/* ==========================================================================
   YU Constructores · YU Construcciones S.A.S.
   Hoja de estilos principal
   Autor: Dr. Mauricio Rodríguez Herrera
   ========================================================================== */

/* ---------- 1. Tokens -------------------------------------------------- */
:root {
  /* Marca (muestreada del logotipo oficial) */
  --brand: #f5a302;
  --brand-600: #d98d00;
  --brand-300: #ffc24d;

  /* Tipografía */
  --font-body: 'Barlow', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-display: 'Barlow Condensed', 'Barlow', system-ui, sans-serif;

  /* Métrica */
  --wrap: 1200px;
  --gutter: clamp(1.25rem, 4vw, 2.5rem);
  --radius: 6px;
  --radius-lg: 10px;
  --header-h: 76px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* Tema oscuro (predeterminado) */
:root,
:root[data-theme='dark'] {
  --bg: #12161a;
  --bg-alt: #171c21;
  --surface: #1c2229;
  --surface-2: #252b33;
  --line: #2f3740;
  --line-soft: #232a31;
  --ink: #eef2f6;
  --ink-soft: #b6c0ca;
  --ink-mut: #8b959f;
  --on-brand: #14181c;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
  --grid-line: rgba(245, 163, 2, 0.055);
  --scrim: linear-gradient(90deg, rgba(10, 13, 16, 0.94) 0%, rgba(10, 13, 16, 0.82) 45%, rgba(10, 13, 16, 0.5) 100%);
  --glass: rgba(18, 22, 26, 0.86);
  color-scheme: dark;
}

/* Tema claro */
:root[data-theme='light'] {
  --bg: #f6f7f9;
  --bg-alt: #ffffff;
  --surface: #ffffff;
  --surface-2: #eef1f4;
  --line: #dbe0e6;
  --line-soft: #e7ebef;
  --ink: #161a1f;
  --ink-soft: #414b55;
  --ink-mut: #626d78;
  --on-brand: #14181c;
  --shadow: 0 16px 44px rgba(20, 26, 33, 0.12);
  --grid-line: rgba(20, 26, 33, 0.05);
  --scrim: linear-gradient(90deg, rgba(12, 15, 19, 0.9) 0%, rgba(12, 15, 19, 0.74) 45%, rgba(12, 15, 19, 0.42) 100%);
  --glass: rgba(255, 255, 255, 0.9);
  color-scheme: light;
}

/* ---------- 2. Base ---------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 12px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  overflow-x: hidden;
  transition: background-color .3s var(--ease), color .3s var(--ease);
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }

/* Iconos: trazo por defecto; los de marca traen su propio fill */
svg {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex: none;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: .005em;
  margin: 0;
  text-wrap: balance;
}

p { margin: 0; text-wrap: pretty; }

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

::selection { background: var(--brand); color: var(--on-brand); }

.skip-link {
  position: absolute;
  left: 50%;
  top: -100px;
  transform: translateX(-50%);
  z-index: 999;
  background: var(--brand);
  color: var(--on-brand);
  padding: .7rem 1.4rem;
  font-weight: 700;
  border-radius: 0 0 var(--radius) var(--radius);
  transition: top .2s var(--ease);
}
.skip-link:focus { top: 0; }

/* ---------- 3. Utilidades ---------------------------------------------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: clamp(4rem, 9vw, 7rem); position: relative; }
.section--alt { background: var(--bg-alt); }
.section--line { border-top: 1px solid var(--line-soft); }

.rule {
  width: 56px;
  height: 3px;
  background: var(--brand);
  border-radius: 2px;
}

.eyebrow {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: .85rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--brand);
  display: block;
}

.section-head { max-width: 760px; margin-bottom: clamp(2.5rem, 5vw, 3.5rem); }
.section-head--center { margin-inline: auto; text-align: center; }
.section-head--center .rule { margin-inline: auto; }
.section-head .rule { margin-bottom: 1.1rem; }
.section-head h2 {
  font-size: clamp(2rem, 4.6vw, 3.15rem);
  text-transform: uppercase;
  margin-block: .4rem .8rem;
}
.section-head p { color: var(--ink-soft); font-size: 1.06rem; }

.grid-texture::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 20%, transparent 78%);
}

