/* =========================================================
   Ultra Servicios y Bienes Raíces — Sistema de diseño
   Tokens documentados. Paleta alineada al Manual de Identidad
   Ultrapark Development Group (Pantone 356U como primario).
   ========================================================= */

:root {
  /* Paleta — primarios (manual Ultrapark: P356U principal, P357U/P343U oscuros, P566U claro) */
  --c-primary: #1f6a50;
  --c-primary-dark: #164d38;
  --c-primary-deeper: #0e3527;
  --c-primary-tint: #a8d7b1;
  --c-primary-wash: #eaf3ed;

  /* Neutros — grafito y grises */
  --c-ink: #22282b;
  --c-ink-soft: #465054;
  --c-line: #dbe1dd;
  --c-bg: #f5f6f5;
  --c-surface: #ffffff;
  --c-inverse-text: #f2f5f3;

  /* Acento de alta visibilidad para CTA (ámbar industrial) */
  --c-accent: #f0a51f;
  --c-accent-ink: #1d1503;

  /* Semánticos */
  --c-error: #b3261e;
  --c-error-bg: #fdeceb;
  --c-success: #1f6a50;
  --c-success-bg: #eaf3ed;

  /* Tipografía — system font stack, escala modular 1.2 */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  --fs-sm: 0.875rem;   /* 14 */
  --fs-base: 1rem;     /* 16 */
  --fs-md: 1.125rem;   /* 18 */
  --fs-lg: 1.35rem;
  --fs-xl: 1.62rem;
  --fs-2xl: 1.94rem;
  --fs-3xl: clamp(2.1rem, 1.4rem + 2.4vw, 2.9rem);

  /* Espaciado — escala de 8 px */
  --s-1: 0.5rem;  /* 8 */
  --s-2: 1rem;    /* 16 */
  --s-3: 1.5rem;  /* 24 */
  --s-4: 2rem;    /* 32 */
  --s-5: 2.5rem;  /* 40 */
  --s-6: 3rem;    /* 48 */
  --s-8: 4rem;    /* 64 */
  --s-10: 5rem;   /* 80 */

  /* Radios y sombras */
  --r-sm: 6px;
  --r-md: 10px;
  --shadow-1: 0 1px 3px rgba(20, 30, 25, 0.10);
  --shadow-2: 0 4px 16px rgba(20, 30, 25, 0.12);

  --w-max: 72rem; /* 1152px */
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: 1.6;
  color: var(--c-ink);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 var(--s-2); color: var(--c-ink); }
h1 { font-size: var(--fs-3xl); letter-spacing: -0.01em; }
h2 { font-size: var(--fs-2xl); }
h3 { font-size: var(--fs-lg); }
h4 { font-size: var(--fs-md); }
p { margin: 0 0 var(--s-2); }
ul, ol { margin: 0 0 var(--s-2); padding-left: 1.25rem; }
li { margin-bottom: 0.35rem; }

a { color: var(--c-primary); text-underline-offset: 3px; }
a:hover { color: var(--c-primary-dark); }

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

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--c-primary-dark);
  color: #fff;
  padding: var(--s-1) var(--s-2);
  z-index: 100;
}
.skip-link:focus { left: var(--s-2); }

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0; border: 0;
  clip: rect(0 0 0 0); clip-path: inset(50%);
  overflow: hidden; white-space: nowrap;
}

.container {
  max-width: var(--w-max);
  margin-inline: auto;
  padding-inline: var(--s-2);
}

/* ---------- Encabezado y navegación ---------- */
.site-header {
  background: var(--c-surface);
  border-bottom: 1px solid var(--c-line);
  position: sticky;
  top: 0;
  z-index: 50;
}
.header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-2);
  min-height: 4.5rem;
}
.brand { display: flex; align-items: center; gap: var(--s-1); text-decoration: none; }
.brand img { width: clamp(180px, 42vw, 300px); height: auto; }

