/* Brief de stand · Expoagro 2027
   Layout: banda negra de marca; debajo, cuatro bloques numerados. En desktop cada bloque es un
   riel lateral (número + título, sticky) y una columna de campos; en mobile el riel queda arriba. */
:root{
  --orange:#F6A018;      /* acento de marca: fondos, barra de progreso, botón */
  --orange-ink:#8A5300;  /* naranja para texto chico sobre blanco (AA 6,3:1) */
  --orange-ui:#C97C00;   /* naranja para bordes, controles y números grandes (3,3:1) */
  --ink:#1A1A1A; --muted:#5C5852; --bg:#FFFFFF; --surface:#F5F4F1; --line:#E4E1DC; --line-strong:#C9C5BE;
  --field:#FFFFFF; --band:#0A0A0A; --band-fg:#FFFFFF; --band-muted:#D6D2CC;
  --focus:#B36A00; --err:#B3261E; --on-orange:#0A0A0A; --tint:#FEF3E0;
  --font:'Rubik',system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --radius:8px; --max:980px;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --orange-ink:#FDB94A; --orange-ui:#F6A018; --ink:#F2F2F2; --muted:#ADA8A1; --bg:#0F0E0D; --surface:#1A1918; --line:#2C2A28;
  --line-strong:#4A4744; --field:#151413; --focus:#FDB94A; --err:#F2B8B5; --tint:#2E2312; color-scheme:dark}}
:root[data-theme="dark"]{
  --orange-ink:#FDB94A; --orange-ui:#F6A018; --ink:#F2F2F2; --muted:#ADA8A1; --bg:#0F0E0D; --surface:#1A1918; --line:#2C2A28;
  --line-strong:#4A4744; --field:#151413; --focus:#FDB94A; --err:#F2B8B5; --tint:#2E2312; color-scheme:dark}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{background:var(--bg);color:var(--ink);font-family:var(--font);font-size:16px;line-height:1.6;margin:0}
.wrap{max-width:var(--max);margin:0 auto;padding-left:max(20px,env(safe-area-inset-left,0px));padding-right:max(20px,env(safe-area-inset-right,0px))}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}

/* Barra de progreso: fina, fija arriba */
.progress{position:fixed;inset:0 0 auto;height:3px;z-index:20;background:transparent;pointer-events:none}
.progress span{display:block;height:100%;width:0;background:var(--orange);transition:width .35s ease}

/* Banda de marca */
header.band{background:var(--band);color:var(--band-fg)}
header.band .wrap{padding-block:40px 44px;display:flex;flex-direction:column;gap:20px}
header.band .logo{margin-bottom:12px}
.logo{width:168px;height:auto;mix-blend-mode:lighten;display:block}
.meta{font-size:15px;color:var(--band-muted);margin:0;padding-top:16px;border-top:1px solid #2A2A2A;max-width:56ch}
.meta strong{color:var(--orange);font-weight:600}
h1{font-size:clamp(40px,8vw,64px);font-weight:900;line-height:1;margin:0;letter-spacing:-.01em;text-wrap:balance}
.lead{font-size:18px;font-weight:300;color:var(--band-muted);max-width:56ch;margin:0}

/* Bloques */
main .wrap{padding-block:8px 64px}
.blk{display:grid;grid-template-columns:1fr;gap:20px;padding-block:40px;border-top:1px solid var(--line)}
.blk:first-child{border-top:0}
.rail{display:flex;flex-direction:column;gap:6px}
.rail .num{font-size:15px;font-weight:700;color:var(--orange-ink);font-variant-numeric:tabular-nums;letter-spacing:.04em}
h2{font-size:clamp(24px,4.6vw,30px);font-weight:700;line-height:1.15;margin:0;text-wrap:balance}
.rail .sub{margin:0;color:var(--muted);font-size:15px;max-width:34ch}
.body{display:flex;flex-direction:column;gap:28px;min-width:0}
@media (min-width:880px){
  .blk{grid-template-columns:240px minmax(0,1fr);gap:56px;padding-block:56px}
  .rail{position:sticky;top:32px;align-self:start}
  .rail .num{font-size:56px;font-weight:900;line-height:1;letter-spacing:-.02em;margin-bottom:10px;color:var(--orange-ui)}
  .body{max-width:620px}
}

