/* Configurable buildings (Agent C): the properties panel (bldg-*, building-ui.js) and the building wizard (bw-*, building-wizard.js).
   Only bldg-* and bw-* selectors live here. Dark is the default; body.theme-light overrides the tokens; the new UI drawer maps them to --l-*. */

/* ---------------------------------------------------------------- panel tokens */
.bldg-root{--bldg-surface:#1e293b;--bldg-surface2:#0f172a;--bldg-border:#334155;--bldg-text:#e2e8f0;--bldg-muted:#94a3b8;--bldg-accent:#22d3ee;--bldg-accent-ink:#06222b;
  --bldg-warn:#fbbf24;--bldg-error:#f87171;--bldg-ok:#34d399;--bldg-radius:10px;--bldg-tap:32px;
  container-type:inline-size;display:flex;flex-direction:column;gap:10px;color:var(--bldg-text);font-size:13px;line-height:1.4;min-width:0}
body.theme-light .bldg-root{--bldg-surface:#ffffff;--bldg-surface2:#f1f5f9;--bldg-border:#cbd5e1;--bldg-text:#0f172a;--bldg-muted:#475569;--bldg-accent:#0e7490;--bldg-accent-ink:#ffffff;
  --bldg-warn:#b45309;--bldg-error:#b91c1c;--bldg-ok:#047857}
.lyt-new-ui .bldg-root,body.theme-light .lyt-new-ui .bldg-root{--bldg-surface:var(--l-surface2,#16233d);--bldg-surface2:var(--l-surface,#121d33);--bldg-border:var(--l-border,#27344f);
  --bldg-text:var(--l-text,#e8edf5);--bldg-muted:var(--l-muted,#9aa7bd);--bldg-accent:var(--l-accent,#10b981);--bldg-accent-ink:var(--l-accent-ink,#06281d)}
.bldg-root *,.bldg-root *::before,.bldg-root *::after{box-sizing:border-box}
.bldg-root [hidden]{display:none!important}
.bldg-root :where(button,input,select,textarea){font:inherit;color:inherit}
.bldg-root :focus-visible{outline:2px solid var(--bldg-accent);outline-offset:2px}

/* ---------------------------------------------------------------- header card */
.bldg-card{position:relative;display:flex;flex-direction:column;gap:4px;padding:10px;border:1px solid var(--bldg-border);border-radius:var(--bldg-radius);background:var(--bldg-surface)}
.bldg-thumb{color:var(--bldg-muted);display:flex;justify-content:center}.bldg-thumb svg{width:100%;height:auto;max-height:130px}
.bldg-card-title{margin:2px 0 0;font-weight:700;font-size:14px;overflow-wrap:anywhere}
.bldg-card-line{margin:0;color:var(--bldg-muted);font-size:12px;overflow-wrap:anywhere}
.bldg-issue-chip{position:absolute;top:8px;right:8px;min-height:24px;padding:2px 9px;border-radius:999px;border:1px solid currentColor;background:var(--bldg-surface2);font-size:11px;font-weight:700;cursor:pointer}
.bldg-issue-chip[data-sev=error]{color:var(--bldg-error)}.bldg-issue-chip[data-sev=warn]{color:var(--bldg-warn)}
.bldg-head-actions{display:flex;flex-direction:column;gap:6px}

