:root{
  --bg:#0B0F14; --bg-2:#121821; --surface:#161E29; --line:#243040; --line-2:#31405480;
  --ink:#EAF0F7; --ink-2:#A9BACD; --ink-3:#7C8FA6;
  --accent:#6EE7A8; --accent-ink:#08120C; --danger:#FF8A7A;
  --f-ui:"Archivo","Helvetica Neue",Arial,sans-serif;
  --f-mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --r:10px; --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
/* the hidden attribute must beat any display: rule below it */
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--f-ui);
  font-size:16px;line-height:1.55;-webkit-font-smoothing:antialiased}
h1{font-size:clamp(1.9rem,3.6vw,2.9rem);line-height:1.08;letter-spacing:-.03em;margin:.6rem 0 0;text-wrap:balance}
p{margin:0}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:1rem;top:-100%;z-index:99;background:var(--accent);color:var(--accent-ink);
  padding:.7rem 1.1rem;border-radius:var(--r);font-weight:600}
.skip:focus{top:1rem}

/* header */
.top{display:flex;align-items:center;justify-content:space-between;gap:1rem;
  padding:.9rem clamp(1rem,3vw,2rem);border-bottom:1px solid var(--line);
  background:#0B0F14E6;backdrop-filter:blur(10px);position:sticky;top:0;z-index:20}
.brand{display:flex;align-items:center;gap:.6rem;font-weight:700;letter-spacing:-.02em}
.brand svg{width:1.4rem;height:1.4rem;color:var(--accent)}
.top__right{display:flex;align-items:center;gap:.6rem}
.model{font-family:var(--f-mono);font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3)}
select{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);
  padding:.5rem .7rem;font-size:.85rem;min-height:2.5rem}

/* steps */
.step{display:none;padding:clamp(2rem,5vw,4rem) clamp(1rem,3vw,2rem) 5rem}
.step.is-active{display:block;animation:in .45s var(--ease) both}
@keyframes in{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.wrap{max-width:46rem;margin-inline:auto}
.wrap--wide{max-width:82rem}
.eyebrow{font-family:var(--f-mono);font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--accent)}
.lede{margin-top:1rem;color:var(--ink-2);max-width:44ch;font-size:1.02rem}

/* form */
.form{margin-top:2rem;display:grid;gap:1.4rem}
.grid2{display:grid;gap:1.4rem}
@media(min-width:44rem){.grid2{grid-template-columns:1fr 1fr}}
.field{display:grid;gap:.45rem}
.field>label{font-family:var(--f-mono);font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-2)}
.opt{color:var(--ink-3);text-transform:none;letter-spacing:0;font-family:var(--f-ui);font-size:.78rem}
input,textarea{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r);
  padding:.75rem .85rem;min-height:2.9rem;width:100%;transition:border-color .2s var(--ease)}
textarea{min-height:9rem;resize:vertical;line-height:1.5;font-size:.95rem}
input:hover,textarea:hover{border-color:#35455C}
input:focus,textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px #6EE7A82E}
.hint{font-family:var(--f-mono);font-size:.78rem;color:var(--ink-3)}
.err{font-size:.82rem;color:var(--danger);font-weight:600}
.err[hidden]{display:none}
.field[data-bad] input,.field[data-bad] textarea{border-color:var(--danger)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  min-height:2.9rem;padding:.7rem 1.2rem;border:1px solid transparent;border-radius:var(--r);
  font-weight:600;font-size:.92rem;cursor:pointer;transition:background .2s var(--ease),border-color .2s var(--ease),transform .12s var(--ease)}
.btn svg{width:1rem;height:1rem}
.btn:active{transform:translateY(1px)}
.btn--primary{background:var(--accent);color:var(--accent-ink)}
.btn--primary:hover{background:#8CF3BC}
.btn--primary:disabled{opacity:.45;cursor:not-allowed}
.btn--ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn--ghost:hover{border-color:var(--ink-3)}
.btn--sm{min-height:2.2rem;padding:.35rem .8rem;font-size:.82rem;background:var(--surface);border-color:var(--line)}
.btn--sm:hover:not(:disabled){border-color:var(--ink-3)}
.btn--sm:disabled{opacity:.4;cursor:not-allowed}
.row{display:flex;gap:.7rem;flex-wrap:wrap}

