/* ============================================================
   GRUPO TECTA · Desarrollos Urbanos
   Paleta: azul profundo + blanco + gris hormigón. Minimalista,
   arquitectónico, líneas finas, mucho aire.
   ============================================================ */

:root{
  --navy-deep: #16242E;   /* fondo hero / secciones oscuras */
  --navy:      #21384A;   /* color de marca */
  --navy-soft: #2C4358;
  --ink:       #1B2A34;   /* texto sobre claro */
  --steel:     #4E7692;   /* acento acero (links / detalles) */
  --steel-lt:  #8AA6B8;
  --paper:     #F7F8F6;   /* blanco cálido-neutro */
  --paper-2:   #EEF0EC;   /* gris hormigón claro */
  --concrete:  #E2E5E0;
  --muted:     #5C6B74;   /* texto secundario sobre claro */
  --muted-lt:  rgba(247,248,246,.66); /* texto secundario sobre oscuro */

  --line:       rgba(27,42,52,.14);
  --line-strong:rgba(27,42,52,.28);
  --line-light: rgba(247,248,246,.14);

  --wrap: 1200px;
  --gutter: clamp(20px, 5vw, 64px);

  --f-display: "Sora", system-ui, sans-serif;
  --f-body: "Inter", system-ui, sans-serif;

  --ease: cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; -webkit-text-size-adjust:100%; }
body{
  margin:0;
  font-family:var(--f-body);
  color:var(--ink);
  background:var(--paper);
  font-size:17px;
  line-height:1.6;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{ display:block; max-width:100%; height:auto; }
a{ color:inherit; text-decoration:none; }
h1,h2,h3{ margin:0; font-family:var(--f-display); font-weight:600; letter-spacing:-.02em; }
p{ margin:0; }
::selection{ background:var(--navy); color:var(--paper); }

.wrap{ width:100%; max-width:var(--wrap); margin-inline:auto; padding-inline:var(--gutter); }

/* ---------- Typographic helpers ---------- */
.eyebrow{
  display:flex; align-items:center; gap:14px;
  font-family:var(--f-display); font-weight:500;
  font-size:.72rem; letter-spacing:.22em; text-transform:uppercase;
  color:var(--muted); margin:0;
}
.eyebrow--light{ color:var(--muted-lt); }
.eyebrow .idx{
  font-family:var(--f-display); font-weight:400; line-height:.85;
  font-size:clamp(2.1rem,3.6vw,3rem); letter-spacing:-.03em;
  color:rgba(78,118,146,.32); font-variant-numeric:tabular-nums;
}
.eyebrow--light .idx{ color:rgba(138,166,184,.4); }

.display{
  font-family:var(--f-display); font-weight:600;
  font-size:clamp(2rem, 4.6vw, 3.35rem);
  line-height:1.04; letter-spacing:-.03em; color:var(--ink);
}
.display--xl{ font-size:clamp(2.3rem, 6vw, 4.6rem); }
.display em{ font-style:normal; color:var(--steel-lt); }

/* ---------- Buttons ---------- */
.btn{
  --bg:var(--navy); --fg:var(--paper);
  display:inline-flex; align-items:center; justify-content:center; gap:10px;
  padding:15px 30px; border-radius:2px;
  font-family:var(--f-display); font-weight:500; font-size:.92rem; letter-spacing:.01em;
  background:var(--bg); color:var(--fg);
  border:1px solid var(--bg); cursor:pointer;
  transition:transform .35s var(--ease), background .3s var(--ease), color .3s var(--ease), border-color .3s var(--ease);
}
.btn:hover{ transform:translateY(-2px); }
.btn--primary{ --bg:var(--navy); --fg:var(--paper); }
.btn--primary:hover{ background:var(--navy-deep); border-color:var(--navy-deep); }
.btn--light{ --bg:var(--paper); --fg:var(--navy); }
.btn--light:hover{ background:#fff; }
.btn--ghost{
  background:transparent; color:var(--paper); border-color:var(--line-light);
}
.btn--ghost:hover{ border-color:var(--paper); background:rgba(247,248,246,.06); }
.btn--full{ width:100%; }

