/* =========================================================
   Leiva Servicios — styles.css
   Order: reduced-motion → custom props → reset →
          base → typography → components → sections → utilities
   ========================================================= */

/* ── 1. Reduced Motion (MANDATORY FIRST) ──────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  [data-parallax] { transform: none !important; }
  .fade-in-on-scroll { opacity: 1 !important; transform: none !important; }
}

/* ── 2. Custom Properties ─────────────────────────────────── */
:root {
  /* Surfaces */
  --color-charcoal:      #1A1F1D;
  --color-charcoal-lift: #252B28;
  --color-charcoal-deep: #12161A;
  --color-charcoal-top:  #141816;

  /* Foreground */
  --color-paper:         #F0EBE1;
  --color-paper-mute:    #C9C2B6;
  --color-ash:           #7C8480;

  /* Accents — SEMANTIC ROLES ENFORCED */
  --color-copper:        #C8794A; /* intentional UI only */
  --color-copper-deep:   #9E5D38;
  --color-copper-soft:   #E5A075;
  --color-teal:          #1F5C5A; /* AGUA card underline only */
  --color-teal-deep:     #143E3D;
  --color-moss:          #5C6B4A; /* EXTERIOR card underline only */
  --color-moss-deep:     #455138;

  /* Utility */
  --color-hairline:      rgba(240, 235, 225, 0.12);

  /* Typography scale — modular 1.25 */
  --text-hero:        clamp(2.25rem, 5vw, 4rem);
  --text-display-xl:  clamp(1.875rem, 4vw, 3rem);
  --text-display-lg:  clamp(1.5rem, 3vw, 2.25rem);
  --text-display-md:  clamp(1.25rem, 2vw, 1.75rem);
  --text-body-lg:     1.25rem;
  --text-body:        1.0625rem;
  --text-body-sm:     1rem;
  --text-caption:     0.875rem;
  --text-micro:       0.75rem;

  /* Motion curves */
  --ease-editorial:  cubic-bezier(0.22, 1, 0.36, 1);
  --ease-standard:   cubic-bezier(0.4, 0, 0.2, 1);
  --ease-slow-out:   cubic-bezier(0, 0, 0.2, 1);

  /* Durations */
  --dur-instant: 100ms;
  --dur-fast:    200ms;
  --dur-base:    300ms;
  --dur-slow:    600ms;

  /* Spacing */
  --space-section-sm: 4rem;
  --space-section:    6rem;
  --space-section-lg: 9rem;
  --space-gutter:     clamp(1.25rem, 4vw, 3rem);

  /* Layout */
  --max-width:       1200px;
  --max-width-prose: 68ch;
}

/* ── 3. Reset ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  background-color: var(--color-charcoal);
  color: var(--color-paper);
  font-family: 'Inter', system-ui, sans-serif;
  font-size: var(--text-body);
  line-height: 1.65;
  min-height: 100dvh;
}
img, video { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
a { color: inherit; text-decoration: none; }
button { background: none; border: none; cursor: pointer; font: inherit; color: inherit; }
:focus-visible {
  outline: 2px solid var(--color-copper-soft);
  outline-offset: 2px;
}

/* ── 4. Typography Base ───────────────────────────────────── */
.font-display {
  font-family: 'Fraunces', Georgia, serif;
  font-variation-settings: "opsz" 96, "SOFT" 30, "WONK" 0;
}
.font-display-small {
  font-family: 'Fraunces', Georgia, serif;
  font-variation-settings: "opsz" 48, "SOFT" 25, "WONK" 0;
}

/* ── 5. Layout Utilities ──────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-gutter);
}
.container--narrow {
  max-width: 72ch;
  text-align: center;
}