.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: none;
  border: 1px solid var(--c-line);
  border-radius: var(--r-sm);
  padding: 0.55rem 0.8rem;
  font: inherit;
  color: var(--c-ink);
  cursor: pointer;
}
.nav-toggle .bars { display: inline-block; width: 1.1rem; }
.nav-toggle .bars, .nav-toggle .bars::before, .nav-toggle .bars::after {
  content: ""; height: 2px; background: var(--c-ink); display: block; border-radius: 1px;
}
.nav-toggle .bars::before { transform: translateY(-5px); }
.nav-toggle .bars::after { transform: translateY(3px); }

.site-nav { display: none; }
.site-nav.is-open { display: block; position: absolute; inset: 100% 0 auto 0; background: var(--c-surface); border-bottom: 1px solid var(--c-line); box-shadow: var(--shadow-2); }
.site-nav ul { list-style: none; margin: 0; padding: var(--s-1) var(--s-2) var(--s-2); }
.site-nav li { margin: 0; }
.site-nav a, .submenu-toggle {
  display: block;
  width: 100%;
  text-align: left;
  padding: 0.65rem 0.5rem;
  color: var(--c-ink);
  text-decoration: none;
  font-weight: 500;
  font-size: var(--fs-base);
  background: none;
  border: 0;
  border-radius: var(--r-sm);
  cursor: pointer;
  font-family: inherit;
}
.site-nav a:hover, .submenu-toggle:hover { background: var(--c-primary-wash); color: var(--c-primary-dark); }
.site-nav a[aria-current="page"] { color: var(--c-primary-dark); box-shadow: inset 0 -2px 0 var(--c-primary); border-radius: 0; }

.has-submenu { position: relative; }
.submenu-toggle::after {
  content: ""; display: inline-block; margin-left: 0.4rem;
  border: 5px solid transparent; border-top-color: currentColor; transform: translateY(2px);
}
.submenu { list-style: none; padding-left: var(--s-2); display: none; }
.has-submenu.is-open > .submenu { display: block; }

.lang-switch {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--c-line);
  border-radius: var(--r-sm);
  overflow: hidden;
  flex-shrink: 0;
}
.lang-switch a, .lang-switch span[aria-current] {
  padding: 0.4rem 0.7rem;
  font-size: var(--fs-sm);
  font-weight: 600;
  text-decoration: none;
  color: var(--c-ink-soft);
}
.lang-switch span[aria-current] { background: var(--c-primary); color: #fff; }

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(115deg, var(--c-primary-deeper) 0%, var(--c-primary-dark) 55%, var(--c-primary) 100%);
  color: var(--c-inverse-text);
  padding-block: var(--s-8);
}
.hero .container { display: grid; gap: var(--s-4); }
.hero h1 { color: #fff; max-width: 34ch; }
.hero .lead { font-size: var(--fs-md); max-width: 56ch; color: var(--c-inverse-text); }
.hero-media img { border-radius: var(--r-md); box-shadow: var(--shadow-2); width: 100%; height: auto; object-fit: cover; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: var(--s-2); }

.page-hero {
  background: var(--c-primary-deeper);
  color: var(--c-inverse-text);
  padding-block: var(--s-6);
}
.page-hero h1 { color: #fff; }
.page-hero p { max-width: 62ch; margin-bottom: 0; color: var(--c-inverse-text); }

/* ---------- Botones ---------- */
.btn {
  display: inline-block;
  padding: 0.75rem 1.4rem;
  border-radius: var(--r-sm);
  font-weight: 700;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  font-size: var(--fs-base);
  font-family: inherit;
  transition: background-color 150ms ease, color 150ms ease, border-color 150ms ease;
}
.btn-primary { background: var(--c-accent); color: var(--c-accent-ink); }
.btn-primary:hover { background: #d8931a; color: var(--c-accent-ink); }
.btn-secondary { background: transparent; color: #fff; border-color: rgba(255,255,255,0.65); }
.btn-secondary:hover { background: rgba(255,255,255,0.12); color: #fff; }
.btn-outline { background: transparent; color: var(--c-primary-dark); border-color: var(--c-primary); }
.btn-outline:hover { background: var(--c-primary-wash); color: var(--c-primary-dark); }