/* ============================================================
   NAV
   ============================================================ */
.nav{
  position:fixed; inset:0 0 auto 0; z-index:50;
  transition:background .4s var(--ease), border-color .4s var(--ease), backdrop-filter .4s;
  border-bottom:1px solid transparent;
}
.nav__inner{ display:flex; align-items:center; justify-content:space-between; height:76px; }
.brand{ display:flex; align-items:center; gap:12px; }
.brand__mark{ height:30px; width:auto; transition:opacity .4s; }
.brand__name{
  font-family:var(--f-display); font-weight:600; font-size:1.06rem;
  letter-spacing:-.01em; color:var(--paper); transition:color .4s var(--ease);
}
.nav__links{ display:flex; align-items:center; gap:34px; }
.nav__links a{
  font-family:var(--f-display); font-size:.9rem; font-weight:450;
  color:var(--muted-lt); transition:color .3s;
}
.nav__links a:hover{ color:var(--paper); }
.nav__cta{
  padding:9px 20px; border:1px solid var(--line-light); border-radius:2px;
  color:var(--paper) !important;
}
.nav__cta:hover{ background:rgba(247,248,246,.08); }

/* scrolled state → light bar */
.nav.is-scrolled{
  background:rgba(247,248,246,.92);
  backdrop-filter:saturate(140%) blur(12px);
  border-bottom-color:var(--line);
}
.nav.is-scrolled .brand__name{ color:var(--ink); }
.nav.is-scrolled .brand__mark{ content:url("assets/img/iso-navy.png"); }
.nav.is-scrolled .nav__links a{ color:var(--muted); }
.nav.is-scrolled .nav__links a:hover{ color:var(--ink); }
.nav.is-scrolled .nav__cta{ color:var(--navy) !important; border-color:var(--line-strong); }
.nav.is-scrolled .nav__cta:hover{ background:var(--navy); color:var(--paper) !important; }

.nav__burger{
  display:none; flex-direction:column; gap:6px; width:40px; height:40px;
  align-items:center; justify-content:center; background:none; border:none; cursor:pointer;
}
.nav__burger span{ width:24px; height:1.5px; background:var(--paper); transition:.3s var(--ease); }
.nav.is-scrolled .nav__burger span{ background:var(--ink); }

/* ============================================================
   HERO
   ============================================================ */
.hero{
  position:relative; overflow:hidden;
  background:var(--navy-deep); color:var(--paper);
  padding:172px 0 0; min-height:100svh;
  display:flex; flex-direction:column; justify-content:center;
}
.hero__grid{
  position:absolute; inset:0; pointer-events:none; opacity:.5;
  background-image:
    linear-gradient(var(--line-light) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-light) 1px, transparent 1px);
  background-size:100% 100%, calc(100%/6) 100%;
  -webkit-mask-image:linear-gradient(90deg, transparent, #000 20%, #000 80%, transparent);
          mask-image:linear-gradient(90deg, transparent, #000 20%, #000 80%, transparent);
}
.hero__blueprint{
  position:absolute; right:-6%; bottom:-4%; width:min(60%, 820px);
  opacity:.16; pointer-events:none;
  -webkit-mask-image:radial-gradient(120% 120% at 80% 90%, #000 40%, transparent 78%);
          mask-image:radial-gradient(120% 120% at 80% 90%, #000 40%, transparent 78%);
}
.hero__inner{ position:relative; z-index:2; padding-block:40px; }
.hero__title{
  font-size:clamp(2.5rem, 6.6vw, 5.1rem); line-height:1.02; letter-spacing:-.035em;
  font-weight:600; margin:26px 0 0; max-width:16ch;
}
.hero__lead{
  margin:28px 0 0; max-width:52ch; font-size:clamp(1.05rem,1.6vw,1.24rem);
  color:var(--muted-lt); line-height:1.62;
}
.hero__actions{ display:flex; flex-wrap:wrap; gap:14px; margin-top:40px; }
.hero__foot{
  position:relative; z-index:2; display:flex; flex-wrap:wrap; gap:12px 34px;
  padding-block:26px; margin-top:auto;
  border-top:1px solid var(--line-light);
  font-family:var(--f-display); font-size:.74rem; letter-spacing:.18em; text-transform:uppercase;
  color:var(--muted-lt);
}
.hero__foot span{ position:relative; }

