/* ============================================================
   LODI — hoja de estilos
   Paleta y ritmo tipográfico inspirados en anthropic.com
   Editá las variables de :root para cambiar toda la identidad.
============================================================ */

:root {
  /* Color */
  --bg:            #fafaf7;
  --bg-alt:        #f0eee6;
  --ink:           #141413;
  --ink-soft:      #5c5b57;
  --ink-faint:     #8a8880;
  --line:          rgba(20, 20, 19, .12);
  --line-strong:   rgba(20, 20, 19, .22);
  --accent:        #cc785c;   /* book cloth */
  --accent-dark:   #b3634a;
  --kraft:         #d4a27f;
  --manilla:       #ebdbbc;
  --sky:           #b8c4d4;

  /* Tipografía */
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;
  --sans:  ui-sans-serif, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  /* Layout */
  --max:      1240px;
  --gutter:   clamp(20px, 5vw, 56px);
  --radius:   14px;
  --radius-lg: 22px;
  --header-h: 68px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, p, ul, figure { margin: 0; }
ul { list-style: none; padding: 0; }
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

.skip-link {
  position: absolute; left: -9999px; top: 8px; z-index: 200;
  background: var(--ink); color: var(--bg); padding: 10px 16px; border-radius: 8px;
}
.skip-link:focus { left: 16px; }

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

/* ---------- Botones ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 20px; border-radius: 999px;
  font-size: 15px; font-weight: 500; white-space: nowrap;
  transition: background-color .18s ease, color .18s ease, border-color .18s ease, transform .18s ease;
}
.btn--lg { padding: 14px 28px; font-size: 16px; }
.btn--primary { background: var(--accent); color: #fff; }
.btn--primary:hover { background: var(--accent-dark); }
.btn--dark { background: var(--ink); color: var(--bg); }
.btn--dark:hover { background: #2e2e2b; }
.btn--ghost { border: 1px solid var(--line-strong); }
.btn--ghost:hover { background: rgba(20, 20, 19, .05); }
.btn:active { transform: translateY(1px); }

.eyebrow {
  font-size: 12px; font-weight: 600; letter-spacing: .09em; text-transform: uppercase;
  color: var(--ink-faint);
}

.link-arrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 15px; font-weight: 500; padding-bottom: 2px;
  border-bottom: 1px solid var(--line-strong);
}
.link-arrow svg { width: 16px; height: 16px; transition: transform .2s ease; }
.link-arrow:hover svg { transform: translateX(3px); }

/* ============================================================
   HEADER
============================================================ */
.header {
  position: sticky; top: 0; z-index: 100;
  background: var(--bg);
  border-bottom: 1px solid transparent;
  transition: border-color .2s ease, background-color .2s ease;
}
.header.is-scrolled { border-bottom-color: var(--line); background: rgba(250, 250, 247, .9); backdrop-filter: blur(8px); }

.header__inner {
  max-width: var(--max); margin-inline: auto; padding-inline: var(--gutter);
  height: var(--header-h);
  display: flex; align-items: center; gap: 28px;
}

.logo { display: inline-flex; align-items: center; gap: 9px; }
.logo__mark {
  width: 22px; height: 22px; border-radius: 6px;
  background: var(--accent);
  box-shadow: inset 0 0 0 3px rgba(255, 255, 255, .55);
}
.logo__text { font-size: 19px; font-weight: 600; letter-spacing: .04em; }

.nav { margin-right: auto; }
.nav__list { display: flex; align-items: center; gap: 4px; }
.nav__item { position: relative; }
.nav__link {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 8px 12px; border-radius: 8px;
  font-size: 15px; color: var(--ink-soft);
  transition: color .15s ease, background-color .15s ease;
}
.nav__link:hover { color: var(--ink); background: rgba(20, 20, 19, .05); }
.nav__chevron { width: 12px; height: 12px; transition: transform .2s ease; }
.nav__item.is-open .nav__chevron { transform: rotate(180deg); }
.nav__item.is-open > .nav__link { color: var(--ink); }

