/* RICO-X SpeakerLab visual foundation.
 * One shared responsive scale for Home, Driver Library, Projects and engineering workspaces.
 * Component-specific Box Design layout lives in box-design.css.
 * Layout responds to CSS viewport/container dimensions, never physical monitor resolution or DPI.
 */
:root{
  --font-family-ui:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --font-family-mono:"SFMono-Regular",Consolas,"Liberation Mono",monospace;

  /* Metadata stays compact. Reading/control roles grow gently only when the CSS viewport has room. */
  --font-xs:10px;
  --font-sm:clamp(11px,calc(9px + .104vw),13px);
  --font-md:clamp(12px,calc(10px + .104vw),14px);
  --font-base:clamp(14px,calc(12px + .104vw),16px);
  --font-lg:clamp(16px,calc(14px + .104vw),18px);
  --font-xl:clamp(20px,calc(18px + .104vw),22px);
  --font-panel:clamp(24px,calc(21px + .156vw),27px);
  --font-page-title:clamp(44px,calc(34px + 1.67vw),78px);
  --font-hero:clamp(60px,calc(40px + 3.125vw),120px);

  --weight-normal:400;
  --weight-medium:500;
  --weight-semibold:600;
  --weight-nav:650;
  --weight-bold:700;
  --weight-extrabold:800;

  --drivers-color:#14c9e4;
  --design-color:#355bff;
  --projects-color:#ff2e91;
  --community-color:#ff6a00;
  --learn-color:#8b2cff;
  --about-color:#e9b900;

  /* Fluid UI rhythm. At a 1920px CSS viewport these remain close to the approved 1080p layout. */
  --space-1:clamp(6px,.35vw,10px);
  --space-2:clamp(10px,.55vw,16px);
  --space-3:clamp(14px,.8vw,24px);
  --space-4:clamp(20px,1.2vw,36px);
  --control-height:clamp(44px,2.3vw,54px);
  --card-padding:clamp(16px,.85vw,24px);
  --panel-gap:clamp(12px,.75vw,22px);

  --header-height:clamp(90px,4.7vw,112px);
  --page-max:clamp(1840px,92vw,2800px);
  --page-pad-x:clamp(22px,2.5vw,72px);
  --page-pad-top:clamp(24px,1.8vw,52px);
  --page-pad-bottom:clamp(36px,3.33vw,80px);
  --form-page-max:1120px;
  --list-page-max:1280px;
}

html{font-family:var(--font-family-ui);font-size:16px;text-rendering:optimizeLegibility}
body,button,input,textarea,select{font-family:var(--font-family-ui)}
body{font-size:var(--font-base);line-height:1.5}
code,pre,kbd,samp{font-family:var(--font-family-mono)}
small{font-size:var(--font-xs);line-height:1.4}
p,li,dd,dt,label,input,textarea,select,button{line-height:1.45}

/* Shared semantic type roles. */
.top-nav__item,.signin-link{font-size:var(--font-base);font-weight:var(--weight-nav);line-height:1.2}
.button{min-height:var(--control-height);font-size:var(--font-base);line-height:1.2;font-weight:var(--weight-bold)}
.eyebrow{font-size:var(--font-sm);line-height:1.3;letter-spacing:.22em;font-weight:var(--weight-extrabold)}
.page-title{font-size:var(--font-page-title);font-weight:var(--weight-extrabold);line-height:1;letter-spacing:-.05em}
.page-lede{font-size:var(--font-lg);font-weight:var(--weight-normal);line-height:1.55}
.workflow-form label{font-size:13px;line-height:1.45}
.workflow-form input:not([type=checkbox]),.workflow-form textarea,.workflow-form select{font-size:var(--font-base);line-height:1.45}
.review-section__head h2{font-size:var(--font-lg);line-height:1.25}.review-section__head span{font-size:var(--font-sm)}
.review-label strong{font-size:var(--font-md)}.source-toggle,.confidence,.confirm-box,.source-detail span,.source-detail small,.source-detail code,.flag{font-size:var(--font-xs)}
.validation{font-size:var(--font-md);line-height:1.45}
.engineering-head{font-size:var(--font-xs)}.engineering-row,.engineering-row strong{font-size:var(--font-sm);line-height:1.45}
.project-card p,.workspace-card__head a{font-size:var(--font-sm)}
.workspace-top,.workspace-tabs a{font-size:var(--font-md)}.mode-toggle button{font-size:var(--font-sm)}.status-row{font-size:var(--font-xs)}
.driver-source-note{font-size:var(--font-sm)}

