style.css

:root {
  --paper:#fff;
  --ink:#050505;
  --purple:#6c4fe0;
  --lilac:#cd82f0;
  --green:#2dbd70;
  --red:#e45454;
  --neutral-50:#fafafa;
  --neutral-100:#f4f4f3;
  --neutral-200:#e7e7e5;
  --neutral-300:#b9b9b5;
  --neutral-500:#737373;
  --neutral-700:#404040;
  --border:rgba(0,0,0,.09);
  --sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --serif:"Instrument Serif",Georgia,"Times New Roman",serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
}

* { box-sizing:border-box; }
html { background:var(--neutral-50); }
body {
  min-width:320px;
  min-height:100vh;
  margin:0;
  background:var(--neutral-50);
  color:var(--ink);
  font:16px/1.45 var(--sans);
  -webkit-font-smoothing:antialiased;
}
button,textarea,input { font:inherit; }
a { color:inherit; }
[hidden] { display:none!important; }

.wrap {
  display:flex;
  flex-direction:column;
  width:min(calc(100% - 32px),1240px);
  min-height:100vh;
  min-height:100dvh;
  margin:0 auto;
  border-right:1px solid var(--border);
  border-left:1px solid var(--border);
  background:var(--paper);
}

.site-intro { margin-top:auto; padding:20px 30px 16px; }
h1 {
  margin:0 0 7px;
  font:400 clamp(40px,4.3vw,51px)/.98 var(--serif);
  letter-spacing:.002em;
}
h1 em { color:var(--purple); font-weight:400; font-style:italic; }
.sub { max-width:900px; margin:0; color:var(--neutral-500); font-size:15px; line-height:1.45; }

.model-strip {
  display:grid;
  grid-template-columns:48px 280px minmax(240px,1fr);
  align-items:center;
  column-gap:16px;
  min-height:76px;
  padding:12px 30px;
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
  background:linear-gradient(90deg,rgba(108,79,224,.018),rgba(205,130,240,.035),rgba(108,79,224,.018));
  transition:background .3s ease;
}
.model-logo-frame { position:relative; display:block; width:48px; height:48px; overflow:hidden; }
.model-logo {
  position:absolute;
  top:50%;
  left:50%;
  display:block;
  width:56px;
  height:auto;
  max-width:none;
  transform:translate(-50%,-50%);
  image-rendering:pixelated;
}
.model-copy { display:flex; min-width:0; align-items:center; justify-content:center; }
.model-name-row { display:flex; min-height:25px; align-items:center; gap:10px; white-space:nowrap; }
.model-copy a { font:400 22px/1.15 var(--serif); text-decoration:none; }
.model-copy a:hover { color:var(--purple); }
.model-variant { display:inline-flex; height:18px; align-items:center; box-sizing:border-box; padding:0 7px; border:1px solid rgba(108,79,224,.14); border-radius:999px; background:rgba(108,79,224,.05); color:var(--purple); font:700 9px/1 var(--mono); letter-spacing:.035em; text-transform:uppercase; }
.load-block { min-width:0; }
.load-meta { display:flex; align-items:center; justify-content:space-between; gap:14px; margin-bottom:8px; color:var(--neutral-500); font-size:12px; font-weight:600; }
#load-percent { font:600 11px/1 var(--mono); font-variant-numeric:tabular-nums; }
.load-track { height:7px; overflow:hidden; border-radius:999px; background:rgba(108,79,224,.09); }
.load-track span { display:block; width:0; height:100%; border-radius:inherit; background:linear-gradient(90deg,var(--purple),var(--lilac)); transition:width .18s ease; }
.is-ready .load-track { background:rgba(45,189,112,.09); }
.is-ready .load-track span { background:var(--green); }
.is-ready .load-meta { color:#188e50; }
.is-error .load-track span { background:var(--red); }
.is-error .load-meta { color:var(--red); }