/* ---------------------------------------------------------------- buttons */
.bldg-btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:var(--bldg-tap);padding:5px 11px;border:1px solid var(--bldg-border);border-radius:8px;background:var(--bldg-surface2);color:var(--bldg-text);font-weight:600;font-size:12px;cursor:pointer;text-align:center}
.bldg-btn:hover{border-color:var(--bldg-accent)}
.bldg-btn[aria-disabled=true]{opacity:.5;cursor:not-allowed}
.bldg-primary{background:var(--bldg-accent);border-color:var(--bldg-accent);color:var(--bldg-accent-ink)}
.bldg-block{width:100%}
.bldg-link{background:transparent;border-color:transparent;color:var(--bldg-accent);text-decoration:underline;padding-inline:4px}
.bldg-add{align-self:flex-start;margin-top:4px}
.bldg-add-wrap{align-self:flex-start}
.bldg-btn-row{display:flex;flex-wrap:wrap;gap:6px;margin-top:6px}
.bldg-icon-btn{display:inline-grid;place-items:center;width:var(--bldg-tap);height:var(--bldg-tap);border:1px solid transparent;border-radius:8px;background:transparent;color:var(--bldg-muted);cursor:pointer}
.bldg-icon-btn:hover,.bldg-icon-btn[aria-expanded=true]{border-color:var(--bldg-border);color:var(--bldg-text)}

/* ---------------------------------------------------------------- sections */
.bldg-sec{border:1px solid var(--bldg-border);border-radius:var(--bldg-radius);background:var(--bldg-surface);overflow:visible}
.bldg-sec-head{display:flex;align-items:baseline;justify-content:space-between;gap:8px;min-height:36px;padding:8px 10px;cursor:pointer;list-style:none;border-radius:var(--bldg-radius)}
.bldg-sec-head::-webkit-details-marker{display:none}
.bldg-sec-head::before{content:"";flex:none;width:7px;height:7px;margin-right:2px;border-right:2px solid var(--bldg-muted);border-bottom:2px solid var(--bldg-muted);transform:translateY(-2px) rotate(-45deg);transition:transform .15s}
.bldg-sec[open]>.bldg-sec-head::before{transform:translateY(-3px) rotate(45deg)}
.bldg-sec-title{flex:1;font-weight:700;font-size:13px}
.bldg-sec-meta{flex:0 1 auto;min-width:0;color:var(--bldg-muted);font-size:11px;text-align:right;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:55%}
.bldg-sec-body{display:flex;flex-direction:column;gap:9px;padding:4px 10px 12px;min-width:0}
.bldg-sec-body>.space-y-2,.bldg-sec-body>div:not([class]){margin:0}
.bldg-sub{margin:6px 0 0;font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--bldg-muted)}

/* ---------------------------------------------------------------- fields */
.bldg-field{display:flex;flex-direction:column;gap:4px;min-width:0}
.bldg-label{display:flex;align-items:center;gap:6px;font-size:12px;font-weight:600;color:var(--bldg-muted)}
.bldg-label-row{display:flex;align-items:center;justify-content:space-between;gap:6px}
.bldg-val{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;color:var(--bldg-accent);white-space:nowrap}
.bldg-auto-badge{padding:0 6px;border-radius:999px;background:var(--bldg-surface2);border:1px solid var(--bldg-border);color:var(--bldg-accent);font-size:10px;font-weight:700;letter-spacing:.03em}
.bldg-auto{flex:none;min-height:26px;padding:2px 8px;border:1px dashed var(--bldg-border);border-radius:7px;background:transparent;color:var(--bldg-accent);font-size:11px;font-weight:700;cursor:pointer}
.bldg-ctl{display:flex;align-items:center;gap:6px;min-width:0}
.bldg-num,.bldg-select,.bldg-text,.bldg-textarea{width:100%;min-width:0;min-height:var(--bldg-tap);padding:5px 8px;border:1px solid var(--bldg-border);border-radius:7px;background:var(--bldg-surface2);color:var(--bldg-text)}
.bldg-textarea{resize:vertical;min-height:64px}
.bldg-num::placeholder,.bldg-text::placeholder{color:var(--bldg-muted)}
.bldg-unit{flex:none;color:var(--bldg-muted);font-size:11px}
.bldg-range{width:100%;accent-color:var(--bldg-accent)}
.bldg-hint{margin:0;color:var(--bldg-muted);font-size:11px}
.bldg-readonly{margin:0;font-weight:600}
.bldg-grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 10px}
@container (max-width:280px){.bldg-grid2{grid-template-columns:minmax(0,1fr)}}

