/* =========================================================
   MAESTUDIO · Arquitectura — hoja de estilos principal
   Cambia la paleta y tipografías desde :root
   ========================================================= */

:root {
  --bg: #f4eee6;
  --bg-alt: #dfcdb8;      /* beige de la marca */
  --ink: #111010;         /* negro del logo */
  --ink-soft: #5a5148;
  --line: #d3c4b1;
  --accent: #7d6650;      /* taupe */
  --white: #fffdf9;

  --serif: "Cormorant Garamond", Georgia, serif;
  --sans: "Inter", system-ui, -apple-system, sans-serif;

  --max: 1200px;
  --gutter: clamp(16px, 5vw, 64px);
  --radius: 2px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 300;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

h1, h2, h3 { font-family: var(--serif); font-weight: 500; line-height: 1.1; }
h1 { font-size: clamp(2.6rem, 6vw, 5rem); }
h2 { font-size: clamp(2rem, 4vw, 3.2rem); margin-bottom: 1rem; }
h3 { font-size: 1.6rem; }
em { font-style: italic; color: var(--accent); }

.eyebrow {
  font-size: .75rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
  font-weight: 500;
}

/* ---------- Botones ---------- */
.btn {
  display: inline-block;
  padding: .95rem 1.8rem;
  background: var(--ink);
  color: var(--white);
  border: 1px solid var(--ink);
  font: 500 .8rem/1 var(--sans);
  letter-spacing: .12em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background .3s, color .3s;
}
.btn:hover { background: transparent; color: var(--ink); }
.btn--ghost { background: transparent; color: var(--ink); }
.btn--ghost:hover { background: var(--ink); color: var(--white); }

/* ---------- Navegación ---------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.4rem var(--gutter);
  transition: background .3s, padding .3s, box-shadow .3s;
}
.nav.is-scrolled {
  background: rgba(244, 238, 230, .92);
  backdrop-filter: blur(8px);
  padding-block: .9rem;
  box-shadow: 0 1px 0 var(--line);
}
.nav__logo { display: flex; align-items: center; gap: .7rem; }
.nav__logo img { width: 28px; height: auto; }
.nav__logo span { font-family: var(--serif); font-size: 1.15rem; font-weight: 600; letter-spacing: .12em; }
.nav__menu { display: flex; gap: 2.2rem; align-items: center; }
.nav__menu a {
  font-size: .8rem; letter-spacing: .14em; text-transform: uppercase;
  position: relative;
}
.nav__menu a:not(.nav__cta)::after {
  content: ""; position: absolute; left: 0; bottom: -4px;
  width: 0; height: 1px; background: var(--accent); transition: width .3s;
}
.nav__menu a:hover::after { width: 100%; }
.nav__cta { border: 1px solid var(--ink); padding: .55rem 1.1rem; }
.nav__cta:hover { background: var(--ink); color: var(--white); }

.nav__toggle { display: none; background: none; border: 0; width: 32px; height: 24px; cursor: pointer; position: relative; }
.nav__toggle span { position: absolute; left: 0; width: 100%; height: 1.5px; background: var(--ink); transition: transform .3s, top .3s; }
.nav__toggle span:first-child { top: 7px; }
.nav__toggle span:last-child { top: 16px; }
.nav__toggle[aria-expanded="true"] span:first-child { top: 11px; transform: rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:last-child { top: 11px; transform: rotate(-45deg); }

/* ---------- Portada ---------- */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 4rem;
  padding: 8rem var(--gutter) 4rem;
  max-width: calc(var(--max) + 2 * var(--gutter));
  margin: 0 auto;
}
.hero__lead { font-size: 1.1rem; color: var(--ink-soft); max-width: 32rem; margin: 1.6rem 0 2.4rem; }
.hero__actions { display: flex; gap: 1rem; flex-wrap: wrap; }
.hero__image {
  aspect-ratio: 4 / 5;
  background:
    url("../img/portada.jpg") center / cover no-repeat,
    url("../img/logo.svg") center / 32% no-repeat,
    var(--bg-alt);
  position: relative;
}
.hero__image::after {
  content: ""; position: absolute; inset: 1.5rem -1.5rem -1.5rem 1.5rem;
  border: 1px solid var(--accent); z-index: -1;
}

