/* =====================================================================
   LIBERTINK — hoja de estilos
   Paleta monocroma: tinta sobre papel oscuro. Dos tipografías.
   ===================================================================== */
:root {
  --bg: #0a0a0a;
  --bg-2: #111111;
  --ink: #f2efe9;
  --ink-2: #b9b4ac;
  --muted: #8b8680;
  --line: rgba(242, 239, 233, 0.12);
  --line-strong: rgba(242, 239, 233, 0.28);
  --wa: #25d366;

  --font-display: "Cormorant Garamond", "Times New Roman", serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;

  --gutter: clamp(16px, 5vw, 72px);
  --max: 1280px;
  --ease: cubic-bezier(.2, .7, .2, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; scroll-padding-top: 96px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
h1, h2, h3 { font-family: var(--font-display); font-weight: 400; line-height: 1.05; margin: 0; letter-spacing: -0.01em; }
body { font-variant-numeric: lining-nums; }
.no-js .reveal, .no-js .tile { opacity: 1; transform: none; }
:focus-visible { outline: 1px solid var(--ink); outline-offset: 4px; }
p { margin: 0; }
::selection { background: var(--ink); color: var(--bg); }

.skip { position: absolute; left: -999px; top: 8px; background: var(--ink); color: var(--bg); padding: 8px 12px; z-index: 100; }
.skip:focus { left: 8px; }

/* ---------- Header ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  display: flex; align-items: center; gap: 32px;
  padding: 18px var(--gutter);
  transition: background .4s var(--ease), backdrop-filter .4s;
}
.site-header.is-scrolled { background: rgba(10,10,10,.72); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 12px; margin-right: auto; }
.brand__mark { width: 36px; height: 36px; opacity: .92; }
.brand__name { font-family: var(--font-display); font-size: 26px; letter-spacing: .02em; }
.nav { display: flex; gap: 28px; font-size: 13px; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-2); }
.nav a { position: relative; padding: 4px 0; transition: color .3s; }
.nav a::after { content: ""; position: absolute; left: 0; bottom: 0; width: 100%; height: 1px; background: var(--ink); transform: scaleX(0); transform-origin: right; transition: transform .4s var(--ease); }
.nav a:hover { color: var(--ink); }
.nav a:hover::after { transform: scaleX(1); transform-origin: left; }

.burger { display: none; width: 40px; height: 40px; position: relative; }
.burger span { position: absolute; left: 9px; width: 22px; height: 1px; background: var(--ink); transition: transform .3s var(--ease), top .3s var(--ease); }
.burger span:first-child { top: 15px; }
.burger span:last-child { top: 24px; }
.burger[aria-expanded="true"] span:first-child { top: 20px; transform: rotate(45deg); }
.burger[aria-expanded="true"] span:last-child { top: 20px; transform: rotate(-45deg); }

.mobile-nav {
  position: fixed; inset: 0; z-index: 40; background: var(--bg);
  display: flex; flex-direction: column; justify-content: center; gap: 8px;
  padding: 96px var(--gutter) 40px; overflow-y: auto;
  font-family: var(--font-display); font-size: clamp(38px, 9vw, 56px);
}
.mobile-nav[hidden] { display: none; }
.mobile-nav a { padding: 6px 0; border-bottom: 1px solid var(--line); }
.mobile-nav__cta { font-family: var(--font-body); font-size: 14px; letter-spacing: .12em; text-transform: uppercase; margin-top: 24px; color: var(--wa); border: 0 !important; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 16px 28px; border: 1px solid var(--ink);
  font-size: 13px; letter-spacing: .14em; text-transform: uppercase; font-weight: 400;
  transition: background .35s var(--ease), color .35s var(--ease), transform .35s var(--ease), border-color .35s;
  white-space: nowrap;
}
.btn--solid { background: var(--ink); color: var(--bg); }
.btn--solid:hover { background: transparent; color: var(--ink); }
.btn--ghost { border-color: var(--line-strong); color: var(--ink); }
.btn--ghost:hover { border-color: var(--ink); }
.btn--sm { padding: 11px 20px; font-size: 12px; }
.btn--block { width: 100%; white-space: normal; text-align: center; }
.link-arrow { font-size: 13px; letter-spacing: .12em; text-transform: uppercase; border-bottom: 1px solid var(--line-strong); padding-bottom: 4px; transition: border-color .3s; }
.link-arrow::after { content: " →"; }
.link-arrow:hover { border-color: var(--ink); }

