:root{--bg:#f6f8fb;--card:#fff;--ink:#1b2433;--muted:#5b6678;--brand:#0b5cad;--brand-d:#08467f;--ok:#0f7b4f;--warn:#a15c00;--bad:#b42318;--line:#dfe5ee;--radius:12px}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.55;font-size:16px}
a{color:var(--brand)}
a:hover{color:var(--brand-d)}
.wrap{max-width:1040px;margin:0 auto;padding:0 16px}
header.site{background:#fff;border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px;padding-top:12px;padding-bottom:12px}
.logo{font-weight:700;font-size:1.05rem;color:var(--ink);text-decoration:none}
.logo span{color:var(--brand)}
nav.main a{margin-left:14px;text-decoration:none;font-weight:500;font-size:.95rem}
nav.main a:first-child{margin-left:0}
.hero{padding:28px 0 8px}
.hero h1{font-size:1.7rem;line-height:1.2;margin:0 0 8px}
.hero p{color:var(--muted);margin:0 0 12px}
.disclaimer{background:#fff7e6;border:1px solid #f3d08a;border-left:5px solid var(--warn);border-radius:var(--radius);padding:12px 14px;margin:14px 0;font-size:.95rem}
.disclaimer strong{display:block;margin-bottom:2px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;margin:16px 0;box-shadow:0 1px 2px rgba(16,24,40,.04)}
.card h2{margin-top:0;font-size:1.25rem}
.grid{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:900px){.grid{grid-template-columns:1.05fr .95fr}.hero h1{font-size:2.1rem}}
fieldset{border:1px solid var(--line);border-radius:10px;padding:12px 14px;margin:0 0 14px}
legend{font-weight:600;padding:0 6px}
label{display:block;font-weight:500;margin:10px 0 4px;font-size:.95rem}
.hint{display:block;color:var(--muted);font-size:.83rem;font-weight:400;margin-top:2px}
input[type=number],input[type=email],input[type=text],select{width:100%;padding:10px 12px;border:1px solid #c7d0dd;border-radius:8px;font-size:1rem;background:#fff;color:var(--ink)}
input:focus,select:focus{outline:3px solid #b8d6f5;border-color:var(--brand)}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.check{display:flex;gap:8px;align-items:flex-start;font-weight:400;margin:10px 0}
.check input{margin-top:4px;width:18px;height:18px;flex:0 0 auto}
.radio-group{display:flex;gap:10px;flex-wrap:wrap}
.radio-group label{display:flex;gap:6px;align-items:center;border:1px solid #c7d0dd;border-radius:8px;padding:8px 12px;margin:0;font-weight:500;cursor:pointer}
button,.btn{display:inline-block;background:var(--brand);color:#fff;border:0;border-radius:8px;padding:12px 18px;font-size:1rem;font-weight:600;cursor:pointer;text-decoration:none;text-align:center}
button:hover,.btn:hover{background:var(--brand-d);color:#fff}
.btn.block,button.block{width:100%}
.result-main{border-radius:10px;padding:14px;text-align:center;margin-bottom:12px;background:#eef5fd}
.result-main .lbl{color:var(--muted);font-size:.9rem}
.result-main .big{font-size:2rem;font-weight:800}
.result-main.pagar .big{color:var(--bad)}
.result-main.devolver .big{color:var(--ok)}
table.breakdown{width:100%;border-collapse:collapse;font-size:.94rem}
table.breakdown td{padding:7px 4px;border-bottom:1px solid var(--line)}
table.breakdown td:last-child{text-align:right;white-space:nowrap;font-variant-numeric:tabular-nums}
table.breakdown tr.total td{font-weight:700;border-top:2px solid var(--ink)}
table.breakdown tr.sub td{color:var(--muted);font-size:.88rem;padding-left:14px}
.kpis{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:10px 0}
.kpi{background:#f3f6fa;border-radius:8px;padding:10px;text-align:center}
.kpi b{display:block;font-size:1.2rem}
.avisos{color:var(--warn);font-size:.9rem}
.lead{background:linear-gradient(135deg,#0b5cad,#0a3f75);color:#fff}
.lead h2,.lead label{color:#fff}
.lead .hint,.lead .notice{color:#dbe8f7}
.lead a{color:#fff}
.lead button{background:#fff;color:var(--brand-d)}
.lead button:hover{background:#e6eefa;color:var(--brand-d)}
.notice{font-size:.8rem;border-top:1px solid rgba(255,255,255,.3);margin-top:12px;padding-top:10px}
.notice table{width:100%;border-collapse:collapse}
.notice td{padding:3px 4px;vertical-align:top}
.err{color:#ffd0cc;font-size:.88rem;min-height:1em}
.sources li{margin-bottom:6px;word-break:break-word}
.muted{color:var(--muted)}
.small{font-size:.85rem}
.pending{background:#ffe9e9;color:#8a1c1c;padding:0 4px;border-radius:4px;font-weight:600}
article.doc{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;margin:18px 0}
article.doc h1{font-size:1.7rem;line-height:1.2}
article.doc h2{font-size:1.3rem;margin-top:1.6em}
article.doc h3{font-size:1.08rem}
article.doc table{border-collapse:collapse;width:100%;font-size:.92rem;margin:10px 0}
article.doc th,article.doc td{border:1px solid var(--line);padding:6px 8px;text-align:left;vertical-align:top}
article.doc th{background:#f3f6fa}