/* ============================================================
   SECTIONS (generic)
   ============================================================ */
.section{ position:relative; padding:clamp(72px,10vw,140px) 0; }
.section--alt{ background:var(--paper-2); }
.section--dark{ background:var(--navy-deep); color:var(--paper); overflow:hidden; }
.section--dark .display{ color:var(--paper); }
.section--dark .hero__grid{ opacity:.4; }
.section__head{ margin-bottom:clamp(34px,5vw,56px); }
.section__head--split{
  display:grid; grid-template-columns:1fr; gap:22px;
  align-items:end; margin-bottom:clamp(44px,6vw,72px);
}
@media(min-width:820px){
  .section__head--split{ grid-template-columns:.9fr 1.4fr; gap:40px; }
  /* Socios: título más largo → columna más ancha para mantenerlo en dos líneas */
  #socios .section__head--split{ grid-template-columns:.7fr 1.6fr; }
  #socios .section__head--split .display{ text-wrap:balance; }
}

/* ---------- Quiénes somos ---------- */
.quienes__grid{ display:grid; grid-template-columns:1fr; gap:36px; }
@media(min-width:900px){ .quienes__grid{ grid-template-columns:1.1fr 1fr; gap:64px; align-items:start; } }
.quienes__body p{ color:var(--muted); margin-bottom:18px; font-size:1.06rem; }
.quienes__body strong{ color:var(--ink); font-weight:600; }
/* ---------- Socios ---------- */
.socios__lead{
  max-width:60ch; color:var(--muted); font-size:1.1rem;
  margin-bottom:clamp(40px,5vw,64px);
}
.socios{ display:grid; grid-template-columns:1fr; gap:clamp(34px,4vw,56px); }
@media(min-width:720px){ .socios{ grid-template-columns:1fr 1fr; } }
.socio__photo{
  position:relative; aspect-ratio:4/5; border-radius:3px; overflow:hidden;
  border:1px solid var(--line);
  background:linear-gradient(158deg,#24405480,#16242e), var(--navy-deep);
  display:flex; align-items:center; justify-content:center;
}
.socio__photo img.portrait{
  position:absolute; inset:0; width:100%; height:100%; object-fit:cover;
  object-position:center 22%;
  filter:grayscale(1) contrast(1.03) brightness(1.02);
  transition:transform .6s var(--ease), filter .6s var(--ease);
}
.socio__photo::after{
  content:""; position:absolute; inset:0; pointer-events:none;
  background:linear-gradient(180deg, rgba(22,36,46,0) 52%, rgba(22,36,46,.5));
}
.socio:hover .socio__photo img.portrait{ transform:scale(1.02); filter:grayscale(.4) contrast(1.04) brightness(1.02); }
.socio__photo .ph{ display:flex; flex-direction:column; align-items:center; gap:14px; }
.socio__photo .ph img{ width:46px; height:auto; opacity:.42; }
.socio__photo .ph span{
  font-family:var(--f-display); font-size:.7rem; letter-spacing:.2em;
  text-transform:uppercase; color:var(--muted-lt);
}
.socio__info{ padding-top:26px; }
.socio__role{
  font-family:var(--f-display); font-size:.74rem; letter-spacing:.16em;
  text-transform:uppercase; color:var(--steel); margin-bottom:10px;
}
.socio__name{ font-family:var(--f-display); font-size:clamp(1.5rem,2.4vw,1.85rem); font-weight:600; letter-spacing:-.02em; color:var(--ink); }
.socio__title{
  margin-top:8px; font-family:var(--f-display); font-weight:500;
  font-size:.98rem; letter-spacing:.005em; color:var(--steel);
}
.socio__bio{ margin-top:16px; color:var(--muted); font-size:1rem; max-width:46ch; }

