/* Vendedor Fiscal — estilos compartidos */
:root{
  --paper:#f4f6f3;--card:#ffffff;--ink:#10201c;--muted:#5b6b66;--line:#dfe5e1;--line-strong:#c9d3ce;
  --brand:#0b3d34;--brand-2:#12594b;--mint:#d7efe6;--mint-ink:#0b5a47;
  --stamp:#c2410c;--stamp-soft:#fdeee4;
  --receipt:#fffdf8;--receipt-line:#e8e1d3;
  --ease-out:cubic-bezier(0.23,1,0.32,1);
  --radius:22px;
  --display:"Bricolage Grotesque",ui-sans-serif,system-ui,sans-serif;
  --body:"IBM Plex Sans",ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
}
@media (prefers-color-scheme:dark){:root{
  color-scheme:dark;
  --paper:#0b1210;--card:#121b18;--ink:#e9f0ed;--muted:#9aaba5;--line:#22302b;--line-strong:#2e3e38;
  --brand:#7fd6bd;--brand-2:#5cc3a6;--mint:#12302a;--mint-ink:#8fe0c8;
  --stamp:#ff8a4c;--stamp-soft:#2c1a10;
  --receipt:#161f1c;--receipt-line:#2a3632;
}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.6 var(--body);padding:0 16px;-webkit-font-smoothing:antialiased}
a{color:inherit}
p{margin:0}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:3px;border-radius:6px}

/* Encabezado */
.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:10;margin:0 -16px;padding:0 16px;
  background:color-mix(in srgb,var(--paper) 82%,transparent);backdrop-filter:saturate(1.4) blur(14px);-webkit-backdrop-filter:saturate(1.4) blur(14px);
  border-bottom:1px solid color-mix(in srgb,var(--line) 70%,transparent)}
.top-in{max-width:1080px;margin:0 auto;height:60px;display:flex;align-items:center;gap:20px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;font:700 17px/1 var(--display);letter-spacing:-.02em;color:var(--ink)}
.logo svg{width:28px;height:28px;flex:none}
.nav{display:flex;gap:4px;margin-left:auto}
.nav a{text-decoration:none;font-size:14px;font-weight:500;color:var(--muted);padding:8px 12px;border-radius:980px;transition:background-color 150ms ease,color 150ms ease}
.nav a[aria-current]{color:var(--ink);background:var(--card);box-shadow:0 0 0 1px var(--line)}
@media (hover:hover) and (pointer:fine){.nav a:not([aria-current]):hover{color:var(--ink)}}
@media (max-width:560px){.nav a{padding:8px 9px;font-size:13px}.logo span{display:none}}

/* Estructura */
.page{max-width:1080px;margin:0 auto;padding-block:48px 72px;display:grid;gap:56px}
.hero{display:grid;gap:18px;max-width:760px}
.eyebrow{display:inline-flex;align-items:center;gap:10px;width:fit-content;font:600 13px/1 var(--body);letter-spacing:.02em;color:var(--mint-ink);background:var(--mint);padding:8px 14px;border-radius:980px}
.eyebrow b{font:600 13px/1 var(--mono)}
.eyebrow s{opacity:.6}
h1{font:800 clamp(34px,6vw,60px)/1.02 var(--display);letter-spacing:-.035em;margin:0;text-wrap:balance}
h1 em{font-style:normal;color:var(--stamp)}
h2{font:700 clamp(24px,3.4vw,32px)/1.1 var(--display);letter-spacing:-.025em;margin:0;text-wrap:balance}
.lead{font-size:clamp(17px,2vw,19px);color:var(--muted);max-width:62ch}

.tool{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,440px);gap:24px;align-items:start}
@media (max-width:900px){.tool{grid-template-columns:1fr}}
.tool > .sticky{position:sticky;top:84px}
@media (max-width:900px){.tool > .sticky{position:static}}

.card{background:var(--card);border-radius:var(--radius);padding:28px;display:grid;gap:22px;box-shadow:0 1px 0 var(--line),0 12px 32px -18px rgba(16,32,28,.18)}
@media (max-width:560px){.card{padding:22px}}
.card h3{font:600 13px/1 var(--body);letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin:0}