/* ── 6. Skip Link ─────────────────────────────────────────── */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-gutter);
  background: var(--color-copper);
  color: var(--color-charcoal);
  font-weight: 600;
  font-size: var(--text-body-sm);
  padding: 0.5rem 1rem;
  border-radius: 0 0 4px 4px;
  z-index: 1000;
  transition: top var(--dur-fast) var(--ease-standard);
}
.skip-link:focus {
  top: 0;
  outline: 2px solid var(--color-copper-soft);
  outline-offset: 2px;
}

/* ── 7. Lang Toggle (ES/EN CSS-attribute pattern) ─────────── */
[data-lang-content="en"] { display: none; }
/* Raise specificity for interactive elements so .cta-primary (0,1,0) can't override */
a[data-lang-content="en"],
button[data-lang-content="en"] { display: none; }
html[data-lang="en"] [data-lang-content="es"] { display: none; }
html[data-lang="en"] [data-lang-content="en"] { display: inline; }
/* Restore inline-flex for <a>/<button> elements that use it */
html[data-lang="en"] a[data-lang-content="en"],
html[data-lang="en"] button[data-lang-content="en"] { display: inline-flex; }

/* ── 8. Section Eyebrow ───────────────────────────────────── */
.eyebrow {
  font-size: var(--text-micro);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 500;
  color: var(--color-copper);
  display: inline-flex;
  align-items: center;
  margin-bottom: 1.25rem;
}
.eyebrow::before {
  content: '';
  display: inline-block;
  width: 32px;
  height: 1px;
  background: var(--color-copper);
  margin-right: 0.75rem;
  flex-shrink: 0;
}

/* ── 9. Section Header ────────────────────────────────────── */
.section-header {
  margin-bottom: 3rem;
}
.section-title {
  font-size: var(--text-display-xl);
  font-weight: 500;
  letter-spacing: -0.01em;
  line-height: 1.2;
  color: var(--color-paper);
}

/* ── 10. Primary CTA ──────────────────────────────────────── */
.cta-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  background: var(--color-copper);
  color: var(--color-charcoal);
  font-family: 'Inter', system-ui, sans-serif;
  font-size: var(--text-body-sm);
  font-weight: 600;
  padding: 0.875rem 1.75rem;
  border-radius: 9999px;
  min-height: 48px;
  min-width: 44px;
  text-decoration: none;
  transition:
    background var(--dur-fast) var(--ease-standard),
    transform var(--dur-fast) var(--ease-standard);
  cursor: pointer;
}
.cta-primary:hover {
  background: var(--color-copper-deep);
  transform: scale(1.02);
}
.cta-primary:focus-visible {
  outline: 2px solid var(--color-copper-soft);
  outline-offset: 2px;
}
.cta-primary:active { transform: scale(0.99); }

/* ── 11. Imagery ──────────────────────────────────────────── */
.img-editorial {
  position: relative;
  overflow: hidden;
}
.img-editorial::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('images/grain.svg');
  opacity: 0.03;
  mix-blend-mode: overlay;
  pointer-events: none;
}
.img-editorial img {
  filter: contrast(1.05) saturate(0.92);
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ── 12. Scroll Fade-in ───────────────────────────────────── */
.fade-in-on-scroll {
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity var(--dur-slow) var(--ease-editorial),
    transform var(--dur-slow) var(--ease-editorial);
}
.fade-in-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── 13. Site Header ──────────────────────────────────────── */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background: transparent;
  transition:
    background var(--dur-base) var(--ease-standard),
    backdrop-filter var(--dur-base) var(--ease-standard);
}
.site-header.is-scrolled {
  background: rgba(26, 31, 29, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.scroll-sentinel {
  position: absolute;
  top: 0;
  height: 80px;
  width: 1px;
  pointer-events: none;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.25rem var(--space-gutter);
  max-width: var(--max-width);
  margin-inline: auto;
}
.wordmark {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: var(--text-body-sm);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-paper);
  text-decoration: none;
  position: relative;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}
.wordmark::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--color-copper);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-fast) var(--ease-standard);
}
.wordmark:hover::after,
.wordmark:focus-visible::after { transform: scaleX(1); }

