/* =========================================================
   TORRES CASTAÑÓN — Asesoría Contable y Fiscal
   Hoja de estilos principal
   ========================================================= */

/* ---------- Tokens ---------- */
:root{
  --azul:        #2e75b6;   /* azul de marca, tomado del logo */
  --azul-oscuro: #0e3556;   /* azul profundo para textos y fondos oscuros */
  --tinta:       #10202f;   /* casi-negro azulado, texto principal */
  --piedra:      #56636f;   /* texto secundario */
  --niebla:      #eef2f6;   /* fondo gris muy claro */
  --hueso:       #f7f8fa;   /* fondo claro alterno */
  --blanco:      #ffffff;
  --oro:         #b3852e;   /* acento tipo "sello oficial" */
  --linea:       #dbe3ea;   /* bordes sutiles */

  --fuente-titulo: "Lora", Georgia, "Times New Roman", serif;
  --fuente-texto:  "Work Sans", "Segoe UI", Roboto, Arial, sans-serif;

  --radio: 14px;
  --radio-chico: 8px;
  --sombra: 0 12px 30px -14px rgba(14, 53, 86, .28);
  --franja: clamp(3rem, 7vw, 6.5rem);
}

*, *::before, *::after{ box-sizing: border-box; }
html{
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
}
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *, *::before, *::after{ animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}

body{
  margin: 0;
  font-family: var(--fuente-texto);
  color: var(--tinta);
  background: var(--blanco);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img{ max-width: 100%; display: block; }
a{ color: inherit; text-decoration: none; }
ul{ margin: 0; padding: 0; list-style: none; }
h1,h2,h3,h4{ font-family: var(--fuente-titulo); font-weight: 600; line-height: 1.15; margin: 0 0 .6em; color: var(--azul-oscuro); }
p{ margin: 0 0 1em; }
.container{ width: min(1180px, 92%); margin-inline: auto; }

:focus-visible{ outline: 3px solid var(--oro); outline-offset: 3px; }

.eyebrow{
  display: inline-flex; align-items: center; gap: .5em;
  font-family: var(--fuente-texto); font-weight: 600; letter-spacing: .08em;
  text-transform: uppercase; font-size: .78rem; color: var(--azul);
  margin-bottom: .9em;
}
.eyebrow::before{ content:""; width: 22px; height: 2px; background: var(--oro); display:inline-block; }

.section{ padding-block: var(--franja); }
.section--claro{ background: var(--hueso); }
.section--oscuro{ background: var(--azul-oscuro); color: #dce6ef; }
.section--oscuro h2, .section--oscuro h3{ color: var(--blanco); }
.section-head{ max-width: 680px; margin-bottom: clamp(2rem, 4vw, 3.2rem); }
.section-head p{ color: var(--piedra); font-size: 1.05rem; }
.section--oscuro .section-head p{ color: #b9cadb; }

h1{
  text-transform: uppercase;
  letter-spacing: .025em;
  line-height: 1.28;
  font-size: clamp(1.85rem, 3.6vw, 2.9rem);
  margin-bottom: .55em;
}
h2{
  font-size: clamp(1.35rem, 2.3vw, 1.85rem);
  text-transform: uppercase;
  letter-spacing: .02em;
  line-height: 1.35;
  margin-bottom: .6em;
  max-width: 42ch;
}
h3{ font-size: clamp(1.15rem, 1.6vw, 1.35rem); }

/* ---------- Divisor "equilibrio" (elemento distintivo) ---------- */
.equilibrio{
  --pos: 62%;
  height: 2px;
  background: var(--linea);
  position: relative;
  margin-block: var(--franja);
  width: min(1180px, 92%);
  margin-inline: auto;
}
.equilibrio::after{
  content:"";
  position: absolute; top:50%; left: var(--pos);
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--azul);
  transform: translate(-50%,-50%);
  box-shadow: 0 0 0 5px var(--blanco);
}
.section--oscuro .equilibrio, .section--claro + .section--claro .equilibrio{ background: rgba(255,255,255,.14); }
.section--oscuro .equilibrio::after{ box-shadow: 0 0 0 5px var(--azul-oscuro); background: var(--oro); }

