/* ===========================================================
   ARQUITECTA EMOCIONAL · Belén Escribano
   Sistema visual — basado en el Plan de Marca v1.0
   =========================================================== */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,400;0,500;0,600;1,400;1,500&family=Inter:wght@300;400;500&display=swap');

:root{
  /* Paleta oficial */
  --marfil:   #F5F0E8;   /* fondo principal */
  --beige:    #E8DFD0;   /* superficies */
  --taupe:    #BFB5A8;   /* separadores, secundario */
  --dorado:   #C9AA7C;   /* acentos premium, CTA */
  --carbon:   #3D3830;   /* fondo oscuro, texto principal */

  /* Derivados */
  --carbon-deep: #322E27;
  --dorado-deep: #B5905F;
  --taupe-soft:  #D6CCBE;
  --marfil-soft: #FAF7F1;
  --line: rgba(61,56,48,.12);
  --line-light: rgba(245,240,232,.16);

  --ink: var(--carbon);
  --ink-soft: #6B6357;
  --on-dark: #EDE6DA;
  --on-dark-soft: #B3A998;

  /* Tipografía */
  --serif: 'Cormorant Garamond', Georgia, 'Times New Roman', serif;
  --sans: 'Inter', system-ui, -apple-system, sans-serif;

  /* Ritmo */
  --maxw: 1240px;
  --gutter: clamp(22px, 5vw, 64px);
  --section-y: clamp(80px, 11vw, 168px);
  --ease: cubic-bezier(.22,.61,.36,1);
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; -webkit-text-size-adjust:100%; }
body{
  margin:0;
  background:var(--marfil);
  color:var(--ink);
  font-family:var(--sans);
  font-weight:400;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
::selection{ background:var(--dorado); color:var(--carbon); }

/* ----------------------------------------------------------- Type */
h1,h2,h3,h4{ font-family:var(--serif); font-weight:500; margin:0; letter-spacing:.01em; line-height:1.08; }
.display{
  font-size:clamp(2.7rem, 7vw, 5.7rem);
  font-weight:500;
  line-height:1.02;
  letter-spacing:.005em;
}
.h-xl{ font-size:clamp(2.1rem, 4.6vw, 3.5rem); line-height:1.06; }
.h-lg{ font-size:clamp(1.7rem, 3.2vw, 2.6rem); }
.h-md{ font-size:clamp(1.35rem, 2.2vw, 1.85rem); }
.serif-it{ font-family:var(--serif); font-style:italic; font-weight:400; }

.lead{
  font-family:var(--sans);
  font-weight:300;
  font-size:clamp(1.05rem, 1.5vw, 1.28rem);
  line-height:1.75;
  color:var(--ink-soft);
}
p{ margin:0 0 1.1em; }
.body p:last-child{ margin-bottom:0; }

.eyebrow{
  font-family:var(--sans);
  font-weight:500;
  text-transform:uppercase;
  font-size:.69rem;
  letter-spacing:.26em;
  color:var(--dorado-deep);
  display:inline-flex;
  align-items:center;
  gap:.85em;
}
.eyebrow::before{
  content:"";
  width:30px; height:1px; background:var(--dorado);
  display:inline-block;
}
.eyebrow.center::after{
  content:""; width:30px; height:1px; background:var(--dorado); display:inline-block;
}
.eyebrow.plain::before{ display:none; }

.gold{ color:var(--dorado-deep); }
.muted{ color:var(--ink-soft); }

/* ----------------------------------------------------------- Layout */
.wrap{ max-width:var(--maxw); margin:0 auto; padding-inline:var(--gutter); }
.narrow{ max-width:760px; }
.section{ padding-block:var(--section-y); position:relative; }
.bg-marfil{ background:var(--marfil); }
.bg-beige{ background:var(--beige); }
.bg-soft{ background:var(--marfil-soft); }
.bg-carbon{ background:var(--carbon); color:var(--on-dark); }
.bg-carbon h1,.bg-carbon h2,.bg-carbon h3{ color:var(--marfil); }
.bg-carbon .lead{ color:var(--on-dark-soft); }
.bg-carbon .muted{ color:var(--on-dark-soft); }

