/* ALSES V3. Concepto: libro contable. Hojas rayadas, doble raya de total y punto oro de la marca. */
:root{
  color-scheme:light;
  --navy:#13294b;--ink:#13294b;--night:#0b1b33;--band:#0b1b33;
  --paper:#f6f4ef;--surface:#fffefa;--gold:#c8a24a;--muted:#5b6475;
  --line:#13294b30;--rule:#13294b14;--shadow:#13294b1f;
  --ease:cubic-bezier(.16,1,.3,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:28px}
body{margin:0;background:var(--paper);color:var(--ink);font:18px/1.6 'Source Sans 3',sans-serif}
h1,h2,h3,p{margin:0}
h1,h2,h3{font-family:Montserrat,sans-serif;line-height:1.08;letter-spacing:-.045em;text-wrap:balance}
h2{font-size:clamp(36px,4.6vw,64px);font-weight:750}
h3{font-size:24px;font-weight:650}
p{text-wrap:pretty}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
img{max-width:100%;height:auto;display:block}
::selection{background:var(--gold);color:var(--night)}
:focus-visible{outline:3px solid var(--gold);outline-offset:5px}
.container{width:min(1320px,calc(100% - 112px));margin-inline:auto}
.section{padding-block:112px 128px}
/* Punto oro decorativo: pseudoelemento para que no cuente como texto de bajo contraste. */
.dot:after{content:".";color:var(--gold)}
.eyebrow{font-size:12px;letter-spacing:.17em;text-transform:uppercase;font-weight:600;margin-bottom:24px}
.skip-link{position:fixed;top:-100px;left:20px;padding:12px;background:var(--gold);z-index:4}
.skip-link:focus{top:12px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* Encabezado */
.header{height:84px;background:var(--paper)}
.header-inner{display:flex;align-items:center;height:100%;gap:28px}
.brand{display:flex;align-items:center;gap:11px}
.brand>span{font-family:Montserrat,sans-serif;font-size:28px;font-weight:800;letter-spacing:.025em;line-height:1.1}
.brand small{display:block;font-size:8px;letter-spacing:.1em;margin-top:5px}
.brand img{width:38px;height:44px}
.header nav{display:flex;gap:27px;align-items:center;font-size:14px;font-weight:600}
.header nav a{padding-block:10px;position:relative}
.header nav a:after{content:'';position:absolute;left:0;bottom:0;width:100%;height:2px;background:var(--gold);transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease)}
.header nav a:hover:after{transform:scaleX(1)}
.client-link{border-left:1px solid var(--line);padding-left:25px}
.menu-toggle{display:none}
.header nav{margin-left:auto}
.theme-toggle{display:inline-flex;align-items:center;gap:10px;min-height:44px;padding:8px 0 8px 22px;border:0;border-left:1px solid var(--line);background:transparent;color:var(--ink);font-size:14px;font-weight:600;white-space:nowrap}
.theme-switch{position:relative;width:34px;height:18px;border:1.5px solid var(--ink)}
.theme-switch:after{content:'';position:absolute;top:2px;left:2px;width:11px;height:11px;background:var(--ink);transition:transform .3s var(--ease)}
.theme-toggle[aria-pressed="true"] .theme-switch{border-color:var(--gold)}
.theme-toggle[aria-pressed="true"] .theme-switch:after{transform:translateX(16px);background:var(--gold)}
.legal-header .text-link{margin-left:auto}

/* Botones y enlaces */
.button{display:inline-flex;align-items:center;justify-content:center;gap:26px;padding:15px 22px;min-height:54px;border:1px solid var(--ink);border-radius:0;font-size:15px;font-weight:600;line-height:1.4;white-space:nowrap;transition:background .3s var(--ease),transform .3s var(--ease)}
.button:hover{transform:translateY(-2px)}
.button:active{transform:translateY(1px)}
.primary{background:var(--ink);color:var(--paper)}
.primary:hover{background:var(--night);color:#f6f4ef}
.button span{font-size:19px}
.text-link{display:inline-flex;gap:14px;align-items:center;font-size:15px;font-weight:600;text-decoration:underline;text-decoration-color:var(--gold);text-decoration-thickness:2px;text-underline-offset:7px;transition:gap .3s var(--ease)}
.text-link:hover{gap:20px}