.dropdown {
  position: absolute; top: calc(100% + 10px); left: 0;
  display: flex; gap: 36px;
  min-width: 260px; padding: 22px 24px;
  background: var(--bg); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: 0 14px 40px rgba(20, 20, 19, .10);
  animation: drop .16s ease;
}
.dropdown[hidden] { display: none; }
@keyframes drop { from { opacity: 0; transform: translateY(-6px); } }
.dropdown__group { display: flex; flex-direction: column; gap: 9px; }
.dropdown__title {
  font-size: 11px; font-weight: 600; letter-spacing: .1em; text-transform: uppercase;
  color: var(--ink-faint); margin-bottom: 2px; white-space: nowrap;
}
.dropdown__group a { font-size: 15px; color: var(--ink-soft); white-space: nowrap; }
.dropdown__group a:hover { color: var(--accent); }

.header__actions { display: flex; align-items: center; gap: 12px; }

.burger { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.burger span { display: block; width: 20px; height: 1.6px; background: var(--ink); transition: transform .2s ease, opacity .2s ease; }
.burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.6px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.6px) rotate(-45deg); }

/* ============================================================
   HERO
============================================================ */
.hero { padding: clamp(72px, 12vw, 148px) 0 clamp(56px, 8vw, 96px); }
.hero__title {
  font-family: var(--serif);
  font-size: clamp(2.6rem, 6.4vw, 5rem);
  line-height: 1.04;
  letter-spacing: -.025em;
  font-weight: 400;
  max-width: 17ch;
}
.hero__lead {
  margin-top: 28px; max-width: 54ch;
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  color: var(--ink-soft);
}
.hero__actions { margin-top: 38px; display: flex; flex-wrap: wrap; gap: 12px; }

/* ============================================================
   BANNER DESTACADO
============================================================ */
.feature-banner { padding-bottom: clamp(56px, 8vw, 96px); }
.feature-banner__box {
  display: grid; grid-template-columns: 1.05fr 1fr; align-items: stretch;
  background: var(--manilla);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.feature-banner__art {
  position: relative; min-height: 300px;
  background: linear-gradient(135deg, var(--kraft), var(--accent));
}
.feature-banner__art span {
  position: absolute; border-radius: 50%; border: 1.5px solid rgba(255, 255, 255, .5);
}
.feature-banner__art span:nth-child(1) { inset: 14% 18% auto auto; width: 130px; height: 130px; }
.feature-banner__art span:nth-child(2) { inset: auto auto 12% 12%; width: 190px; height: 190px; }
.feature-banner__art span:nth-child(3) { inset: 42% auto auto 46%; width: 72px; height: 72px; background: rgba(255, 255, 255, .28); border: 0; }
.feature-banner__body { padding: clamp(32px, 4.5vw, 56px); align-self: center; }
.feature-banner__title {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(1.7rem, 3vw, 2.5rem); line-height: 1.12; letter-spacing: -.02em;
  margin: 14px 0 14px;
}
.feature-banner__text { color: var(--ink-soft); max-width: 42ch; margin-bottom: 26px; }

/* ============================================================
   SECCIONES
============================================================ */
.section { padding: clamp(64px, 9vw, 112px) 0; }
.section--alt { background: var(--bg-alt); }

.section__head {
  display: flex; align-items: baseline; justify-content: space-between; gap: 24px;
  padding-bottom: 24px; margin-bottom: 44px;
  border-bottom: 1px solid var(--line);
}
.section__title {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(1.8rem, 3.4vw, 2.8rem); letter-spacing: -.02em;
}

/* ---------- Tarjetas de proyecto ----------
   Cada tarjeta ocupa cuatro filas de la grilla (imagen, titulo, texto y pie)
   y las comparte con las demas. Asi las cuatro partes quedan alineadas entre
   columnas sin reservar espacio de mas cuando los titulos son cortos.
   El margen negativo de .cards cancela el margen de la ultima fila. */
.cards {
  display: grid; grid-template-columns: repeat(3, 1fr);
  column-gap: 32px; row-gap: 0;
  margin-bottom: -44px;
}

