/* ================================================================
   IREM – Inversiones Resinas Epóxicas Morán
   style.css · Dark Industrial Premium
   ================================================================ */

/* ── 1. TOKENS / VARIABLES ───────────────────────────────────────── */
:root {
  /* Colors */
  --clr-bg: #09090B;
  --clr-bg-2: #111113;
  --clr-bg-3: #18181B;
  --clr-surface: #1C1C1F;
  --clr-border: rgba(255, 255, 255, 0.07);

  --clr-accent: #F59E0B;
  /* Dorado industrial */
  --clr-accent-dim: rgba(245, 158, 11, 0.15);
  --clr-accent-glow: rgba(245, 158, 11, 0.35);

  --clr-whatsapp: #25D366;
  --clr-whatsapp-dk: #1DA851;

  --clr-text: #E4E4E7;
  --clr-text-muted: #71717A;
  --clr-text-faint: #3F3F46;

  /* Typography */
  --font-title: 'Montserrat', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 7rem;

  /* Sizes */
  --navbar-h: 72px;
  --radius: 0.75rem;
  --radius-lg: 1.25rem;

  /* Transitions */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --dur: 0.25s;
}

/* ── 2. RESET & BASE ─────────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--navbar-h);
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img,
video {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

button {
  font-family: var(--font-body);
  cursor: pointer;
  border: none;
  background: none;
}

/* ── 3. TYPOGRAPHY ───────────────────────────────────────────────── */
.section-eyebrow {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: var(--space-sm);
}

.section-title {
  font-family: var(--font-title);
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  color: #fff;
  line-height: 1.15;
  margin-bottom: var(--space-md);
}

.section-desc {
  font-size: 1.05rem;
  color: var(--clr-text-muted);
  max-width: 560px;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.section-header .section-desc {
  margin: 0 auto;
}

/* ── 4. SHARED LAYOUT ────────────────────────────────────────────── */
.section-container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-lg);
}

/* ── 5. BUTTONS ──────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 1.75rem;
  border-radius: 0.5rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1;
  transition: all var(--dur) var(--ease);
  white-space: nowrap;
}

.btn svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.btn-primary {
  background: var(--clr-accent);
  color: #09090B;
  box-shadow: 0 4px 20px var(--clr-accent-glow);
}

.btn-primary:hover {
  background: #FBBF24;
  box-shadow: 0 6px 28px rgba(245, 158, 11, 0.5);
  transform: translateY(-2px);
}

.btn-whatsapp-hero {
  background: rgba(37, 211, 102, 0.15);
  border: 1px solid rgba(37, 211, 102, 0.4);
  color: var(--clr-whatsapp);
}

.btn-whatsapp-hero:hover {
  background: rgba(37, 211, 102, 0.25);
  border-color: var(--clr-whatsapp);
  transform: translateY(-2px);
}

.btn-whatsapp-hero svg {
  width: 20px;
  height: 20px;
}

.btn-whatsapp {
  background: var(--clr-whatsapp);
  color: #fff;
  padding: 0.6rem 1.2rem;
  border-radius: 0.5rem;
}

.btn-whatsapp:hover {
  background: var(--clr-whatsapp-dk);
  transform: translateY(-1px);
}

.btn-nav {
  font-size: 0.875rem;
  padding: 0.6rem 1.25rem;
}

.btn-full {
  width: 100%;
  justify-content: center;
}

/* ── 6. NAVBAR ───────────────────────────────────────────────────── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--navbar-h);
  display: flex;
  align-items: center;
  transition: background var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.navbar.scrolled {
  background: rgba(9, 9, 11, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--clr-border);
}

.nav-container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  text-decoration: none;
}

.logo-img {
  height: 40px;
  width: auto;
  object-fit: contain;
}

/* Logo texto fallback (cuando no hay imagen) */
.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.logo-brand {
  font-family: var(--font-title);
  font-weight: 900;
  font-size: 1.4rem;
  letter-spacing: -0.02em;
  color: var(--clr-accent);
}

.logo-tagline {
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #ffffff;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  padding: 0.4rem 0.75rem;
  border-radius: 0.4rem;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.nav-link:hover,
.nav-link.active {
  color: #fff;
  background: var(--clr-border);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