/* Make the shell fill the viewport without artificial page heights. */
#app{min-height:100dvh;display:flex;flex-direction:column}
#app>main{flex:1 0 auto;min-width:0}
.site-header{height:var(--header-height);min-height:var(--header-height)}
.brand-link{width:clamp(210px,11vw,280px)}
.site-footer{margin-top:auto;min-height:0;padding:10px var(--page-pad-x);font-size:var(--font-sm);line-height:1.35}
.site-footer .home-origin{padding:0;font-size:var(--font-sm)}
.site-footer .home-origin svg{width:24px;height:17px}

/* Shared page geometry keeps route changes visually anchored while allowing large CSS viewports to breathe. */
.page,.library-page,.box-design-page{
  box-sizing:border-box;
  width:100%;
  max-width:var(--page-max);
  margin-inline:auto;
  padding:var(--page-pad-top) var(--page-pad-x) var(--page-pad-bottom);
  min-height:0;
}
.page-title{margin-bottom:12px}.page-lede{margin-bottom:24px}.eyebrow{margin-bottom:14px}
.library-page>.eyebrow{display:none}

/* Utility workflows read better as a centered column than a 4K-wide form. */
.page:has(.import-shell),.page:has(.review-form),.page:has(.auth-grid){max-width:min(var(--form-page-max),var(--page-max))}
.page:has(.contribution-queue-actions){max-width:min(var(--list-page-max),var(--page-max))}
.library-page .page-actions,.page:has(.contribution-queue-actions) .page-actions{width:fit-content;max-width:100%;margin-inline:auto;justify-content:center;flex-wrap:wrap}
.page:has(.contribution-queue-actions) .project-card{max-width:100%}

/* /design has a single visible final workspace. The app shell may exist for one microtask while the
 * route module hydrates it; keep that transient shell out of paint to prevent UI flash. */
body:has(.top-nav__item.is-active[href="/design"]) main>.page:not([data-box-design-ui="1"]){visibility:hidden}

/* Shared Driver/Box Design filter structure. The first engineering filters are open in markup;
 * secondary filters use native details/summary disclosure and remain identical across pages. */
.library-sidebar,.box-filter-rail{--filter-accent:var(--drivers-color)}
.library-search>label{font-size:var(--font-base);font-weight:var(--weight-bold)}
.library-search input{min-height:var(--control-height);font-size:var(--font-base)}
.library-filter-group{border:0;border-bottom:1px solid var(--line);padding:0 0 var(--space-2);margin:0 0 var(--space-2);min-width:0}
.library-filter-summary{list-style:none;display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:34px;padding:3px 1px;cursor:pointer;color:#526078;font-size:var(--font-sm);line-height:1.35;letter-spacing:.09em;text-transform:uppercase;font-weight:var(--weight-extrabold)}
.library-filter-summary::-webkit-details-marker{display:none}
.library-filter-summary__chevron{width:9px;height:9px;flex:none;border-right:2px solid var(--filter-accent);border-bottom:2px solid var(--filter-accent);transform:rotate(45deg) translateY(-2px);transition:transform .16s ease}
.library-filter-group[open]>.library-filter-summary .library-filter-summary__chevron{transform:rotate(225deg) translate(-2px,-1px)}
.library-filter-group__body{padding-top:var(--space-1)}
.library-facet__options{display:grid;gap:3px;max-height:clamp(190px,22dvh,300px);overflow-y:auto}
.library-filter-option{font-size:var(--font-md);line-height:1.45}
.library-filter-option small{font-size:var(--font-sm)}
.facet-hint,.facet-empty{font-size:var(--font-sm);line-height:1.5}
.library-range-inputs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--space-1)}
.library-range-inputs label{display:grid;gap:5px;min-width:0;font-size:var(--font-sm);font-weight:var(--weight-semibold);color:#526078}
.library-range-inputs input{box-sizing:border-box;width:100%;min-width:0;min-height:calc(var(--control-height) - 6px);border:1px solid #cbd3e0;border-radius:8px;background:#fff;padding:7px 8px;font-size:var(--font-md);color:var(--ink)}
.library-results-toolbar>p{font-size:var(--font-base)}
.library-sort{font-size:var(--font-md)}
.filter-chip{font-size:var(--font-sm)}

/* Known legacy microtype is normalized here to the visible 10px floor. */
.driver-chip,.driver-quick b,.driver-card__top small,.driver-card-specs dt{font-size:var(--font-xs)}
.driver-quick span{font-size:var(--font-sm)}
.driver-card-specs dd{font-size:13px}

