/* ============================================================
   Automotriz Aldunate — estilos
   Estética: boceto a lápiz grafito sobre papel.
   ============================================================ */

:root{
  --paper:#F6F5F3;      /* fondo papel (calzado al logo) */
  --paper-2:#EFEDE7;    /* secciones alternas */
  --paper-3:#E8E6DE;    /* footer */
  --ink:#1B1B1B;        /* grafito texto */
  --ink-2:#3F3E3B;
  --ink-3:#76746D;      /* apagado */
  --line:#D6D4CB;       /* hairlines */
  --red:#C32F2B;        /* acento (calzado al logo) */
  --red-deep:#9F241F;

  --maxw:1180px;
  --pad:clamp(20px,5vw,72px);
  --display:"Saira Condensed",sans-serif;
  --body:"DM Sans",system-ui,sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--body);font-size:17px;line-height:1.6;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
/* grano de papel sutil sobre todo */
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:url("../img/paper.svg");background-size:340px;
  opacity:.45;mix-blend-mode:multiply;
}
main,header,footer{position:relative;z-index:1}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}

.wrap{max-width:var(--maxw);margin:0 auto;padding-inline:var(--pad)}
section{padding-block:clamp(60px,9vw,120px)}
section[id]{scroll-margin-top:78px}
.alt{background:var(--paper-2)}

/* ---------- tipografía ---------- */
h1,h2,h3{font-family:var(--display);font-style:italic;font-weight:800;
  text-transform:uppercase;line-height:.92;letter-spacing:.01em;margin:0}
h2{font-size:clamp(34px,6vw,64px)}
h3{font-size:clamp(20px,2.4vw,25px);font-style:normal;font-weight:700;letter-spacing:.02em}
p{margin:0 0 1em}
.lead{font-size:clamp(18px,2.2vw,21px);color:var(--ink-2);max-width:42ch}

.eyebrow{display:inline-flex;align-items:center;gap:12px;
  font-family:var(--body);font-weight:600;font-size:13px;text-transform:uppercase;
  letter-spacing:.28em;color:var(--ink-3);margin:0 0 18px}
.eyebrow::before,.eyebrow::after{content:"";width:26px;height:2px;background:var(--red)}
.eyebrow.solo::after{display:none}

/* subrayado a mano bajo títulos */
.underline{display:block;width:108px;height:12px;margin-top:14px;color:var(--red)}
.underline path{fill:none;stroke:currentColor;stroke-width:3;stroke-linecap:round}

/* ---------- botones ---------- */
.btn{display:inline-flex;align-items:center;gap:9px;cursor:pointer;
  font-family:var(--display);font-style:italic;font-weight:700;text-transform:uppercase;
  letter-spacing:.04em;font-size:18px;padding:13px 26px;border:0;
  transition:transform .15s ease, background .15s ease, color .15s ease}
.btn svg{width:19px;height:19px}
.btn-primary{background:var(--red);color:#fff}
.btn-primary:hover{background:var(--red-deep);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 2px var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--paper);transform:translateY(-2px)}

/* ---------- header ---------- */
.nav{position:sticky;top:0;z-index:50;background:rgba(246,245,243,.86);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;
  gap:20px;padding-block:14px}
.brand{font-family:var(--display);font-style:italic;font-weight:800;
  text-transform:uppercase;letter-spacing:.02em;font-size:22px;line-height:1}
.brand b{color:var(--red);font-style:normal}
.nav-links{display:flex;gap:30px;align-items:center}
.nav-links a{font-size:15px;font-weight:500;color:var(--ink-2);position:relative}
.nav-links a:hover{color:var(--ink)}
.nav-links a::after{content:"";position:absolute;left:0;right:100%;bottom:-5px;
  height:2px;background:var(--red);transition:right .25s ease}
.nav-links a:hover::after{right:0}
.nav-cta{font-size:15px}
.burger{display:none;background:none;border:0;cursor:pointer;padding:6px}
.burger span{display:block;width:26px;height:2px;background:var(--ink);margin:5px 0;transition:.25s}