/* switches (checkbox role=switch) */
.bldg-toggle{position:relative;display:flex;align-items:center;gap:8px;min-height:28px;cursor:pointer;font-size:12px}
.bldg-check{position:absolute;opacity:0;width:34px;height:20px;margin:0;cursor:pointer}
.bldg-switch{flex:none;position:relative;width:34px;height:20px;border-radius:999px;background:var(--bldg-surface2);border:1px solid var(--bldg-border);transition:background .15s}
.bldg-switch::after{content:"";position:absolute;top:2px;left:2px;width:14px;height:14px;border-radius:50%;background:var(--bldg-muted);transition:transform .15s,background .15s}
.bldg-check:checked+.bldg-switch{background:var(--bldg-accent);border-color:var(--bldg-accent)}
.bldg-check:checked+.bldg-switch::after{transform:translateX(14px);background:var(--bldg-accent-ink)}
.bldg-check:focus-visible+.bldg-switch{outline:2px solid var(--bldg-accent);outline-offset:2px}
.bldg-check:disabled+.bldg-switch{opacity:.5}
.bldg-toggle-text{min-width:0;overflow-wrap:anywhere}

/* radio groups: segmented, cards, swatches */
.bldg-seg{display:flex;flex-wrap:wrap;gap:4px}
.bldg-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(82px,1fr));gap:6px}
.bldg-swatches{display:flex;flex-wrap:wrap;align-items:center;gap:4px}
.bldg-radio{display:inline-flex;align-items:center;justify-content:center;gap:5px;min-height:28px;padding:4px 9px;border:1px solid var(--bldg-border);border-radius:7px;background:var(--bldg-surface2);color:var(--bldg-text);font-size:12px;cursor:pointer;text-align:center}
.bldg-radio:hover{border-color:var(--bldg-accent)}
.bldg-radio[aria-checked=true]{border-color:var(--bldg-accent);background:color-mix(in srgb,var(--bldg-accent) 18%,var(--bldg-surface2));font-weight:700}
.bldg-radio[aria-disabled=true]{opacity:.45;cursor:not-allowed}
.bldg-cards .bldg-radio{flex-direction:column;padding:6px 4px;min-height:56px;font-size:11px}
.bldg-radio-icon{display:grid;place-items:center;color:var(--bldg-muted)}
.bldg-radio[aria-checked=true] .bldg-radio-icon{color:var(--bldg-accent)}
.bldg-radio-text{overflow-wrap:anywhere}
.bldg-swatches .bldg-radio{width:24px;height:24px;min-height:0;padding:0;border-radius:6px;border-width:2px}
.bldg-swatch-dot{display:block;width:100%;height:100%;border-radius:3px;box-shadow:inset 0 0 0 1px #0002}
.bldg-swatches .bldg-radio[aria-checked=true]{outline:2px solid var(--bldg-accent);outline-offset:1px}
.bldg-color{width:24px;height:24px;padding:0;border:1px dashed var(--bldg-border);border-radius:6px;background:transparent;cursor:pointer}
.bldg-chips{display:flex;flex-wrap:wrap;gap:5px}
.bldg-chip,.bldg-chip-s{display:inline-flex;align-items:center;gap:5px;border:1px solid var(--bldg-border);border-radius:999px;background:var(--bldg-surface2);color:var(--bldg-text)}
.bldg-chip{min-height:28px;padding:3px 9px 3px 5px;font-size:11px;cursor:pointer}
.bldg-chip[aria-pressed=true]{border-color:var(--bldg-accent);font-weight:700}
.bldg-chip-dots{display:inline-flex}.bldg-chip-dots i{width:10px;height:10px;border-radius:50%;margin-right:-2px;border:1px solid #0003}
.bldg-chip-s{flex:none;padding:0 6px;font-size:10px;font-weight:700;color:var(--bldg-accent)}