/* questions */
.loading{display:flex;align-items:center;gap:.7rem;margin-top:2rem;color:var(--ink-2);font-size:.95rem}
.spinner{width:1rem;height:1rem;border:2px solid #FFFFFF26;border-top-color:var(--accent);
  border-radius:50%;display:inline-block;animation:spin .8s linear infinite;flex:none}
@keyframes spin{to{transform:rotate(360deg)}}
@media(prefers-reduced-motion:reduce){.spinner{animation-duration:2.4s}.step.is-active{animation:none}}
.q{border:1px solid var(--line);background:var(--surface);border-radius:var(--r);
  padding:1.1rem 1.2rem;display:grid;gap:.8rem}
.q+.q{margin-top:1rem}
.q__q{font-weight:600;letter-spacing:-.01em;font-size:1.02rem}
.q__why{font-family:var(--f-mono);font-size:.78rem;color:var(--ink-3);letter-spacing:.02em}
.opts{display:grid;gap:.5rem}
.opt-row{display:flex;gap:.7rem;align-items:flex-start;padding:.6rem .7rem;border:1px solid var(--line-2);
  border-radius:8px;cursor:pointer;transition:border-color .18s var(--ease),background .18s var(--ease)}
.opt-row:hover{border-color:var(--ink-3);background:#1B2431}
.opt-row input{width:1.15rem;height:1.15rem;min-height:0;margin:.2rem 0 0;accent-color:var(--accent);flex:none}
.opt-row span{font-size:.93rem;color:var(--ink-2)}
.opt-row:has(input:checked){border-color:var(--accent);background:#6EE7A814}
.opt-row:has(input:checked) span{color:var(--ink)}
.q input[type=text]{font-size:.92rem}

/* generation */
.statusbar{display:flex;flex-wrap:wrap;gap:.5rem 1.2rem;justify-content:space-between;align-items:center;
  margin-top:1.4rem;padding:.7rem .9rem;border:1px solid var(--line);border-radius:var(--r);background:var(--surface)}
.statusbar__state{display:flex;align-items:center;gap:.55rem;font-size:.88rem;font-weight:600}
.statusbar__meta{font-family:var(--f-mono);font-size:.75rem;color:var(--ink-3);letter-spacing:.02em}
.is-done .statusbar__state{color:var(--accent)}
.is-fail .statusbar__state{color:var(--danger)}

.tabs{display:flex;align-items:center;gap:.5rem;margin-top:1.2rem;flex-wrap:wrap}
.tabs__spacer{flex:1 1 auto;min-width:.5rem}
.tab{background:none;border:1px solid transparent;border-radius:8px;padding:.4rem .8rem;
  font-size:.86rem;font-weight:600;color:var(--ink-3);cursor:pointer}
.tab.is-on{color:var(--ink);border-color:var(--line);background:var(--surface)}
.width select{min-height:2.2rem;padding:.3rem .6rem;font-size:.82rem}

.panel{margin-top:.9rem}
.frame{border:1px solid var(--line);border-radius:var(--r);background:#fff;overflow:hidden;
  height:min(74vh,860px);display:flex;justify-content:center}
#preview{width:100%;height:100%;border:0;background:#fff;transition:width .3s var(--ease)}
.code{margin:0;border:1px solid var(--line);border-radius:var(--r);background:#0D131B;
  padding:1rem;overflow:auto;height:min(74vh,860px);font-family:var(--f-mono);
  font-size:.76rem;line-height:1.65;color:#BFD0E2;white-space:pre-wrap;word-break:break-word}
.note{margin-top:1rem;border:1px solid var(--line);border-left:3px solid var(--accent);
  border-radius:var(--r);padding:.9rem 1rem;font-size:.88rem;color:var(--ink-2)}
.note.is-bad{border-left-color:var(--danger)}
.note b{color:var(--ink)}

/* --- narrow screens: the header must not wrap into three lines --- */
.brand span{white-space:nowrap}
.top__right{min-width:0}
.top__right select{max-width:min(52vw,22rem);text-overflow:ellipsis}
@media(max-width:34rem){
  .brand span{
    /* keep the mark, drop the word-mark — it wraps and eats the row */
    position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;
  }
  .model{display:none}
  .top{padding-inline:1rem}
  .top__right select{max-width:none;flex:1 1 auto}
  .tabs{gap:.4rem}
  .tabs__spacer{flex-basis:100%;min-width:100%;height:0}
}
@media(max-width:26rem){
  .row .btn,.form>.btn{width:100%}
}

/* --- published-site link --- */
.live{margin-top:1rem;border:1px solid var(--accent);background:#6EE7A814;border-radius:var(--r);
  padding:1rem 1.1rem;display:flex;flex-wrap:wrap;align-items:center;gap:.6rem 1rem}
.live[hidden]{display:none}
.live__label{font-family:var(--f-mono);font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;
  color:var(--accent);width:100%}
.live__url{font-family:var(--f-mono);font-size:.95rem;color:var(--ink);font-weight:500;
  border-bottom:1px solid #6EE7A866;padding-bottom:2px;word-break:break-all}
.live__url:hover{border-color:var(--accent)}
.live__note{width:100%;font-size:.82rem;color:var(--ink-3)}