/* Hamburger button */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 0.5rem;
  border-radius: 0.375rem;
  transition: background var(--dur) var(--ease);
  z-index: 1001;
}

.hamburger:hover {
  background: var(--clr-border);
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--clr-text);
  border-radius: 2px;
  transition: all var(--dur) var(--ease);
}

.hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.open span:nth-child(2) {
  opacity: 0;
}

.hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── 7. HERO ─────────────────────────────────────────────────────── */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100svh;
  padding-top: var(--navbar-h);
  overflow: hidden;

  /* HERO BACKGROUND PHOTO
     Reemplaza 'assets/img/hero-bg.jpg' con tu foto de piso más impresionante */
  background-image: url('assets/img/hero-bg.jpg');
  background-size: cover;
  background-position: center 30%;
  background-repeat: no-repeat;
}

/* Video de fondo (si activas el <video> en el HTML) */
.hero-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

/* Overlay oscuro para legibilidad */
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(170deg,
      rgba(9, 9, 11, 0.80) 0%,
      rgba(9, 9, 11, 0.55) 50%,
      rgba(9, 9, 11, 0.88) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 860px;
  width: 100%;
  padding: var(--space-xl) var(--space-lg);
  text-align: center;
}

.hero-eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: var(--space-md);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.hero-eyebrow::before,
.hero-eyebrow::after {
  content: '';
  display: inline-block;
  width: 30px;
  height: 1px;
  background: var(--clr-accent);
  opacity: 0.6;
}

.hero-title {
  font-family: var(--font-title);
  font-size: clamp(2rem, 6.5vw, 4.25rem);
  font-weight: 900;
  line-height: 1.1;
  color: #fff;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}

.hero-accent {
  color: var(--clr-accent);
  text-shadow: 0 0 40px var(--clr-accent-glow);
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: rgba(228, 228, 231, 0.8);
  max-width: 640px;
  margin: 0 auto var(--space-xl);
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: center;
}

/* Scroll indicator */
.hero-scroll-indicator {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}

.scroll-dot {
  width: 6px;
  height: 6px;
  background: var(--clr-accent);
  border-radius: 50%;
  animation: scroll-bounce 2s ease-in-out infinite;
}

@keyframes scroll-bounce {

  0%,
  100% {
    transform: translateY(0);
    opacity: 1;
  }

  50% {
    transform: translateY(12px);
    opacity: 0.4;
  }
}

/* ── 8. GALLERY ──────────────────────────────────────────────────── */
.gallery {
  background: var(--clr-bg-2);
  border-top: 1px solid var(--clr-border);
}

/* Filtros */
.gallery-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  justify-content: center;
  margin-bottom: var(--space-xl);
}

.filter-btn {
  padding: 0.5rem 1.25rem;
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  border: 1px solid var(--clr-border);
  background: transparent;
  transition: all var(--dur) var(--ease);
}

.filter-btn:hover {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.2);
}

.filter-btn.active {
  background: var(--clr-accent);
  color: #09090B;
  border-color: var(--clr-accent);
  font-weight: 600;
}

/* ── Masonry Grid ── */
.masonry-grid {
  columns: 4 260px;
  column-gap: 1rem;
}

.gallery-item {
  break-inside: avoid;
  position: relative;
  margin-bottom: 1rem;
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  background: var(--clr-surface);
  line-height: 0;
  /* elimina gap bajo img */
  border: 1px solid var(--clr-border);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), opacity 0.3s var(--ease);
}

.gallery-item img,
.gallery-item video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.55s var(--ease);
}

/* Control de alturas para columnas más dinámicas */
.gallery-item img,
.gallery-item video {
  aspect-ratio: 4 / 3;
}

.gallery-item--tall img,
.gallery-item--tall video {
  aspect-ratio: 3 / 4;
}

.gallery-item--wide img,
.gallery-item--wide video {
  aspect-ratio: 16 / 9;
}

.gallery-item:hover img,
.gallery-item:hover video {
  transform: scale(1.04);
}

/* Overlay hover */
.gallery-item-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top,
      rgba(9, 9, 11, 0.85) 0%,
      rgba(9, 9, 11, 0) 55%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--dur) var(--ease);
}