main { display:flex; min-height:0; flex:0 0 auto; flex-direction:column; margin-bottom:auto; padding:18px 30px 22px; }
.diffusion-workspace {
  display:grid;
  grid-template-columns:minmax(360px,.9fr) minmax(480px,1.18fr);
  align-items:stretch;
  gap:18px;
  min-height:432px;
}
.workspace-card {
  position:relative;
  min-width:0;
  overflow:hidden;
  border:1px solid var(--border);
  border-radius:12px;
  background:var(--paper);
  transition:border-color .2s,box-shadow .2s,transform .2s;
}
.prompt-panel,.response-panel { padding:20px; }
.panel-header { display:flex; align-items:flex-start; justify-content:space-between; gap:16px; margin-bottom:16px; }
.panel-header h2 { margin:0 0 5px; color:var(--neutral-500); font:600 12px/1.25 var(--mono); letter-spacing:.08em; text-transform:uppercase; }
.panel-header p { margin:0; color:var(--neutral-500); font-size:13px; line-height:1.4; }
.activity-pill {
  display:inline-flex;
  align-items:center;
  gap:8px;
  flex:none;
  padding:7px 10px;
  border:1px solid var(--border);
  border-radius:999px;
  background:var(--neutral-50);
  color:var(--neutral-500);
  font-size:11px;
  font-weight:650;
  white-space:nowrap;
}
.activity-pill i { width:8px; height:8px; border-radius:50%; background:var(--green); box-shadow:0 0 0 4px rgba(45,189,112,.1); }
.activity-pill.is-running { border-color:rgba(108,79,224,.2); background:rgba(108,79,224,.055); color:var(--purple); }
.activity-pill.is-running i { background:var(--purple); box-shadow:0 0 0 5px rgba(108,79,224,.11); animation:status-pulse .8s ease-in-out infinite; }
.activity-pill.is-done { border-color:rgba(45,189,112,.2); background:rgba(45,189,112,.055); color:#188e50; animation:done-pill .5s ease both; }
.activity-pill.is-error { border-color:rgba(228,84,84,.2); background:rgba(228,84,84,.055); color:var(--red); }
.activity-pill.is-error i { background:var(--red); box-shadow:none; }

.prompt-stage { position:relative; min-height:145px; overflow:hidden; border:1px solid var(--border); border-radius:10px; background:var(--paper); transition:border-color .2s,box-shadow .2s; }
.prompt-stage:focus-within { border-color:var(--purple); box-shadow:0 0 0 3px rgba(108,79,224,.11); }
#prompt { position:relative; z-index:1; display:block; width:100%; min-height:145px; padding:15px 16px; border:0; outline:0; background:transparent; color:var(--ink); font-size:15px; line-height:1.55; resize:none; }
#prompt::placeholder { color:var(--neutral-300); }
.prompt-scan,.response-scan { position:absolute; inset:-1px; z-index:3; opacity:0; pointer-events:none; background:linear-gradient(90deg,transparent 20%,rgba(108,79,224,.055) 40%,rgba(205,130,240,.24) 49%,rgba(255,255,255,.86) 53%,transparent 73%); transform:translateX(-110%); }
.is-generating .prompt-scan { opacity:1; animation:panel-sweep 1.15s cubic-bezier(.45,0,.25,1) infinite; }
.composer-row { display:flex; align-items:center; justify-content:space-between; gap:14px; margin-top:10px; }
.composer-row > span { color:var(--neutral-500); font-size:10px; }
#go { display:inline-flex; min-width:102px; align-items:center; justify-content:center; gap:9px; padding:9px 13px; border:1px solid var(--ink); border-radius:999px; background:var(--ink); color:var(--paper); font-size:12px; font-weight:650; cursor:pointer; transition:transform .16s,box-shadow .16s,opacity .16s; }
#go i { font-size:16px; font-style:normal; transition:transform .16s; }
#go:hover:not(:disabled) { transform:translateY(-1px); box-shadow:0 7px 18px rgba(0,0,0,.12); }
#go:hover:not(:disabled) i { transform:translateX(2px); }
#go:disabled { cursor:wait; opacity:.48; }

.settings-heading { display:flex; align-items:baseline; justify-content:space-between; gap:12px; margin:17px 1px 9px; }
.settings-heading h3 { margin:0; color:var(--neutral-500); font:600 10px/1.25 var(--mono); letter-spacing:.08em; text-transform:uppercase; }
.settings-heading span { color:var(--neutral-300); font-size:10px; }
.settings-grid { display:grid; grid-template-columns:1fr 1fr; gap:7px; }
.range-control { display:grid; grid-template-columns:1fr auto; align-items:center; gap:5px 8px; min-width:0; padding:8px 10px 6px; border:1px solid var(--border); border-radius:9px; background:var(--neutral-50); }
.range-control > span { overflow:hidden; color:var(--neutral-500); font-size:10px; font-weight:650; text-overflow:ellipsis; white-space:nowrap; }
.range-control output { color:var(--purple); font:650 10px/1 var(--mono); font-variant-numeric:tabular-nums; }
.range-control input { grid-column:1/-1; }
.range-wide { grid-column:1/-1; }
input[type=range] { width:100%; height:18px; margin:0; appearance:none; background:transparent; accent-color:var(--purple); --pct:50%; cursor:pointer; }
input[type=range]::-webkit-slider-runnable-track { height:5px; border-radius:999px; background:linear-gradient(90deg,var(--purple) 0 var(--pct),var(--neutral-200) var(--pct) 100%); }
input[type=range]::-webkit-slider-thumb { width:14px; height:14px; margin-top:-4.5px; appearance:none; border:3px solid var(--paper); border-radius:50%; background:var(--purple); box-shadow:0 1px 4px rgba(38,26,90,.3); }
input[type=range]::-moz-range-track { height:5px; border:0; border-radius:999px; background:var(--neutral-200); }
input[type=range]::-moz-range-progress { height:5px; border-radius:999px; background:var(--purple); }
input[type=range]::-moz-range-thumb { width:9px; height:9px; border:3px solid var(--paper); border-radius:50%; background:var(--purple); }