/* Home: use the available main height so feature entry points settle toward the lower half naturally. */
#app>main:has(>.home-hero){display:flex;flex-direction:column;min-height:0}
.home-hero,.feature-grid{width:100%;max-width:clamp(1600px,78vw,2600px);margin-inline:auto;padding-inline:var(--page-pad-x)}
.home-hero{
  min-height:clamp(430px,55dvh,920px);
  padding-block:clamp(22px,3vh,58px);
  grid-template-columns:minmax(0,1.03fr) minmax(0,.97fr);
  gap:clamp(32px,5vw,110px);
}
.home-hero__copy{max-width:clamp(760px,38vw,980px)}
.home-hero h1{font-size:var(--font-hero);font-weight:var(--weight-extrabold);line-height:.96;letter-spacing:-.06em}
.hero-lede{font-size:clamp(16px,1.05vw,21px);line-height:1.55;margin:clamp(20px,2.5vh,34px) 0}
.hero-lede strong{font-size:clamp(18px,1.2vw,24px);font-weight:var(--weight-semibold)}
.hero-x{width:clamp(340px,34vw,820px);max-width:100%}
.feature-grid{margin-top:auto;padding-block:clamp(18px,3dvh,64px) clamp(30px,4vh,72px);grid-template-columns:repeat(4,minmax(0,1fr));gap:clamp(18px,2vw,38px)}
.feature-card{min-height:clamp(128px,15vh,200px);padding-top:clamp(18px,2vh,30px)}
.feature-card h2{font-size:clamp(16px,1.05vw,21px);line-height:1.25}
.feature-card p{font-size:clamp(12px,.85vw,16px);line-height:1.5}
.feature-card strong{font-size:clamp(12px,.8vw,15px);line-height:1.4}

/* Driver Library: compact cards and 3–4 columns whenever the results container can support them. */
.library-page .page-title{font-size:var(--font-page-title)}
.library-page .page-lede{font-size:var(--font-lg);margin-bottom:22px}

.library-browser{grid-template-columns:clamp(220px,13vw,300px) minmax(0,1fr);gap:var(--space-3);margin-top:var(--space-4)}
.library-sidebar{top:calc(var(--header-height) + 14px);max-height:calc(100dvh - var(--header-height) - 30px)}
.library-main{container-type:inline-size;container-name:driver-library}
.library-main .driver-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--space-2)}
.library-main .driver-card{padding:clamp(12px,.58vw,18px)}
.library-main .driver-card .driver-photo{height:clamp(108px,6.4vw,180px);margin:var(--space-1) auto}
.library-main .driver-card h2{font-size:clamp(16px,calc(14px + .104vw),20px);line-height:1.2;margin:8px 0 2px}
.library-main .driver-card p{margin-bottom:10px}
.library-main .driver-card-specs{gap:6px 10px;margin:8px 0 10px}
.library-main .driver-quick{gap:5px}.library-main .driver-quick span{padding:6px}
.library-main .driver-card__link{margin-top:8px;font-size:var(--font-md)}
.library-main .community-warning{padding:8px 10px;margin:8px 0 10px}

@container driver-library (min-width:760px){
  .library-main .driver-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@container driver-library (min-width:1120px){
  .library-main .driver-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
}

/* Route content gets a restrained transition; header/footer do not animate. */
@media (prefers-reduced-motion:no-preference){
  #app>main>*{animation:speakerlab-page-enter .15s cubic-bezier(.2,.75,.25,1) both}
  @keyframes speakerlab-page-enter{from{opacity:.7;transform:translateY(2px)}to{opacity:1;transform:none}}
}

@media(max-width:1280px){
  .home-hero{gap:36px}
  .library-browser{grid-template-columns:220px minmax(0,1fr)}
}
@media(max-width:1080px){
  .feature-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .library-browser{grid-template-columns:minmax(0,1fr)}
  .library-sidebar{position:static;max-height:none;overflow:visible;border-right:0;padding-right:0}
}
@media(max-width:780px){
  :root{--header-height:90px;--page-pad-x:20px;--page-pad-top:24px;--page-pad-bottom:40px}
  #app>main:has(>.home-hero){display:block}
  .brand-link{width:190px}
  .home-hero{grid-template-columns:1fr;min-height:auto;gap:28px;padding-block:28px}
  .home-hero h1{font-size:clamp(50px,13vw,72px)}
  .hero-x{width:min(440px,90vw)}
  .feature-grid{grid-template-columns:1fr;margin-top:0;padding-top:24px}
  .site-footer{grid-template-columns:1fr;justify-items:center;text-align:center;padding-block:12px}
  .page-title{font-size:clamp(42px,11vw,54px)}
  .page-lede{font-size:15px}
  .library-range-inputs{grid-template-columns:1fr 1fr}
}
@media(max-width:480px){
  .home-hero,.feature-grid{padding-inline:16px}
  .library-main .driver-grid{grid-template-columns:1fr}
  .page-actions .button{width:100%}
  .library-range-inputs{grid-template-columns:1fr}
}