.card {
  position: relative;
  display: grid; grid-template-rows: subgrid; grid-row: span 4;
  margin-bottom: 44px;
  transition: transform .25s ease;
}
.card__link { position: absolute; inset: 0; z-index: 2; border-radius: var(--radius); }
.card:hover { transform: translateY(-4px); }

.card__media {
  aspect-ratio: 16 / 10;
  border-radius: var(--radius);
  margin-bottom: 20px;
}
.card__media--1 { background: linear-gradient(140deg, var(--kraft), var(--accent)); }
.card__media--2 { background: linear-gradient(140deg, var(--manilla), var(--kraft)); }
.card__media--3 { background: linear-gradient(140deg, var(--sky), #8fa3bd); }

.card__title {
  font-family: var(--serif); font-weight: 400;
  font-size: 1.4rem; line-height: 1.22; letter-spacing: -.01em;
  margin-bottom: 10px;
  /* La fila del titulo mide lo que el titulo mas largo. Los cortos se apoyan
     abajo para quedar pegados a su parrafo, y el sobrante se va arriba. */
  align-self: end;
  /* Centrado respecto al bloque de color de la tarjeta. */
  text-align: center;
}
.card:hover .card__title { color: var(--accent); }
.card__text { font-size: 15px; color: var(--ink-soft); text-align: center; }
.card__foot {
  display: flex; justify-content: center; gap: 18px; margin-top: 20px; padding-top: 16px;
  border-top: 1px solid var(--line);
}
.card__meta { font-size: 13px; color: var(--ink-faint); }

/* ---------- Declaración + grilla de 5 ---------- */
.statement {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(1.8rem, 4vw, 3.1rem); line-height: 1.14; letter-spacing: -.025em;
  max-width: 22ch;
  margin-bottom: clamp(40px, 6vw, 68px);
}

.grid-5 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.tile {
  display: flex; flex-direction: column; gap: 10px;
  min-height: 200px; padding: 26px;
  background: var(--bg); border-radius: var(--radius);
  transition: transform .25s ease, box-shadow .25s ease;
}
.tile--wide { grid-column: span 2; background: var(--ink); color: var(--bg); }
.tile--wide .eyebrow { color: rgba(250, 250, 247, .6); }
.tile:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(20, 20, 19, .10); }
.tile__title {
  font-family: var(--serif); font-weight: 400;
  font-size: 1.35rem; line-height: 1.2; letter-spacing: -.01em;
}
.tile--wide .tile__title { font-size: clamp(1.6rem, 2.6vw, 2.1rem); }
.tile__arrow { margin-top: auto; font-size: 20px; color: var(--ink-faint); transition: transform .2s ease; }
.tile--wide .tile__arrow { color: rgba(250, 250, 247, .7); }
.tile:hover .tile__arrow { transform: translateX(4px); }

/* ============================================================
   PÁGINA DE PROYECTO
============================================================ */
.proyecto-hero { padding: clamp(40px, 6vw, 72px) 0 clamp(48px, 7vw, 80px); }
.volver {
  display: inline-flex; align-items: center; gap: 8px;
  margin-bottom: clamp(32px, 5vw, 56px);
  font-size: 14px; color: var(--ink-soft);
}
.volver:hover { color: var(--accent); }
.proyecto-hero__title {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(2.3rem, 5.4vw, 4.2rem); line-height: 1.06; letter-spacing: -.025em;
  margin-top: 12px; max-width: 18ch;
}
.proyecto-hero__lead {
  margin-top: 24px; max-width: 58ch;
  font-size: clamp(1.05rem, 1.6vw, 1.25rem); color: var(--ink-soft);
}

.ficha {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 24px;
  margin-top: clamp(40px, 5vw, 56px); padding-top: 28px;
  border-top: 1px solid var(--line);
}
.ficha dt {
  font-size: 11px; font-weight: 600; letter-spacing: .1em; text-transform: uppercase;
  color: var(--ink-faint); margin-bottom: 8px;
}
.ficha dd { margin: 0; font-size: 15px; }