.cta-box{background:#eef5fd;border:1px solid #c9def5;border-radius:10px;padding:14px;margin:18px 0}
footer.site{border-top:1px solid var(--line);background:#fff;margin-top:30px;padding:18px 0;font-size:.88rem;color:var(--muted)}
footer.site a{margin-right:14px}
.updated{font-size:.85rem;color:var(--muted)}
@media print{header.site,footer.site,.lead,nav{display:none}}
/* --- Generador de facturas --- */
textarea{width:100%;padding:10px 12px;border:1px solid #c7d0dd;border-radius:8px;font:inherit;font-size:1rem;background:#fff;color:var(--ink);resize:vertical}
input[type=date]{width:100%;padding:9px 12px;border:1px solid #c7d0dd;border-radius:8px;font-size:1rem;background:#fff;color:var(--ink)}
textarea:focus,input[type=date]:focus{outline:3px solid #b8d6f5;border-color:var(--brand)}
.notice-vf{background:#eef5fd;border:1px solid #c9def5;border-left:5px solid var(--brand);border-radius:var(--radius);padding:12px 14px;margin:10px 0;font-size:.93rem}
.notice-vf strong{display:block;margin-bottom:2px}
@media(min-width:900px){.grid.gen{grid-template-columns:1.25fr .75fr}}
.sticky{position:static}
@media(min-width:900px){.sticky{position:sticky;top:12px}}
.lineas-wrap{overflow-x:auto}
table.lineas{width:100%;border-collapse:collapse;font-size:.92rem;margin:12px 0}
table.lineas th{font-size:.78rem;color:var(--muted);text-align:left;padding:4px;font-weight:600}
table.lineas td{padding:4px;vertical-align:top}
table.lineas input[type=text],table.lineas select,table.lineas textarea{padding:8px;font-size:.95rem}
table.lineas .l-cant{width:64px}table.lineas .l-precio{width:96px}table.lineas .l-dto{width:58px}table.lineas .l-iva{width:92px}
table.lineas .l-desc{min-width:160px}
table.lineas .num{text-align:right;white-space:nowrap;font-variant-numeric:tabular-nums;padding-top:12px}
table.lineas .l-irpf{width:18px;height:18px;margin-top:10px}
table.lineas.sin-iva-col .col-iva{display:none}
.l-del{background:#fff;color:var(--bad);border:1px solid #f0c4c0;padding:6px 10px;font-size:1.1rem;line-height:1}
.l-del:hover{background:#fdecea;color:var(--bad)}
button.ghost,.btn.ghost{background:#fff;color:var(--brand);border:1px solid #c9def5}
button.ghost:hover{background:#eef5fd;color:var(--brand-d)}
.small-btn{padding:6px 10px;font-size:.85rem}
.btn-row{display:flex;gap:8px;flex-wrap:wrap;margin:8px 0}
.btn-row button{flex:1 1 auto}
button:disabled{background:#9aa7b8;cursor:not-allowed}
.val{border-radius:8px;padding:10px 12px;margin:10px 0;font-size:.88rem}
.val ul{margin:6px 0 0;padding-left:18px}
.val.bad{background:#fdecea;border:1px solid #f5c2bd;color:#7a1a12}
.val.warn{background:#fff7e6;border:1px solid #f3d08a;color:#6b3d00}
.val.ok{background:#e8f6ef;border:1px solid #b5e2cb;color:#0b5a3a}
.nifmsg.ok{color:var(--ok)}.nifmsg.warn{color:var(--warn)}
.timeline{border-left:3px solid var(--brand);margin:14px 0;padding-left:16px}
.timeline li{margin:0 0 10px;list-style:none}
.timeline li b{display:block}
.estado{display:inline-block;font-size:.75rem;font-weight:700;border-radius:4px;padding:1px 6px;margin-left:6px;vertical-align:middle}
.estado.vigente{background:#e8f6ef;color:#0b5a3a}.estado.anuncio{background:#fff7e6;color:#6b3d00}.estado.superado{background:#eef1f5;color:#5b6678}
/* Móvil: líneas en formato tarjeta */
@media(max-width:640px){
  nav.main a{margin-left:10px;font-size:.88rem}
  .row2{grid-template-columns:1fr}
  table.lineas thead{display:none}
  table.lineas,table.lineas tbody,table.lineas tr,table.lineas td{display:block;width:100%}
  table.lineas tr{border:1px solid var(--line);border-radius:10px;padding:8px;margin-bottom:10px;display:grid;grid-template-columns:1fr 1fr;gap:4px 8px;position:relative}
  table.lineas td{padding:0}
  table.lineas td:first-child{grid-column:1/-1}
  table.lineas td[data-l]:before{content:attr(data-l);display:block;font-size:.75rem;color:var(--muted)}
  table.lineas .l-cant,table.lineas .l-precio,table.lineas .l-dto,table.lineas .l-iva{width:100%}
  table.lineas td:last-child{position:absolute;top:6px;right:6px;width:auto}
  table.lineas td:first-child textarea{margin-right:40px;width:calc(100% - 44px)}
  table.lineas .num{padding-top:0;text-align:left;font-weight:700}
  table.lineas.sin-iva-col .col-iva{display:none}
}
@media print{.card:not(#resumen),.hero,#guia-gratis,.btn-row,#btnPdf{display:none}}
.grid.gen>div{min-width:0}
@media(min-width:900px){.sticky{max-height:calc(100vh - 24px);overflow:auto}}
nav.main{display:flex;flex-wrap:wrap;gap:4px 14px;max-width:100%}
nav.main a{margin-left:0}
nav.main a[aria-current=page]{text-decoration:underline;text-underline-offset:4px}
@media(max-width:640px){header.site .wrap{flex-direction:column;align-items:flex-start}nav.main{gap:4px 12px;width:100%}}
[hidden]{display:none!important}