.rule{ height:1px; background:var(--line); border:0; margin:0; }

/* ----------------------------------------------------------- Buttons */
.btn{
  --c: var(--carbon);
  display:inline-flex; align-items:center; gap:.7em;
  font-family:var(--sans); font-weight:500;
  font-size:.78rem; letter-spacing:.16em; text-transform:uppercase;
  padding:1.05em 2.1em;
  border:1px solid var(--c);
  color:var(--c);
  background:transparent;
  border-radius:0;
  cursor:pointer;
  transition:background .5s var(--ease), color .5s var(--ease), border-color .5s var(--ease), transform .5s var(--ease);
  position:relative;
}
.btn:hover{ background:var(--c); color:var(--marfil); }
.btn-gold{ --c:var(--dorado-deep); background:var(--dorado-deep); color:#fff; border-color:var(--dorado-deep); }
.btn-gold:hover{ background:transparent; color:var(--dorado-deep); }
.btn-solid{ background:var(--carbon); color:var(--marfil); }
.btn-solid:hover{ background:transparent; color:var(--carbon); }
.btn-light{ --c:var(--marfil); color:var(--marfil); border-color:rgba(245,240,232,.4); }
.btn-light:hover{ background:var(--marfil); color:var(--carbon); }
.btn .arr{ transition:transform .5s var(--ease); }
.btn:hover .arr{ transform:translateX(4px); }

.txtlink{
  font-family:var(--sans); font-weight:500; font-size:.78rem;
  letter-spacing:.16em; text-transform:uppercase; color:var(--dorado-deep);
  display:inline-flex; align-items:center; gap:.6em;
  border-bottom:1px solid transparent; padding-bottom:3px;
  transition:border-color .4s var(--ease), gap .4s var(--ease);
}
.txtlink:hover{ border-color:var(--dorado); gap:.95em; }

/* ----------------------------------------------------------- Nav */
.nav{
  position:fixed; top:0; left:0; right:0; z-index:100;
  display:flex; align-items:center; justify-content:space-between;
  padding:clamp(16px,2vw,26px) var(--gutter);
  transition:background .5s var(--ease), padding .5s var(--ease), box-shadow .5s var(--ease);
}
.nav.scrolled{
  background:rgba(245,240,232,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  padding-block:16px;
  box-shadow:0 1px 0 var(--line);
}
.nav-logo{ display:flex; align-items:center; gap:0; }
.nav-logo img{ height:clamp(46px,4.6vw,64px); width:auto; transition:opacity .4s, height .5s var(--ease); }
.nav-links{ display:flex; align-items:center; gap:clamp(20px,2.6vw,40px); }
.nav-links a{
  font-family:var(--sans); font-weight:400; font-size:.74rem;
  letter-spacing:.16em; text-transform:uppercase; color:var(--carbon);
  position:relative; padding:4px 0;
  transition:color .4s;
}
.nav-links a::after{
  content:""; position:absolute; left:0; bottom:-2px; height:1px; width:0;
  background:var(--dorado); transition:width .45s var(--ease);
}
.nav-links a:hover::after,.nav-links a.active::after{ width:100%; }
.nav-links a.active{ color:var(--dorado-deep); }
.nav-cta{ border:1px solid var(--carbon); padding:.72em 1.4em !important; }
.nav-cta::after{ display:none !important; }
.nav-cta:hover{ background:var(--carbon); color:var(--marfil) !important; }

.nav-toggle{ display:none; background:none; border:0; cursor:pointer; padding:8px; }
.nav-toggle span{ display:block; width:24px; height:1.5px; background:var(--carbon); margin:5px 0; transition:.4s var(--ease); }

/* mobile menu */
.mobile-menu{
  position:fixed; inset:0; z-index:99; background:var(--marfil);
  display:flex; flex-direction:column; justify-content:center; align-items:center;
  gap:8px; opacity:0; pointer-events:none; transition:opacity .5s var(--ease);
}
.mobile-menu.open{ opacity:1; pointer-events:auto; }
.mobile-menu a{
  font-family:var(--serif); font-size:2rem; color:var(--carbon); padding:.25em;
  letter-spacing:.01em;
}
.mobile-menu a.active{ color:var(--dorado-deep); font-style:italic; }