/* ---------- Hero ---------- */
.hero {
  min-height: 100svh;
  display: grid; grid-template-columns: 1.1fr .9fr; align-items: center; gap: clamp(32px, 6vw, 96px);
  padding: 120px var(--gutter) 64px;
  max-width: var(--max); margin: 0 auto;
  position: relative;
}
.eyebrow { font-size: 12px; letter-spacing: .18em; text-transform: uppercase; color: var(--ink-2); margin-bottom: 28px; }
.display { font-size: clamp(56px, 8.5vw, 124px); line-height: .95; font-weight: 300; }
.display em { font-style: italic; font-weight: 300; color: var(--ink); }
.lead { max-width: 46ch; margin-top: 32px; font-size: clamp(16px, 1.3vw, 19px); color: var(--ink-2); }
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 40px; }
.hero__media { margin: 0; position: relative; aspect-ratio: 4 / 5; overflow: hidden; }
.hero__media img { width: 100%; height: 100%; object-fit: cover; transform: scale(1.04); transition: transform 1.6s var(--ease); filter: grayscale(1) contrast(1.02); }
.hero__media.is-in img { transform: scale(1); }
.hero__media figcaption { position: absolute; left: 0; bottom: 0; padding: 12px 16px; font-size: 11px; letter-spacing: .16em; text-transform: uppercase; color: var(--ink-2); background: linear-gradient(to top, rgba(10,10,10,.75), transparent); width: 100%; }
.hero__scroll { position: absolute; left: var(--gutter); bottom: 28px; width: 1px; height: 56px; background: var(--line); overflow: hidden; }
.hero__scroll span { position: absolute; inset: 0; background: var(--ink); animation: scroll-line 2.2s var(--ease) infinite; }
@keyframes scroll-line { 0% { transform: translateY(-100%); } 60%, 100% { transform: translateY(100%); } }

/* ---------- Marquee ---------- */
.marquee { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); overflow: hidden; padding: 18px 0; }
.marquee__track { display: flex; gap: 64px; width: max-content; animation: marquee 42s linear infinite; font-family: var(--font-display); font-size: 22px; font-style: italic; color: var(--ink-2); }
.marquee__track span::after { content: "·"; margin-left: 64px; color: var(--muted); }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- Sections ---------- */
.section { padding: clamp(80px, 11vw, 160px) var(--gutter); max-width: var(--max); margin: 0 auto; }
.section--tight { padding-top: clamp(48px, 7vw, 96px); padding-bottom: clamp(48px, 7vw, 96px); }
.section__head { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: end; margin-bottom: clamp(40px, 5vw, 72px); }
.section__head h2 { font-size: clamp(44px, 6vw, 84px); font-weight: 300; }
.section__head p { color: var(--ink-2); max-width: 48ch; font-size: 17px; }
.num { font-family: var(--font-body); font-size: 12px; letter-spacing: .18em; vertical-align: super; color: var(--muted); margin-right: 8px; font-weight: 400; }
.section__foot { margin-top: 48px; text-align: center; }

/* ---------- Filters + Gallery ---------- */
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 32px; }
.chip { padding: 9px 16px; border: 1px solid var(--line-strong); border-radius: 999px; font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-2); transition: all .3s var(--ease); }
.chip:hover { color: var(--ink); border-color: var(--ink); }
.chip.is-active { background: var(--ink); color: var(--bg); border-color: var(--ink); }

.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.tile {
  position: relative; overflow: hidden; background: var(--bg-2); aspect-ratio: 4 / 5;
  display: block;
  opacity: 0; transform: translateY(18px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
  padding: 0; text-align: left; width: 100%;
}
.tile.is-in { opacity: 1; transform: none; }
.tile img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(1); transition: transform 1.2s var(--ease), filter .6s; }
.tile[data-color] img { filter: none; }
.tile:hover img { transform: scale(1.04); }
.tile__meta { position: absolute; inset: auto 0 0 0; padding: 14px 16px; display: flex; justify-content: space-between; align-items: baseline; gap: 12px; background: linear-gradient(to top, rgba(10,10,10,.82), transparent); opacity: 0; transform: translateY(8px); transition: opacity .4s, transform .4s var(--ease); }
.tile:hover .tile__meta, .tile:focus-visible .tile__meta { opacity: 1; transform: none; }
.tile__meta strong { font-family: var(--font-display); font-weight: 400; font-size: 20px; }
.tile__meta span { font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-2); white-space: nowrap; }
.tile.is-hidden { display: none; }