.pillars{
  display:grid; grid-template-columns:1fr; gap:0;
  margin-top:clamp(48px,6vw,80px); border-top:1px solid var(--line);
}
@media(min-width:640px){ .pillars{ grid-template-columns:1fr 1fr; } }
@media(min-width:1000px){ .pillars{ grid-template-columns:repeat(4,1fr); } }
.pillar{ padding:30px 26px 30px 0; border-bottom:1px solid var(--line); }
@media(min-width:1000px){
  .pillar{ border-bottom:none; border-right:1px solid var(--line); padding:34px 40px; }
  .pillar:first-child{ padding-left:0; }
  .pillar:last-child{ border-right:none; padding-right:0; }
}
.pillar__n{
  display:block; font-family:var(--f-display); font-weight:600; font-size:1.12rem;
  color:var(--ink); margin-bottom:10px; letter-spacing:-.01em;
}
.pillar p{ color:var(--muted); font-size:.96rem; }

/* ---------- Servicios ---------- */
.services{
  display:grid; grid-template-columns:1fr; gap:1px;
  background:var(--line); border:1px solid var(--line);
}
@media(min-width:640px){ .services{ grid-template-columns:1fr 1fr; } }
@media(min-width:980px){ .services{ grid-template-columns:repeat(3,1fr); } }
.service{
  background:var(--paper-2); padding:40px 34px 46px;
  transition:background .35s var(--ease), transform .35s var(--ease);
}
.section--alt .service{ background:var(--paper); }
.service:hover{ background:#fff; }
.service__idx{
  font-family:var(--f-display); font-size:.78rem; letter-spacing:.14em;
  color:var(--steel); font-variant-numeric:tabular-nums;
}
.service h3{ font-size:1.28rem; margin:20px 0 12px; letter-spacing:-.02em; }
.service p{ color:var(--muted); font-size:.98rem; }

/* ---------- Proceso ---------- */
.process{
  list-style:none; margin:0; padding:0;
  display:grid; grid-template-columns:1fr; gap:0;
  border-top:1px solid var(--line);
}
@media(min-width:720px){ .process{ grid-template-columns:repeat(5,1fr); border-top:none; } }
.step{ padding:28px 24px 30px 0; border-bottom:1px solid var(--line); position:relative; }
@media(min-width:720px){
  .step{ padding:0 26px; border-bottom:none; border-top:2px solid var(--ink); padding-top:26px; }
  .step:first-child{ padding-left:0; }
}
.step__n{
  font-family:var(--f-display); font-weight:600; font-size:1rem;
  color:var(--steel); font-variant-numeric:tabular-nums;
}
.step h3{ font-size:1.34rem; margin:12px 0 12px; }
.step p{ color:var(--muted); font-size:.95rem; }

/* ---------- Valores (dark) ---------- */
.section--dark .display--xl{ margin-bottom:clamp(48px,6vw,80px); }
.values{
  display:grid; grid-template-columns:1fr; gap:1px;
  background:var(--line-light); border:1px solid var(--line-light);
}
@media(min-width:600px){ .values{ grid-template-columns:1fr 1fr; } }
@media(min-width:1040px){ .values{ grid-template-columns:repeat(5,1fr); } }
.value{ background:var(--navy-deep); padding:34px 28px 40px; }
.value h3{ font-size:1.16rem; color:var(--paper); margin-bottom:14px; letter-spacing:-.01em; }
.value p{ color:var(--muted-lt); font-size:.94rem; }

/* ---------- Contacto ---------- */
.section--contact{ background:var(--paper); padding-bottom:clamp(80px,10vw,140px); }
.contact__grid{ display:grid; grid-template-columns:1fr; gap:clamp(44px,6vw,80px); }
@media(min-width:900px){ .contact__grid{ grid-template-columns:1fr 1fr; align-items:start; } }
.contact__intro .display{ margin:22px 0 22px; }
.contact__lead{ color:var(--muted); font-size:1.12rem; max-width:38ch; }
.contact__list{ list-style:none; margin:40px 0 0; padding:32px 0 0; border-top:1px solid var(--line); }
.contact__list li{
  display:flex; align-items:baseline; gap:20px; padding:14px 0; border-bottom:1px solid var(--line);
}
.contact__label{
  font-family:var(--f-display); font-size:.72rem; letter-spacing:.16em; text-transform:uppercase;
  color:var(--muted); min-width:104px;
}
.contact__list a{ color:var(--ink); font-weight:500; transition:color .25s; }
.contact__list a:hover{ color:var(--steel); }