.header-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Lang toggle button */
.lang-toggle {
  font-size: var(--text-caption);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-paper-mute);
  border: 1px solid var(--color-hairline);
  border-radius: 9999px;
  padding: 0.375rem 0.875rem;
  min-height: 44px;
  min-width: 44px;
  transition:
    color var(--dur-fast) var(--ease-standard),
    border-color var(--dur-fast) var(--ease-standard);
  cursor: pointer;
}
.lang-toggle:hover { color: var(--color-paper); border-color: var(--color-copper); }
.lang-toggle:focus-visible {
  outline: 2px solid var(--color-copper-soft);
  outline-offset: 2px;
}

/* CTA in header */
.cta-header {
  font-size: var(--text-caption);
  padding: 0.5rem 1.25rem;
  min-height: 44px;
}

/* Hamburger (mobile only) */
.hamburger {
  display: none;
  min-height: 44px;
  min-width: 44px;
  align-items: center;
  justify-content: center;
  color: var(--color-paper);
  transition: color var(--dur-fast) var(--ease-standard);
}
.hamburger:hover { color: var(--color-copper); }

/* Mobile menu */
.mobile-menu {
  display: none;
  background: var(--color-charcoal-deep);
  border-top: 1px solid var(--color-hairline);
  overflow: hidden;
  max-height: 0;
  transition: max-height var(--dur-base) var(--ease-standard);
}
.mobile-menu.is-open {
  max-height: 240px;
}
.mobile-menu-inner {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 1.5rem var(--space-gutter);
  align-items: flex-start;
}

/* Hero-specific eyebrow override: sentence pill, not category label */
.section-hero .eyebrow {
  background: rgba(26, 31, 29, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  padding: 0.25rem 0.875rem;
  border-radius: 9999px;
  text-transform: none;
  letter-spacing: 0.01em;
  font-size: var(--text-caption);
  text-shadow: none;
}
.section-hero .eyebrow::before { display: none; }

/* ── 14. Hero Section ─────────────────────────────────────── */
.section-hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-img-wrap {
  width: 100%;
  height: 100%;
}
.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  will-change: transform;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(26, 31, 29, 0.45) 0%,
    rgba(26, 31, 29, 0.58) 45%,
    rgba(26, 31, 29, 0.92) 100%
  );
}
.hero-content {
  position: relative;
  z-index: 1;
  padding-top: var(--space-section-lg);
  padding-bottom: var(--space-section-lg);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1.5rem;
  max-width: min(var(--max-width), 100%);
}
.hero-headline {
  font-size: var(--text-hero);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--color-paper);
  max-width: 18ch;
  text-shadow: 0 1px 8px rgba(0,0,0,0.55);
}
.hero-sub {
  font-size: var(--text-body-lg);
  color: var(--color-paper-mute);
  max-width: 52ch;
  line-height: 1.6;
  text-shadow: 0 1px 6px rgba(0,0,0,0.5);
}
.hero-chip {
  font-size: var(--text-caption);
  color: var(--color-ash);
  letter-spacing: 0.04em;
  margin-top: -0.5rem;
  text-shadow: 0 1px 4px rgba(0,0,0,0.5);
}

