em;padding:5px 0;border:none;border-radius:0;background:transparent!important;color:var(--text)}.sample-project p{font-size:12px;margin-top:7px}.sample-project .status-badge{white-space:nowrap}
.study-filters{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:18px}.study-filter{padding:11px 16px;border:1px solid var(--line);color:var(--muted);background:var(--panel);font-size:14px;border-radius:25px}.study-filter[aria-pressed=true]{background:var(--orange);color:var(--accent-ink);border-color:var(--orange)}
.library-workspace{display:grid;grid-template-columns:330px minmax(0,1fr);border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--panel);box-shadow:0 18px 65px #0002}.library-browser{padding:22px 14px 14px;border-right:1px solid var(--line);background:var(--well);min-width:0}.library-browser>label{font-size:13px;display:block;padding:0 6px 10px}.library-browser>input{width:calc(100% - 12px);margin:0 6px;font-size:14px;padding:12px}.library-browser>p{font:12px Consolas,monospace;padding:14px 6px;color:var(--orange)}
.study-gallery{height:915px;overflow-y:auto;display:grid;grid-template-columns:1fr 1fr;gap:11px;align-content:start;padding:2px 6px 14px;scrollbar-color:var(--line) transparent}.study-card{display:block;width:100%;min-width:0;text-align:left;padding:0;border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:9px;overflow:hidden;transition:border-color .2s,transform .2s}.study-card:hover{transform:translateY(-2px);border-color:var(--orange);filter:none}.study-card[aria-pressed=true]{border-color:var(--orange);box-shadow:0 0 0 1px var(--orange)}.study-card img{display:block;width:100%;height:115px;object-fit:contain;background:radial-gradient(ellipse at 50% 65%,var(--raised),var(--panel));color:transparent;font-size:0}.study-card img:not([src]){background:linear-gradient(120deg,var(--surface),var(--raised),var(--surface));min-height:115px}.study-card>span{display:block;padding:11px 10px 13px}.study-card small{display:block;font:10px Consolas,monospace;color:var(--orange);letter-spacing:.05em;margin-bottom:7px}.study-card strong{display:block;font-size:13px;line-height:1.35;font-weight:600}.study-card em{display:block;font-size:10px;color:var(--muted);font-style:normal;line-height:1.5;margin-top:6px}.library-inspector{min-width:0;background:var(--panel)}.library-model-heading{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:26px 27px 18px}.library-model-heading h3{font-size:33px;margin:9px 0}.library-model-heading p:not(.eyebrow){font-size:13px}.library-model-heading .status-badge{font-size:10px;white-space:nowrap}.study-switch{display:flex;align-items:center;gap:15px;padding:0 27px 18px;font-size:12px;color:var(--muted)}.study-switch select{flex:1;min-width:0;font-size:13px;padding:9px 12px;border:1px solid var(--line);border-radius:5px}
.study-stage{position:relative;background:radial-gradient(ellipse at 50% 50%,var(--surface),var(--well));border-block:1px solid var(--line)}.study-stage:before{content:'';position:absolute;inset:0;background:linear-gradient(90deg,transparent calc(50% - .5px),var(--line) 50%,transparent calc(50% + .5px)),linear-gradient(transparent calc(50% - .5px),var(--line) 50%,transparent calc(50% + .5px));opacity:.2;pointer-events:none}.study-canvas{height:550px;width:100%;touch-action:none;position:relative;z-index:1}.study-canvas canvas{display:block;width:100%;height:100%}.study-stage-caption,.study-axis{position:absolute;bottom:18px;font:10px Consolas,monospace;letter-spacing:.08em;color:var(--muted);z-index:2;pointer-events:none}.study-stage-caption{left:25px}.study-axis{right:25px;color:var(--orange)}.study-toolbar{display:flex;flex-wrap:wrap;gap:10px;align-items:center;padding:18px 25px;border-bottom:1px solid var(--line);background:var(--surface)}.study-toolbar label{display:flex;align-items:center;gap:8px;font-size:13px;margin-left:5px}.study-toolbar