/* info lines, computed values */
.bldg-info{margin:0;padding:6px 8px;border-left:3px solid var(--bldg-border);border-radius:0 6px 6px 0;background:var(--bldg-surface2);color:var(--bldg-muted);font-size:11px}
.bldg-info[data-sev=warn]{border-left-color:var(--bldg-warn);color:var(--bldg-text)}
.bldg-info[data-sev=error]{border-left-color:var(--bldg-error);color:var(--bldg-text)}
.bldg-computed{display:flex;flex-direction:column;gap:4px}
.bldg-computed .bldg-info{border-left-color:var(--bldg-accent);color:var(--bldg-text)}
.bldg-empty{margin:0;color:var(--bldg-muted);font-size:12px}
.bldg-ph{color:var(--bldg-muted)}

/* ---------------------------------------------------------------- list rows */
.bldg-list{display:flex;flex-direction:column;gap:6px}
.bldg-row{border:1px solid var(--bldg-border);border-radius:9px;background:var(--bldg-surface2);min-width:0}
.bldg-row-main{display:flex;align-items:center;gap:2px;min-width:0}
.bldg-row-btn{flex:1;display:flex;align-items:center;gap:6px;min-width:0;min-height:36px;padding:5px 8px;border:0;border-radius:9px;background:transparent;color:var(--bldg-text);text-align:left;cursor:pointer;font-size:12px}
.bldg-row-icon{flex:none;display:grid;place-items:center;color:var(--bldg-muted)}
.bldg-row-text{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.bldg-chev{flex:none;width:7px;height:7px;border-right:2px solid var(--bldg-muted);border-bottom:2px solid var(--bldg-muted);transform:rotate(45deg);margin:0 4px 3px;transition:transform .15s}
.bldg-row-btn[aria-expanded=true] .bldg-chev{transform:rotate(-135deg);margin-bottom:-3px}
.bldg-row-actions{flex:none;position:relative}
.bldg-row-body{display:flex;flex-direction:column;gap:9px;padding:6px 9px 10px;border-top:1px solid var(--bldg-border)}
.bldg-row-body .bldg-row{background:var(--bldg-surface)}
.bldg-zone{display:flex;flex-direction:column;gap:6px;padding:8px}
.bldg-zone-name{margin:0;font-weight:600;font-size:12px}

/* ---------------------------------------------------------------- menus */
.bldg-menu-wrap{position:relative}
.bldg-menu{position:absolute;z-index:40;top:calc(100% + 4px);right:0;min-width:200px;max-width:min(280px,90vw);max-height:60vh;overflow:auto;padding:5px;border:1px solid var(--bldg-border);border-radius:10px;background:var(--bldg-surface);box-shadow:0 10px 30px #0006}
.bldg-add-wrap .bldg-menu{left:0;right:auto}
.bldg-menu-grp{display:flex;flex-direction:column}
.bldg-menu-group{padding:6px 8px 3px;font-size:10px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--bldg-muted)}
.bldg-menuitem{display:block;width:100%;min-height:32px;padding:6px 9px;border:0;border-radius:7px;background:transparent;color:var(--bldg-text);text-align:left;font-size:12px;cursor:pointer}
.bldg-menuitem:hover,.bldg-menuitem:focus{background:var(--bldg-surface2);outline:none}
.bldg-menuitem:focus-visible{outline:2px solid var(--bldg-accent);outline-offset:-2px}
.bldg-menuitem[aria-disabled=true]{opacity:.45;cursor:not-allowed}
.bldg-danger{color:var(--bldg-error)}