/* ── 15. Servicios Section ────────────────────────────────── */
.section-servicios {
  padding-block: var(--space-section);
  background: var(--color-charcoal);
}
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
.service-card {
  background: var(--color-charcoal-lift);
  border: 1px solid rgba(240, 235, 225, 0.1);
  border-radius: 4px;
  overflow: hidden;
  transition:
    transform var(--dur-base) var(--ease-standard),
    border-color var(--dur-base) var(--ease-standard),
    box-shadow var(--dur-base) var(--ease-standard);
  cursor: default;
}
.service-card:hover {
  transform: translateY(-4px);
  border-color: rgba(200, 121, 74, 0.4);
  box-shadow: 0 8px 24px rgba(200, 121, 74, 0.12);
}
.card-img-wrap {
  aspect-ratio: 3 / 2;
  overflow: hidden;
}
.card-body {
  padding: 1.5rem;
}
.service-card__header {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: var(--text-caption);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-paper);
  padding-bottom: 0.75rem;
  margin-bottom: 1.25rem;
}
/* Per-card underline: semantic accent colors */
.service-card--agua .service-card__header     { border-bottom: 2px solid var(--color-teal); }
.service-card--exterior .service-card__header { border-bottom: 2px solid var(--color-moss); }
.service-card--interior .service-card__header { border-bottom: 2px solid var(--color-copper); }

.service-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.service-list li {
  font-size: var(--text-body-sm);
  color: var(--color-paper-mute);
  padding-left: 1rem;
  position: relative;
  line-height: 1.5;
}
.service-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--color-ash);
}

.cards-cta-note {
  margin-top: 2.5rem;
  font-size: var(--text-body-sm);
  color: var(--color-paper-mute);
  text-align: center;
}
.cards-cta-note a {
  color: var(--color-copper);
  transition: color var(--dur-fast) var(--ease-standard);
}
.cards-cta-note a:hover { color: var(--color-copper-deep); }
.cards-cta-note a:focus-visible {
  outline: 2px solid var(--color-copper-soft);
  outline-offset: 2px;
  border-radius: 2px;
}

/* ── 16. Zona de Servicio ─────────────────────────────────── */
.section-zona {
  padding-block: var(--space-section);
  background: var(--color-charcoal-lift);
}
.zona-grid {
  display: grid;
  grid-template-columns: 60fr 40fr;
  gap: 4rem;
  align-items: center;
}
.zona-img-wrap {
  aspect-ratio: 4 / 3;
  border-radius: 4px;
  overflow: hidden;
}
.zona-list {
  display: flex;
  flex-direction: column;
  margin-top: 1.5rem;
}
.zona-item {
  padding-block: 0.875rem;
  border-bottom: 1px solid var(--color-hairline);
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
}
.zona-item:first-child { border-top: 1px solid var(--color-hairline); }
.zona-name {
  font-family: 'Fraunces', Georgia, serif;
  font-variation-settings: "opsz" 48, "SOFT" 25, "WONK" 0;
  font-size: var(--text-display-md);
  font-weight: 500;
  color: var(--color-paper);
}
.zona-item--base .zona-name { color: var(--color-copper); }
.zona-item--more .zona-name { color: var(--color-paper-mute); font-size: var(--text-body-lg); }
.zona-sub {
  font-size: var(--text-caption);
  color: var(--color-ash);
  letter-spacing: 0.04em;
}
.zona-note {
  margin-top: 1.5rem;
  font-size: var(--text-caption);
  color: var(--color-ash);
  max-width: var(--max-width-prose);
}

/* ── 17. Por Qué Leiva ────────────────────────────────────── */
.section-porque {
  padding-block: var(--space-section);
  background: var(--color-charcoal);
}
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3rem;
}
.pillar {
  position: relative;
  padding-top: 5rem;
}
.pillar-num {
  position: absolute;
  top: 0;
  left: 0;
  font-family: 'Fraunces', Georgia, serif;
  font-variation-settings: "opsz" 96, "SOFT" 30, "WONK" 0;
  font-size: 5.5rem;
  font-weight: 700;
  color: var(--color-copper);
  opacity: 0.25;
  line-height: 1;
  user-select: none;
  font-feature-settings: "tnum";
}
.pillar-title {
  font-size: var(--text-display-md);
  font-weight: 500;
  color: var(--color-paper);
  margin-bottom: 0.875rem;
  letter-spacing: -0.01em;
  line-height: 1.25;
}
.pillar-desc {
  font-size: var(--text-body-sm);
  color: var(--color-paper-mute);
  max-width: 32ch;
  line-height: 1.6;
}