/* ---------- Secciones ---------- */
.section {
  max-width: calc(var(--max) + 2 * var(--gutter));
  margin: 0 auto;
  padding: clamp(4rem, 10vw, 8rem) var(--gutter);
}
.section__head { margin-bottom: 3rem; max-width: 40rem; }

/* Estudio */
.estudio { display: grid; grid-template-columns: 5fr 6fr; gap: clamp(2rem, 6vw, 6rem); align-items: center; }
.estudio__photo {
  aspect-ratio: 3 / 4;
  background:
    url("../img/retrato.jpg") center / cover no-repeat,
    linear-gradient(200deg, #d9cfc1, #a9998a);
}
.estudio__text p + p { margin-top: 1rem; }
.estudio__text p { color: var(--ink-soft); }
.stats { list-style: none; display: flex; gap: 2.5rem; margin-top: 2.5rem; padding-top: 2rem; border-top: 1px solid var(--line); flex-wrap: wrap; }
.stats strong { display: block; font-family: var(--serif); font-size: 2.6rem; font-weight: 500; line-height: 1; }
.stats span { font-size: .8rem; color: var(--ink-soft); }
.stats--valores { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.stats--valores strong { font-size: 1.5rem; margin-bottom: .4rem; }
.stats--valores span { display: block; line-height: 1.5; }
@media (max-width: 720px) { .stats--valores { grid-template-columns: 1fr; gap: 1.2rem; } }

/* Proyectos */
.pronto {
  max-width: 44rem; padding: clamp(2rem, 5vw, 3.5rem);
  border: 1px dashed var(--line); background: var(--white);
}
.pronto h3 { font-size: 2rem; margin: 1rem 0 .8rem; }
.pronto p { color: var(--ink-soft); }
.pronto p + p { margin-top: .6rem; }
.pronto .btn { margin-top: 1.8rem; }
.pronto .badge { margin-left: 0; }
.filtros { display: flex; gap: .5rem; flex-wrap: wrap; margin-bottom: 2.5rem; }
.filtro {
  background: none; border: 1px solid var(--line); padding: .5rem 1.1rem;
  font: 400 .8rem var(--sans); letter-spacing: .08em; color: var(--ink-soft); cursor: pointer;
  transition: all .25s;
}
.filtro:hover { border-color: var(--ink); color: var(--ink); }
.filtro.is-active { background: var(--ink); border-color: var(--ink); color: var(--white); }

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: 260px;
  gap: 1.5rem;
}
.card { position: relative; overflow: hidden; cursor: pointer; transition: opacity .4s, transform .4s; }
.card--tall { grid-row: span 2; }
.card.is-hidden { display: none; }
.card__img {
  position: absolute; inset: 0;
  background-color: var(--tone);
  background-size: cover; background-position: center;
  transition: transform .8s cubic-bezier(.2, .7, .2, 1);
}
.card:hover .card__img { transform: scale(1.05); }
.card__info {
  position: absolute; inset: auto 0 0 0;
  padding: 1.4rem;
  background: linear-gradient(transparent, rgba(20, 18, 15, .65));
  color: var(--white);
}
.card__info h3 { font-size: 1.5rem; }
.card__info p { font-size: .8rem; opacity: .85; letter-spacing: .04em; }

/* Servicios */
.servicios { background: var(--bg-alt); max-width: none; }
.servicios .servicio p { color: #4a4239; }
.servicios > * { max-width: var(--max); margin-inline: auto; }
.servicios .section__head p { color: #4a4239; }
.servicios__list {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 1px; background: var(--line); border: 1px solid var(--line);
}
.servicio { background: var(--bg-alt); padding: 2.2rem 1.8rem; display: flex; flex-direction: column; transition: background .3s; }
.servicio:hover { background: #e7d8c6; }
.servicio__num { font-family: var(--serif); color: var(--accent); font-size: 1.1rem; }
.servicio h3 { margin: .8rem 0; }
.servicio p { color: var(--ink-soft); font-size: .95rem; flex-grow: 1; }
.servicio__link {
  margin-top: 1.4rem; align-self: flex-start;
  font-size: .75rem; letter-spacing: .12em; text-transform: uppercase; font-weight: 500;
  border-bottom: 1px solid var(--ink); padding-bottom: .2rem;
  transition: color .25s, border-color .25s;
}
.servicio__link:hover { color: var(--accent); border-color: var(--accent); }
.badge {
  display: inline-block; margin-left: .6rem; vertical-align: middle;
  padding: .2rem .6rem; border: 1px solid var(--accent); border-radius: 99px;
  font-family: var(--sans); font-size: .62rem; letter-spacing: .12em; text-transform: uppercase; color: var(--accent);
}
.servicio--pronto h3, .servicio--pronto p { opacity: .55; }
.servicio__link--off { border-bottom-style: dashed; color: var(--ink-soft); border-color: var(--ink-soft); cursor: default; }
.servicio__link--off:hover { color: var(--ink-soft); border-color: var(--ink-soft); }