/* Campos */
.field{display:flex;flex-direction:column;gap:10px;min-width:0;border:0;margin:0;padding:0}
.field>label,.field>legend{font-weight:500;font-size:16px;padding:0}
.field>legend{margin-bottom:10px}
.req{color:var(--orange-ink);font-weight:700;margin-left:3px}
.hint{font-size:14px;font-weight:400;color:var(--muted);margin:0;line-height:1.5}
.multi{font-size:14px;color:var(--muted);margin:-4px 0 0}
input[type=text],input[type=email],input[type=tel],textarea{
  font:400 16px/1.4 var(--font);color:var(--ink);background:var(--field);border:1px solid var(--line-strong);
  border-radius:var(--radius);padding:13px 14px;min-height:50px;width:100%;transition:border-color .15s}
input:hover,textarea:hover{border-color:var(--muted)}
textarea{min-height:110px;resize:vertical}
input:focus-visible,textarea:focus-visible{outline:2px solid var(--focus);outline-offset:1px;border-color:var(--focus)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:28px 20px}
@media (max-width:600px){.grid2{grid-template-columns:1fr}}

/* Opciones (radio y checkbox como chips) */
.opts{display:flex;flex-wrap:wrap;gap:10px}
.opts.col{flex-direction:column}
.opt{position:relative}
.opt input{position:absolute;opacity:0;width:1px;height:1px}
.opt span{display:flex;align-items:center;gap:8px;min-height:46px;border:1px solid var(--line-strong);border-radius:var(--radius);
  padding:10px 16px;font-size:15px;line-height:1.35;cursor:pointer;background:var(--field);transition:background .15s,border-color .15s}
.opt span:hover{border-color:var(--muted)}
.opt input:checked+span{border-color:var(--orange-ui);background:var(--tint);font-weight:500}
.opt input:focus-visible+span{outline:2px solid var(--focus);outline-offset:2px}
.opt input[type=checkbox]+span::before{content:"";flex:none;width:16px;height:16px;border:1.5px solid var(--line-strong);border-radius:4px;background:var(--field)}
.opt input[type=checkbox]:checked+span::before{border-color:var(--orange-ui);background:var(--orange-ui)
  url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M3.5 8.5l3 3 6-7' fill='none' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/12px no-repeat}
.opt input[type=radio]+span::before{content:"";flex:none;width:16px;height:16px;border:1.5px solid var(--line-strong);border-radius:50%;background:var(--field)}
.opt input[type=radio]:checked+span::before{border-color:var(--orange-ui);background:var(--orange-ui);box-shadow:inset 0 0 0 3px var(--field)}
.opts.col .opt span{width:100%}

/* Nota informativa */
.note{background:var(--surface);border-radius:var(--radius);padding:14px 16px;font-size:15px;line-height:1.55;color:var(--ink);margin:0}

/* Errores */
.err-msg{color:var(--err);font-size:15px;margin:0}
.field.invalid input,.field.invalid .opt span{border-color:var(--err)}

/* Envío */
.actions{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:28px}
.saved{font-size:14px;color:var(--muted);margin:0}
.btn{font:600 16px/1 var(--font);border-radius:var(--radius);min-height:52px;padding:0 28px;cursor:pointer;border:1px solid transparent}
.btn.primary{background:var(--orange);color:var(--on-orange)}
.btn.primary:hover{background:#FDB94A}
.btn:disabled{opacity:.7;cursor:progress}
.btn:focus-visible{outline:2px solid var(--focus);outline-offset:3px}
@media (max-width:600px){.btn.primary{width:100%}}

/* Gracias */
#out[hidden]{display:none}
.thanks{display:flex;flex-direction:column;gap:16px;padding-block:56px 24px;max-width:620px}
.thanks .mark{width:48px;height:48px;border-radius:50%;background:var(--orange);display:grid;place-items:center}
.thanks h2{font-size:clamp(28px,5vw,36px)}
.thanks p{margin:0}
.thanks a{color:var(--orange-ink);font-weight:500}

footer{border-top:1px solid var(--line)}
footer .wrap{padding-block:24px 32px;font-size:14px;color:var(--muted);display:flex;flex-wrap:wrap;gap:6px 24px;justify-content:space-between}
footer b{color:var(--orange-ink);font-weight:700}

@media (prefers-reduced-motion:reduce){*{transition:none!important}}