/* ---------- Problema y solución ---------- */
.split { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(36px, 5vw, 72px); }
.split__title {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(1.5rem, 2.6vw, 2.1rem); line-height: 1.15; letter-spacing: -.02em;
  margin: 12px 0 18px;
}
.split__text { color: var(--ink-soft); margin-bottom: 16px; }
.lista { display: flex; flex-direction: column; gap: 14px; color: var(--ink-soft); }
.lista li { padding-left: 18px; position: relative; }
.lista li::before {
  content: ""; position: absolute; left: 0; top: 11px;
  width: 6px; height: 6px; border-radius: 50%; background: var(--accent);
}
.lista strong { color: var(--ink); font-weight: 600; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.chips li {
  padding: 6px 14px; border-radius: 999px;
  border: 1px solid var(--line-strong);
  font-size: 13.5px; color: var(--ink-soft);
}

/* ---------- Relato del proyecto ---------- */
.relato { max-width: 62ch; }
.relato p { margin-bottom: 20px; color: var(--ink-soft); }
.relato p:first-child {
  font-size: clamp(1.15rem, 1.8vw, 1.35rem); color: var(--ink);
  margin-bottom: 26px;
}
.relato p:last-child { margin-bottom: 0; }

/* ---------- Cifras ---------- */
/* Van despues del relato, en la misma seccion: primero la historia y al
   final los numeros que la respaldan. */
.cifras {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px;
  margin-top: 56px;
}
.cifra { padding-top: 24px; border-top: 2px solid var(--ink); }
.cifra__num {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(2.2rem, 4.4vw, 3.4rem); line-height: 1; letter-spacing: -.03em;
}
.cifra__text { margin-top: 14px; font-size: 15px; color: var(--ink-soft); }

/* ---------- Pasos del flujo ---------- */
.pasos { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 24px; }
.paso { display: flex; flex-direction: column; gap: 12px; }
.paso__num {
  display: grid; place-items: center;
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--ink); color: var(--bg);
  font-size: 14px; font-weight: 600;
}
.paso__title {
  font-family: var(--serif); font-weight: 400;
  font-size: 1.2rem; line-height: 1.2; letter-spacing: -.01em;
}
.paso__text { font-size: 14.5px; color: var(--ink-soft); }

/* ---------- Motores ---------- */
.motores { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.motor {
  display: flex; flex-direction: column;
  padding: clamp(28px, 3.4vw, 42px);
  background: var(--bg); border-radius: var(--radius-lg);
}
.motor--dark { background: var(--ink); color: var(--bg); }
.motor__num { font-size: 13px; font-variant-numeric: tabular-nums; color: var(--accent); letter-spacing: .08em; }
.motor__title {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(1.4rem, 2.2vw, 1.9rem); line-height: 1.15; letter-spacing: -.015em;
  margin: 14px 0 12px;
}
.motor__text { color: var(--ink-soft); }
.motor--dark .motor__text { color: rgba(250, 250, 247, .72); }

/* ---------- KPIs ---------- */
.kpis { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.kpi { padding: 28px; border: 1px solid var(--line); border-radius: var(--radius); }
.kpi__title {
  font-family: var(--serif); font-weight: 400;
  font-size: 1.3rem; letter-spacing: -.01em; margin-bottom: 12px;
}
.kpi__text { font-size: 15px; color: var(--ink-soft); }

/* ---------- Módulos ---------- */
.modulos { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 32px 28px; }
.modulo__title { font-size: 1.02rem; font-weight: 600; margin-bottom: 8px; }
.modulo__text { font-size: 14.5px; color: var(--ink-soft); }

/* ---------- CTA final ---------- */
.cta { padding: clamp(72px, 10vw, 128px) 0; }
.cta__inner { text-align: center; }
.cta__title {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(1.9rem, 4vw, 3rem); line-height: 1.12; letter-spacing: -.025em;
  max-width: 20ch; margin-inline: auto;
}
.cta__text { margin: 18px auto 32px; max-width: 46ch; color: var(--ink-soft); }
/* Al llegar desde las flechas de los servicios, deja arriba el alto del
   titulo y el parrafo, para que se vea el bloque completo y no solo el boton. */
#escribenos { scroll-margin-top: calc(340px + var(--header-h) + 24px); }