/* ---------- Secciones ---------- */
.section { padding-block: var(--s-8); }
.section-alt { background: var(--c-surface); border-block: 1px solid var(--c-line); }
.section-head { max-width: 62ch; margin-bottom: var(--s-4); }
.section-head .kicker {
  display: inline-block;
  font-size: var(--fs-sm);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-primary);
  margin-bottom: var(--s-1);
}

/* ---------- Tarjetas ---------- */
.card-grid { display: grid; gap: var(--s-3); }
.card {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-1);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.card-media { aspect-ratio: 3 / 2; overflow: hidden; }
.card-media img { width: 100%; height: 100%; object-fit: cover; }
.card-body { padding: var(--s-3); display: flex; flex-direction: column; gap: var(--s-1); flex: 1; }
.card-body ul { margin-bottom: 0; color: var(--c-ink-soft); }
.card-link { margin-top: auto; font-weight: 700; text-decoration: none; }
.card-link::after { content: " →"; }

/* ---------- Franja de indicadores ---------- */
.kpi-strip { background: var(--c-primary-dark); color: #fff; padding-block: var(--s-5); }
.kpi-strip dl { display: grid; gap: var(--s-3); margin: 0; }
.kpi { text-align: center; display: flex; flex-direction: column; }
.kpi dt { order: 2; }
.kpi dt { font-size: var(--fs-sm); letter-spacing: 0.06em; text-transform: uppercase; color: var(--c-primary-tint); order: 2; }
.kpi dd { margin: 0; font-size: var(--fs-3xl); font-weight: 800; color: #fff; }

/* ---------- Tabla comparativa ---------- */
.table-wrap { overflow-x: auto; }
table.compare { width: 100%; border-collapse: collapse; background: var(--c-surface); border: 1px solid var(--c-line); border-radius: var(--r-md); font-size: var(--fs-sm); }
table.compare caption { text-align: left; font-weight: 700; padding: var(--s-2); font-size: var(--fs-base); }
table.compare th, table.compare td { padding: var(--s-2); border-top: 1px solid var(--c-line); text-align: left; vertical-align: top; }
table.compare thead th { background: var(--c-primary-wash); color: var(--c-primary-deeper); }
table.compare tbody th { font-weight: 600; width: 26%; }

/* ---------- Sellos / certificaciones ---------- */
.seal-grid { display: grid; gap: var(--s-2); grid-template-columns: repeat(auto-fill, minmax(14rem, 1fr)); }
.seal {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-left: 4px solid var(--c-primary);
  border-radius: var(--r-sm);
  padding: var(--s-2) var(--s-3);
}
.seal h3 { font-size: var(--fs-base); margin-bottom: 0.25rem; }
.seal p { font-size: var(--fs-sm); color: var(--c-ink-soft); margin: 0; }

/* ---------- Logos de parques ---------- */
.park-strip { display: flex; flex-wrap: wrap; gap: var(--s-2); align-items: stretch; }
.park {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 0.15rem;
  min-height: 5rem; min-width: 12rem; flex: 1 1 12rem;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--r-sm);
  padding: var(--s-2);
  text-align: center;
  font-weight: 700;
  color: var(--c-primary-deeper);
  letter-spacing: 0.04em;
}
.park small { display: block; font-weight: 400; color: var(--c-ink-soft); letter-spacing: 0; }
.park img { max-height: 3.2rem; width: auto; max-width: 100%; }

/* ---------- Acordeón ---------- */
.accordion { border: 1px solid var(--c-line); border-radius: var(--r-md); background: var(--c-surface); }
.accordion-item + .accordion-item { border-top: 1px solid var(--c-line); }
.accordion-trigger {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--s-2);
  padding: var(--s-2) var(--s-3);
  background: none;
  border: 0;
  font: inherit;
  font-weight: 600;
  color: var(--c-ink);
  text-align: left;
  cursor: pointer;
}
.accordion-trigger::after {
  content: "+";
  font-size: var(--fs-lg);
  color: var(--c-primary);
  flex-shrink: 0;
  line-height: 1;
}
.accordion-trigger[aria-expanded="true"]::after { content: "–"; }
.accordion-panel { padding: 0 var(--s-3) var(--s-3); color: var(--c-ink-soft); }
.accordion-panel[hidden] { display: none; }