/* ---------- Encabezado ---------- */
.encabezado{
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.92);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--linea);
}
.encabezado__barra{
  display: flex; align-items: center; justify-content: space-between;
  padding-block: .7rem;
}
.marca{ display: flex; align-items: center; gap: .7rem; font-family: var(--fuente-titulo); font-weight: 600; color: var(--azul-oscuro); font-size: 1.02rem; }
.marca img{ height: 68px; width: 68px; }
.marca small{ display:block; font-family: var(--fuente-texto); font-weight: 500; font-size: .68rem; letter-spacing: .06em; color: var(--piedra); text-transform: uppercase; }

.nav{ display: flex; align-items: center; gap: 2rem; }
.nav__enlaces{ display: flex; gap: 1.6rem; font-size: .92rem; font-weight: 500; }
.nav__enlaces a{ position: relative; padding-block: .3rem; }
.nav__enlaces a::after{
  content:""; position: absolute; left:0; right:0; bottom:-2px; height: 2px;
  background: var(--oro); transform: scaleX(0); transform-origin: left; transition: transform .25s ease;
}
.nav__enlaces a:hover::after, .nav__enlaces a:focus-visible::after{ transform: scaleX(1); }

.btn{
  display: inline-flex; align-items: center; justify-content: center; gap: .5em;
  font-family: var(--fuente-texto); font-weight: 600; font-size: .92rem;
  padding: .8em 1.5em; border-radius: 999px; border: 1px solid transparent;
  cursor: pointer; transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
  white-space: nowrap;
}
.btn:hover{ transform: translateY(-2px); }
.btn--primario{ background: var(--azul); color: var(--blanco); box-shadow: var(--sombra); }
.btn--primario:hover{ background: var(--azul-oscuro); }
.btn--fantasma{ border-color: var(--linea); color: var(--azul-oscuro); }
.btn--fantasma:hover{ border-color: var(--azul); }
.section--oscuro .btn--fantasma{ border-color: rgba(255,255,255,.35); color: var(--blanco); }

.menu-toggle{ display: none; }
.menu-toggle-lbl{ display:none; }

/* ---------- Hero ---------- */
.hero{
  position: relative; overflow: hidden;
  padding-block: clamp(3.2rem, 8vw, 6rem);
  background: radial-gradient(1100px 480px at 82% -10%, #e3edf7 0%, transparent 60%), var(--blanco);
}
.hero__grid{ display: grid; grid-template-columns: 1.15fr .85fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; }
.hero h1{ font-size: clamp(2.2rem, 4.6vw, 3.5rem); margin-bottom: .45em; }
.hero__lead{ font-size: 1.12rem; color: var(--piedra); max-width: 46ch; }
.hero__cta{ display: flex; flex-wrap: wrap; gap: .9rem; margin-top: 1.8rem; }

.hero__estadisticas{
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem;
  margin-top: clamp(2.4rem, 5vw, 3.6rem); padding-top: 1.8rem; border-top: 1px solid var(--linea);
  max-width: 560px;
}
.dato{ }
.dato strong{ display:block; font-family: var(--fuente-titulo); font-size: clamp(1.6rem, 3vw, 2.1rem); color: var(--azul-oscuro); font-variant-numeric: tabular-nums; }
.dato span{ font-size: .82rem; color: var(--piedra); }

.hero__foto{
  position: relative; max-width: 380px; margin-inline: auto;
}
.hero__foto-marco{
  position: absolute; inset: 18px -18px -18px 18px;
  background: var(--azul-oscuro); border-radius: var(--radio);
  z-index: 0;
}
.hero__foto > img:first-of-type{
  position: relative; z-index: 1; width: 100%; aspect-ratio: 5/6; object-fit: cover;
  border-radius: var(--radio); box-shadow: var(--sombra); will-change: transform;
}
.hero__foto-sello{
  position: absolute; z-index: 2; left: -22px; bottom: -22px;
  width: 60px; height: 60px; border-radius: 50%; background: var(--blanco);
  padding: 8px; box-shadow: var(--sombra);
}