.gallery-item:hover .gallery-item-overlay {
  opacity: 1;
}

.gallery-icon {
  width: 36px;
  height: 36px;
  color: #fff;
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.8));
}

.play-icon {
  width: 52px;
  height: 52px;
}

.gallery-item-label {
  position: absolute;
  bottom: var(--space-sm);
  left: var(--space-sm);
  right: var(--space-sm);
  font-size: 0.8rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.9);
  letter-spacing: 0.03em;
  line-height: 1;
}

/* Placeholder visual cuando la imagen no carga */
.placeholder-item {
  background: linear-gradient(135deg, var(--clr-surface) 0%, #27272A 100%);
  min-height: 200px;
}

.placeholder-item::after {
  content: 'Tu foto aquí';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  color: var(--clr-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.placeholder-item img {
  visibility: hidden;
}

/* Item oculto por el filtro */
.gallery-item.hidden {
  display: none;
}

/* ── 9. LIGHTBOX ─────────────────────────────────────────────────── */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0, 0, 0, 0.95);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl) var(--space-sm);
  animation: lb-in 0.22s var(--ease);
}

.lightbox[hidden] {
  display: none;
}

@keyframes lb-in {
  from {
    opacity: 0;
    transform: scale(0.97);
  }

  to {
    opacity: 1;
    transform: scale(1);
  }
}

.lightbox-content {
  max-width: 1100px;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-content img,
.lightbox-content video {
  max-height: 80svh;
  width: auto;
  max-width: 100%;
  border-radius: var(--radius);
  object-fit: contain;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.8);
}

.lightbox-caption {
  margin-top: var(--space-sm);
  font-size: 0.9rem;
  color: var(--clr-text-muted);
  text-align: center;
}

.lightbox-close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  transition: background var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.lightbox-close:hover {
  background: rgba(255, 255, 255, 0.18);
  transform: rotate(90deg);
}

.lightbox-close svg {
  width: 20px;
  height: 20px;
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  transition: background var(--dur) var(--ease);
}

.lightbox-nav:hover {
  background: rgba(255, 255, 255, 0.18);
}

.lightbox-nav svg {
  width: 22px;
  height: 22px;
}

.lightbox-prev {
  left: var(--space-md);
}

.lightbox-next {
  right: var(--space-md);
}

/* ── 10. SERVICES ────────────────────────────────────────────────── */
.services {
  background: var(--clr-bg);
  border-top: 1px solid var(--clr-border);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.service-card {
  position: relative;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-lg);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.service-card:hover {
  border-color: var(--clr-accent);
  transform: translateY(-6px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4), 0 0 0 1px var(--clr-accent);
}

.service-card--featured {
  border-color: rgba(245, 158, 11, 0.3);
  background: linear-gradient(145deg, #1C1C1F 0%, #23200E 100%);
}

.service-badge {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #09090B;
  background: var(--clr-accent);
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
}

.service-icon-wrap {
  width: 60px;
  height: 60px;
  margin-bottom: var(--space-md);
}

.service-icon-wrap svg {
  width: 60px;
  height: 60px;
}

.service-title {
  font-family: var(--font-title);
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.25rem;
}

.service-category {
  font-size: 0.775rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: var(--space-sm);
}

.service-desc {
  font-size: 0.92rem;
  color: var(--clr-text-muted);
  line-height: 1.8;
  margin-bottom: var(--space-md);
}

.service-features {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.service-features li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--clr-text-muted);
}

.service-features li::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--clr-accent);
  flex-shrink: 0;
}

/* ── 11. CONTACT ─────────────────────────────────────────────────── */
.contact {
  background: var(--clr-bg-2);
  border-top: 1px solid var(--clr-border);
}

.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: start;
}

/* Left panel */
.contact-info {
  position: sticky;
  top: calc(var(--navbar-h) + var(--space-lg));
}

.contact-location {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.95rem;
  color: var(--clr-text-muted);
  margin-bottom: var(--space-md);
}

.contact-location svg {
  width: 16px;
  height: 16px;
  color: var(--clr-accent);
  flex-shrink: 0;
}

.contact-location strong {
  color: var(--clr-text);
}

.contact-intro {
  color: var(--clr-text-muted);
  line-height: 1.8;
  margin-bottom: var(--space-lg);
}