.response-panel { display:flex; flex-direction:column; }
.response-stage { position:relative; display:flex; min-height:342px; flex:1; overflow:hidden; border:1px solid var(--border); border-radius:10px; background:linear-gradient(145deg,#fff 0%,rgba(108,79,224,.015) 55%,rgba(205,130,240,.035) 100%); transition:border-color .2s,box-shadow .2s; }
.response-stage.is-denoising { border-color:rgba(108,79,224,.3); box-shadow:0 0 0 3px rgba(108,79,224,.055),inset 0 0 38px rgba(108,79,224,.025); }
.response-stage.is-denoising .response-scan { opacity:1; animation:response-sweep 1.15s cubic-bezier(.45,0,.25,1) infinite; }
.empty-state { display:flex; width:100%; flex-direction:column; align-items:center; justify-content:center; padding:30px; color:var(--neutral-500); text-align:center; }
.empty-state strong { margin-top:17px; color:var(--neutral-700); font-size:14px; }
.empty-state p { margin:5px 0 16px; font-size:12px; }
.idle-orbit { position:relative; display:grid; width:58px; height:58px; place-items:center; border:1px solid rgba(108,79,224,.18); border-radius:50%; box-shadow:inset 0 0 0 12px rgba(108,79,224,.025); }
.idle-orbit::before,.idle-orbit span { content:""; position:absolute; border-radius:50%; }
.idle-orbit::before { width:10px; height:10px; background:var(--purple); box-shadow:0 0 0 6px rgba(108,79,224,.08); }
.idle-orbit span { top:2px; width:7px; height:7px; background:var(--lilac); transform-origin:3.5px 26px; animation:idle-orbit-turn 3.2s linear infinite; }
.idle-orbit i { width:28px; height:28px; border:1px dashed rgba(108,79,224,.18); border-radius:50%; animation:idle-orbit-turn 8s linear infinite reverse; }
.idle-masks { display:flex; align-items:center; gap:5px; }
.idle-masks span { width:24px; height:8px; border-radius:3px; background:rgba(108,79,224,.09); animation:idle-mask 1.6s ease-in-out infinite alternate; }
.idle-masks span:nth-child(2),.idle-masks span:nth-child(5) { width:39px; animation-delay:-.5s; }
.idle-masks span:nth-child(3),.idle-masks span:nth-child(6) { width:18px; animation-delay:-.9s; }
.assistant-message { display:flex; width:100%; min-height:100%; flex-direction:column; padding:18px 18px 16px; }
.canvas { flex:1; color:var(--ink); font-size:16px; line-height:1.75; white-space:pre-wrap; word-break:break-word; }
.canvas .mask { display:inline-flex; height:1.7em; align-items:center; margin:2px 3px 2px 0; padding:0 6px; border:1px solid rgba(108,79,224,.12); border-radius:4px; background:linear-gradient(100deg,rgba(108,79,224,.055),rgba(205,130,240,.2),rgba(108,79,224,.055)); background-size:220% 100%; color:rgba(108,79,224,.78); font:600 9px/1 var(--mono); letter-spacing:-.025em; vertical-align:.1em; animation:mask-breathe 1.25s ease-in-out infinite,mask-shimmer 1.45s linear infinite; animation-delay:calc(var(--token-index) * -23ms); }
.canvas .tok { animation:token-settle .28s ease both; }
.canvas .tok.new { position:relative; border-radius:3px; animation:token-reveal .62s cubic-bezier(.2,.8,.2,1) both; }
.starting-copy { color:var(--neutral-300); font-style:italic; }
.generation-meta { margin-top:auto; padding-top:14px; }
.step-track { height:6px; overflow:hidden; border-radius:999px; background:rgba(108,79,224,.08); }
.step-track span { display:block; width:0; height:100%; border-radius:inherit; background:linear-gradient(90deg,var(--purple),var(--lilac)); box-shadow:0 0 12px rgba(108,79,224,.28); transition:width .22s cubic-bezier(.2,.8,.2,1); }
.stats { min-height:16px; margin-top:8px; color:var(--neutral-500); font:500 10px/1.5 var(--mono); font-variant-numeric:tabular-nums; }
.response-stage.is-complete { animation:response-complete .8s ease both; }

