/* ==========================================================================
   GRUPO MERCLA S.A. DE C.V. — Hoja de estilos compartida
   ========================================================================== */

:root {
  --color-primary: #E8590C;
  --color-primary-dark: #C44803;
  --color-primary-light: #FF7A29;
  --color-primary-tint: #FFF1E8;

  --color-gray-900: #212529;
  --color-gray-800: #343a40;
  --color-gray-700: #495057;
  --color-gray-600: #6c757d;
  --color-gray-400: #adb5bd;
  --color-gray-200: #e9ecef;
  --color-gray-100: #f4f5f6;
  --color-white: #ffffff;

  --font-heading: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-body: 'Segoe UI', system-ui, -apple-system, sans-serif;

  --shadow-sm: 0 2px 8px rgba(33, 37, 41, 0.08);
  --shadow-md: 0 8px 24px rgba(33, 37, 41, 0.12);
  --shadow-lg: 0 16px 48px rgba(33, 37, 41, 0.18);

  --radius: 10px;
  --header-height: 84px;
  --transition: 0.25s ease;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--color-gray-800);
  background: var(--color-white);
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 80px 0;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-gray-900);
  line-height: 1.25;
}

h1 { font-size: clamp(2rem, 4vw, 3.2rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); }
h3 { font-size: 1.3rem; }

.eyebrow {
  display: inline-block;
  color: var(--color-primary);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.8rem;
  margin-bottom: 12px;
}

.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 48px;
}

.section-head p {
  color: var(--color-gray-600);
  margin-top: 12px;
  font-size: 1.05rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 30px;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 0.95rem;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: transparent;
  color: var(--color-white);
  border: 2px solid rgba(255,255,255,0.7);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.15);
  transform: translateY(-2px);
}

.btn-outline-dark {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn-outline-dark:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

/* ==========================================================================
   Reveal on scroll
   ========================================================================== */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   Header / Nav
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 500;
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
  height: var(--header-height);
}

.nav-wrap {
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--color-gray-900);
  white-space: nowrap;
}

.brand .brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 800;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.brand-logo {
  height: 60px;
  width: auto;
  display: block;
  flex-shrink: 0;
}

.footer-logo-wrap {
  display: inline-block;
  background: var(--color-white);
  padding: 14px 24px;
  border-radius: 12px;
  line-height: 0;
}

.footer-logo-wrap .brand-logo {
  height: 90px;
}

.brand small {
  display: block;
  font-weight: 500;
  font-size: 0.65rem;
  color: var(--color-gray-600);
  letter-spacing: 0.05em;
}

.main-nav {
  display: flex;
  align-items: center;
  height: 100%;
}

.main-nav > ul {
  display: flex;
  align-items: center;
  height: 100%;
}

.nav-item {
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
}

.nav-item:not(:last-child)::after {
  content: '';
  width: 1px;
  height: 26px;
  background: var(--color-gray-200);
  margin: 0 4px;
}

.nav-link {
  padding: 10px 18px;
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--color-gray-800);
  border-radius: 6px;
  transition: color var(--transition), background var(--transition);
  white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
  background: var(--color-primary-tint);
}

.mega-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  width: 420px;
  background: var(--color-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 16px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
  z-index: 400;
}

.nav-item:hover .mega-menu,
.nav-item:focus-within .mega-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.mega-menu-item {
  display: flex;
  gap: 14px;
  padding: 10px;
  border-radius: 8px;
  transition: background var(--transition);
}

.mega-menu-item:hover {
  background: var(--color-gray-100);
}

.mega-menu-item img {
  width: 64px;
  height: 64px;
  border-radius: 8px;
  object-fit: cover;
  flex-shrink: 0;
}

.mega-menu-item h4 {
  font-size: 0.95rem;
  margin-bottom: 4px;
  color: var(--color-gray-900);
}

.mega-menu-item p {
  font-size: 0.82rem;
  color: var(--color-gray-600);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}

.nav-cta .btn-primary {
  padding: 10px 22px;
  font-size: 0.9rem;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  z-index: 600;
}