.contact-intro strong {
  color: var(--clr-text);
}

/* WhatsApp CTA big button */
.btn-whatsapp-big {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  background: var(--clr-whatsapp);
  color: #fff;
  padding: 1.1rem 1.75rem;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: var(--space-lg);
  transition: background var(--dur) var(--ease), transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
  animation: pulse-wa 2.4s ease-in-out infinite;
  box-shadow: 0 8px 32px rgba(37, 211, 102, 0.3);
}

.btn-whatsapp-big:hover {
  background: var(--clr-whatsapp-dk);
  transform: translateY(-3px) scale(1.01);
  box-shadow: 0 14px 40px rgba(37, 211, 102, 0.45);
  animation: none;
}

.btn-whatsapp-big svg {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.btn-whatsapp-big span {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.btn-whatsapp-big small {
  font-size: 0.75rem;
  font-weight: 400;
  opacity: 0.85;
}

/* WhatsApp pulse animation */
@keyframes pulse-wa {
  0% {
    box-shadow: 0 8px 32px rgba(37, 211, 102, 0.3);
  }

  50% {
    box-shadow: 0 8px 50px rgba(37, 211, 102, 0.55);
  }

  100% {
    box-shadow: 0 8px 32px rgba(37, 211, 102, 0.3);
  }
}

/* ── WhatsApp Contact Selector Popup ─────────────────────── */
.wa-selector-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  opacity: 0;
  animation: waFadeIn 0.25s ease forwards;
}

.wa-selector-overlay[hidden] {
  display: none;
}

@keyframes waFadeIn {
  to {
    opacity: 1;
  }
}

.wa-selector-popup {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: 1.25rem;
  padding: 2rem;
  width: 90%;
  max-width: 440px;
  position: relative;
  box-shadow: 0 25px 80px rgba(0, 0, 0, 0.4);
  transform: translateY(20px) scale(0.97);
  animation: waSlideUp 0.3s ease 0.05s forwards;
}

@keyframes waSlideUp {
  to {
    transform: translateY(0) scale(1);
  }
}

.wa-selector-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--clr-text-muted);
  padding: 0.35rem;
  border-radius: 0.5rem;
  transition: color 0.2s, background 0.2s;
}

.wa-selector-close svg {
  width: 22px;
  height: 22px;
}

.wa-selector-close:hover {
  color: var(--clr-text);
  background: rgba(255, 255, 255, 0.08);
}

.wa-selector-header {
  text-align: center;
  margin-bottom: 1.5rem;
}

.wa-selector-icon {
  width: 40px;
  height: 40px;
  color: var(--clr-whatsapp);
  margin-bottom: 0.75rem;
}

.wa-selector-header h3 {
  font-family: var(--font-title);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: 0.35rem;
}

.wa-selector-header p {
  font-size: 0.88rem;
  color: var(--clr-text-muted);
}

.wa-selector-contacts {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.wa-contact-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border: 1px solid var(--clr-border);
  border-radius: 0.875rem;
  background: var(--clr-bg-2);
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s, transform 0.15s, box-shadow 0.2s;
  text-decoration: none;
  color: inherit;
}

.wa-contact-card:hover {
  border-color: var(--clr-whatsapp);
  background: rgba(37, 211, 102, 0.06);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.15);
}

.wa-contact-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--clr-whatsapp);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: #fff;
  font-weight: 700;
  font-size: 1.1rem;
  font-family: var(--font-title);
}

.wa-contact-info {
  flex: 1;
  min-width: 0;
}

.wa-contact-name {
  font-weight: 600;
  font-size: 1rem;
  color: var(--clr-text);
  margin-bottom: 0.15rem;
}

.wa-contact-role {
  font-size: 0.82rem;
  color: var(--clr-text-muted);
}

.wa-contact-arrow {
  width: 20px;
  height: 20px;
  color: var(--clr-whatsapp);
  flex-shrink: 0;
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity 0.2s, transform 0.2s;
}

.wa-contact-card:hover .wa-contact-arrow {
  opacity: 1;
  transform: translateX(0);
}

@media (max-width: 480px) {
  .wa-selector-popup {
    padding: 1.5rem 1.25rem;
  }