/* ---------- 4. Botones -------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .6rem;
  padding: .92rem 1.7rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-weight: 700;
  font-size: .95rem;
  letter-spacing: .02em;
  transition: transform .18s var(--ease), background-color .2s var(--ease),
              border-color .2s var(--ease), color .2s var(--ease), box-shadow .2s var(--ease);
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn svg { width: 1.15em; height: 1.15em; flex: none; }

.btn--brand { background: var(--brand); color: var(--on-brand); box-shadow: 0 8px 24px rgba(245, 163, 2, .28); }
.btn--brand:hover { background: var(--brand-300); box-shadow: 0 12px 30px rgba(245, 163, 2, .38); }

.btn--ghost { border-color: var(--line); color: var(--ink); background: transparent; }
.btn--ghost:hover { border-color: var(--brand); color: var(--brand); }

.btn--light { background: rgba(255, 255, 255, .1); color: #fff; border-color: rgba(255, 255, 255, .3); backdrop-filter: blur(6px); }
.btn--light:hover { background: rgba(255, 255, 255, .18); border-color: #fff; }

.btn--sm { padding: .6rem 1.1rem; font-size: .85rem; }
.btn--block { width: 100%; }

/* ---------- 5. Cabecera ------------------------------------------------- */
.header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: var(--glass);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s var(--ease), background-color .3s var(--ease);
}
.header.is-stuck { border-bottom-color: var(--line); }

.header__inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand { display: flex; align-items: center; gap: .7rem; flex: none; }
.brand img { width: 40px; height: 40px; }
.brand__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.22rem;
  letter-spacing: .05em;
  text-transform: uppercase;
  line-height: 1;
}
.brand__name span { color: var(--brand); }
.brand__tag {
  display: block;
  font-family: var(--font-body);
  font-size: .62rem;
  letter-spacing: .19em;
  text-transform: uppercase;
  color: var(--ink-mut);
  font-weight: 600;
  margin-top: 3px;
}

.nav { display: flex; align-items: center; gap: 1.6rem; }
.nav a {
  position: relative;
  font-size: .93rem;
  font-weight: 500;
  color: var(--ink-soft);
  padding-block: .35rem;
  transition: color .2s var(--ease);
}
.nav a::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 2px;
  background: var(--brand);
  transition: width .25s var(--ease);
}
.nav a:hover, .nav a.is-active { color: var(--ink); }
.nav a:hover::after, .nav a.is-active::after { width: 100%; }

.header__tools { display: flex; align-items: center; gap: .55rem; }

.icon-btn {
  width: 40px; height: 40px;
  display: grid;
  place-items: center;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink-soft);
  transition: color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease);
}
.icon-btn:hover { color: var(--brand); border-color: var(--brand); }
.icon-btn svg { width: 19px; height: 19px; }
.theme-toggle .icon-moon { display: none; }
:root[data-theme='light'] .theme-toggle .icon-moon { display: block; }
:root[data-theme='light'] .theme-toggle .icon-sun { display: none; }

/* Selector de idioma */
.lang { position: relative; }
.lang__btn {
  display: flex; align-items: center; gap: .4rem;
  height: 40px; padding-inline: .75rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: transparent;
  color: var(--ink-soft);
  font-size: .82rem; font-weight: 700; letter-spacing: .08em;
  text-transform: uppercase;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.lang__btn:hover { color: var(--brand); border-color: var(--brand); }
.lang__btn svg { width: 15px; height: 15px; }
.lang__menu {
  position: absolute;
  top: calc(100% + 8px); right: 0;
  min-width: 178px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: .3rem;
  display: none;
  z-index: 60;
}
.lang.is-open .lang__menu { display: block; }
.lang__menu a {
  display: flex; align-items: center; gap: .6rem;
  width: 100%;
  padding: .55rem .7rem;
  color: var(--ink-soft);
  border-radius: 4px;
  font-size: .9rem;
  text-align: left;
}
.lang__menu a:hover { background: var(--surface-2); color: var(--ink); }
.lang__menu a[aria-current='true'] { color: var(--brand); font-weight: 700; }
.lang__menu b { font-family: var(--font-display); letter-spacing: .06em; width: 26px; flex: none; }