/* Portada: copia a la izquierda, emblema con la ficha de vencimiento encimada a la derecha */
.hero{display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:center;padding-block:48px 104px}
.hero h1{font-size:clamp(52px,6.4vw,96px);font-weight:750;line-height:.98;letter-spacing:-.065em}
.hero-description{font-size:20px;line-height:1.5;max-width:36ch;margin-top:28px;color:var(--muted)}
.actions{display:flex;gap:28px;align-items:center;margin-top:36px;flex-wrap:wrap}
.hero-visual{position:relative;justify-self:end;width:100%;max-width:470px}
/* El emblema abre la ficha de vencimiento: sale desde atrás del emblema hacia la izquierda */
.emblem-button{display:grid;justify-items:end;gap:14px;width:100%;padding:0;border:0;background:none;color:var(--ink);cursor:pointer}
.hero-emblem{width:86%;pointer-events:none;transition:transform .5s var(--ease)}
.emblem-button:hover .hero-emblem{transform:scale(1.02) rotate(-1deg)}
.emblem-hint{display:inline-flex;gap:12px;align-items:center;font-size:14px;font-weight:600;border-bottom:2px solid var(--gold);padding-bottom:4px}
.emblem-hint span{font-size:22px;line-height:1;transition:transform .3s var(--ease)}
.emblem-button[aria-expanded="true"] .emblem-hint span{transform:rotate(45deg)}
.deadline{position:absolute;left:-56px;bottom:56px;width:min(330px,100%);background:var(--surface);padding:22px 24px 20px;border-top:3px solid var(--gold);box-shadow:0 24px 48px -20px var(--shadow)}
.deadline[hidden]{display:none}
/* Con mouse, basta pasar sobre el emblema; en pantallas táctiles y con teclado se abre al tocar (site.js). */
@media(hover:hover){
  .hero-visual:hover .deadline[hidden]{display:block}
  .hero-visual:hover .emblem-hint span{transform:rotate(45deg)}
}
@keyframes slide-out{from{opacity:0;transform:translateX(120px) scale(.92)}}
.deadline-label{font-size:13px;font-weight:600;letter-spacing:.02em;color:var(--muted)}
.deadline-date{font:700 27px/1.15 Montserrat,sans-serif;letter-spacing:-.04em;margin-top:8px}
.deadline-meta{font-size:16px;margin-top:6px;font-variant-numeric:tabular-nums}
.deadline-note{font-size:13px;line-height:1.45;color:var(--muted);margin-top:14px;padding-top:12px;border-top:1px solid var(--line)}

/* Servicios: renglones de libro con doble raya de cierre */
.section-heading{max-width:760px;margin-bottom:56px}
.section-heading>p{max-width:56ch;color:var(--muted);margin-top:22px}
.ledger{border-top:1px solid var(--ink);border-bottom:4px double var(--ink)}
.service{position:relative;isolation:isolate;display:grid;grid-template-columns:minmax(260px,1fr) 1.15fr auto;gap:40px;align-items:baseline;padding:30px 0;border-top:1px solid var(--line)}
.service:first-child{border-top:0}
.service:before{content:'';position:absolute;inset:0 -24px;background:var(--surface);opacity:0;z-index:-1;transition:opacity .3s var(--ease)}
.service:hover:before{opacity:1}
.service h3{font-size:clamp(26px,2.7vw,38px);letter-spacing:-.05em}
.service p{color:var(--muted);font-size:17px;max-width:48ch;line-height:1.55}
.service-action{display:inline-flex;gap:12px;align-items:center;min-height:44px;font-size:15px;font-weight:600;white-space:nowrap;transition:color .3s var(--ease)}
.service-action span[aria-hidden]{display:inline-block;transition:transform .3s var(--ease)}
.service:hover .service-action span[aria-hidden]{transform:translate(3px,-3px);color:var(--gold)}