/* ── 18. Contacto ─────────────────────────────────────────── */
.section-contacto {
  padding-block: var(--space-section-lg);
  background: var(--color-charcoal-deep);
}
.section-contacto .container--narrow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}
.section-contacto .eyebrow {
  justify-content: center;
}
.contacto-headline {
  font-size: var(--text-display-xl);
  font-weight: 500;
  letter-spacing: -0.01em;
  line-height: 1.2;
  color: var(--color-paper);
  max-width: 22ch;
}
.contacto-body {
  font-size: var(--text-body);
  color: var(--color-paper-mute);
  max-width: var(--max-width-prose);
  line-height: 1.7;
}
.cta-contacto {
  font-size: var(--text-body);
  padding: 1rem 2.5rem;
  min-height: 56px;
  margin-top: 0.5rem;
}
.contacto-notes {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.375rem;
  margin-top: 0.5rem;
}
.contacto-notes li {
  font-size: var(--text-caption);
  color: var(--color-ash);
}

/* ── 19. Footer ───────────────────────────────────────────── */
.site-footer {
  background: var(--color-charcoal-deep);
  border-top: 1px solid var(--color-hairline);
  padding-block: 2.5rem;
}
.site-footer .container {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.footer-row {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.footer-row--brand {
  align-items: baseline;
  gap: 0.75rem;
}
.footer-wordmark {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: var(--text-caption);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-paper-mute);
}
.footer-tagline {
  font-size: var(--text-caption);
  color: var(--color-ash);
}
.footer-wa-link {
  font-size: var(--text-caption);
  color: var(--color-paper-mute);
  text-decoration: none;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  transition: color var(--dur-fast) var(--ease-standard);
}
.footer-wa-link:hover { color: var(--color-copper); }
.lang-toggle--footer {
  font-size: var(--text-caption);
  padding: 0.25rem 0.75rem;
  min-height: 36px;
}
.footer-row--legal {
  font-size: var(--text-caption);
  color: var(--color-ash);
}
.footer-credit {
  color: var(--color-ash);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--dur-fast) var(--ease-standard);
}
.footer-credit:hover { color: var(--color-paper-mute); }

/* ── 20. Dividers ─────────────────────────────────────────── */
.divider-hairline {
  border: 0;
  height: 1px;
  background: rgba(240, 235, 225, 0.1);
}

/* ── 21. Responsive ───────────────────────────────────────── */
@media (max-width: 1023px) {
  /* Header */
  .header-nav { display: none; }
  .hamburger { display: inline-flex; }
  .mobile-menu { display: block; }

  /* Cards: 2-col tablet, 3rd card full width */
  .cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .cards-grid .service-card:last-child {
    grid-column: 1 / -1;
    max-width: 50%;
    justify-self: start;
  }

  /* Pillars: 2-col tablet */
  .pillars-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
  }
}

@media (max-width: 767px) {
  /* Hero */
  .hero-headline { max-width: 100%; }
  .hero-img-wrap { aspect-ratio: 3 / 4; }

  /* Cards: single column */
  .cards-grid { grid-template-columns: 1fr; }
  .cards-grid .service-card:last-child {
    grid-column: auto;
    max-width: 100%;
  }

  /* Zona: stacked */
  .zona-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  /* Pillars: stacked */
  .pillars-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  /* Contacto CTA */
  .cta-contacto { width: 100%; justify-content: center; }
}

@media (min-width: 1024px) {
  /* Stagger service cards fade-in */
  .cards-grid .service-card:nth-child(2) { transition-delay: 100ms; }
  .cards-grid .service-card:nth-child(3) { transition-delay: 200ms; }

  /* Stagger pillars fade-in */
  .pillars-grid .pillar:nth-child(2) { transition-delay: 100ms; }
  .pillars-grid .pillar:nth-child(3) { transition-delay: 200ms; }
}