/* ---------------------------------------------------------------- windows auto-place, confirms, issues */
.bldg-auto-place{display:flex;flex-direction:column;gap:8px;padding:9px;border:1px dashed var(--bldg-border);border-radius:9px}
.bldg-confirm{display:flex;flex-direction:column;gap:6px;padding:9px;border:1px solid var(--bldg-warn);border-radius:9px;background:var(--bldg-surface2)}
.bldg-confirm p{margin:0;font-weight:600}
.bldg-confirm-actions{display:flex;flex-wrap:wrap;gap:6px}
.bldg-issues{display:flex;flex-direction:column;gap:5px;margin:0;padding:0;list-style:none}
.bldg-issue{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px;padding:6px 8px;border-left:3px solid var(--bldg-border);border-radius:0 6px 6px 0;background:var(--bldg-surface2);font-size:12px}
.bldg-issue[data-sev=error]{border-left-color:var(--bldg-error)}.bldg-issue[data-sev=warn]{border-left-color:var(--bldg-warn)}.bldg-issue[data-sev=ok]{border-left-color:var(--bldg-ok);color:var(--bldg-muted)}
.bldg-issue-sev{font-weight:700}.bldg-issue[data-sev=error] .bldg-issue-sev{color:var(--bldg-error)}.bldg-issue[data-sev=warn] .bldg-issue-sev{color:var(--bldg-warn)}
.bldg-issue-msg{flex:1 1 160px;min-width:0}
.bldg-issue .bldg-btn{min-height:24px;padding:0 6px}

/* ---------------------------------------------------------------- panel on phones (spec 4.4): 44 px targets, 32 px swatches */
@media (max-width:767px){
  .bldg-root{--bldg-tap:44px;font-size:14px}
  .bldg-grid2{grid-template-columns:minmax(0,1fr)}
  .bldg-sec-head,.bldg-row-btn,.bldg-menuitem,.bldg-radio,.bldg-toggle,.bldg-chip,.bldg-auto,.bldg-issue .bldg-btn{min-height:44px}
  .bldg-swatches{gap:6px}.bldg-swatches .bldg-radio,.bldg-color{width:32px;height:32px;min-height:32px}
  .bldg-num,.bldg-select,.bldg-text,.bldg-textarea{font-size:16px}
}
@media (prefers-reduced-motion:reduce){.bldg-root *{transition:none!important}}

/* ---------------------------------------------------------------- wizard tokens (copied from --qs-*) */
.bw-shell{--bw-bg:#172330;--bw-panel:#101c28;--bw-border:#354650;--bw-text:#eef4f5;--bw-muted:#aabdc5;--bw-accent:#8bd1ba;--bw-accent-ink:#0b1f19;--bw-warn:#f2c46d;--bw-error:#ff9a8f;--bw-radius:18px}
body.theme-light .bw-shell{--bw-bg:#ffffff;--bw-panel:#f6f8f7;--bw-border:#dce5e3;--bw-text:#18313a;--bw-muted:#566d75;--bw-accent:#176b54;--bw-accent-ink:#ffffff;--bw-warn:#9a5b00;--bw-error:#b42318}
.bw-shell{width:min(1120px,calc(100vw - 32px));max-width:calc(100vw - 32px);max-height:min(900px,94vh);max-height:min(900px,94dvh);padding:0;border:1px solid var(--bw-border);border-radius:var(--bw-radius);
  background:var(--bw-bg);color:var(--bw-text);font:14px/1.5 system-ui,-apple-system,"Segoe UI",sans-serif;box-shadow:0 24px 80px #0007;overflow:hidden;flex-direction:column}
.bw-shell[open]{display:flex}
.bw-shell::backdrop{background:#08131cc9}
.bw-backdrop{position:fixed;inset:0;z-index:69;background:#08131cc9}
.bw-shell.bw-fallback{position:fixed;inset:0;margin:auto;z-index:70}
.bw-shell *,.bw-shell *::before,.bw-shell *::after{box-sizing:border-box}
.bw-shell [hidden]{display:none!important}
.bw-shell :where(button,input,select,textarea){font:inherit;color:inherit}
.bw-shell :focus-visible{outline:3px solid var(--bw-accent);outline-offset:2px}