.hamburger span {
  width: 26px;
  height: 3px;
  background: var(--color-gray-900);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.hamburger.is-open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.hamburger.is-open span:nth-child(2) { opacity: 0; }
.hamburger.is-open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  background: var(--color-gray-900);
  color: var(--color-gray-400);
  padding: 64px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-grid h4 {
  color: var(--color-white);
  font-size: 1rem;
  margin-bottom: 18px;
}

.footer-brand p {
  margin-top: 14px;
  font-size: 0.9rem;
  max-width: 320px;
}

.footer-grid ul li {
  margin-bottom: 10px;
}

.footer-grid ul li a:hover {
  color: var(--color-primary-light);
}

.footer-social {
  display: flex;
  gap: 10px;
  margin-top: 18px;
}

.footer-social a {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), border-color var(--transition);
  font-size: 0.9rem;
}

.footer-social a:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

.footer-bottom {
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.82rem;
}

/* ==========================================================================
   Hero / Carousel (Inicio)
   ========================================================================== */

.hero {
  position: relative;
  height: 90vh;
  min-height: 560px;
  overflow: hidden;
  color: var(--color-white);
}

.hero-slides {
  position: absolute;
  inset: 0;
}

.hero-slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 1.2s ease;
}

.hero-slide.is-active {
  opacity: 1;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(33,37,41,0.55) 0%, rgba(33,37,41,0.75) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: 720px;
}

.hero-content .eyebrow {
  color: var(--color-primary-light);
}

.hero-content h1 {
  color: var(--color-white);
  margin-bottom: 20px;
}

.hero-content p {
  font-size: 1.15rem;
  color: var(--color-gray-200);
  margin-bottom: 32px;
  max-width: 560px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-dots {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  gap: 10px;
}

.hero-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,0.4);
  transition: background var(--transition), transform var(--transition);
}

.hero-dot.is-active {
  background: var(--color-primary);
  transform: scale(1.3);
}

/* ==========================================================================
   Cards
   ========================================================================== */

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
}

.card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.card-icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  background: var(--color-primary-tint);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 18px;
  font-weight: 800;
}

.card h3 {
  margin-bottom: 10px;
}

.card p {
  color: var(--color-gray-600);
  font-size: 0.95rem;
}

.bg-tint {
  background: var(--color-gray-100);
}

/* ==========================================================================
   Mission / CTA band
   ========================================================================== */

.band {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: var(--color-white);
  text-align: center;
}

.band h2 { color: var(--color-white); }

.band p {
  max-width: 640px;
  margin: 16px auto 0;
  color: rgba(255,255,255,0.9);
  font-size: 1.05rem;
}

.cta-final {
  text-align: center;
  padding: 90px 0;
}

.cta-final .btn { margin-top: 28px; }

/* ==========================================================================
   Servicios
   ========================================================================== */

.service-group {
  margin-bottom: 56px;
}

.service-group-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 24px;
  border-bottom: 2px solid var(--color-primary-tint);
  padding-bottom: 14px;
}

.service-group-head h2 {
  font-size: 1.5rem;
}

.service-group-head span {
  color: var(--color-gray-600);
  font-size: 0.9rem;
}

.service-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.service-item {
  position: relative;
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  padding: 22px 24px;
  cursor: pointer;
  transition: box-shadow var(--transition), border-color var(--transition);
}

.service-item:hover,
.service-item.is-open {
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}

.service-item-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.service-item-head h3 {
  font-size: 1.05rem;
}

.service-item-head .chev {
  color: var(--color-primary);
  transition: transform var(--transition);
  flex-shrink: 0;
}

.service-item.is-open .chev {
  transform: rotate(180deg);
}

.service-detail {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition), margin-top var(--transition);
}

.service-item.is-open .service-detail {
  max-height: 400px;
  margin-top: 14px;
}

.service-detail p {
  color: var(--color-gray-600);
  font-size: 0.9rem;
}

.service-detail ul {
  margin-top: 8px;
}

.service-detail li {
  font-size: 0.88rem;
  color: var(--color-gray-700);
  padding-left: 20px;
  position: relative;
  margin-bottom: 6px;
}

.service-detail li::before {
  content: '\2713';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 700;
}

/* ==========================================================================
   Trabajo / Galería
   ========================================================================== */

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
}

.gallery-card {
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  transition: transform var(--transition), box-shadow var(--transition);
}