  .wa-selector-header h3 {
    font-size: 1.1rem;
  }

  .wa-contact-card {
    padding: 0.85rem 1rem;
  }
}

.contact-social p {
  font-size: 0.85rem;
  color: var(--clr-text-muted);
  margin-bottom: var(--space-sm);
}

.social-links {
  display: flex;
  gap: var(--space-sm);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 0.5rem;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  color: var(--clr-text-muted);
  transition: all var(--dur) var(--ease);
}

.social-link:hover {
  color: var(--clr-accent);
  border-color: var(--clr-accent);
  background: var(--clr-accent-dim);
  transform: translateY(-2px);
}

.social-link svg {
  width: 18px;
  height: 18px;
}

/* Form */
.contact-form-wrap {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-lg);
}

.form-title {
  font-family: var(--font-title);
  font-size: 1.3rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.25rem;
}

.form-subtitle {
  font-size: 0.9rem;
  color: var(--clr-text-muted);
  margin-bottom: var(--space-lg);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: var(--space-md);
}

.form-group label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--clr-text);
}

.form-group label span {
  color: var(--clr-accent);
}

.form-group input,
.form-group textarea {
  background: var(--clr-bg);
  border: 1px solid var(--clr-border);
  border-radius: 0.5rem;
  padding: 0.75rem 1rem;
  font-family: var(--font-body);
  font-size: 0.925rem;
  color: var(--clr-text);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
  width: 100%;
  outline: none;
  resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--clr-text-faint);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--clr-accent);
  box-shadow: 0 0 0 3px var(--clr-accent-dim);
}

.form-group input.invalid,
.form-group textarea.invalid {
  border-color: #EF4444;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

.form-error {
  font-size: 0.78rem;
  color: #EF4444;
  min-height: 1em;
}

.form-success {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  background: rgba(37, 211, 102, 0.1);
  border: 1px solid rgba(37, 211, 102, 0.25);
  border-radius: var(--radius);
  padding: var(--space-sm) var(--space-md);
  margin-top: var(--space-md);
  color: var(--clr-whatsapp);
}

.form-success[hidden] {
  display: none;
}

.form-success svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.form-success p {
  font-size: 0.9rem;
}

/* ── 12. FOOTER ──────────────────────────────────────────────────── */
.footer {
  background: var(--clr-bg-3);
  border-top: 1px solid var(--clr-border);
}

.footer-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: var(--space-xl) var(--space-lg);
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--space-xl);
}

.footer-brand p {
  margin-top: var(--space-sm);
  font-size: 0.9rem;
  color: var(--clr-text-muted);
  line-height: 1.7;
}

.footer-links h4,
.footer-contact h4 {
  font-family: var(--font-title);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-text-muted);
  margin-bottom: var(--space-md);
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-links a {
  font-size: 0.9rem;
  color: var(--clr-text-muted);
  transition: color var(--dur) var(--ease);
}

.footer-links a:hover {
  color: var(--clr-accent);
}

.footer-contact p {
  font-size: 0.9rem;
  color: var(--clr-text-muted);
  margin-bottom: 0.4rem;
}

.footer-wa {
  display: inline-block;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--clr-whatsapp);
  transition: opacity var(--dur) var(--ease);
}

.footer-wa:hover {
  opacity: 0.8;
}

.footer-bottom {
  border-top: 1px solid var(--clr-border);
  padding: var(--space-md) var(--space-lg);
  max-width: 1280px;
  margin: 0 auto;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

.footer-bottom p {
  font-size: 0.8rem;
  color: var(--clr-text-faint);
  text-align: center;
}

.admin-access-link {
  font-size: 0.85rem;
  opacity: 0.2;
  transition: opacity 0.2s;
  text-decoration: none;
  flex-shrink: 0;
}

.admin-access-link:hover {
  opacity: 0.6;
}

/* ── 13. RESPONSIVE ──────────────────────────────────────────────── */

/* Tablet grande (max 1024px) */
@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-container {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
  }
}