input{accent-color:var(--orange);width:16px;height:16px}.library-spread{display:flex;align-items:center;gap:18px;padding:19px 26px;font-size:14px;background:var(--surface);border-bottom:1px solid var(--line)}.library-spread input{flex:1;min-width:45px}.library-spread output{font:12px Consolas,monospace;color:var(--orange);min-width:32px;text-align:right}.study-part-panel{padding:24px 26px;display:grid;grid-template-columns:1fr 1fr;gap:25px;border-bottom:1px solid var(--line)}.study-part-panel label{display:block;font-size:17px;margin:10px 0}.study-part-panel select{width:100%;min-width:0;padding:11px;font-size:13px;border:1px solid var(--line);border-radius:6px}.study-part-panel>p{font-size:13px;line-height:1.8;align-self:center;overflow-wrap:anywhere}.study-source-limits{margin:0 26px;padding:20px 0;border-bottom:1px solid var(--line)}.study-source-limits summary{cursor:pointer;font-size:14px;color:var(--text);line-height:1.6}.study-source-limits summary span{font:9px Consolas,monospace;color:var(--orange);float:right;margin-top:4px}.study-source-limits p,.study-source-limits li{font-size:13px;line-height:1.75;color:var(--muted)}.study-source-limits p{margin-top:17px}.study-source-limits ul{padding-left:20px}.study-source-limits li+li{margin-top:10px}.library-warning{padding:19px 26px 23px;font-size:12px;line-height:1.8}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.optional-worksheet{border-top:1px solid var(--line)}.optional-worksheet>summary{padding:22px 27px;background:var(--surface);color:var(--muted);font-size:14px;cursor:pointer}.optional-worksheet .assembly-costs{border-top:1px solid var(--line)}
.construction-calculator{padding-bottom:85px;padding-top:50px}.calculator-shell{display:grid;grid-template-columns:1.1fr 1fr;border:1px solid var(--line);border-radius:13px;overflow:hidden;background:var(--surface)}.calculator-inputs{padding:32px;min-width:0}.calculator-inputs>label:first-of-type{display:block;margin:20px 0}.calculator-inputs label{font-size:13px;color:var(--muted);line-height:1.55}.calculator-inputs input:not([type=checkbox]),.calculator-inputs select{display:block;width:100%;padding:11px 12px;margin-top:8px;font-size:15px;border:1px solid var(--line);border-radius:6px;min-width:0}.calc-input-grid{display:grid;grid-template-columns:1fr 1fr;gap:19px 18px}.calc-check{display:flex;gap:10px;align-items:start;margin:21px 0}.calc-check input{margin-top:4px;accent-color:var(--orange)}.reinforcement-inputs{border-block:1px solid var(--line);padding:18px 0}.reinforcement-inputs summary{cursor:pointer;color:var(--text);font-size:16px}.reinforcement-inputs p{font-size:13px;margin:16px 0 20px}.calculator-output{background:var(--well);border-left:1px solid var(--line);padding:30px;min-width:0}.calc-quantity strong{display:block;font-size:67px;font-weight:600;line-height:1.1;letter-spacing:-.05em;color:var(--orange)}.calc-quantity span{display:block;font-size:14px;color:var(--muted);margin-top:10px}#calc-equation{font:12px Consolas,monospace;color:var(--text);line-height:1.8;margin-top:20px;min-height:44px}#calc-section{width:100%;max-width:420px;display:block;margin:10px auto}.calc-concrete{fill:var(--raised);stroke:var(--muted);stroke-width:1.5}.calc-slab-band{fill:var(--soft);stroke:var(--orange);stroke-dasharray:4 3}.calc-steel{fill:var(--orange)}.calc-dim{font:13px Consolas,monospace;fill:var(--text)}.calc-diagram-note{font:10px 'Segoe UI',sans-serif;fill:var(--muted)}#calc-profile-note{font-size:14px;border-left:2px solid var(--orange);padding-left:15px;margin-bottom:23px}.calculator-output dl{margin:0 0 25px}.calculator-output dl>div{display:flex;justify-content:space-between;gap:18px;border-bottom:1px solid var(--line);padding:12px 0;font-size:13px;line-height:1.5}.calculator-output dt{color:var(--muted)}.calculator-output dd{margin:0;text-align:right;color:var(--text);max-width:55%}.calculator-output>.small-note{font-size:12px}.hero-visual{box-shadow:0 22px 70px #0003}.room-card{box-shadow:0 13px 35px #0001}.hero-visual .hero-callout{backdrop-filter:blur(6px)}
