/* Flowbase Inc. home: one-screen stage. Header + stage + compact footer fit one viewport; no page scroll.
   The Three.js scene autoplays once (see home-stage.js) and holds its final state next to the company copy. */
html:has(body.home),html.home-lock{height:100%;overflow:hidden}
body.home{height:100vh;height:100dvh;overflow:hidden;display:flex;flex-direction:column;font-size:16px;line-height:1.5}
.home .site-header{position:relative;flex:none}
.home .site-header .wrap{min-height:56px;max-width:1360px}
.home main{flex:1 1 auto;min-height:0;display:flex}

/* compact one-row footer (home only) */
.home .site-footer.compact{flex:none;margin:0;padding:8px 0;font-size:12.5px;line-height:1.4}
.home .site-footer.compact .wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:2px 18px;max-width:1360px}
.home .site-footer.compact .copy{grid-column:auto;border:0;padding:0;margin:0}
.home .site-footer.compact ul{gap:2px 16px}

/* stage */
.story{padding:0;position:relative;flex:1 1 auto;min-height:0;display:flex;overflow:hidden;background:var(--bg)}
.story-bg{position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(50% 70% at 30% 50%,rgba(46,230,166,.10),transparent 70%),
    radial-gradient(35% 50% at 26% 60%,rgba(46,230,166,.06),transparent 75%),
    radial-gradient(90% 80% at 90% 100%,rgba(28,36,48,.55),transparent 70%),
    linear-gradient(180deg,#0B0F14 0%,#0C1117 60%,#0B0F14 100%)}
.story-bg::after{content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(42,52,65,.22) 1px,transparent 1px),linear-gradient(90deg,rgba(42,52,65,.22) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(45% 60% at 30% 50%,#000 0%,transparent 75%);mask-image:radial-gradient(45% 60% at 30% 50%,#000 0%,transparent 75%);opacity:.35}
.stage-grid{position:relative;flex:1 1 auto;min-height:0;width:100%;max-width:1360px;margin:0 auto;padding:0 24px;
  display:grid;grid-template-columns:minmax(0,1.05fr) minmax(380px,.95fr);gap:clamp(16px,3vw,48px)}

/* visual column */
.stage-visual{position:relative;min-width:0;min-height:0}
.story-canvas{position:absolute;inset:0;
  -webkit-mask-image:radial-gradient(75% 75% at 50% 50%,#000 70%,transparent 100%);mask-image:radial-gradient(75% 75% at 50% 50%,#000 70%,transparent 100%)}
.story-canvas canvas{display:block;width:100%!important;height:100%!important;outline:none}
.can-drag .story-canvas{cursor:grab}
.can-drag .story-canvas.dragging{cursor:grabbing}
.story-fallback{display:none;position:absolute;inset:0;align-items:center;justify-content:center}
.story-fallback svg{width:min(40%,180px);height:auto}
.no-webgl .story-canvas{display:none}
.no-webgl .story-fallback{display:flex}
.stage-tools{position:absolute;left:0;right:0;bottom:12px;display:flex;justify-content:center;align-items:center;gap:14px;font-size:12.5px;color:var(--text2);pointer-events:none}
.stage-tools>*{pointer-events:auto}
.hint-drag{display:none;align-items:center;gap:8px}
.hint-drag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);opacity:.8}
.can-drag.done .hint-drag{display:inline-flex}
.replay{font:inherit;color:var(--text2);background:rgba(20,26,34,.8);border:1px solid var(--border);border-radius:999px;padding:4px 12px;cursor:pointer}
.replay:hover{color:var(--text);border-color:var(--text2)}
.no-webgl .stage-tools{display:none}

/* copy column */
.stage-copy{position:relative;z-index:2;min-width:0;min-height:0;display:flex;flex-direction:column;justify-content:center;
  gap:clamp(10px,2.2vh,22px);padding:clamp(10px,2.5vh,28px) 0;overflow-x:hidden;overflow-y:auto;scrollbar-width:thin}
.steps{display:flex;flex-wrap:wrap;gap:4px 14px;list-style:none;margin:0;padding:0;font-size:12px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:#5D6B7A;counter-reset:st}
.steps li{display:inline-flex;align-items:center;gap:6px;transition:color .3s}
.steps li::before{counter-increment:st;content:"0" counter(st);color:inherit;opacity:.8}
.steps li.done{color:var(--text2)}
.steps li.on{color:var(--accent)}
.chapters{display:grid}
.story .chapter{grid-area:1/1;align-self:start}
.story .chapter:not([data-chapter="0"]){opacity:0;visibility:hidden}
.chapter h2{font-size:clamp(22px,min(2.7vw,4.4vh),40px);font-weight:800;line-height:1.15;margin:0 0 .35em}
.chapter h2 em{font-style:normal;color:var(--accent)}
.chapter .lead{font-size:clamp(14px,min(1.3vw,2.2vh),18px);line-height:1.5;margin:0;max-width:34em}