.contact__form{
  background:var(--paper-2); border:1px solid var(--line);
  padding:clamp(28px,4vw,44px); border-radius:3px;
}
.field{ margin-bottom:22px; }
.field label{
  display:block; font-family:var(--f-display); font-size:.76rem; letter-spacing:.12em;
  text-transform:uppercase; color:var(--muted); margin-bottom:10px;
}
.field input,.field textarea{
  width:100%; font-family:var(--f-body); font-size:1rem; color:var(--ink);
  background:#fff; border:1px solid var(--line-strong); border-radius:2px;
  padding:14px 16px; transition:border-color .25s, box-shadow .25s; resize:vertical;
}
.field input::placeholder,.field textarea::placeholder{ color:#9aa6ad; }
.field input:focus,.field textarea:focus{
  outline:none; border-color:var(--navy); box-shadow:0 0 0 3px rgba(33,56,74,.1);
}
.form__note{
  margin-top:16px; padding:14px 16px; border-radius:2px;
  background:rgba(78,118,146,.12); color:var(--navy); font-size:.92rem;
  border:1px solid rgba(78,118,146,.28);
}
.form__note.is-error{
  background:rgba(178,58,58,.10); color:#8f2f2f;
  border-color:rgba(178,58,58,.30);
}
.contact__form button[disabled]{ opacity:.6; cursor:progress; }

/* ============================================================
   FOOTER
   ============================================================ */
.footer{ background:var(--navy-deep); color:var(--paper); padding:clamp(56px,7vw,84px) 0 34px; }
.footer__inner{
  display:grid; grid-template-columns:1fr; gap:36px;
  padding-bottom:44px; border-bottom:1px solid var(--line-light);
}
@media(min-width:760px){ .footer__inner{ grid-template-columns:1.4fr 1fr; align-items:start; } }
.footer__logo{ height:58px; width:auto; margin-bottom:20px; }
.footer__brand p{ color:var(--muted-lt); max-width:34ch; }
.footer__meta{ display:flex; flex-direction:column; gap:12px; }
@media(min-width:760px){ .footer__meta{ align-items:flex-end; text-align:right; } }
.footer__meta a,.footer__meta span{ color:var(--muted-lt); transition:color .25s; }
.footer__meta a:hover{ color:var(--paper); }
.footer__bottom{
  display:flex; flex-wrap:wrap; gap:10px 24px; justify-content:space-between;
  padding-top:26px;
  font-family:var(--f-display); font-size:.76rem; letter-spacing:.06em; color:var(--muted-lt);
}

/* ============================================================
   REVEAL ON SCROLL
   ============================================================ */
[data-reveal]{ opacity:0; transform:translateY(22px); transition:opacity .8s var(--ease), transform .8s var(--ease); }
[data-reveal].is-in{ opacity:1; transform:none; }

@media(prefers-reduced-motion:reduce){
  html{ scroll-behavior:auto; }
  [data-reveal]{ opacity:1; transform:none; transition:none; }
  .btn:hover{ transform:none; }
}

/* ============================================================
   MOBILE NAV
   ============================================================ */
@media(max-width:860px){
  .nav__burger{ display:flex; }
  .nav__links{
    position:fixed; inset:76px 0 auto 0; flex-direction:column; align-items:flex-start; gap:0;
    background:var(--navy-deep); border-bottom:1px solid var(--line-light);
    padding:8px var(--gutter) 26px;
    clip-path:inset(0 0 100% 0); visibility:hidden;
    transition:clip-path .45s var(--ease), visibility .45s var(--ease);
  }
  .nav.is-open .nav__links{ clip-path:inset(0 0 0 0); visibility:visible; }
  .nav__links a{ width:100%; padding:16px 0; border-bottom:1px solid var(--line-light); color:var(--paper); font-size:1.05rem; }
  .nav__cta{ border:none !important; padding:16px 0 !important; }
  .nav.is-scrolled .nav__links{ background:var(--navy-deep); }
  .nav.is-scrolled .nav__links a{ color:var(--paper); }
  .nav.is-open.is-scrolled .nav__burger span{ background:var(--paper); }
  .nav.is-open .nav__burger span:first-child{ transform:translateY(3.75px) rotate(45deg); }
  .nav.is-open .nav__burger span:last-child{ transform:translateY(-3.75px) rotate(-45deg); }
}