/* header */
.bw-head{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:6px 14px;padding:18px 22px 12px;border-bottom:1px solid var(--bw-border)}
.bw-head-text{min-width:0}
#bw-title{margin:0;font-size:21px;font-weight:750;letter-spacing:-.3px;line-height:1.25}
/* The title (tabindex=-1) only takes focus programmatically, to announce each step; Chrome then reports :focus-visible
   after keyboard use, so no ring here. Real controls keep the .bw-shell :focus-visible ring. */
#bw-title:focus,#bw-title:focus-visible,#bw-result[tabindex="-1"]:focus,#bw-result[tabindex="-1"]:focus-visible{outline:none}
.bw-stepno{display:block;font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--bw-accent)}
#bw-desc{margin:4px 0 0;font-size:13px;color:var(--bw-muted)}
.bw-close{display:grid;place-items:center;width:44px;height:44px;border:1px solid var(--bw-border);border-radius:50%;background:transparent;cursor:pointer}
.bw-close:hover{border-color:var(--bw-accent)}
.bw-trail{grid-column:1/-1;display:flex;flex-wrap:wrap;gap:4px 14px;margin:2px 0 0;padding:0;list-style:none;font-size:11px;color:var(--bw-muted);counter-reset:bw}
.bw-trail li{counter-increment:bw;white-space:nowrap}.bw-trail li::before{content:counter(bw) ". "}
.bw-trail li.bw-done{color:var(--bw-text)}.bw-trail li[aria-current=step]{color:var(--bw-accent);font-weight:700}

/* body: questions | side */
.bw-body{flex:1;min-height:0;display:grid;grid-template-columns:minmax(0,1fr) 340px;overflow:hidden}
.bw-main{min-width:0;overflow:auto;overscroll-behavior:contain;padding:18px 22px 22px;display:flex;flex-direction:column;gap:16px}
.bw-side{min-width:0;overflow:auto;overscroll-behavior:contain;padding:16px 18px;border-left:1px solid var(--bw-border);background:var(--bw-panel);display:flex;flex-direction:column;gap:12px}
.bw-preview{display:flex;justify-content:center;color:var(--bw-muted);background:var(--bw-bg);border:1px solid var(--bw-border);border-radius:12px;padding:6px;min-height:120px}
.bw-preview svg{width:100%;height:auto;max-height:240px}
.bw-summary{display:grid;grid-template-columns:auto minmax(0,1fr);gap:4px 12px;margin:0;font-size:12px}
.bw-summary dt{color:var(--bw-muted)}.bw-summary dd{margin:0;font-weight:600;overflow-wrap:anywhere}
.bw-issues{display:flex;flex-direction:column;gap:4px;margin:0;padding:0;list-style:none;font-size:12px}
.bw-issue{padding:5px 8px;border-left:3px solid var(--bw-border);border-radius:0 6px 6px 0;background:var(--bw-bg);color:var(--bw-muted)}
.bw-issue[data-sev=error]{border-left-color:var(--bw-error);color:var(--bw-error)}.bw-issue[data-sev=warn]{border-left-color:var(--bw-warn)}