/* Menú móvil */
.burger { display: none; }
.mobile-nav {
  position: fixed;
  inset: var(--header-h) 0 0 0;
  background: var(--bg);
  z-index: 99;
  padding: 2rem var(--gutter) 3rem;
  overflow-y: auto;
  transform: translateY(-8px);
  opacity: 0;
  visibility: hidden;
  transition: opacity .25s var(--ease), transform .25s var(--ease), visibility .25s;
}
.mobile-nav.is-open { opacity: 1; visibility: visible; transform: none; }
.mobile-nav a {
  display: block;
  font-family: var(--font-display);
  font-size: 1.55rem;
  text-transform: uppercase;
  padding: .75rem 0;
  border-bottom: 1px solid var(--line-soft);
  color: var(--ink);
}
.mobile-nav .btn { margin-top: 1.8rem; }

/* ---------- 6. Héroe ---------------------------------------------------- */
.hero {
  position: relative;
  min-height: min(94vh, 860px);
  display: flex;
  align-items: center;
  padding-top: var(--header-h);
  overflow: hidden;
  isolation: isolate;
}
.hero__media { position: absolute; inset: 0; z-index: -2; }
.hero__media img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 1.4s var(--ease), transform 9s linear;
  transform: scale(1.06);
}
.hero__media img.is-active { opacity: 1; transform: scale(1); }
.hero::before {
  content: '';
  position: absolute; inset: 0;
  z-index: -1;
  background: var(--scrim);
}
.hero::after {
  content: '';
  position: absolute; inset: auto 0 0 0; height: 45%;
  z-index: -1;
  background: linear-gradient(to top, var(--bg), transparent);
}

.hero__inner { padding-block: clamp(3.5rem, 9vw, 6rem); position: relative; }
.hero__content { max-width: 780px; color: #fff; }
.hero h1 {
  font-size: clamp(2.4rem, 6.2vw, 4.6rem);
  text-transform: uppercase;
  margin-block: 1rem .1rem;
  text-shadow: 0 2px 30px rgba(0, 0, 0, .5);
}
.hero h1 em { font-style: normal; color: var(--brand); }
.hero__sub {
  font-size: clamp(1.02rem, 2vw, 1.22rem);
  color: rgba(255, 255, 255, .88);
  max-width: 60ch;
  margin-top: 1.2rem;
}
.hero__cta { display: flex; flex-wrap: wrap; gap: .9rem; margin-top: 2rem; }
.hero__chips {
  display: flex; flex-wrap: wrap; gap: .5rem;
  margin-top: 2.4rem;
}
.hero__chips span {
  font-size: .76rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .84);
  border: 1px solid rgba(255, 255, 255, .26);
  border-radius: 100px;
  padding: .34rem .85rem;
  backdrop-filter: blur(4px);
}
.hero__dots {
  position: absolute;
  right: var(--gutter); bottom: 2.2rem;
  display: flex; gap: .5rem;
  z-index: 3;
}
.hero__dots button {
  width: 30px; height: 3px;
  border: 0; padding: 0;
  background: rgba(255, 255, 255, .35);
  border-radius: 2px;
  transition: background-color .3s var(--ease);
}
.hero__dots button[aria-current='true'] { background: var(--brand); }

/* ---------- 7. Barra de cifras ----------------------------------------- */
.stats {
  background: var(--brand);
  color: var(--on-brand);
  position: relative;
  z-index: 2;
}
.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: rgba(20, 24, 28, .16);
}
.stats__item {
  background: var(--brand);
  padding: 2.1rem 1.2rem;
  text-align: center;
}
.stats__num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.1rem, 4.6vw, 3rem);
  line-height: 1;
  display: block;
}
.stats__label {
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .13em;
  text-transform: uppercase;
  margin-top: .5rem;
  opacity: .82;
}