/* Tablet (max 768px) */
@media (max-width: 768px) {

  :root {
    --space-2xl: 5rem;
    --space-xl: 3rem;
  }

  /* Navbar mobile */
  .hamburger {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(320px, 85vw);
    background: rgba(9, 9, 11, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-left: 1px solid var(--clr-border);
    flex-direction: column;
    align-items: flex-start;
    padding: calc(var(--navbar-h) + var(--space-lg)) var(--space-lg) var(--space-lg);
    transform: translateX(100%);
    transition: transform 0.35s var(--ease);
    gap: var(--space-xs);
  }

  .nav-menu.open {
    transform: translateX(0);
  }

  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
    gap: 0.25rem;
    margin-bottom: var(--space-lg);
  }

  .nav-link {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
  }

  .btn-nav {
    width: 100%;
    justify-content: center;
  }

  /* Gallery */
  .masonry-grid {
    columns: 2 140px;
  }

  /* Services */
  .services-grid {
    grid-template-columns: 1fr;
  }

  /* Contact */
  .contact-inner {
    grid-template-columns: 1fr;
  }

  .contact-info {
    position: static;
  }

  /* Footer */
  .footer-container {
    grid-template-columns: 1fr 1fr;
  }
}

/* Móvil (max 480px) */
@media (max-width: 480px) {
  :root {
    --space-2xl: 4rem;
  }

  .masonry-grid {
    columns: 1;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }

  .footer-container {
    grid-template-columns: 1fr;
  }

  .contact-form-wrap {
    padding: var(--space-lg) var(--space-md);
  }

  .lightbox-nav {
    display: none;
  }

  /* Touch swipe handles it */
}

/* ── 14. SCROLL ANIMATIONS ───────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

.reveal-delay-1 {
  transition-delay: 0.1s;
}

.reveal-delay-2 {
  transition-delay: 0.2s;
}

.reveal-delay-3 {
  transition-delay: 0.3s;
}

/* ── 15. PERFORMANCE & OPTIMIZACIÓN ──────────────────────────────── */

/*
 * prefers-reduced-motion: desactiva TODAS las animaciones/transiciones
 * para usuarios que lo soliciten (accesibilidad + rendimiento).
 */
@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;
  }

  /* Los elementos con .reveal se muestran directamente */
  .reveal {
    opacity: 1;
    transform: none;
  }

  /* El scroll indicator no rebota */
  .scroll-dot {
    animation: none;
  }
}

/*
 * will-change: se aplica solo en hover/focus, nunca de forma global.
 * Aplicarlo globalmente consume memoria GPU innecesaria.
 */
.btn:hover,
.btn:focus-visible {
  will-change: transform;
}

.service-card:hover {
  will-change: transform, box-shadow;
}

.gallery-item:hover img,
.gallery-item:hover video {
  will-change: transform;
}

/*
 * Gallery items: variante más suave de reveal para la galería masonry.
 * Menos desplazamiento que los elementos de sección principales.
 */
.gallery-item.reveal {
  transform: translateY(16px) scale(0.98);
  transition: opacity 0.45s var(--ease), transform 0.45s var(--ease);
}

.gallery-item.reveal.visible {
  transform: none;
}

/*
 * Contención de pintura para secciones independientes.
 * Evita que el repintado de una sección afecte a otras.
 */
.gallery,
.services,
.contact {
  contain: layout style;
}

/*
 * Navbar: GPU compositing hint para la transición de background/blur.
 */
.navbar {
  will-change: background-color, backdrop-filter;
}

.navbar.scrolled {
  will-change: auto;
  /* liberar hint cuando ya terminó la transición */
}

/*
 * Lightbox: GPU compositing para la animación de entrada.
 */
.lightbox:not([hidden]) {
  will-change: opacity, transform;
}

/*
 * Mobile: reducir carga visual en pantallas pequeñas.
 * Desactiva hover effects que no aplican a touch.
 */
@media (hover: none) {
  .gallery-item .gallery-item-overlay {
    opacity: 1;
    background: linear-gradient(to top,
        rgba(9, 9, 11, 0.75) 0%,
        rgba(9, 9, 11, 0) 45%);
  }

  .gallery-item:hover img,
  .gallery-item:hover video {
    transform: none;
    /* sin zoom en touch */
  }
}

/*
 * Lazy loading visual: mientras la imagen carga, muestra shimmer.
 */
.gallery-item img[loading="lazy"] {
  background: linear-gradient(90deg,
      var(--clr-surface) 25%,
      #27272A 50%,
      var(--clr-surface) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
}