/* ----------------------------------------------------------- Footer */
.footer{ background:var(--carbon); color:var(--on-dark); padding-block:clamp(56px,7vw,88px); }
.footer .wrap{ display:grid; grid-template-columns:1.4fr 1fr 1fr; gap:48px; }
.footer-brand img{ height:72px; width:auto; margin-bottom:26px; }
.footer h4{ font-family:var(--sans); font-weight:500; text-transform:uppercase; font-size:.7rem; letter-spacing:.2em; color:var(--on-dark-soft); margin-bottom:18px; }
.footer a{ color:var(--on-dark); display:block; padding:5px 0; font-size:.92rem; transition:color .35s; }
.footer a:hover{ color:var(--dorado); }
.footer-bottom{ border-top:1px solid var(--line-light); margin-top:clamp(40px,5vw,64px); padding-top:26px; display:flex; justify-content:space-between; gap:18px; flex-wrap:wrap; }
.footer-bottom span{ font-size:.78rem; color:var(--on-dark-soft); letter-spacing:.04em; }
.footer-quote{ font-family:var(--serif); font-style:italic; font-size:clamp(1.3rem,2.2vw,1.7rem); color:var(--marfil); line-height:1.3; max-width:420px; }

/* ----------------------------------------------------------- Decorative mark */
.mark-deco{ position:absolute; pointer-events:none; opacity:.05; z-index:0; }
.section > .wrap{ position:relative; z-index:1; }

/* ----------------------------------------------------------- Reveal */
[data-reveal]{ opacity:0; transform:translateY(26px); transition:opacity 1.05s var(--ease), transform 1.05s var(--ease); will-change:opacity,transform; }
[data-reveal].in{ opacity:1; transform:none; }
[data-reveal-delay="1"]{ transition-delay:.12s; }
[data-reveal-delay="2"]{ transition-delay:.24s; }
[data-reveal-delay="3"]{ transition-delay:.36s; }
[data-reveal-delay="4"]{ transition-delay:.48s; }
[data-reveal-delay="5"]{ transition-delay:.6s; }
@media (prefers-reduced-motion: reduce){
  [data-reveal]{ opacity:1; transform:none; transition:none; }
  html{ scroll-behavior:auto; }
}

/* ----------------------------------------------------------- Image placeholder */
.ph{
  position:relative; overflow:hidden; background:var(--beige);
  background-image:repeating-linear-gradient(135deg, rgba(191,181,168,.16) 0 2px, transparent 2px 11px);
}
.ph::after{
  content:attr(data-ph);
  position:absolute; inset:0; display:flex; align-items:center; justify-content:center;
  text-align:center; padding:24px;
  font-family:var(--sans); font-size:.68rem; letter-spacing:.16em; text-transform:uppercase;
  color:var(--ink-soft); line-height:1.7;
}
.ph.dark{ background:var(--carbon-deep); background-image:repeating-linear-gradient(135deg, rgba(201,170,124,.14) 0 2px, transparent 2px 11px); }
.ph.dark::after{ color:var(--on-dark-soft); }

/* ----------------------------------------------------------- Utilities */
.center{ text-align:center; }
.mx-auto{ margin-inline:auto; }
.stack-sm > * + *{ margin-top:14px; }
.stack > * + *{ margin-top:24px; }
.stack-lg > * + *{ margin-top:40px; }
.grid{ display:grid; gap:clamp(28px,3.4vw,56px); }
.g-2{ grid-template-columns:repeat(2,1fr); }
.g-3{ grid-template-columns:repeat(3,1fr); }
.items-center{ align-items:center; }
.maxw-sm{ max-width:560px; }
.maxw-md{ max-width:680px; }

/* ----------------------------------------------------------- Responsive */
@media (max-width:900px){
  .footer .wrap{ grid-template-columns:1fr 1fr; }
  .footer-brand{ grid-column:1 / -1; }
}
@media (max-width:860px){
  .nav-links{ display:none; }
  .nav-toggle{ display:block; }
  .g-2,.g-3{ grid-template-columns:1fr; }
}
@media (max-width:560px){
  .footer .wrap{ grid-template-columns:1fr; gap:34px; }
}