/* ---------- Tarjetas de servicio ---------- */
.rejilla-servicios{ display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.4rem; }
.tarjeta{
  background: var(--blanco); border: 1px solid var(--linea); border-radius: var(--radio);
  padding: 1.9rem 1.7rem; transition: box-shadow .2s ease, transform .2s ease, border-color .2s ease;
}
.tarjeta:hover{ box-shadow: var(--sombra); transform: translateY(-4px); border-color: transparent; }
.tarjeta__icono{
  width: 46px; height: 46px; border-radius: 12px; background: var(--niebla);
  display: grid; place-items: center; margin-bottom: 1.1rem; color: var(--azul);
}
.tarjeta__icono svg{ width: 24px; height: 24px; }
.tarjeta p{ color: var(--piedra); font-size: .95rem; margin-bottom: 0; }

/* ---------- Trámites (details/summary, sin JS) ---------- */
.tramites{ display: grid; gap: 1rem; }
.tramite{
  background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--radio); overflow: hidden;
}
.tramite summary{
  cursor: pointer; list-style: none; padding: 1.2rem 1.5rem; font-family: var(--fuente-titulo);
  font-size: 1.05rem; color: var(--blanco); display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}
.tramite summary::-webkit-details-marker{ display:none; }
.tramite summary::after{
  content:"+"; font-family: var(--fuente-texto); font-size: 1.4rem; color: var(--oro); transition: transform .2s ease; flex: none;
}
.tramite[open] summary::after{ content:"–"; }
.tramite__cuerpo{ padding: 0 1.5rem 1.6rem; }
.lista-check{ display: grid; grid-template-columns: repeat(2, 1fr); gap: .55rem 1.6rem; }
.lista-check li{ padding-left: 1.4rem; position: relative; font-size: .95rem; color: #cddbe9; }
.lista-check li::before{
  content:""; position:absolute; left:0; top:.55em; width:7px; height:7px; border-radius:50%; background: var(--oro);
}

/* ---------- Historia (línea de tiempo) ---------- */
.historia{ display: grid; gap: 1.8rem; }
.hito{ display: grid; grid-template-columns: auto 1fr; gap: 1.2rem; }
.hito__marca{
  width: 46px; height: 46px; border-radius: 50%; background: var(--azul); color: var(--blanco);
  display: grid; place-items: center; font-family: var(--fuente-titulo); font-weight: 600; font-size: .95rem;
  box-shadow: var(--sombra);
}
.hito h3{ margin-bottom: .3em; }
.hito p{ color: var(--piedra); margin: 0; }

/* ---------- Equipo / valores ---------- */
.rejilla-2{ display: grid; grid-template-columns: 1fr 1fr; gap: clamp(1.4rem, 4vw, 3rem); align-items: start; }
.rejilla-valores{ display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.3rem; }
.valor{ text-align: left; }
.valor__icono{ width: 42px; height: 42px; margin-bottom: .9rem; color: var(--oro); }
.valor h3{ font-size: 1.05rem; margin-bottom: .35em; }
.valor p{ color: var(--piedra); font-size: .92rem; margin: 0; }

.mision-vision{ display: grid; grid-template-columns: 1fr 1fr; gap: 1.6rem; margin-top: 1rem; }
.mv-tarjeta{ background: var(--blanco); border-left: 3px solid var(--oro); border-radius: 0 var(--radio) var(--radio) 0; padding: 1.6rem 1.8rem; box-shadow: var(--sombra); }
.mv-tarjeta h3{ text-transform: uppercase; letter-spacing: .06em; font-size: .85rem; color: var(--azul); font-family: var(--fuente-texto); font-weight: 700; }
.mv-tarjeta p{ color: var(--piedra); margin: 0; }