/* Campos */
.field{display:grid;gap:8px}
.field > span{font-weight:600;font-size:15px}
.hint{font-size:13px;color:var(--muted);font-weight:400}
.money{position:relative}
.money::before{content:"$";position:absolute;left:16px;top:50%;transform:translateY(-50%);font:500 22px/1 var(--mono);color:var(--muted)}
.money input[type=number]{padding-left:38px}
.pct{position:relative}
.pct input[type=number]{padding-right:40px}
.pct::after{content:"%";position:absolute;right:16px;top:50%;transform:translateY(-50%);font:500 20px/1 var(--mono);color:var(--muted)}
input[type=number],input[type=email]{font:500 22px/1.2 var(--mono);letter-spacing:-.01em;padding:14px 16px;border:1px solid var(--line-strong);border-radius:14px;background:var(--paper);color:var(--ink);width:100%;
  transition:border-color 150ms ease,box-shadow 150ms ease;-moz-appearance:textfield;appearance:textfield}
input[type=email]{font:500 17px/1.2 var(--body)}
input::-webkit-outer-spin-button,input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
input[type=number]:focus,input[type=email]:focus{outline:none;border-color:var(--brand-2);box-shadow:0 0 0 4px color-mix(in srgb,var(--brand-2) 18%,transparent)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
@media (max-width:560px){.grid2{grid-template-columns:1fr}}

/* Deslizador */
.range-head{display:flex;justify-content:space-between;align-items:baseline;gap:12px}
.range-val{font:600 22px/1 var(--mono);color:var(--brand-2)}
input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:28px;background:transparent;margin:0;--p:20%}
input[type=range]::-webkit-slider-runnable-track{height:6px;border-radius:6px;background:linear-gradient(to right,var(--brand-2) var(--p),var(--line) var(--p))}
input[type=range]::-moz-range-track{height:6px;border-radius:6px;background:var(--line)}
input[type=range]::-moz-range-progress{height:6px;border-radius:6px;background:var(--brand-2)}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:24px;height:24px;border-radius:50%;background:var(--card);border:2px solid var(--brand-2);margin-top:-9px;box-shadow:0 2px 8px rgba(0,0,0,.18);transition:transform 150ms var(--ease-out)}
input[type=range]::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:var(--card);border:2px solid var(--brand-2)}
input[type=range]:active::-webkit-slider-thumb{transform:scale(1.12)}

/* Selector segmentado */
.seg{display:inline-grid;grid-auto-flow:column;grid-auto-columns:1fr;background:var(--paper);border:1px solid var(--line-strong);border-radius:980px;padding:4px;width:100%}
.seg input{position:absolute;opacity:0;pointer-events:none}
.seg label{text-align:center;font-weight:600;font-size:15px;padding:9px 12px;border-radius:980px;cursor:pointer;color:var(--muted);transition:background-color 180ms var(--ease-out),color 180ms ease}
.seg input:checked + label{background:var(--card);color:var(--ink);box-shadow:0 1px 3px rgba(0,0,0,.12),0 0 0 1px var(--line)}
.seg input:focus-visible + label{outline:2px solid var(--brand-2);outline-offset:2px}

/* Constancia (resultado) */
.receipt{position:relative;background:var(--receipt);border-radius:18px 18px 0 0;padding:26px 26px 30px;font-family:var(--mono);box-shadow:0 1px 0 var(--receipt-line),0 18px 40px -22px rgba(16,32,28,.35)}
.receipt::after{content:"";position:absolute;left:0;right:0;bottom:-12px;height:12px;
  background:radial-gradient(circle at 10px -2px,transparent 9px,var(--receipt) 9.5px) 0 0/20px 12px repeat-x}
.r-head{display:flex;justify-content:space-between;gap:12px;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);padding-bottom:14px;border-bottom:1px dashed var(--receipt-line)}
.r-title{font:700 15px/1.3 var(--display);letter-spacing:-.01em;text-transform:none;color:var(--ink)}
.r-hero{padding:20px 0 16px;border-bottom:1px dashed var(--receipt-line);display:grid;gap:6px}
.r-label{font:500 12px/1.2 var(--body);letter-spacing:.04em;text-transform:uppercase;color:var(--muted)}
.r-big{font:700 clamp(52px,8vw,76px)/1 var(--mono);letter-spacing:-.04em;color:var(--brand);font-variant-numeric:tabular-nums}
.r-big.bad{color:var(--stamp)}
.r-sub{font:400 14px/1.45 var(--body);color:var(--muted)}
.r-rows{list-style:none;margin:0;padding:14px 0 0;display:grid;gap:10px;font-size:14px}
.r-rows li{display:flex;align-items:baseline;gap:8px}
.r-rows li::after{content:none}
.r-rows .lbl{font-family:var(--body);color:var(--muted)}
.r-rows .dots{flex:1;border-bottom:1px dotted var(--line-strong);transform:translateY(-4px)}
.r-rows .val{font-weight:600;font-variant-numeric:tabular-nums}
.r-rows li.tot{margin-top:6px;padding-top:12px;border-top:1px solid var(--ink);font-size:16px}
.r-rows li.tot .lbl{color:var(--ink);font-weight:600}
.stamp{position:absolute;top:66px;right:18px;transform:rotate(-8deg);border:2px solid var(--stamp);color:var(--stamp);border-radius:8px;padding:5px 10px;font:700 12px/1.1 var(--mono);letter-spacing:.1em;text-transform:uppercase;opacity:.85;pointer-events:none;background:color-mix(in srgb,var(--receipt) 70%,transparent)}