/* ---------- Estilos ---------- */
.styles-list { list-style: none; margin: 0; padding: 0; counter-reset: st; border-top: 1px solid var(--line); }
.styles-list li { counter-increment: st; display: grid; grid-template-columns: 80px 1fr 1.4fr; gap: 24px; padding: 32px 0; border-bottom: 1px solid var(--line); align-items: baseline; }
.styles-list li::before { content: "0" counter(st); font-size: 12px; letter-spacing: .18em; color: var(--muted); }
.styles-list h3 { font-size: clamp(28px, 3vw, 40px); }
.styles-list p { color: var(--ink-2); max-width: 56ch; }

/* ---------- Calculadora ---------- */
.calc { display: grid; grid-template-columns: 1.2fr .8fr; gap: clamp(32px, 5vw, 80px); align-items: start; }
.calc__form fieldset { border: 0; padding: 0; margin: 0 0 36px; }
.calc__form legend { font-size: 12px; letter-spacing: .18em; text-transform: uppercase; color: var(--muted); margin-bottom: 14px; padding: 0; }
.seg { display: flex; border: 1px solid var(--line-strong); }
.seg--wrap { flex-wrap: wrap; border: 0; gap: 8px; margin-bottom: 18px; }
.seg--wrap .seg__btn { border: 1px solid var(--line-strong); }
.seg__btn { flex: 1; padding: 14px 10px; font-size: 13px; letter-spacing: .04em; text-align: center; color: var(--ink-2); transition: background .3s, color .3s; position: relative; }
.seg__btn + .seg__btn { border-left: 1px solid var(--line-strong); }
.seg--wrap .seg__btn { flex: 0 0 auto; padding: 10px 16px; }
.seg--wrap .seg__btn + .seg__btn { border-left: 1px solid var(--line-strong); }
.seg__btn:hover { color: var(--ink); }
.seg__btn.is-active { background: var(--ink); color: var(--bg); }
.seg__btn small { display: block; font-size: 11px; color: inherit; opacity: .7; margin-top: 2px; }

.dims { display: flex; align-items: end; gap: 16px; }
.dims label { display: grid; gap: 8px; position: relative; flex: 1; min-width: 0; }
.dims label span { font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.dims input, .select-wrap select {
  width: 100%; min-width: 0; background: transparent; color: var(--ink); border: 0; border-bottom: 1px solid var(--line-strong);
  padding: 10px 0; font: inherit; font-size: 28px; font-family: var(--font-display); outline: none; border-radius: 0; border-radius: 0; -webkit-appearance: none; appearance: none;
  transition: border-color .3s;
}
.dims input:focus, .select-wrap select:focus { border-color: var(--ink); }
.dims label i { position: absolute; right: 0; bottom: 14px; font-style: normal; font-size: 12px; color: var(--muted); letter-spacing: .1em; }
.dims__x { padding-bottom: 14px; color: var(--muted); font-size: 22px; }
.select-wrap { position: relative; }
.select-wrap select { font-size: 24px; padding-right: 32px; cursor: pointer; }
.select-wrap select option { background: var(--bg-2); color: var(--ink); font-family: var(--font-body); font-size: 16px; }
.select-wrap::after { content: "↓"; position: absolute; right: 0; bottom: 14px; color: var(--muted); pointer-events: none; }

.stepper { display: inline-flex; align-items: center; border: 1px solid var(--line-strong); }
.stepper button { width: 48px; height: 48px; font-size: 20px; color: var(--ink-2); transition: background .3s, color .3s; }
.stepper button:hover:not(:disabled) { background: var(--ink); color: var(--bg); }
.stepper button:disabled { opacity: .3; cursor: default; }
.check { display: flex; align-items: center; gap: 12px; margin-top: 18px; font-size: 14px; color: var(--ink-2); cursor: pointer; }
.check input { appearance: none; -webkit-appearance: none; width: 18px; height: 18px; border: 1px solid var(--line-strong); flex: none; display: grid; place-items: center; cursor: pointer; transition: background .25s, border-color .25s; }
.check input:checked { background: var(--ink); border-color: var(--ink); }
.check input:checked::after { content: ""; width: 6px; height: 10px; border: solid var(--bg); border-width: 0 1.5px 1.5px 0; transform: translateY(-1px) rotate(45deg); }
.stepper output { min-width: 56px; text-align: center; font-family: var(--font-display); font-size: 28px; }
.hint { margin-top: 12px; font-size: 13px; color: var(--ink-2); min-height: 1.4em; }
.hint strong { color: var(--ink); font-weight: 500; }