/* ---------- 8. Tarjetas genéricas --------------------------------------- */
.cards { display: grid; gap: 1.25rem; }
.cards--4 { grid-template-columns: repeat(4, 1fr); }
.cards--3 { grid-template-columns: repeat(3, 1fr); }
.cards--2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 2rem 1.7rem;
  position: relative;
  overflow: hidden;
  transition: transform .3s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease);
}
.card::after {
  content: '';
  position: absolute; left: 0; top: 0;
  width: 100%; height: 3px;
  background: var(--brand);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s var(--ease);
}
.card:hover { transform: translateY(-5px); border-color: var(--line); box-shadow: var(--shadow); }
.card:hover::after { transform: scaleX(1); }
.card__icon {
  width: 52px; height: 52px;
  display: grid; place-items: center;
  border-radius: var(--radius);
  background: rgba(245, 163, 2, .12);
  color: var(--brand);
  margin-bottom: 1.15rem;
}
.card__icon svg { width: 25px; height: 25px; }
.card h3 { font-size: 1.32rem; margin-bottom: .55rem; }
.card p { color: var(--ink-mut); font-size: .95rem; }
.card__num {
  position: absolute;
  right: 1.1rem; top: .4rem;
  font-family: var(--font-display);
  font-size: 3.6rem;
  font-weight: 700;
  color: var(--ink);
  opacity: .05;
  line-height: 1;
}

/* ---------- 9. Proyectos ------------------------------------------------ */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  justify-content: center;
  margin-bottom: 2.5rem;
}
.filters button {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink-mut);
  padding: .5rem 1.1rem;
  border-radius: 100px;
  font-size: .86rem;
  font-weight: 600;
  transition: all .2s var(--ease);
}
.filters button:hover { color: var(--ink); border-color: var(--ink-mut); }
.filters button[aria-pressed='true'] {
  background: var(--brand);
  border-color: var(--brand);
  color: var(--on-brand);
}

.projects { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.35rem; }

.project {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
  text-align: left;
  padding: 0;
  color: inherit;
  display: flex;
  flex-direction: column;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s var(--ease);
}
.project.is-hidden { display: none; }
.project:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: var(--brand); }

.project__media { position: relative; aspect-ratio: 4 / 3; overflow: hidden; background: var(--surface-2); }
.project__media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .6s var(--ease);
}
.project:hover .project__media img { transform: scale(1.07); }
.project__badge {
  position: absolute; left: .85rem; top: .85rem;
  background: rgba(18, 22, 26, .82);
  color: #fff;
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  padding: .32rem .7rem;
  border-radius: 3px;
  backdrop-filter: blur(4px);
}
.project__count {
  position: absolute; right: .85rem; top: .85rem;
  display: flex; align-items: center; gap: .32rem;
  background: rgba(18, 22, 26, .82);
  color: #fff;
  font-size: .72rem;
  font-weight: 600;
  padding: .32rem .6rem;
  border-radius: 3px;
  backdrop-filter: blur(4px);
}
.project__count svg { width: 13px; height: 13px; }
.project__zoom {
  position: absolute; inset: 0;
  display: grid; place-items: center;
  background: rgba(245, 163, 2, .16);
  opacity: 0;
  transition: opacity .3s var(--ease);
}
.project:hover .project__zoom { opacity: 1; }
.project__zoom span {
  width: 54px; height: 54px;
  border-radius: 50%;
  background: var(--brand);
  color: var(--on-brand);
  display: grid; place-items: center;
}
.project__zoom svg { width: 22px; height: 22px; }

.project { cursor: pointer; }
.project__body { padding: 1.25rem 1.35rem 1.5rem; flex: 1; display: flex; flex-direction: column; }
.project__open {
  margin-top: auto;
  padding: .85rem 0 0;
  border: 0;
  background: none;
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  align-self: flex-start;
  color: var(--brand);
  font-size: .84rem;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
  transition: gap .2s var(--ease);
}
.project__open svg { width: 16px; height: 16px; }
.project:hover .project__open { gap: .8rem; }
.project__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .6rem;
  margin-bottom: .45rem;
}
.project__loc {
  display: flex; align-items: center; gap: .35rem;
  font-size: .78rem;
  color: var(--brand);
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
  min-width: 0;
}
.project__year {
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--ink-mut);
  white-space: nowrap;
  flex: none;
  font-variant-numeric: tabular-nums;
}
.project__loc svg { width: 13px; height: 13px; }
.project__body h3 { font-size: 1.25rem; margin-bottom: .45rem; }
.project__body p { font-size: .9rem; color: var(--ink-mut); }