/* ============================================================
   FOOTER
============================================================ */
.footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--line);
  padding: clamp(48px, 6vw, 72px) 0 32px;
}
.footer__top {
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  padding-bottom: 36px; margin-bottom: 44px;
  border-bottom: 1px solid var(--line);
}
.social { display: flex; gap: 8px; }
.social a {
  display: grid; place-items: center; width: 36px; height: 36px;
  border-radius: 50%; color: var(--ink-soft);
  transition: background-color .18s ease, color .18s ease;
}
.social svg { width: 17px; height: 17px; }
.social a:hover { background: rgba(20, 20, 19, .08); color: var(--ink); }

.footer__cols {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 32px 24px;
}
.fcol { display: flex; flex-direction: column; gap: 10px; }
.fcol__title {
  font-size: 11px; font-weight: 600; letter-spacing: .1em; text-transform: uppercase;
  color: var(--ink-faint); margin-bottom: 4px;
}
.fcol a { font-size: 14px; color: var(--ink-soft); }
.fcol a:hover { color: var(--accent); }
.fcol__note { font-size: 14px; color: var(--ink-faint); }

.footer__bottom {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px 28px;
  margin-top: clamp(40px, 5vw, 64px); padding-top: 24px;
  border-top: 1px solid var(--line);
  font-size: 13px; color: var(--ink-faint);
}
.footer__legal { display: flex; flex-wrap: wrap; gap: 20px; }
.footer__legal a:hover { color: var(--accent); }

/* ============================================================
   ANIMACIÓN DE ENTRADA
============================================================ */
/* Solo se ocultan si el JS está activo, así nunca queda una página en blanco. */
.js .reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
.js .reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  .js .reveal { opacity: 1; transform: none; }
}

/* ============================================================
   RESPONSIVE
============================================================ */
@media (max-width: 1080px) {
  .footer__cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  .pasos { grid-template-columns: 1fr 1fr; gap: 32px 24px; }
  .modulos { grid-template-columns: 1fr 1fr; }
  .cifras { grid-template-columns: 1fr; gap: 24px; }
  .kpis { grid-template-columns: 1fr; }
  .split { grid-template-columns: 1fr; }
  .ficha { grid-template-columns: 1fr 1fr; }
  .cards { grid-template-columns: 1fr 1fr; }
  .grid-5 { grid-template-columns: 1fr 1fr; }
  .tile--wide { grid-column: span 2; }
  .feature-banner__box { grid-template-columns: 1fr; }
  .feature-banner__art { min-height: 220px; order: -1; }
}

@media (max-width: 760px) {
  .burger { display: flex; }
  .nav {
    position: fixed; inset: var(--header-h) 0 auto 0;
    max-height: calc(100dvh - var(--header-h));
    overflow-y: auto;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    padding: 12px var(--gutter) 28px;
    transform: translateY(-8px);
    opacity: 0; visibility: hidden; pointer-events: none;
    transition: opacity .2s ease, transform .2s ease, visibility .2s;
  }
  .nav.is-open { opacity: 1; visibility: visible; transform: none; pointer-events: auto; }
  .nav__list { flex-direction: column; align-items: stretch; gap: 0; }
  .nav__item { border-bottom: 1px solid var(--line); }
  .nav__link { padding: 16px 4px; font-size: 17px; width: 100%; justify-content: space-between; }
  .dropdown {
    position: static; flex-direction: column; gap: 18px;
    border: 0; box-shadow: none; background: none; padding: 4px 4px 18px;
    min-width: 0; animation: none;
  }
  .section__head { flex-direction: column; align-items: flex-start; gap: 14px; }
}

@media (max-width: 620px) {
  body { font-size: 16px; }
  .cards { grid-template-columns: 1fr; }
  .grid-5 { grid-template-columns: 1fr; }
  .tile--wide { grid-column: span 1; }
  .pasos { grid-template-columns: 1fr; }
  .motores { grid-template-columns: 1fr; }
  .modulos { grid-template-columns: 1fr; }
  .footer__cols { grid-template-columns: 1fr 1fr; }
  .footer__top { flex-direction: column; align-items: flex-start; gap: 20px; }
  .hero__actions .btn { flex: 1 1 auto; }
}