.calc__result { position: sticky; top: 100px; border: 1px solid var(--line-strong); padding: 32px; background: var(--bg-2); }
.calc__label { font-size: 12px; letter-spacing: .18em; text-transform: uppercase; color: var(--muted); }
.calc__price { font-family: var(--font-display); font-size: clamp(48px, 5.5vw, 72px); line-height: 1; margin: 12px 0 6px; font-weight: 300; transition: opacity .25s; }
.calc__price.is-updating { opacity: .35; }
.calc__range { color: var(--ink-2); font-size: 14px; }
.calc__breakdown { list-style: none; padding: 0; margin: 24px 0; border-top: 1px solid var(--line); }
.calc__breakdown li { display: flex; justify-content: space-between; gap: 16px; padding: 10px 0; border-bottom: 1px solid var(--line); font-size: 14px; color: var(--ink-2); }
.calc__breakdown li b { font-weight: 400; color: var(--ink); white-space: nowrap; }
.calc__breakdown li.is-promo b { color: var(--wa); }
.calc__note { margin-top: 16px; font-size: 12px; color: var(--muted); line-height: 1.5; }

.promos { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: clamp(48px, 6vw, 96px); }
.promo { border: 1px solid var(--line); padding: 28px; transition: border-color .4s; position: relative; overflow: hidden; }
.promo:hover { border-color: var(--line-strong); }
.promo__tag { font-size: 11px; letter-spacing: .18em; text-transform: uppercase; color: var(--muted); }
.promo h3 { font-size: 30px; margin: 10px 0 12px; }
.promo p { color: var(--ink-2); font-size: 15px; }
.promo--hi { border-color: var(--ink); }
.promo--hi .promo__tag { color: var(--ink); }

/* ---------- Sobre mí ---------- */
.about { display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(32px, 6vw, 96px); align-items: center; }
.about__media { margin: 0; aspect-ratio: 4 / 5; overflow: hidden; }
.about__media img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(1); }
.about__copy h2 { font-size: clamp(44px, 6vw, 84px); font-weight: 300; margin-bottom: 28px; }
.about__big { font-family: var(--font-display); font-size: clamp(24px, 2.6vw, 34px); line-height: 1.3; margin-bottom: 24px; }
.about__copy > p { color: var(--ink-2); margin-bottom: 18px; max-width: 58ch; }
.stats { display: flex; gap: 40px; margin: 40px 0 0; padding-top: 28px; border-top: 1px solid var(--line); }
.stats dt { font-family: var(--font-display); font-size: 44px; line-height: 1; }
.stats dd { margin: 6px 0 0; font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }

/* ---------- Accordion ---------- */
.accordion { border-top: 1px solid var(--line); max-width: 820px; }
.accordion details { border-bottom: 1px solid var(--line); }
.accordion summary { cursor: pointer; list-style: none; padding: 22px 0; font-family: var(--font-display); font-size: 28px; display: flex; justify-content: space-between; align-items: center; }
.accordion summary::-webkit-details-marker { display: none; }
.accordion summary::after { content: "+"; font-size: 24px; color: var(--muted); transition: transform .3s var(--ease); }
.accordion details[open] summary::after { transform: rotate(45deg); }
.accordion p { padding: 0 0 24px; color: var(--ink-2); max-width: 62ch; }

/* ---------- Estudio ---------- */
.studio { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 6vw, 96px); align-items: center; }
.studio h2 { font-size: clamp(44px, 6vw, 84px); font-weight: 300; margin-bottom: 28px; }
.studio__addr { font-family: var(--font-display); font-size: clamp(28px, 3vw, 40px); line-height: 1.15; margin-bottom: 18px; }
.studio__info > p { color: var(--ink-2); max-width: 48ch; }
.contact-list { list-style: none; padding: 0; margin: 32px 0 36px; border-top: 1px solid var(--line); }
.contact-list li { border-bottom: 1px solid var(--line); }
.contact-list a { display: flex; gap: 24px; padding: 16px 0; font-size: 17px; transition: padding-left .3s var(--ease); }
.contact-list a:hover { padding-left: 8px; }
.contact-list a span { width: 110px; flex: none; font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); align-self: center; }
.studio__map { aspect-ratio: 1 / 1; filter: grayscale(1) brightness(.85); border: 1px solid var(--line); }
.studio__map iframe { width: 100%; height: 100%; border: 0; display: block; }