/* ---------- 10. Visor de galería (lightbox) ----------------------------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(8, 10, 13, .96);
  display: none;
  flex-direction: column;
  backdrop-filter: blur(6px);
}
.lightbox.is-open { display: flex; }
body.is-locked { overflow: hidden; }

.lightbox__bar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem var(--gutter);
  color: #fff;
  border-bottom: 1px solid rgba(255, 255, 255, .1);
}
.lightbox__bar h3 { font-size: 1.35rem; text-transform: uppercase; }
.lightbox__bar p { font-size: .82rem; color: rgba(255, 255, 255, .62); }
.lightbox__close {
  width: 42px; height: 42px;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, .25);
  background: transparent;
  color: #fff;
  display: grid; place-items: center;
  flex: none;
}
.lightbox__close:hover { background: var(--brand); border-color: var(--brand); color: var(--on-brand); }
.lightbox__close svg { width: 20px; height: 20px; }

.lightbox__stage {
  flex: 1;
  position: relative;
  display: grid;
  place-items: center;
  padding: 1rem clamp(1rem, 6vw, 5rem);
  min-height: 0;
}
.lightbox__stage img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: var(--radius);
}
.lightbox__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px; height: 48px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, .25);
  background: rgba(0, 0, 0, .5);
  color: #fff;
  display: grid; place-items: center;
}
.lightbox__nav:hover { background: var(--brand); color: var(--on-brand); border-color: var(--brand); }
.lightbox__nav svg { width: 22px; height: 22px; }
.lightbox__nav.prev { left: clamp(.5rem, 2vw, 1.5rem); }
.lightbox__nav.next { right: clamp(.5rem, 2vw, 1.5rem); }

.lightbox__thumbs {
  display: flex;
  gap: .5rem;
  padding: .9rem var(--gutter) 1.3rem;
  overflow-x: auto;
  justify-content: center;
  flex-wrap: wrap;
}
.lightbox__thumbs button {
  width: 74px; height: 54px;
  border: 2px solid transparent;
  border-radius: 4px;
  overflow: hidden;
  padding: 0;
  background: none;
  opacity: .5;
  transition: opacity .2s var(--ease), border-color .2s var(--ease);
}
.lightbox__thumbs button img { width: 100%; height: 100%; object-fit: cover; }
.lightbox__thumbs button[aria-current='true'] { opacity: 1; border-color: var(--brand); }
.lightbox__thumbs button:hover { opacity: 1; }

/* ---------- 11. Proceso ------------------------------------------------- */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1rem; counter-reset: step; }
.step { position: relative; padding-top: 2.6rem; }
.step::before {
  counter-increment: step;
  content: '0' counter(step);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--brand);
  position: absolute;
  top: 0; left: 0;
  letter-spacing: .08em;
}
.step::after {
  content: '';
  position: absolute;
  top: 2rem; left: 0;
  width: 100%; height: 1px;
  background: var(--line);
}
.step:last-child::after { background: linear-gradient(90deg, var(--line), transparent); }
.step h3 { font-size: 1.2rem; margin-bottom: .5rem; }
.step p { font-size: .9rem; color: var(--ink-mut); }
.step__dot {
  position: absolute;
  top: calc(2rem - 4px); left: 0;
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--brand);
}

/* ---------- 12. Cobertura ----------------------------------------------- */
.coverage { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 4rem); align-items: start; }
.coverage__group + .coverage__group { margin-top: 1.8rem; }
.coverage__group h3 {
  font-size: 1.05rem;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--brand);
  margin-bottom: .8rem;
}
.chips { display: flex; flex-wrap: wrap; gap: .45rem; }
.chips li {
  list-style: none;
  font-size: .85rem;
  font-weight: 500;
  color: var(--ink-soft);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 100px;
  padding: .35rem .85rem;
}
.chips li.is-home { border-color: var(--brand); color: var(--brand); font-weight: 700; }
.map-frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  aspect-ratio: 4 / 3;
  background: var(--surface-2);
}
.map-frame iframe { width: 100%; height: 100%; border: 0; display: block; }