/* ---------- Ubicaciones ---------- */
.rejilla-sedes{ display: grid; grid-template-columns: 1fr 1fr; gap: 1.6rem; }
.sede{ background: var(--blanco); border: 1px solid var(--linea); border-radius: var(--radio); overflow: hidden; }
.sede__mapa{ aspect-ratio: 16/9; background: var(--niebla); border: 0; width: 100%; }
.sede__info{ padding: 1.6rem 1.8rem; }
.sede__info h3{ display:flex; align-items:center; gap:.5rem; }
.sede__info address{ font-style: normal; color: var(--piedra); font-size: .95rem; margin-bottom: 1rem; }
.etiqueta{ display:inline-block; font-size: .72rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--oro); background: #fbf3e3; padding: .25em .7em; border-radius: 999px; margin-bottom: .6rem; }

/* ---------- FAQ ---------- */
.faq{ display: grid; gap: .9rem; max-width: 820px; }
.faq details{ background: var(--blanco); border: 1px solid var(--linea); border-radius: var(--radio-chico); padding: .2rem 0; }
.faq summary{ cursor: pointer; list-style: none; padding: 1.1rem 1.4rem; font-weight: 600; display:flex; justify-content: space-between; gap: 1rem; }
.faq summary::-webkit-details-marker{ display: none; }
.faq summary::after{ content:"+"; color: var(--azul); font-size: 1.3rem; flex: none; }
.faq details[open] summary::after{ content:"–"; }
.faq p{ padding: 0 1.4rem 1.2rem; color: var(--piedra); margin: 0; }

/* ---------- Contacto ---------- */
.contacto{ display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 4rem); }
.contacto__lista{ display: grid; gap: 1.1rem; margin-top: 1.6rem; }
.contacto__item{ display: flex; gap: .9rem; align-items: flex-start; }
.contacto__item svg{ width: 20px; height: 20px; color: var(--oro); flex: none; margin-top: .2rem; }
.contacto__item strong{ display:block; color: var(--blanco); font-size: .92rem; }
.contacto__item span, .contacto__item a{ color: #b9cadb; font-size: .92rem; }

.formulario{ background: var(--blanco); color: var(--tinta); border-radius: var(--radio); padding: clamp(1.6rem, 3vw, 2.4rem); box-shadow: var(--sombra); }
.campo{ margin-bottom: 1.1rem; }
.campo label{ display:block; font-size: .82rem; font-weight: 600; margin-bottom: .4rem; color: var(--azul-oscuro); }
.campo input, .campo textarea{
  width: 100%; padding: .8em .95em; border: 1px solid var(--linea); border-radius: var(--radio-chico);
  font-family: var(--fuente-texto); font-size: .95rem; background: var(--hueso); color: var(--tinta);
}
.campo input:focus, .campo textarea:focus{ outline: 2px solid var(--azul); background: var(--blanco); }
.formulario .btn{ width: 100%; margin-top: .4rem; }
.nota-legal{ font-size: .78rem; color: var(--piedra); margin-top: .9rem; }

/* ---------- Pie ---------- */
.pie{ background: var(--tinta); color: #9db1c4; padding-block: 3rem 1.6rem; }
.pie__grid{ display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 2rem; padding-bottom: 2rem; border-bottom: 1px solid rgba(255,255,255,.1); }
.pie__marca{ display:flex; align-items:center; gap:.7rem; color: var(--blanco); font-family: var(--fuente-titulo); font-size: 1.1rem; margin-bottom: .8rem; }
.pie__marca img{ height: 34px; width: 34px; }
.pie h4{ color: var(--blanco); font-family: var(--fuente-texto); font-size: .85rem; text-transform: uppercase; letter-spacing: .06em; margin-bottom: 1rem; }
.pie ul{ display: grid; gap: .6rem; font-size: .92rem; }
.pie ul a:hover{ color: var(--blanco); }
.pie__base{ display:flex; flex-wrap: wrap; justify-content: center; text-align: center; gap: .6rem; padding-top: 1.4rem; font-size: .82rem; }

/* ---------- Logo decorativo junto a preguntas frecuentes ---------- */
.faq-layout{
  display: grid; grid-template-columns: minmax(0, 1fr) auto;
  gap: clamp(2rem, 5vw, 4rem); align-items: center;
}
.faq__marca{
  width: clamp(150px, 16vw, 200px); height: clamp(150px, 16vw, 200px);
  border-radius: 50%; flex: none;
  background: radial-gradient(circle at 38% 32%, var(--blanco), var(--hueso) 75%);
  border: 1px solid var(--linea);
  box-shadow: var(--sombra);
  display: grid; place-items: center;
}
.faq__marca img{ width: 56%; height: auto; display: block; }