/* Proceso */
.proceso { list-style: none; display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; counter-reset: paso; }
.proceso li { counter-increment: paso; position: relative; padding-top: 3.5rem; }
.proceso li::before {
  content: "0" counter(paso);
  position: absolute; top: 0; left: 0;
  font-family: var(--serif); font-size: 2.4rem; color: var(--line);
}
.proceso li::after {
  content: ""; position: absolute; top: 1.4rem; left: 3.5rem; right: -1rem;
  height: 1px; background: var(--line);
}
.proceso li:last-child::after { display: none; }
.proceso h3 { margin-bottom: .5rem; }
.proceso p { color: var(--ink-soft); font-size: .95rem; }

/* Contacto */
.contacto { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 6vw, 6rem); }
.contacto__info > p { color: var(--ink-soft); }
.contacto__datos { list-style: none; margin-top: 2.5rem; }
.contacto__datos li { display: flex; gap: 1.5rem; padding: .9rem 0; border-bottom: 1px solid var(--line); }
.contacto__datos span { width: 6rem; flex-shrink: 0; font-size: .75rem; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-soft); padding-top: .2rem; }
.contacto__datos a:hover { color: var(--accent); }

.form { display: grid; gap: 1.4rem; align-content: start; }
.form label { display: grid; gap: .4rem; font-size: .75rem; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-soft); }
.form input, .form select, .form textarea {
  font: 300 1rem var(--sans); color: var(--ink);
  background: transparent; border: 0; border-bottom: 1px solid var(--line);
  padding: .6rem 0; border-radius: 0; resize: vertical;
  transition: border-color .3s;
}
.form input:focus, .form select:focus, .form textarea:focus { outline: none; border-color: var(--ink); }
.form .is-invalid { border-color: #b4462f; }
.form .btn { justify-self: start; }
.form .btn:disabled { opacity: .6; cursor: wait; }
.form label small { text-transform: none; letter-spacing: 0; opacity: .8; }
.form__trampa { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form__status { font-size: .9rem; min-height: 1.5em; }
.form__status.ok { color: #4f7a52; }
.form__status.error { color: #b4462f; }

/* Pie */
.footer {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem;
  padding: 2rem var(--gutter);
  border-top: 1px solid var(--line);
  font-size: .8rem; color: var(--ink-soft);
}
.footer a:hover { color: var(--ink); }
.footer__marca { display: flex; align-items: center; gap: .6rem; }

/* Animación al hacer scroll */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .8s ease, transform .8s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .hero, .estudio, .contacto { grid-template-columns: 1fr; }
  .hero { min-height: auto; padding-top: 7rem; gap: 3rem; }
  .hero__image::after { display: none; }
  .grid { grid-template-columns: repeat(2, 1fr); }
  .servicios__list { grid-template-columns: repeat(2, 1fr); }
  .proceso { grid-template-columns: repeat(2, 1fr); }
  .proceso li::after { display: none; }
}

@media (max-width: 720px) {
  .nav__toggle { display: block; z-index: 2; }
  .nav__menu {
    position: fixed; inset: 0;
    flex-direction: column; justify-content: center; gap: 2rem;
    background: var(--bg);
    opacity: 0; pointer-events: none; transition: opacity .3s;
  }
  .nav__menu.is-open { opacity: 1; pointer-events: auto; }
  .nav__menu a { font-size: 1rem; }
  .grid { grid-template-columns: 1fr; grid-auto-rows: 320px; }
  .card--tall { grid-row: span 1; }
  .servicios__list, .proceso { grid-template-columns: 1fr; }
}