/* ---------- 13. Nosotros ------------------------------------------------ */
.about { display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(2rem, 5vw, 4.5rem); align-items: center; }
.about__media { position: relative; }
.about__media img { border-radius: var(--radius-lg); width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.about__media::after {
  content: '';
  position: absolute;
  right: -14px; bottom: -14px;
  width: 120px; height: 120px;
  border: 2px solid var(--brand);
  border-radius: var(--radius-lg);
  opacity: .5;
  z-index: -1;
}
.about__badge {
  position: absolute;
  left: -12px; bottom: 18px;
  background: var(--brand);
  color: var(--on-brand);
  padding: .9rem 1.2rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  max-width: 210px;
}
.about__badge b { font-family: var(--font-display); font-size: 1.7rem; display: block; line-height: 1; }
.about__badge span { font-size: .74rem; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; }
.about p + p { margin-top: 1rem; }
.about__list { list-style: none; padding: 0; margin: 1.6rem 0 0; display: grid; gap: .7rem; }
.about__list li { display: flex; gap: .65rem; align-items: flex-start; font-size: .95rem; color: var(--ink-soft); }
.about__list svg { width: 19px; height: 19px; color: var(--brand); flex: none; margin-top: .2rem; }
.about__credit {
  margin-top: 1.6rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line);
  font-size: .84rem;
  color: var(--ink-mut);
}

/* ---------- 14. Cotizador ----------------------------------------------- */
.quoter {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(1.6rem, 4vw, 2.6rem);
  box-shadow: var(--shadow);
}
.field { margin-bottom: 1.15rem; }
.field label,
.field legend {
  display: block;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .11em;
  text-transform: uppercase;
  color: var(--ink-mut);
  margin-bottom: .5rem;
  padding: 0;
}
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: .78rem .9rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--bg-alt);
  color: var(--ink);
  font-family: inherit;
  font-size: .95rem;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.field textarea { resize: vertical; min-height: 110px; }
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(245, 163, 2, .18);
}
.field fieldset { border: 0; padding: 0; margin: 0; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

.pills { display: flex; flex-wrap: wrap; gap: .5rem; }
.pills input { position: absolute; opacity: 0; width: 0; height: 0; }
.pills label {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  border: 1px solid var(--line);
  border-radius: 100px;
  padding: .5rem 1rem;
  font-size: .86rem;
  font-weight: 600;
  letter-spacing: 0;
  text-transform: none;
  color: var(--ink-soft);
  cursor: pointer;
  margin: 0;
  transition: all .2s var(--ease);
}
.pills label:hover { border-color: var(--ink-mut); color: var(--ink); }
.pills input:checked + label {
  background: var(--brand);
  border-color: var(--brand);
  color: var(--on-brand);
}
.pills input:focus-visible + label { outline: 3px solid var(--brand); outline-offset: 3px; }

.quoter__preview {
  margin-top: 1.2rem;
  padding: 1rem 1.1rem;
  border-radius: var(--radius);
  background: var(--bg-alt);
  border: 1px dashed var(--line);
  font-size: .88rem;
  color: var(--ink-mut);
  white-space: pre-line;
  min-height: 92px;
}
.note { font-size: .8rem; color: var(--ink-mut); margin-top: .9rem; }

/* ---------- 15. Contacto ------------------------------------------------ */
.contact { display: grid; grid-template-columns: .92fr 1.08fr; gap: clamp(2rem, 5vw, 3.5rem); align-items: start; }
.contact-list { display: grid; gap: 1rem; }
.contact-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1.15rem 1.25rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  transition: border-color .25s var(--ease), transform .25s var(--ease);
}
a.contact-item:hover { border-color: var(--brand); transform: translateX(4px); }
.contact-item__ico {
  width: 44px; height: 44px;
  flex: none;
  border-radius: var(--radius);
  background: rgba(245, 163, 2, .12);
  color: var(--brand);
  display: grid; place-items: center;
}
.contact-item__ico svg { width: 21px; height: 21px; }
.contact-item small {
  display: block;
  font-size: .72rem;
  letter-spacing: .13em;
  text-transform: uppercase;
  color: var(--ink-mut);
  font-weight: 700;
  margin-bottom: .12rem;
}
.contact-item b { font-size: 1rem; font-weight: 600; color: var(--ink); word-break: break-word; }
.form-status { margin-top: .9rem; font-size: .9rem; font-weight: 600; }
.form-status.ok { color: #4ade80; }
.form-status.err { color: #f87171; }