/* Sistema: única franja azul, recorrido de la información en cinco tramos */
.flow{background:var(--band);color:#f6f4ef;padding-block:112px 120px}
.flow .eyebrow{color:var(--gold)}
.flow h2{max-width:15ch}
.flow-intro{max-width:52ch;margin-top:24px;color:#c9d2df;font-size:19px}
.flow-steps{list-style:none;padding:0;margin:72px 0 0;display:grid;grid-template-columns:repeat(5,1fr)}
.flow-steps li{position:relative;padding:34px 28px 0 0;border-top:1px solid #f6f4ef40}
.flow-steps li:before{content:'';position:absolute;top:-6px;left:0;width:11px;height:11px;background:var(--gold);transform:rotate(45deg)}
.flow-steps li:not(:last-child):after{content:'→';position:absolute;top:-17px;right:14px;color:var(--gold);font-size:20px}
.flow-steps h3{font-size:22px}
.flow-steps p{font-size:16px;color:#c9d2df;margin-top:12px;max-width:24ch}

/* Finanzas: una hoja rayada */
.financial{display:grid;grid-template-columns:.9fr 1.1fr;gap:96px;align-items:center}
.financial h2{max-width:13ch}
.financial-copy>p{max-width:44ch;margin:26px 0 30px;color:var(--muted)}
.sheet{background:var(--surface) repeating-linear-gradient(transparent 0 35px,var(--rule) 35px 36px);padding:34px 44px 38px 64px;position:relative;box-shadow:0 30px 60px -30px var(--shadow);transform:rotate(-1deg)}
.sheet:before{content:'';position:absolute;top:0;bottom:0;left:40px;border-left:1px solid var(--gold)}
.sheet-title{font:700 13px/1 Montserrat,sans-serif;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);padding-bottom:20px}
.sheet article{padding:22px 0;border-top:1px solid var(--line)}
.sheet article:last-child{border-bottom:4px double var(--ink)}
.sheet h3{font-size:clamp(24px,2.3vw,32px)}
.sheet strong{display:block;font-size:16px;font-weight:600;margin-top:8px}
.sheet p{color:var(--muted);font-size:17px;margin-top:4px}

/* Nosotros: texto y beneficios a la izquierda, proceso vertical a la derecha */
.about{display:grid;grid-template-columns:1.1fr .9fr;gap:96px;border-top:1px solid var(--line)}
.about-logo{width:96px;height:96px;object-fit:contain;margin-bottom:32px}
.about h2{font-size:clamp(34px,3.6vw,52px);max-width:14ch}
.about-heading>p{max-width:48ch;color:var(--muted);margin-top:24px}
.benefits{margin-top:48px;display:grid;gap:26px}
.benefits article{padding-left:22px;border-left:3px solid var(--gold)}
.benefits h3{font-size:22px}
.benefits p{color:var(--muted);margin-top:8px;font-size:17px;max-width:48ch}
.process{align-self:end;background:var(--surface);padding:44px 44px 36px}
.process-intro{font:600 24px/1.25 Montserrat,sans-serif;letter-spacing:-.04em;margin-bottom:34px}
.steps{list-style:none;padding:0;margin:0}
.steps li{position:relative;padding:0 0 30px 34px;border-left:1px solid var(--line);margin-left:6px}
.steps li:last-child{border-left-color:transparent;padding-bottom:0}
.steps li:before{content:'';position:absolute;left:-7px;top:6px;width:13px;height:13px;border-radius:50%;background:var(--paper);border:2px solid var(--gold)}
.steps li:last-child:before{background:var(--gold)}
.steps h3{font-size:20px}
.steps p{font-size:17px;color:var(--muted);margin-top:6px}

/* Preguntas */
.faq{display:grid;grid-template-columns:.8fr 1.4fr;gap:96px;border-top:1px solid var(--line)}
.faq-heading>p{color:var(--muted);margin:24px 0}
.faq details{border-bottom:1px solid var(--line)}
.faq details:first-child{border-top:1px solid var(--ink)}
.faq summary{font:650 clamp(19px,1.7vw,23px)/1.3 Montserrat,sans-serif;letter-spacing:-.03em;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:22px;list-style:none;padding-block:24px;transition:color .3s var(--ease)}
.faq summary:hover{color:var(--muted)}
.faq summary::-webkit-details-marker{display:none}
.faq summary>span{font:400 30px/1 'Source Sans 3',sans-serif;transition:transform .3s var(--ease)}
.faq details[open] summary>span{transform:rotate(45deg)}
.faq details p{font-size:17px;color:var(--muted);padding-bottom:24px;max-width:62ch}