/* ---------- Listas de verificación ---------- */
.check-list { list-style: none; padding-left: 0; }
.check-list li { padding-left: 1.6rem; position: relative; }
.check-list li::before {
  content: "";
  position: absolute; left: 0; top: 0.42em;
  width: 0.9rem; height: 0.5rem;
  border-left: 3px solid var(--c-primary);
  border-bottom: 3px solid var(--c-primary);
  transform: rotate(-45deg);
}

/* ---------- Split (texto + imagen) ---------- */
.split { display: grid; gap: var(--s-4); align-items: center; }
.split img { border-radius: var(--r-md); box-shadow: var(--shadow-1); width: 100%; object-fit: cover; }
.split .tall { max-height: 30rem; }

/* ---------- Marcas / plataformas ---------- */
.brand-groups { display: grid; gap: var(--s-3); }
.brand-group { background: var(--c-surface); border: 1px solid var(--c-line); border-radius: var(--r-md); padding: var(--s-3); }
.brand-group h3 { margin-bottom: var(--s-1); }
.tag-list { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: var(--s-1); }
.tag-list li {
  margin: 0;
  padding: 0.3rem 0.7rem;
  background: var(--c-bg);
  border: 1px solid var(--c-line);
  border-radius: 999px;
  font-size: var(--fs-sm);
  color: var(--c-ink-soft);
  font-weight: 600;
}

.logo-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(8.5rem, 1fr));
  gap: var(--s-1);
}
.logo-list li {
  margin: 0;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--r-sm);
  padding: 0.4rem 0.6rem;
  display: flex;
  align-items: center;
  justify-content: center;
}
.logo-list img { width: 100%; max-width: 9rem; height: auto; }

/* ---------- Casos ---------- */
.case-card { border-top: 4px solid var(--c-primary); }
.case-name { font-size: var(--fs-lg); font-weight: 800; color: var(--c-primary-deeper); letter-spacing: 0.02em; }
.case-meta { font-size: var(--fs-sm); color: var(--c-ink-soft); text-transform: uppercase; letter-spacing: 0.06em; }

/* ---------- Formulario ---------- */
.form-card { background: var(--c-surface); border: 1px solid var(--c-line); border-radius: var(--r-md); padding: var(--s-4); }
.form-grid { display: grid; gap: var(--s-3); }
.field label { display: block; font-weight: 600; margin-bottom: 0.35rem; }
.field .hint { font-size: var(--fs-sm); color: var(--c-ink-soft); margin-bottom: 0.35rem; }
.field input, .field select, .field textarea {
  width: 100%;
  padding: 0.7rem 0.8rem;
  border: 1px solid #9aa4a0;
  border-radius: var(--r-sm);
  font: inherit;
  color: var(--c-ink);
  background: var(--c-surface);
}
.field textarea { min-height: 8rem; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: 3px solid var(--c-accent);
  outline-offset: 1px;
  border-color: var(--c-primary);
}
.field.is-invalid input, .field.is-invalid select, .field.is-invalid textarea { border-color: var(--c-error); }
.field-error { color: var(--c-error); font-size: var(--fs-sm); margin-top: 0.35rem; }
.field-error:empty { display: none; }
fieldset { border: 1px solid var(--c-line); border-radius: var(--r-sm); padding: var(--s-2) var(--s-3); margin: 0; }
legend { font-weight: 700; padding-inline: 0.4rem; }
.radio-row { display: flex; flex-wrap: wrap; gap: var(--s-2); }
.radio-row label { display: flex; align-items: center; gap: 0.5rem; font-weight: 500; }
.consent { display: flex; gap: 0.6rem; align-items: flex-start; font-size: var(--fs-sm); color: var(--c-ink-soft); }
.consent input { margin-top: 0.25rem; }
.form-status { border-radius: var(--r-sm); padding: var(--s-2); font-weight: 600; }
.form-status[data-state="error"] { background: var(--c-error-bg); color: var(--c-error); }
.form-status[data-state="success"] { background: var(--c-success-bg); color: var(--c-primary-dark); }
.form-status:empty { display: none; }
/* Honeypot: fuera de flujo para humanos y lectores */
.hp-field { position: absolute !important; left: -9999px !important; width: 1px; height: 1px; overflow: hidden; }