/* questions */
.bw-q{display:flex;flex-direction:column;gap:8px;min-width:0}
.bw-prompt{margin:0;font-size:15px;font-weight:700}
.bw-req{font-size:12px;font-weight:500;color:var(--bw-muted)}
.bw-help,.bw-hint,.bw-count{margin:0;font-size:12px;color:var(--bw-muted)}
.bw-err{margin:0;font-size:13px;font-weight:700;color:var(--bw-error)}
.bw-empty{margin:0;color:var(--bw-muted)}
.bw-sub{margin:0;font-size:12px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--bw-muted)}
.bw-field{display:flex;flex-direction:column;gap:5px;min-width:0}
.bw-label{font-size:12px;font-weight:650;color:var(--bw-muted)}
.bw-input{width:100%;min-width:0;min-height:44px;padding:8px 11px;border:1px solid var(--bw-border);border-radius:9px;background:var(--bw-panel);color:var(--bw-text)}
.bw-num{display:flex;align-items:center;gap:6px}.bw-unit{flex:none;font-size:12px;color:var(--bw-muted)}
.bw-grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 14px}
.bw-grid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px 14px}
.bw-toggle{position:relative;display:flex;align-items:center;gap:10px;min-height:44px;cursor:pointer;font-weight:600}
.bw-check{position:absolute;opacity:0;width:42px;height:24px;margin:0;cursor:pointer}
.bw-switch{flex:none;position:relative;width:42px;height:24px;border-radius:999px;background:var(--bw-panel);border:1px solid var(--bw-border);transition:background .15s}
.bw-switch::after{content:"";position:absolute;top:3px;left:3px;width:16px;height:16px;border-radius:50%;background:var(--bw-muted);transition:transform .15s,background .15s}
.bw-check:checked+.bw-switch{background:var(--bw-accent);border-color:var(--bw-accent)}.bw-check:checked+.bw-switch::after{transform:translateX(18px);background:var(--bw-accent-ink)}
.bw-check:focus-visible+.bw-switch{outline:3px solid var(--bw-accent);outline-offset:2px}

/* cards (ARIA radios) */
.bw-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:10px}
.bw-seg{display:flex;flex-wrap:wrap;gap:6px}
.bw-card{display:flex;align-items:center;gap:10px;min-height:44px;padding:10px 12px;border:1px solid var(--bw-border);border-radius:12px;background:var(--bw-panel);color:var(--bw-text);text-align:left;cursor:pointer;transition:border-color .15s,background .15s}
.bw-card:hover{border-color:var(--bw-accent)}
.bw-card[aria-checked=true]{border-color:var(--bw-accent);background:color-mix(in srgb,var(--bw-accent) 16%,var(--bw-panel));box-shadow:inset 0 0 0 1px var(--bw-accent)}
.bw-card[aria-disabled=true]{opacity:.45;cursor:not-allowed}
.bw-seg .bw-card{padding:8px 14px;border-radius:999px}
.bw-card-icon{flex:none;display:grid;place-items:center;color:var(--bw-accent)}
.bw-card-text{display:flex;flex-direction:column;min-width:0}
.bw-card-label{font-weight:700;overflow-wrap:anywhere}
.bw-card-hint{font-size:12px;color:var(--bw-muted)}
.bw-start .bw-card{flex-direction:column;align-items:flex-start;min-height:120px;padding:16px}
.bw-radios[aria-invalid=true]{outline:2px solid var(--bw-error);outline-offset:6px;border-radius:12px}
.bw-swatches{display:inline-flex;flex:none}.bw-dot{width:16px;height:16px;border-radius:50%;margin-right:-4px;border:2px solid var(--bw-bg)}
.bw-swatch-cards{grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}
.bw-machine{display:flex;flex-direction:column;gap:10px}

/* gallery */
.bw-gallery{display:flex;flex-direction:column;gap:14px}
.bw-family{font-size:11px;font-weight:750;letter-spacing:.1em;text-transform:uppercase;color:var(--bw-accent);margin:0 0 6px}
.bw-gallery-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:10px}
.bw-pkg{flex-direction:column;align-items:stretch;padding:0;overflow:hidden}
.bw-pkg .bw-card-text{padding:8px 12px 12px}
.bw-pkg-thumb{display:grid;place-items:center;height:86px;background:var(--bw-bg);border-bottom:1px solid var(--bw-border);color:var(--bw-accent)}
.bw-pkg-thumb svg{max-width:100%;max-height:80px}