/* ---------- 16. FAQ ----------------------------------------------------- */
.faq { max-width: 860px; margin-inline: auto; display: grid; gap: .75rem; }
.faq details {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color .25s var(--ease);
}
.faq details[open] { border-color: var(--brand); }
.faq summary {
  list-style: none;
  cursor: pointer;
  padding: 1.15rem 1.4rem;
  display: flex;
  align-items: center;
  gap: .9rem;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--ink);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary .pill {
  width: 30px; height: 30px;
  flex: none;
  border-radius: 50%;
  background: rgba(245, 163, 2, .13);
  color: var(--brand);
  display: grid; place-items: center;
  font-family: var(--font-body);
  font-size: .82rem;
  font-weight: 800;
}
.faq summary .chev {
  margin-left: auto;
  flex: none;
  color: var(--ink-mut);
  transition: transform .3s var(--ease), color .3s var(--ease);
}
.faq summary .chev svg { width: 18px; height: 18px; display: block; }
.faq details[open] summary .chev { transform: rotate(180deg); color: var(--brand); }
.faq details > div { padding: 0 1.4rem 1.3rem 4.2rem; color: var(--ink-mut); font-size: .96rem; }

/* ---------- 17. Franja CTA ---------------------------------------------- */
.cta-band {
  position: relative;
  overflow: hidden;
  background: var(--surface);
  border-block: 1px solid var(--line);
  text-align: center;
}
.cta-band::before {
  content: '';
  position: absolute; inset: 0;
  background: repeating-linear-gradient(45deg, transparent 0 14px, rgba(245, 163, 2, .045) 14px 28px);
}
.cta-band > * { position: relative; }
.cta-band h2 { font-size: clamp(2rem, 5vw, 3.3rem); text-transform: uppercase; }
.cta-band p { color: var(--ink-soft); margin-block: .9rem 2rem; font-size: 1.08rem; }
.cta-band .btn-row { display: flex; gap: .9rem; justify-content: center; flex-wrap: wrap; }

/* ---------- 18. Pie ----------------------------------------------------- */
/* El relleno inferior reserva sitio para el botón flotante de WhatsApp,
   que antes tapaba la última línea del pie. */
.footer { background: var(--bg-alt); border-top: 1px solid var(--line); padding-block: 3.5rem 5.5rem; }
.footer__grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 2.5rem; }
.footer .footer__h {
  font-size: .82rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink);
  margin-bottom: 1.1rem;
  font-family: var(--font-body);
  font-weight: 800;
  line-height: 1.4;
}
.footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: .55rem; }
.footer a, .footer p, .footer li { color: var(--ink-mut); font-size: .92rem; }
.footer a:hover { color: var(--brand); }
.footer__logo { display: flex; align-items: center; gap: .7rem; margin-bottom: 1rem; }
.footer__logo img { width: 44px; height: 44px; }
.social { display: flex; gap: .55rem; margin-top: 1.1rem; }
.social a {
  width: 40px; height: 40px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  display: grid; place-items: center;
  color: var(--ink-mut);
  transition: all .2s var(--ease);
}
.social a:hover { background: var(--brand); border-color: var(--brand); color: var(--on-brand); }
.social svg { width: 18px; height: 18px; }
.footer__bottom {
  margin-top: 2.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: .84rem;
  color: var(--ink-mut);
}

/* ---------- 19. Flotantes ----------------------------------------------- */
.fab-wa {
  position: fixed;
  right: 20px; bottom: 20px;
  z-index: 90;
  display: flex;
  align-items: center;
  gap: .6rem;
  background: #25d366;
  color: #06301a;
  font-weight: 700;
  font-size: .92rem;
  padding: .85rem 1.15rem;
  border-radius: 100px;
  box-shadow: 0 12px 32px rgba(37, 211, 102, .38);
  transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}
.fab-wa:hover { transform: translateY(-3px) scale(1.02); box-shadow: 0 16px 40px rgba(37, 211, 102, .5); }
.fab-wa svg { width: 23px; height: 23px; flex: none; }