/* Contacto */
.contact{border-top:1px solid var(--line)}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:96px}
.contact h2{font-size:clamp(48px,6vw,84px);max-width:9ch}
.contact-copy>p:not(.contact-location){margin-top:28px;color:var(--muted);max-width:32ch}
.contact-phone{display:inline-block;font:700 clamp(30px,3vw,40px)/1.2 Montserrat,sans-serif;margin-top:40px;letter-spacing:-.04em;font-variant-numeric:tabular-nums;border-bottom:3px solid var(--gold);padding-bottom:4px}
.contact-location{font-size:14px;color:var(--muted);margin-top:14px}
.contact form{background:var(--surface);padding:40px 44px}
.contact form h3{font-size:24px}
.form-intro{color:var(--muted);font-size:16px;margin:8px 0 28px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:25px}
label{font-size:14px;font-weight:600;display:block;margin-bottom:22px}
input,select,textarea{display:block;width:100%;margin-top:8px;border:0;border-bottom:1px solid var(--muted);padding:12px 0;min-height:48px;background:transparent;color:var(--ink);border-radius:0;font-size:17px;font-weight:400;transition:border-color .3s var(--ease)}
input:focus,select:focus,textarea:focus{border-bottom-color:var(--gold)}
select option{background:var(--paper)}
textarea{resize:vertical}
input::placeholder,textarea::placeholder{color:var(--muted);opacity:1}
.optional{font-weight:400;color:var(--muted)}
.form-note{font-size:13px;color:var(--muted);margin:0 0 24px;line-height:1.6}
.form-note a{text-decoration:underline}
.contact form .button{width:100%}
.form-result{margin-top:24px;border-top:1px solid var(--line);padding-top:20px}
.form-result p{font-size:16px;margin-bottom:12px}

/* Pie */
.footer{padding-bottom:30px;border-top:1px solid var(--line)}
.footer-statement{font:750 clamp(38px,6.7vw,96px)/1.08 Montserrat,sans-serif;letter-spacing:-.06em;padding:64px 0}
.footer-muted{display:block;color:var(--muted);font-weight:500}
.footer-top{display:grid;grid-template-columns:1fr 1fr 1fr;gap:35px;align-items:center;padding:20px 0 35px}
.footer-top p{font-size:16px;color:var(--muted)}
.footer-top>div{display:flex;gap:25px;justify-content:flex-end;font-size:15px}
.footer-bottom{display:flex;justify-content:space-between;border-top:4px double var(--line);padding-top:22px;color:var(--muted);font-size:13px}
.floating-contact{position:fixed;right:20px;bottom:20px;background:var(--ink);color:var(--paper);border:1px solid var(--paper);z-index:2;padding:12px 18px;font-size:14px;font-weight:600;display:flex;gap:20px}
.floating-contact[hidden]{display:none}

/* Aviso de privacidad */
.legal{max-width:800px;min-height:70vh}
.legal h1{font-size:40px;margin-bottom:30px}
.legal h2{font-size:24px;margin:30px 0 14px}
.legal p{color:var(--muted);margin-bottom:16px}
.legal a{text-decoration:underline}
.legal-notice{padding:20px;border:1px solid var(--gold)}

/* Movimiento: entrada de portada y aparición al desplazarse, nativo y sin JS */
@keyframes rise{from{opacity:0;transform:translateY(28px)}}
@keyframes settle{from{opacity:0;transform:translateY(24px) scale(.96)}}
@media(prefers-reduced-motion:no-preference){
  .hero-copy>*{animation:rise .9s var(--ease) both}
  .hero-copy>:nth-child(2){animation-delay:.08s}
  .hero-copy>:nth-child(3){animation-delay:.16s}
  .hero-copy>:nth-child(4){animation-delay:.24s}
  .hero-emblem{animation:settle 1.1s var(--ease) .1s backwards}
  .deadline{animation:slide-out .6s var(--ease) both}
  @supports(animation-timeline:view()){
    .service,.flow-steps li,.sheet article,.steps li,.benefits article{animation:rise linear both;animation-timeline:view();animation-range:entry 0% entry 55%}
  }
}