/* ---------- Footer ---------- */
.site-footer { text-align: center; padding: 80px var(--gutter) 40px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.site-footer__logo { width: 160px; margin: 0 auto 24px; opacity: .85; }
.to-top { display: inline-block; margin-top: 24px; letter-spacing: .12em; text-transform: uppercase; font-size: 11px; color: var(--ink-2); }

/* ---------- WhatsApp flotante ---------- */
.wa-float {
  position: fixed; right: 20px; bottom: 20px; z-index: 45;
  width: 56px; height: 56px; border-radius: 50%; background: var(--wa); color: #062b14;
  display: grid; place-items: center; box-shadow: 0 10px 30px rgba(0,0,0,.45);
  transform: translateY(120px); transition: transform .5s var(--ease);
}
.wa-float.is-visible { transform: none; }
.wa-float:hover { transform: scale(1.06); }

/* ---------- Lightbox ---------- */
.lightbox { position: fixed; inset: 0; z-index: 60; background: rgba(6,6,6,.96); display: grid; place-items: center; padding: 24px; animation: fade .3s var(--ease); }
.lightbox[hidden] { display: none; }
@keyframes fade { from { opacity: 0; } }
.lightbox__fig { margin: 0; max-width: min(92vw, 900px); max-height: 90vh; display: grid; grid-template-rows: 1fr auto; gap: 16px; }
.lightbox__fig img { max-height: 76vh; width: auto; max-width: 100%; margin: 0 auto; object-fit: contain; }
.lightbox__fig figcaption { display: flex; gap: 20px; align-items: baseline; justify-content: center; flex-wrap: wrap; font-size: 14px; color: var(--ink-2); }
.lightbox__fig strong { font-family: var(--font-display); font-weight: 400; font-size: 24px; color: var(--ink); }
.lightbox__fig a { font-size: 12px; letter-spacing: .12em; text-transform: uppercase; border-bottom: 1px solid var(--line-strong); }
.lightbox__close { position: absolute; top: 16px; right: 20px; font-size: 40px; font-weight: 200; width: 48px; height: 48px; color: var(--ink-2); }
.lightbox__close:hover { color: var(--ink); }
.lightbox__nav { position: absolute; top: 50%; transform: translateY(-50%); width: 56px; height: 56px; font-size: 24px; color: var(--ink-2); }
.lightbox__nav:hover { color: var(--ink); }
.lightbox__nav--prev { left: 12px; }
.lightbox__nav--next { right: 12px; }

/* ---------- Reveal ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal, .tile { opacity: 1; transform: none; transition: none; }
  .marquee__track, .hero__scroll span { animation: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .seg:not(.seg--wrap) { display: grid; grid-template-columns: 1fr 1fr; }
  .seg:not(.seg--wrap) .seg__btn { border: 0; outline: 1px solid var(--line-strong); outline-offset: -1px; }
  .seg:not(.seg--wrap) .seg__btn:last-child:nth-child(odd) { grid-column: 1 / -1; }
  .styles-list li { grid-template-columns: 56px 1fr; }
  .styles-list li p { grid-column: 2; }
}
@media (max-width: 860px) {
  .nav, .site-header .btn { display: none; }
  .burger { display: block; }
  .hero { grid-template-columns: 1fr; padding-top: 110px; min-height: auto; gap: 40px; }
  .hero__media { aspect-ratio: 4 / 5; max-height: 70vh; }
  .hero__scroll { display: none; }
  .section__head { grid-template-columns: 1fr; gap: 16px; }
  .calc { grid-template-columns: 1fr; }
  .calc__result { position: static; }
  .promos { grid-template-columns: 1fr; }
  .about, .studio { grid-template-columns: 1fr; }
  .about__media { order: -1; aspect-ratio: 1; }
  .stats { gap: 24px; flex-wrap: wrap; }
  .studio__map { aspect-ratio: 4 / 3; }
}
@media (max-width: 600px) {
  .gallery { grid-template-columns: 1fr 1fr; gap: 8px; }
  .seg__btn small { display: none; }
  .calc__result { padding: 24px; }
  .wa-float { width: 50px; height: 50px; right: 14px; bottom: 14px; }
  .contact-list a { flex-direction: column; gap: 4px; }
  .contact-list a span { width: auto; }
  .lightbox__nav { display: none; }
}