.to-top {
  position: fixed;
  right: 22px; bottom: 92px;
  z-index: 89;
  width: 42px; height: 42px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink-soft);
  display: grid; place-items: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all .25s var(--ease);
}
.to-top.is-visible { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { color: var(--brand); border-color: var(--brand); }
.to-top svg { width: 18px; height: 18px; }

/* ---------- 19b. Aviso de idioma ---------------------------------------- */
.lang-hint {
  position: fixed;
  left: 20px; bottom: 20px;
  z-index: 91;
  display: flex;
  align-items: center;
  gap: .75rem;
  max-width: min(92vw, 430px);
  padding: .8rem .9rem .8rem 1.1rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 3px solid var(--brand);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  font-size: .88rem;
  color: var(--ink-soft);
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .3s var(--ease), transform .3s var(--ease);
}
.lang-hint.is-in { opacity: 1; transform: none; }
.lang-hint__go {
  border: 0;
  background: var(--brand);
  color: var(--on-brand);
  font-weight: 700;
  font-size: .82rem;
  padding: .45rem .85rem;
  border-radius: 4px;
  white-space: nowrap;
}
.lang-hint__x {
  border: 0;
  background: none;
  color: var(--ink-mut);
  font-size: 1.3rem;
  line-height: 1;
  padding: 0 .2rem;
}
.lang-hint__x:hover { color: var(--ink); }
@media (max-width: 680px) {
  .lang-hint { left: 12px; right: 12px; bottom: 88px; max-width: none; }
}

/* ---------- 20. Animación de entrada ------------------------------------ */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.reveal.is-in { opacity: 1; transform: none; }

/* ---------- 21. Responsive ---------------------------------------------- */
@media (max-width: 1080px) {
  .cards--4 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(3, 1fr); row-gap: 2.2rem; }
  .projects { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
}

/* Entre 900 y 1100 px el menú completo más el CTA no caben: compactamos */
@media (max-width: 1100px) {
  .nav { gap: 1.1rem; }
  .nav a { font-size: .88rem; }
  .header__tools > .btn { display: none; }
}

@media (max-width: 900px) {
  .nav { display: none; }
  .burger { display: grid; }
  .about,
  .contact,
  .coverage { grid-template-columns: 1fr; }
  .about__media { order: -1; }
  .stats__grid { grid-template-columns: repeat(2, 1fr); }
  .cards--3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 680px) {
  :root { --header-h: 66px; }
  .brand__tag { display: none; }
  .brand img { width: 34px; height: 34px; }
  .brand__name { font-size: 1.05rem; }
  /* En móvil el CTA vive en el menú y en el botón flotante: liberamos la barra */
  .header__tools > .btn { display: none; }
  .brand { min-width: 0; }
  .brand__name { white-space: nowrap; }
  .cards--4, .cards--3, .cards--2 { grid-template-columns: 1fr; }
  .projects { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .field-row { grid-template-columns: 1fr; }
  .hero__dots { display: none; }
  .footer__grid { grid-template-columns: 1fr; }
  .faq details > div { padding-left: 1.4rem; }
  .fab-wa span { display: none; }
  .fab-wa { padding: .95rem; }
  .to-top { bottom: 84px; right: 20px; }
  .lightbox__thumbs { flex-wrap: nowrap; justify-content: flex-start; }
  .footer { padding-bottom: 6.5rem; }
  .footer__bottom { text-align: center; justify-content: center; }
}

/* Pantallas muy estrechas: compactamos la cabecera para que nada se salga */
@media (max-width: 420px) {
  :root { --gutter: 1rem; }
  .header__inner { gap: .4rem; }
  .brand { gap: .45rem; }
  .brand img { width: 28px; height: 28px; }
  .brand__name { font-size: .82rem; letter-spacing: .02em; }
  .header__tools { gap: .3rem; }
  .lang__btn { padding-inline: .45rem; gap: .25rem; }
  .icon-btn, .lang__btn { height: 34px; }
  .icon-btn { width: 34px; }
}

@media (max-width: 360px) {
  .lang__btn span { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    transition-duration: .001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}

@media print {
  .header, .fab-wa, .to-top, .hero__dots, .filters, .lightbox { display: none !important; }
  body { background: #fff; color: #000; }
}