.gallery-item img[loading="lazy"].loaded,
.gallery-item img:not([loading="lazy"]) {
  animation: none;
  background: none;
}

@keyframes shimmer {
  0% {
    background-position: 200% 0;
  }

  100% {
    background-position: -200% 0;
  }
}

/* ── Email en footer ──────────────────────────────────────── */
.footer-email {
  display: block;
  color: var(--clr-text-muted);
  font-size: 0.875rem;
  margin-top: 0.5rem;
  text-decoration: none;
  transition: color 0.2s;
}

.footer-email:hover {
  color: var(--clr-accent);
}

/* ── Email en sección contacto ────────────────────────────── */
.contact-email-wrap {
  margin-top: 1.25rem;
}

.contact-email-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--clr-text-muted);
  font-size: 0.95rem;
  text-decoration: none;
  padding: 0.6rem 1rem;
  border: 1px solid var(--clr-border);
  border-radius: 0.5rem;
  background: var(--clr-surface);
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.contact-email-link:hover {
  color: var(--clr-accent);
  border-color: var(--clr-accent);
  background: var(--clr-accent-dim);
}

html.light-mode .contact-email-link {
  background: #fff;
  border-color: rgba(0, 0, 0, 0.10);
  color: #57534E;
}

html.light-mode .contact-email-link:hover {
  color: var(--clr-accent);
  border-color: var(--clr-accent);
}


/* ================================================================
   THEME TOGGLE BUTTON (Sol / Luna en el navbar)
   ================================================================ */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border: 1.5px solid var(--clr-border);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  color: var(--clr-text);
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, transform 0.2s;
  flex-shrink: 0;
  order: 2;
  /* after hamburger */
}

.theme-toggle:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--clr-accent);
  transform: rotate(15deg);
}

.theme-toggle svg {
  width: 18px;
  height: 18px;
  transition: opacity 0.2s, transform 0.3s;
}

/* Dark mode (default): show sun, hide moon */
.theme-toggle .icon-sun {
  display: block;
}

.theme-toggle .icon-moon {
  display: none;
}

/* Light mode: show moon, hide sun */
html.light-mode .theme-toggle .icon-sun {
  display: none;
}

html.light-mode .theme-toggle .icon-moon {
  display: block;
}

/* ================================================================
   MODO CLARO – Light Mode
   Activa con: <html class="light-mode">
   ================================================================ */
html.light-mode {
  /* ── Fondos y superficies ─────────────────────────────────── */
  --clr-bg: #F8F7F4;
  /* Crema cálida principal           */
  --clr-bg-2: #F0EEE9;
  /* Fondo secundario ligeramente más oscuro */
  --clr-bg-3: #E8E5DE;
  /* Superficies de sección           */
  --clr-surface: #FFFFFF;
  /* Cards, formularios, modales      */
  --clr-border: rgba(0, 0, 0, 0.10);

  /* ── Textos ───────────────────────────────────────────────── */
  --clr-text: #1C1917;
  /* Casi negro cálido                */
  --clr-text-muted: #57534E;
  /* Texto secundario                 */
  --clr-text-faint: #A8A29E;
  /* Placeholder / deshabilidado      */
}

/* Transición suave al cambiar de modo */
html.light-mode body,
html.light-mode *,
html.light-mode *::before,
html.light-mode *::after {
  transition: background-color 0.3s ease, color 0.3s ease,
    border-color 0.3s ease, box-shadow 0.3s ease !important;
}

/* ── Navbar en modo claro ──────────────────────────────────── */
html.light-mode .navbar {
  background: rgba(248, 247, 244, 0.95);
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

html.light-mode .navbar.scrolled {
  background: rgba(248, 247, 244, 0.98);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.10);
}

html.light-mode .nav-link {
  color: #1C1917;
}

html.light-mode .nav-link:hover {
  color: var(--clr-accent);
}

html.light-mode .hamburger span {
  background: #1C1917;
}

/* ── Hero en modo claro ────────────────────────────────────── */
/* El hero mantiene la foto/video de fondo — overlay controlado
   siempre por el slider del admin (cms-loader.js inline style).
   Solo ajustamos el color del badge superior. */
html.light-mode .hero-eyebrow {
  color: var(--clr-accent);
}