.about{border-top:1px solid var(--border);padding-top:clamp(10px,2vh,20px);font-size:clamp(13px,min(1.1vw,1.9vh),15.5px);line-height:1.5;color:var(--text2)}
.about-head{display:flex;align-items:center;flex-wrap:wrap;gap:4px 12px;margin-bottom:.35em}
.about-cta{margin-left:auto;padding:7px 14px;font-size:14px}
.about .eyebrow{margin:0;font-size:12px}
.about h2{font-size:clamp(17px,min(1.6vw,2.7vh),23px);margin:0;color:var(--text)}
.about-lead{margin:0 0 .7em}
.about-sub{font-size:1em;margin:0 0 .35em;color:var(--text);letter-spacing:0}
.principles{list-style:none;margin:0 0 .8em;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.principles li{background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:.6em .75em;font-size:.92em;line-height:1.45}
.principles strong{display:block;color:var(--text);margin-bottom:.15em}
.contact-row{display:flex;align-items:center;gap:12px 18px;flex-wrap:wrap;margin-bottom:.55em}
.contact{display:flex;flex-wrap:wrap;gap:.15em 20px;margin:0;flex:1 1 300px}
.contact div{min-width:0}
.contact .addr{flex-basis:100%}
.contact dt{display:inline;font-size:.82em;text-transform:uppercase;letter-spacing:.06em;color:#6E7C8B;margin-right:.5em}
.contact dd{display:inline;margin:0;color:var(--text)}
.contact a{font-weight:700}
.contact-row .btn{padding:8px 14px;font-size:14px;flex:none}
.disclaimer{margin:0;font-size:.85em;color:#7D8A98}

/* reduced motion / static: final composition, no motion */
.story-static .replay{display:none}

/* tablet & phone: stacked, canvas on top */
@media (max-width:900px){
  .stage-grid{grid-template-columns:1fr;grid-template-rows:minmax(100px,1fr) auto;gap:0;padding:0 18px}
  .stage-copy{justify-content:flex-start;padding:2px 0 6px;gap:clamp(5px,1.2vh,14px)}
  .chapter h2{font-size:clamp(18px,min(5.4vw,3.6vh),30px)}
  .chapter .lead{font-size:clamp(12px,min(3.4vw,2.1vh),16px);line-height:1.38}
  .about{font-size:clamp(11px,min(3.12vw,1.95vh),15px);line-height:1.38;padding-top:clamp(6px,1.4vh,14px)}
  .about h2{font-size:clamp(15px,min(4.4vw,2.7vh),21px)}
  .principles{grid-template-columns:1fr;gap:0;margin-bottom:.6em}
  .principles li{background:none;border:0;border-radius:0;padding:.12em 0;font-size:1em}
  .principles strong{display:inline;margin:0 .2em 0 0}
  .contact{gap:.1em 14px;flex-basis:100%}
  .contact-row{margin-bottom:.4em}
  .about-head{flex-wrap:nowrap;gap:8px}
  .about .eyebrow{font-size:10.5px;letter-spacing:.06em}
  .about-cta{padding:4px 10px;font-size:11.5px;border-radius:8px}
  .stage-tools{bottom:2px;justify-content:flex-end}
  .story-canvas{-webkit-mask-image:radial-gradient(70% 70% at 50% 50%,#000 70%,transparent 100%);mask-image:radial-gradient(70% 70% at 50% 50%,#000 70%,transparent 100%)}
}
@media (max-width:680px){
  .home .site-header .wrap{min-height:0;padding-top:6px;padding-bottom:2px;gap:0}
  .home .brand{font-size:15px}
  .home .brand svg{width:24px;height:24px}
  .home .nav a{padding:5px 9px;font-size:13px}
  .home .site-footer.compact{padding:5px 0;font-size:11px}
  .home .site-footer.compact .wrap{gap:0 12px;justify-content:flex-start}
  .home .site-footer.compact ul{display:none} /* same links are in the header nav */
  .steps{font-size:10.5px;gap:2px 0;letter-spacing:.02em;text-transform:none}
  .steps li::before{content:none}
  .steps li+li::before{content:"\00B7";margin:0 6px;color:#5D6B7A;opacity:1}
  .stage-tools{font-size:11px}
  .replay{padding:1px 9px;font-size:10.5px}
}
@media (max-width:680px){
  .hint-drag,.can-drag.done .hint-drag{display:none}
}
@media (max-width:380px){
  .home .nav a{padding:5px 6px;font-size:12.5px}
}
/* very short phones only (below the 360x640 class, e.g. 320x568): drop the per-chapter lead line, keep the headline.
   If content still cannot fit, the copy column (not the page) scrolls as a last resort. */
@media (max-width:680px) and (max-height:600px){
  .chapter .lead{display:none}
  .stage-grid{grid-template-rows:minmax(64px,1fr) auto}
  .about{font-size:10.5px;line-height:1.34}
  .chapter h2{font-size:17px}
  .home .site-footer.compact{font-size:10px;padding:4px 0}
  .stage-copy{gap:5px}
}
/* phones in landscape: side-by-side again, compact single-row header */
@media (orientation:landscape) and (max-height:500px) and (max-width:1000px){
  .home .site-header .wrap{flex-direction:row;align-items:center;min-height:0;padding-top:4px;padding-bottom:4px}
  .home .brand{font-size:14px}
  .home .nav a{padding:4px 8px;font-size:12px}
  .stage-grid{grid-template-columns:minmax(0,.62fr) minmax(0,1.38fr);grid-template-rows:none;gap:14px;padding:0 18px}
  .stage-copy{justify-content:center;padding:4px 0;gap:5px}
  .chapter .lead{display:none}
  .chapter h2{font-size:17px}
  .steps{font-size:10px}
  .about{font-size:10.5px;line-height:1.34;padding-top:5px}
  .about h2{font-size:14px}
  .home .site-footer.compact{font-size:10px;padding:3px 0}
  .stage-tools{justify-content:center}
}