/* ---------- Nota legal ---------- */
.note {
  background: var(--c-primary-wash);
  border-left: 4px solid var(--c-primary);
  border-radius: var(--r-sm);
  padding: var(--s-2) var(--s-3);
  font-size: var(--fs-sm);
  color: var(--c-ink-soft);
}

/* ---------- CTA band ---------- */
.cta-band { background: var(--c-primary-dark); color: #fff; padding-block: var(--s-6); }
.cta-band .container { display: grid; gap: var(--s-3); align-items: center; }
.cta-band h2 { color: #fff; margin-bottom: var(--s-1); }
.cta-band p { color: var(--c-inverse-text); margin: 0; max-width: 56ch; }

/* ---------- Pie de página ---------- */
.site-footer { background: var(--c-primary-deeper); color: var(--c-inverse-text); padding-block: var(--s-8) var(--s-4); font-size: var(--fs-sm); }
.site-footer a { color: #cfe6d8; }
.site-footer a:hover { color: #fff; }
.footer-grid { display: grid; gap: var(--s-4); margin-bottom: var(--s-4); }
.footer-grid h2 { font-size: var(--fs-base); color: #fff; margin-bottom: var(--s-1); }
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid li { margin-bottom: 0.4rem; }
.footer-legal { border-top: 1px solid rgba(255,255,255,0.2); padding-top: var(--s-3); color: #b9c9bf; }
.footer-legal p { margin-bottom: 0.4rem; }

/* ---------- Breakpoints: 480 / 768 / 1024 / 1440 ---------- */
@media (min-width: 480px) {
  .card-grid.cols-2, .card-grid.cols-3, .card-grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
  .kpi-strip dl { grid-template-columns: repeat(3, 1fr); }
  .hero-ctas .btn { flex: 0 0 auto; }
}

@media (min-width: 768px) {
  .card-grid.cols-3, .card-grid.cols-4 { grid-template-columns: repeat(3, 1fr); }
  .split { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; }
  .form-grid.cols-2 { grid-template-columns: 1fr 1fr; }
  .form-grid .span-2 { grid-column: span 2; }
  .cta-band .container { grid-template-columns: 1fr auto; }
  .hero .container { grid-template-columns: 1.1fr 0.9fr; align-items: center; }
  .brand-groups { grid-template-columns: 1fr 1fr; }
}

@media (min-width: 1024px) {
  .card-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
  .nav-toggle { display: none; }
  .site-nav { display: block; position: static; box-shadow: none; border: 0; }
  .site-nav.is-open { position: static; box-shadow: none; border: 0; }
  .site-nav > ul { display: flex; align-items: center; gap: 0.25rem; padding: 0; }
  .site-nav .submenu { display: none; }
  .site-nav .has-submenu.is-open > .submenu { display: block; }
  .site-nav a, .submenu-toggle { padding: 0.6rem 0.7rem; width: auto; font-size: var(--fs-sm); white-space: nowrap; }
  .submenu {
    position: absolute; top: 100%; left: 0;
    min-width: 16rem;
    background: var(--c-surface);
    border: 1px solid var(--c-line);
    border-radius: var(--r-sm);
    box-shadow: var(--shadow-2);
    padding: var(--s-1);
    z-index: 60;
  }
  .submenu a { white-space: normal; }
}

@media (min-width: 1440px) {
  :root { --w-max: 80rem; }
  .section { padding-block: var(--s-10); }
}

/* ---------- Movimiento reducido ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

/* ---------- Impresión ---------- */
@media print {
  .site-header, .site-footer, .cta-band, .hero-ctas { display: none; }
  body { background: #fff; }
}