@media(max-width:1100px){
  .container{width:calc(100% - 72px)}
  .header nav{gap:17px;font-size:13px}
  .client-link{padding-left:17px}
  .brand>span{font-size:25px}
  .hero{grid-template-columns:1fr .75fr}
  .deadline{left:-24px}
  .service{grid-template-columns:1fr 1.2fr;gap:12px 32px}
  .service-action{grid-column:2}
  .flow-steps{grid-template-columns:repeat(3,1fr);row-gap:48px}
  .flow-steps li:nth-child(3):after{display:none}
  .financial,.about,.faq,.contact-grid{gap:56px}
}

@media(max-width:850px){
  .container{width:calc(100% - 40px)}
  .header{height:76px;position:relative;z-index:3}
  .menu-toggle{margin-left:auto}
  .theme-toggle{padding-left:14px;font-size:0;gap:0}
  .header nav{display:none;position:absolute;left:0;right:0;top:76px;background:var(--paper);padding:20px;border-bottom:1px solid var(--line);font-size:17px}
  .header nav.open{display:flex;flex-direction:column;align-items:stretch;gap:3px}
  .client-link{border-left:0;padding-left:0;border-top:1px solid var(--line);margin-top:10px}
  .menu-toggle{display:flex;gap:12px;align-items:center;background:transparent;color:var(--ink);border:1px solid var(--line);padding:8px 13px;min-height:44px;font-size:14px}
  .section,.flow{padding-block:80px 88px}
  .hero{grid-template-columns:1fr;gap:40px;padding-block:32px 72px}
  .hero-visual{justify-self:start;max-width:none}
  .emblem-button{display:flex;align-items:center;justify-items:start;gap:18px;width:auto}
  .hero-emblem{width:72px}
  .deadline{position:static;width:auto;max-width:400px;margin-top:20px}
  .service{grid-template-columns:1fr;gap:10px}
  .service-action{grid-column:1}
  .service:before{inset:0 -12px}
  .flow-steps{grid-template-columns:1fr;row-gap:0;margin-top:48px}
  .flow-steps li{padding:0 0 30px 30px;border-top:0;border-left:1px solid #f6f4ef40;margin-left:5px}
  .flow-steps li:last-child{border-left-color:transparent;padding-bottom:0}
  .flow-steps li:before{top:5px;left:-6px}
  .flow-steps li:after{display:none}
  .financial,.about,.faq,.contact-grid{grid-template-columns:1fr;gap:48px}
  .sheet{transform:none}
  .process{align-self:stretch}
  .footer-top{grid-template-columns:1fr 1fr}
  .footer-top>div{grid-column:1/-1;justify-content:flex-start}
  .footer-bottom{padding-bottom:60px}
}

@media(max-width:600px){
  .hero h1{font-size:clamp(40px,11vw,56px);line-height:1.02}
  .hero .eyebrow{font-size:11px;letter-spacing:.14em}
  .hero-description{font-size:18px}
  .actions{flex-direction:column;align-items:flex-start;gap:20px}
  h2{font-size:36px}
  .section-heading{margin-bottom:36px}
  .service h3{font-size:27px}
  .sheet{padding:26px 22px 28px 40px}
  .sheet:before{left:22px}
  .process{padding:32px 24px}
  .contact h2{font-size:48px}
  .contact form{padding:30px 22px}
  .form-row{grid-template-columns:1fr;gap:0}
  .footer-statement{font-size:11.3vw;padding:40px 0}
  .footer-top{grid-template-columns:1fr;gap:26px}
  .footer-top>div{grid-column:auto}
  .footer-bottom{flex-direction:column;gap:12px}
  .floating-contact{right:12px;bottom:12px}
  .legal h1{font-size:33px}
}

/* Tema oscuro (predeterminado, ver theme.js) */
:root[data-theme="dark"]{color-scheme:dark;--paper:#0b1b33;--surface:#132741;--ink:#f6f4ef;--muted:#b6c1d1;--line:#b6c1d140;--rule:#b6c1d112;--shadow:#00000066;--band:#071326}
[data-theme="dark"] :is(.brand img,.hero-emblem,.about-logo){filter:brightness(0) invert(1)}
[data-theme="dark"] .primary{background:var(--gold);border-color:var(--gold);color:var(--night)}
[data-theme="dark"] .primary:hover{background:#dbb966;color:var(--night)}

@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*:before,*:after{transition:none!important;animation:none!important}
  .button:hover{transform:none}
}