@media(max-width:1200px){.library-workspace{grid-template-columns:280px minmax(0,1fr)}.study-gallery{gap:8px}.study-card img{height:100px}.library-model-heading{padding:22px}.library-model-heading h3{font-size:29px}.library-model-heading .status-badge{display:none}.sample-project .status-badge{font-size:9px}.study-canvas{height:500px}}
@media(max-width:850px){.library-workspace{grid-template-columns:1fr}.library-browser{border-right:0;border-bottom:1px solid var(--line)}.study-gallery{height:265px;grid-template-columns:repeat(4,minmax(0,1fr));overflow-y:auto}.study-card img{height:110px}.library-browser>input{max-width:450px}.study-canvas{height:510px}.sample-project .status-badge{display:none}.calculator-shell{grid-template-columns:1fr}.calculator-output{border-left:0;border-top:1px solid var(--line)}.study-part-panel{gap:20px}.library-spread{gap:13px}.library-room .section-heading{display:block}.library-room .section-heading>p{margin-top:22px;max-width:600px}}
@media(max-width:600px){.sample-project{padding:18px;gap:13px}.project-symbol{width:38px;height:42px;font-size:23px}.sample-project input{font-size:19px}.sample-project p{font-size:11px}.study-filters{gap:6px}.study-filter{font-size:12px;padding:10px 12px}.study-gallery{grid-template-columns:repeat(3,minmax(0,1fr));height:240px}.study-card img{height:95px}.study-card>span{padding:9px 7px 12px}.study-card strong{font-size:11px}.study-card small,.study-card em{font-size:9px}.library-browser{padding:17px 10px}.library-model-heading{padding:22px 18px 14px}.library-model-heading h3{font-size:29px}.study-switch{padding:0 18px 17px;gap:10px;font-size:11px}.study-switch select{font-size:12px;padding:10px}.study-canvas{height:420px}.study-stage-caption{left:18px;font-size:9px}.study-axis{right:18px}.study-toolbar{gap:8px;padding:17px}.study-toolbar .btn.small{font-size:11px;padding:10px}.study-toolbar label{font-size:12px;margin-top:7px}.library-spread{padding:19px 18px;gap:10px;font-size:12px}.library-spread>span{max-width:95px;line-height:1.5}.study-part-panel{grid-template-columns:1fr;padding:22px 18px;gap:15px}.study-part-panel>p{font-size:13px}.study-source-limits{margin:0 18px}.study-source-limits summary{font-size:13px}.study-source-limits summary span{float:none;display:block}.library-warning{padding:18px;font-size:12px}.calculator-inputs,.calculator-output{padding:24px}.calc-input-grid{gap:15px 13px}.calculator-inputs label{font-size:12px}.calculator-inputs input:not([type=checkbox]),.calculator-inputs select{font-size:14px;padding:11px}.calculator-output dl>div{font-size:12px}.calculator-output>.small-note{font-size:12px}.calc-quantity strong{font-size:58px}.construction-calculator{padding-top:35px;padding-bottom:55px}.library-room .section-heading h2{font-size:39px}}

.teaching-station{padding:18px 23px;background:var(--surface);border-top:1px solid var(--line)}.teaching-station summary{font-size:15px;color:var(--orange);cursor:pointer}.teaching-station>div{padding-top:20px}.teaching-station h4{margin:12px 0 15px}.teaching-station p,.teaching-station li{font-size:13px;line-height:1.75}.teaching-station label{display:block;font-size:13px;margin:20px 0 14px}.teaching-station input{display:block;margin-top:8px;padding:11px;width:100%}.teaching-station #teaching-status{color:var(--orange);margin-top:15px}.teaching-station #teaching-count{margin-top:18px}.teaching-station .small-note{margin-top:20px;font-size:12px}

/* Explicit intrinsic rows keep scrollable model cards from shrinking to fit the whole catalog. */
.study-gallery{grid-auto-rows:max-content}.study-card{min-height:205px}@media(max-width:1200px){.study-card{min-height:190px}}@media(max-width:600px){.study-card{min-height:172px}}