.examples-panel { display:flex; align-items:center; gap:15px; margin-top:16px; padding:15px 17px; overflow:hidden; border:1px solid var(--border); border-radius:11px; background:var(--neutral-50); }
.examples-label { flex:none; color:var(--neutral-500); font:600 11px/1.3 var(--mono); letter-spacing:.07em; text-transform:uppercase; }
.example-list { display:flex; flex-wrap:wrap; gap:7px; min-width:0; padding-top:2px; }
.ex { display:inline-flex; align-items:center; padding:8px 12px; border:1px solid var(--border); border-radius:999px; background:var(--paper); color:var(--neutral-700); font-size:12px; line-height:1.15; cursor:pointer; transition:background .15s,border-color .15s,color .15s,transform .15s,box-shadow .15s; }
.ex:hover { border-color:rgba(108,79,224,.28); color:var(--purple); transform:translateY(-1px); box-shadow:0 5px 12px rgba(54,42,105,.08); }
.ex.active { border-color:var(--ink); background:var(--ink); color:var(--paper); box-shadow:none; }
.prompt-panel.example-changed { animation:example-pulse .55s ease both; }
.sr-only { position:absolute!important; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0; }

@keyframes idle-orbit-turn { to { transform:rotate(360deg); } }
@keyframes status-pulse { 50% { transform:scale(.72); opacity:.55; } }
@keyframes done-pill { 0% { transform:scale(.95); } 55% { transform:scale(1.04); } 100% { transform:scale(1); } }
@keyframes panel-sweep { from { transform:translateX(-110%); } to { transform:translateX(110%); } }
@keyframes response-sweep { 0% { transform:translateX(-115%); } 70%,100% { transform:translateX(115%); } }
@keyframes idle-mask { to { opacity:.35; transform:scaleX(.82); } }
@keyframes mask-breathe { 50% { opacity:.42; transform:scaleY(.78); } }
@keyframes mask-shimmer { from { background-position:100% 0; } to { background-position:-100% 0; } }
@keyframes token-settle { from { opacity:.35; } to { opacity:1; } }
@keyframes token-reveal { 0% { color:var(--purple); background:rgba(205,130,240,.3); box-shadow:0 0 14px rgba(205,130,240,.35); transform:translateY(2px); } 100% { color:inherit; background:transparent; box-shadow:none; transform:none; } }
@keyframes response-complete { 0% { box-shadow:0 0 0 0 rgba(45,189,112,.2); } 45% { border-color:rgba(45,189,112,.42); box-shadow:0 0 0 5px rgba(45,189,112,.09),inset 0 0 38px rgba(45,189,112,.035); } 100% { box-shadow:none; } }
@keyframes example-pulse { 0% { border-color:var(--border); } 50% { border-color:rgba(108,79,224,.35); box-shadow:0 0 0 4px rgba(108,79,224,.06); } 100% { border-color:var(--border); box-shadow:none; } }

@media (max-width:1120px) {
  .diffusion-workspace { grid-template-columns:minmax(330px,.88fr) minmax(410px,1.12fr); gap:14px; }
}
@media (max-width:900px) {
  .diffusion-workspace { grid-template-columns:1fr; gap:14px; }
  .response-stage { min-height:320px; }
  .model-copy { min-width:190px; }
}
@media (max-width:720px) {
  .wrap { width:100%; border:0; }
  .site-intro { padding:20px; }
  h1 { font-size:40px; }
  .sub { font-size:14px; }
  .model-strip { grid-template-columns:48px minmax(0,1fr); column-gap:16px; row-gap:10px; padding:12px 20px; }
  .model-copy { min-width:0; }
  .load-block { grid-column:1/-1; }
  main { padding:15px 20px 20px; }
  .prompt-panel,.response-panel { padding:17px; }
  .examples-panel { align-items:flex-start; flex-direction:column; gap:9px; }
}
@media (max-width:470px) {
  .model-name-row { align-items:flex-start; flex-direction:column; gap:2px; }
  .settings-grid { grid-template-columns:1fr; }
  .range-wide { grid-column:auto; }
  .composer-row { align-items:flex-end; flex-direction:column; }
  .composer-row > span { align-self:flex-start; }
  .response-heading { align-items:flex-start; flex-direction:column; }
}
@media (prefers-reduced-motion:reduce) {
  *,*::before,*::after { scroll-behavior:auto!important; animation-duration:.01ms!important; animation-iteration-count:1!important; transition-duration:.01ms!important; }
}