/* ---------- hero ---------- */
.hero{padding-top:clamp(30px,5vw,56px);text-align:center;position:relative}
.hero .logo{width:min(660px,90vw);margin:4px auto 6px;mix-blend-mode:multiply}
.hero h1{font-size:clamp(30px,5.4vw,58px);margin:0 auto 18px;max-width:18ch}
.hero .lead{margin-inline:auto;text-align:center;max-width:56ch}
.hero-cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:30px}
/* líneas de velocidad detrás del hero, como en el logo */
.speed{position:absolute;inset:0;z-index:-1;color:var(--line);opacity:.7}
.speed path{stroke:currentColor;stroke-width:2;fill:none;stroke-linecap:round}

/* ---------- marcas ---------- */
.marcas{border-block:1px solid var(--line);background:var(--paper)}
.marcas .wrap{padding-block:34px;display:flex;align-items:center;gap:28px;flex-wrap:wrap;justify-content:center}
.marcas .tag{font-family:var(--display);font-style:italic;font-weight:700;text-transform:uppercase;
  letter-spacing:.04em;color:var(--ink);font-size:18px;white-space:nowrap}
.marcas ul{display:flex;flex-wrap:wrap;gap:10px 22px;list-style:none;margin:0;padding:0;justify-content:center}
.marcas li{font-weight:500;letter-spacing:.06em;text-transform:uppercase;font-size:14px;color:var(--ink-3)}

/* ---------- grilla de servicios ---------- */
.head{margin-bottom:46px;max-width:54ch}
.grid{display:grid;gap:22px;grid-template-columns:repeat(3,1fr)}
.card{position:relative;background:var(--paper);padding:30px 28px 32px;
  transition:transform .2s ease}
.card .frame{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.card .frame rect{fill:none;stroke:var(--ink);stroke-width:1.4;
  vector-effect:non-scaling-stroke;
  stroke-dasharray:1300;stroke-dashoffset:0;transition:stroke .2s}
.card:hover{transform:translateY(-4px)}
.card:hover .frame rect{stroke:var(--red)}
.card .ico{width:46px;height:46px;color:var(--ink);margin-bottom:18px}
.card .ico svg{width:100%;height:100%;fill:none;stroke:currentColor;
  stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.card:hover .ico{color:var(--red)}
.card h3{margin-bottom:9px}
.card p{margin:0;color:var(--ink-3);font-size:15.5px;line-height:1.55}

/* ---------- confianza ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(36px,6vw,72px);align-items:center}
.checklist{list-style:none;margin:18px 0 0;padding:0;display:grid;gap:16px}
.checklist li{display:flex;gap:14px;align-items:flex-start;font-size:17px}
.checklist .mk{flex:0 0 auto;width:26px;height:26px;color:var(--red);margin-top:2px}
.checklist .mk svg{width:100%;height:100%;fill:none;stroke:currentColor;stroke-width:2.4;
  stroke-linecap:round;stroke-linejoin:round}
.note{position:relative;padding:30px;background:var(--paper)}
.note .frame{position:absolute;inset:0;width:100%;height:100%}
.note .frame rect{fill:none;stroke:var(--ink);stroke-width:1.4;vector-effect:non-scaling-stroke}
.note .big{font-family:var(--display);font-style:italic;font-weight:900;
  font-size:clamp(54px,9vw,86px);line-height:.85;color:var(--ink)}
.note .big span{color:var(--red)}
.note .cap{text-transform:uppercase;letter-spacing:.16em;font-size:13px;color:var(--ink-3);margin-top:8px}

/* ---------- proceso ---------- */
.steps{display:grid;gap:0;grid-template-columns:repeat(5,1fr);margin-top:14px}
.step{padding:26px 22px 26px 0;border-top:2px solid var(--ink)}
.step .num{font-family:var(--display);font-style:italic;font-weight:900;
  font-size:40px;color:var(--red);line-height:1;margin-bottom:10px}
.step h3{font-size:19px;margin-bottom:7px}
.step p{font-size:14.5px;color:var(--ink-3);margin:0}