/* result */
.bw-result-card{display:flex;gap:14px;padding:16px;border:1px solid var(--bw-accent);border-radius:14px;background:var(--bw-panel)}
.bw-result-card:focus{outline:none}.bw-result-card:focus-visible{outline:3px solid var(--bw-accent)}
.bw-result-text{display:flex;flex-direction:column;gap:4px;min-width:0}
.bw-result-name{margin:0;font-size:18px;font-weight:750}
.bw-result-dims{margin:0;font-weight:600}
.bw-reasons summary{cursor:pointer;font-size:12px;font-weight:650;color:var(--bw-accent);min-height:28px}
.bw-reasons ul{margin:6px 0 0;padding-left:18px;font-size:12px;color:var(--bw-muted)}
.bw-alts{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px}.bw-alts .bw-sub{grid-column:1/-1}
.bw-tweaks{display:flex;flex-direction:column;gap:12px;padding-top:4px;border-top:1px solid var(--bw-border)}
.bw-confirm{display:flex;flex-direction:column;gap:8px;padding:14px;border:2px solid var(--bw-warn);border-radius:12px;background:var(--bw-panel)}
.bw-confirm h3{margin:0;font-size:16px}.bw-confirm p{margin:0}
.bw-confirm-list{margin:0;padding-left:18px;font-size:13px;color:var(--bw-muted)}
.bw-confirm-actions{display:flex;flex-wrap:wrap;gap:8px}

/* footer */
.bw-foot{display:flex;align-items:center;gap:10px;padding:12px 22px;border-top:1px solid var(--bw-border);background:var(--bw-bg)}
.bw-live{flex:1;min-width:0;font-size:12px;color:var(--bw-muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.bw-foot-extra{display:flex;flex-wrap:wrap;gap:8px}
.bw-back,.bw-next,.bw-btn{min-height:44px;padding:9px 16px;border:1px solid var(--bw-border);border-radius:10px;background:var(--bw-panel);color:var(--bw-text);font-weight:650;cursor:pointer}
.bw-back:hover,.bw-btn:hover{border-color:var(--bw-accent)}
.bw-shell .bw-primary{background:var(--bw-accent);border-color:var(--bw-accent);color:var(--bw-accent-ink);min-width:150px}
.bw-link{background:transparent;border-color:transparent;color:var(--bw-accent);text-decoration:underline}
.bw-danger{background:var(--bw-error);border-color:var(--bw-error);color:#fff}

/* layout breakpoints (spec 3.5) */
@media (max-width:1000px){
  .bw-body{grid-template-columns:minmax(0,1fr);overflow:auto}
  .bw-main,.bw-side{overflow:visible}
  .bw-side{border-left:0;border-top:1px solid var(--bw-border)}
}
@media (max-width:767px){
  .bw-shell{width:100vw;max-width:100vw;max-height:92vh;max-height:92dvh;margin:auto 0 0;border-radius:18px 18px 0 0;border-bottom:0}
  .bw-shell.bw-fallback{inset:auto 0 0 0}
  .bw-head{padding:14px 16px 10px}#bw-title{font-size:18px}
  .bw-main{padding:14px 16px 18px}.bw-side{padding:12px 16px}
  .bw-foot{position:sticky;bottom:0;flex-wrap:wrap;padding:10px 16px calc(10px + env(safe-area-inset-bottom))}
  .bw-live{order:-1;flex-basis:100%}
  .bw-next{flex:1}
  .bw-grid3{grid-template-columns:repeat(3,minmax(0,1fr))}
  .bw-input{font-size:16px}
  .bw-trail{display:none}
}
@media (max-width:600px){
  .bw-cards,.bw-gallery-grid,.bw-alts,.bw-swatch-cards{grid-template-columns:minmax(0,1fr)}
  .bw-start .bw-card{min-height:72px;flex-direction:row;align-items:center}
  .bw-grid2{grid-template-columns:minmax(0,1fr)}
  .bw-reasons summary{min-height:44px;display:flex;align-items:center}
}
@media (prefers-reduced-motion:reduce){.bw-shell *{transition:none!important}}