/* Nota: NO se sobrescribe .hero-overlay aquí para que el slider
   del panel admin funcione correctamente en ambos modos. */

/* ── Secciones / fondos en modo claro ─────────────────────── */
html.light-mode body {
  background: var(--clr-bg);
}

html.light-mode .gallery {
  background: var(--clr-bg-2);
}

html.light-mode .services {
  background: var(--clr-bg);
}

html.light-mode .contact {
  background: var(--clr-bg-3);
}

html.light-mode .footer {
  background: #1C1917;
}

/* footer siempre oscuro */

/* ── Gallery en modo claro ─────────────────────────────────── */
html.light-mode .gallery-item {
  background: #E0DDD6;
  border: 1px solid rgba(0, 0, 0, 0.06);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

html.light-mode .gallery-item:hover {
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.15);
}

html.light-mode .section-title {
  color: #1C1917;
}

html.light-mode .section-desc {
  color: #57534E;
}

html.light-mode .section-eyebrow {
  color: var(--clr-accent);
}

/* ── Filtros de galería en modo claro ─────────────────────── */
html.light-mode .filter-btn {
  background: var(--clr-surface);
  color: #57534E;
  border: 1px solid rgba(0, 0, 0, 0.10);
}

html.light-mode .filter-btn:hover,
html.light-mode .filter-btn.active {
  background: var(--clr-accent);
  color: #000;
  border-color: var(--clr-accent);
}

/* ── Tarjetas de servicios en modo claro ───────────────────── */
html.light-mode .service-card {
  background: var(--clr-surface);
  border: 1px solid rgba(0, 0, 0, 0.07);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
}

html.light-mode .service-card--featured {
  border-color: var(--clr-accent);
  box-shadow: 0 8px 32px rgba(245, 158, 11, 0.15);
}

html.light-mode .service-title {
  color: #1C1917;
}

html.light-mode .service-category {
  color: var(--clr-accent);
}

html.light-mode .service-desc {
  color: #57534E;
}

html.light-mode .service-features li {
  color: #3D3936;
}

html.light-mode .service-features li::before {
  color: var(--clr-accent);
}

/* ── Contacto en modo claro ────────────────────────────────── */
html.light-mode .contact-form-wrap {
  background: var(--clr-surface);
  border: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
}

html.light-mode .contact-form input,
html.light-mode .contact-form textarea,
html.light-mode .contact-form select {
  background: #F8F7F4;
  color: #1C1917;
  border-color: rgba(0, 0, 0, 0.15);
}

html.light-mode .contact-form input:focus,
html.light-mode .contact-form textarea:focus {
  border-color: var(--clr-accent);
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.20);
}

html.light-mode .form-title {
  color: #1C1917;
}

html.light-mode .form-subtitle {
  color: #57534E;
}

html.light-mode label {
  color: #3D3936;
}

html.light-mode .contact-intro {
  color: #57534E;
}

html.light-mode .contact-info .section-title {
  color: #1C1917;
}

/* ── Lightbox en modo claro ────────────────────────────────── */
html.light-mode .lightbox {
  background: rgba(240, 238, 233, 0.97);
}

html.light-mode .lightbox-caption {
  color: #3D3936;
}

html.light-mode .lightbox-close,
html.light-mode .lightbox-nav {
  color: #1C1917;
}

/* ── Toggle en modo claro ──────────────────────────────────── */
html.light-mode .theme-toggle {
  background: rgba(0, 0, 0, 0.06);
  border-color: rgba(0, 0, 0, 0.12);
  color: #1C1917;
}

html.light-mode .theme-toggle:hover {
  background: rgba(0, 0, 0, 0.10);
  border-color: var(--clr-accent);
}

/* ── Logo en modo claro ────────────────────────────────────── */
html.light-mode .logo-brand {
  color: #1C1917;
}

html.light-mode .logo-tagline {
  color: var(--clr-accent);
}

/* ── Menú móvil en modo claro ──────────────────────────────── */
@media (max-width: 768px) {
  html.light-mode .nav-menu {
    background: rgba(248, 247, 244, 0.98);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.10);
  }
}