/* ---------- contacto ---------- */
.contact{display:grid;grid-template-columns:1fr 1fr;gap:clamp(34px,6vw,64px)}
.field{margin-bottom:16px}
.field label{display:block;font-weight:600;font-size:13px;text-transform:uppercase;
  letter-spacing:.12em;color:var(--ink-3);margin-bottom:7px}
.field input,.field select,.field textarea{width:100%;font:inherit;font-size:16px;
  color:var(--ink);background:var(--paper);border:1.6px solid var(--ink);
  padding:12px 14px;border-radius:0}
.field textarea{resize:vertical;min-height:96px}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--red);box-shadow:inset 0 -3px 0 var(--red)}
.form-note{font-size:13.5px;color:var(--ink-3);margin-top:4px}
.info{display:grid;gap:22px;align-content:start}
.info .row{display:flex;gap:14px;align-items:flex-start}
.info .ico{flex:0 0 auto;width:24px;height:24px;color:var(--red)}
.info .ico svg{width:100%;height:100%;fill:none;stroke:currentColor;stroke-width:1.8;
  stroke-linecap:round;stroke-linejoin:round}
.info .k{font-weight:700;letter-spacing:.02em}
.info .v{color:var(--ink-3);font-size:15.5px}
.info .v a:hover{color:var(--red)}
.hours{display:grid;grid-template-columns:auto auto;gap:4px 18px;font-size:15px;color:var(--ink-3)}
.hours b{color:var(--ink);font-weight:600}

/* mapa embebido */
.map{position:relative;margin-top:36px;padding:8px;background:var(--paper)}
.map .frame{position:absolute;inset:0;width:100%;height:100%}
.map .frame rect{fill:none;stroke:var(--ink);stroke-width:1.4;vector-effect:non-scaling-stroke}
.map iframe{display:block;width:100%;height:360px;border:0;
  filter:grayscale(1) contrast(1.04);opacity:.94;transition:filter .35s ease,opacity .35s ease}
.map:hover iframe{filter:none;opacity:1}

/* ---------- footer ---------- */
footer{background:var(--paper-3);border-top:1px solid var(--line);padding-block:46px 30px}
.fgrid{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap;align-items:flex-start}
.fbrand{max-width:30ch}
.fbrand .brand{font-size:26px;margin-bottom:10px}
.fbrand p{color:var(--ink-3);font-size:14.5px;margin:0}
.fnav{display:flex;gap:50px;flex-wrap:wrap}
.fcol h4{font-family:var(--display);font-style:italic;text-transform:uppercase;
  font-size:16px;letter-spacing:.04em;margin:0 0 12px}
.fcol a,.fcol span{display:block;color:var(--ink-3);font-size:14.5px;margin-bottom:7px}
.fcol a:hover{color:var(--ink)}
.copy{margin-top:34px;padding-top:18px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-3)}

/* botón whatsapp flotante */
.wa{position:fixed;right:20px;bottom:20px;z-index:60;width:58px;height:58px;border-radius:50%;
  background:#25D366;display:grid;place-items:center;
  box-shadow:0 8px 22px rgba(0,0,0,.22);transition:transform .18s}
.wa:hover{transform:scale(1.08)}
.wa svg{width:30px;height:30px}
.wa-glyph{stroke:none;fill:#fff}
.btn .wa-glyph{fill:currentColor}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media(max-width:900px){
  .grid{grid-template-columns:repeat(2,1fr)}
  .split,.contact{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,1fr)}
  .step{border-top:2px solid var(--ink);padding-right:18px}
}
@media(max-width:680px){
  .nav-links{position:fixed;inset:64px 0 auto 0;flex-direction:column;gap:0;
    background:var(--paper);border-bottom:1px solid var(--line);
    transform:translateY(-130%);transition:transform .3s ease;padding:8px 0}
  .nav-links.open{transform:none}
  .nav-links a{padding:14px var(--pad);width:100%;border-top:1px solid var(--line)}
  .nav-links a::after{display:none}
  .burger{display:block}
  .grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}