.note,.ok{border-radius:14px;padding:14px 16px;font:400 14px/1.5 var(--body);margin-top:28px}
.note{background:var(--stamp-soft);color:var(--stamp)}
.ok{background:var(--mint);color:var(--mint-ink)}

/* Botones */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;font:600 16px/1 var(--body);border:0;border-radius:980px;padding:16px 24px;cursor:pointer;text-decoration:none;text-align:center;
  transition:transform 160ms var(--ease-out),background-color 150ms ease,box-shadow 150ms ease}
.btn:active{transform:scale(0.97)}
.btn-main{background:#25d366;color:#06301a}
.btn-main svg{width:20px;height:20px}
.btn-dark{background:var(--ink);color:var(--paper)}
.btn-ghost{background:transparent;color:inherit;box-shadow:inset 0 0 0 1.5px currentColor}
@media (hover:hover) and (pointer:fine){.btn-main:hover{background:#2fe072}.btn-dark:hover{background:var(--brand)}}

/* Banda de acción */
.band{background:var(--brand);color:#eaf6f1;border-radius:28px;padding:clamp(28px,5vw,48px);display:grid;grid-template-columns:1.2fr 1fr;gap:32px;align-items:center}
@media (prefers-color-scheme:dark){.band{background:#0f2e27}}
.band h2{color:#fff}
.band p{color:#b9d9cf}
.band .steps{list-style:none;margin:0;padding:0;display:grid;gap:14px;counter-reset:s}
.band .steps li{display:grid;grid-template-columns:32px 1fr;gap:12px;align-items:start;font-size:15px;color:#d6ece5;counter-increment:s}
.band .steps li::before{content:counter(s);display:grid;place-items:center;width:32px;height:32px;border-radius:50%;background:rgba(255,255,255,.1);font:600 14px/1 var(--mono);color:#fff}
@media (max-width:800px){.band{grid-template-columns:1fr}}

.split{display:grid;grid-template-columns:1fr 1fr;gap:24px}
@media (max-width:800px){.split{grid-template-columns:1fr}}
.form-row{display:flex;gap:10px}
.form-row input{flex:1;min-width:0}
@media (max-width:480px){.form-row{flex-direction:column}}
#msg{font-size:14px;min-height:1.2em;color:var(--mint-ink)}

/* Preguntas */
.faq{display:grid;gap:0}
.faq details{border-top:1px solid var(--line)}
.faq details:last-child{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;gap:16px;align-items:center;padding:20px 0;font:600 17px/1.35 var(--body)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";flex:none;width:12px;height:12px;border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);transform:rotate(45deg) translateY(-3px);transition:transform 200ms var(--ease-out)}
.faq details[open] summary::after{transform:rotate(-135deg) translateY(-3px)}
.faq details p{padding:0 0 20px;color:var(--muted);max-width:68ch}

/* Pie */
.foot{border-top:1px solid var(--line);padding-top:28px;display:grid;gap:10px;font-size:13px;color:var(--muted)}
.foot .logo{font-size:15px}

/* Entrada (solo una vez al cargar) */
@media (prefers-reduced-motion:no-preference){
  .rise{animation:rise 520ms var(--ease-out) both}
  .rise:nth-child(2){animation-delay:60ms}.rise:nth-child(3){animation-delay:120ms}.rise:nth-child(4){animation-delay:180ms}
  @keyframes rise{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
}
@media (prefers-reduced-motion:reduce){.btn,.faq summary::after,.seg label{transition:none}}