/* ---------- Animaciones de aparición al hacer scroll ---------- */
.reveal{
  opacity: 0; transform: translateY(26px);
  transition: opacity .7s cubic-bezier(.2,.7,.3,1), transform .7s cubic-bezier(.2,.7,.3,1);
}
.reveal.visible{ opacity: 1; transform: translateY(0); }
.reveal-grupo > .reveal:nth-child(1){ transition-delay: .02s; }
.reveal-grupo > .reveal:nth-child(2){ transition-delay: .09s; }
.reveal-grupo > .reveal:nth-child(3){ transition-delay: .16s; }
.reveal-grupo > .reveal:nth-child(4){ transition-delay: .23s; }
.reveal-grupo > .reveal:nth-child(5){ transition-delay: .30s; }
.reveal-grupo > .reveal:nth-child(6){ transition-delay: .37s; }
@media (prefers-reduced-motion: reduce){
  .reveal{ opacity: 1; transform: none; transition: none; }
}

.whatsapp-flotante{
  position: fixed; right: 1.2rem; bottom: 1.2rem; z-index: 60;
  width: 58px; height: 58px; border-radius: 50%; background: #25D366; color: #fff;
  display: grid; place-items: center; box-shadow: 0 10px 24px -8px rgba(0,0,0,.4);
  transition: transform .2s ease;
}
.whatsapp-flotante:hover{ transform: scale(1.07); }
.whatsapp-flotante svg{ width: 28px; height: 28px; }

/* ---------- Responsive ---------- */
@media (max-width: 980px){
  .hero__grid{ grid-template-columns: 1fr; }
  .hero__foto{ order: -1; max-width: 240px; }
  .rejilla-servicios{ grid-template-columns: repeat(2, 1fr); }
  .rejilla-valores{ grid-template-columns: repeat(2, 1fr); }
  .rejilla-2, .mision-vision, .contacto, .rejilla-sedes{ grid-template-columns: 1fr; }
  .faq-layout{ grid-template-columns: 1fr; }
  .faq__marca{ display: none; }
}

@media (max-width: 760px){
  :root{ --franja: 3rem; }
  .nav__enlaces{
    position: fixed; inset: 64px 0 0 0; background: var(--blanco);
    flex-direction: column; padding: 2rem 6%; gap: 1.4rem; font-size: 1.05rem;
    transform: translateX(100%); transition: transform .28s ease; overflow-y: auto;
  }
  .menu-toggle:checked ~ .encabezado__barra .nav__enlaces{ transform: translateX(0); }
  .menu-toggle-lbl{
    display: grid; place-items: center; width: 40px; height: 40px; cursor: pointer;
  }
  .menu-toggle-lbl span, .menu-toggle-lbl span::before, .menu-toggle-lbl span::after{
    content:""; display:block; width: 22px; height: 2px; background: var(--azul-oscuro); position: relative; transition: all .2s ease;
  }
  .menu-toggle-lbl span::before{ position:absolute; top:-7px; }
  .menu-toggle-lbl span::after{ position:absolute; top:7px; }
  .menu-toggle:checked ~ .encabezado__barra .menu-toggle-lbl span{ background: transparent; }
  .menu-toggle:checked ~ .encabezado__barra .menu-toggle-lbl span::before{ transform: rotate(45deg); top:0; }
  .menu-toggle:checked ~ .encabezado__barra .menu-toggle-lbl span::after{ transform: rotate(-45deg); top:0; }
  .nav > .btn{ display: none; }
  .rejilla-servicios{ grid-template-columns: 1fr; }
  .rejilla-valores{ grid-template-columns: 1fr 1fr; }
  .lista-check{ grid-template-columns: 1fr; }
  .hero__estadisticas{ grid-template-columns: 1fr 1fr; }
  .pie__grid{ grid-template-columns: 1fr; }
}