.gallery-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.gallery-card .img-wrap {
  height: 220px;
  overflow: hidden;
}

.gallery-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.gallery-card:hover img {
  transform: scale(1.06);
}

.gallery-card-body {
  padding: 20px 22px;
}

.gallery-tag {
  display: inline-block;
  background: var(--color-primary-tint);
  color: var(--color-primary-dark);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 20px;
  margin-bottom: 10px;
}

.gallery-card-body h3 {
  margin-bottom: 8px;
}

.gallery-card-body p {
  color: var(--color-gray-600);
  font-size: 0.9rem;
}

/* ==========================================================================
   Nosotros: zoom gallery + modal
   ========================================================================== */

.zoom-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.zoom-item {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 1 / 1;
  cursor: pointer;
}

.zoom-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.zoom-item:hover img {
  transform: scale(1.08);
}

.zoom-overlay {
  position: absolute;
  inset: 0;
  background: rgba(33,37,41,0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition);
}

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

.zoom-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-white);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
}

.zoom-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 14px 16px 10px;
  background: linear-gradient(0deg, rgba(0,0,0,0.65), transparent);
  color: white;
  font-size: 0.85rem;
  font-weight: 600;
}

.img-modal {
  position: fixed;
  inset: 0;
  background: rgba(20,20,20,0.92);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 32px;
}

.img-modal.is-open {
  display: flex;
}

.img-modal-content {
  max-width: 900px;
  max-height: 85vh;
  position: relative;
}

.img-modal-content img {
  max-width: 100%;
  max-height: 85vh;
  border-radius: 8px;
  object-fit: contain;
}

.img-modal-caption {
  color: white;
  text-align: center;
  margin-top: 14px;
  font-size: 0.95rem;
}

.img-modal-close {
  position: absolute;
  top: -46px;
  right: 0;
  color: white;
  font-size: 2rem;
  line-height: 1;
}

/* ==========================================================================
   Historia / Misión / Visión (Nosotros)
   ========================================================================== */

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.split img {
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
}

.mv-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  margin-top: 40px;
}

.mv-card {
  background: var(--color-gray-100);
  border-radius: var(--radius);
  padding: 30px;
  border-left: 4px solid var(--color-primary);
}

.mv-card h3 {
  color: var(--color-primary-dark);
  margin-bottom: 12px;
}

.mv-card p {
  color: var(--color-gray-700);
  font-size: 0.95rem;
}

.strengths-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 32px;
}

.strength-chip {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: 8px;
  padding: 14px 18px;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-gray-800);
}

.strength-chip .check {
  color: var(--color-primary);
  font-size: 1.1rem;
}

/* ==========================================================================
   Ubicaciones
   ========================================================================== */

.location-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.map-frame {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-gray-200);
}

.map-frame iframe {
  width: 100%;
  height: 420px;
  border: 0;
  display: block;
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-info-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.contact-info-item .icon {
  width: 46px;
  height: 46px;
  border-radius: 10px;
  background: var(--color-primary-tint);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.contact-info-item h4 {
  margin-bottom: 4px;
  font-size: 1rem;
}

.contact-info-item p {
  color: var(--color-gray-600);
  font-size: 0.9rem;
}

.coverage-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.coverage-badge {
  background: var(--color-gray-100);
  border-radius: 20px;
  padding: 8px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-gray-700);
}

/* ==========================================================================
   Contacto: formulario
   ========================================================================== */

.contact-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
}

.form-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  padding: 40px;
  box-shadow: var(--shadow-sm);
}

.form-row {
  margin-bottom: 20px;
}

.form-row label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 8px;
  color: var(--color-gray-800);
}

.form-row input,
.form-row textarea {
  width: 100%;
  padding: 13px 16px;
  border: 1px solid var(--color-gray-200);
  border-radius: 8px;
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-row input:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-tint);
}

.form-row textarea {
  resize: vertical;
  min-height: 130px;
}

/* honeypot field — hidden from real users, visible to bots that fill everything */
.hp-field {
  position: absolute;
  left: -9999px;
  top: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-status {
  margin-top: 16px;
  font-size: 0.9rem;
  font-weight: 600;
  min-height: 20px;
}

.form-status.success { color: #1e7e34; }
.form-status.error { color: #c0392b; }

.social-links-block {
  margin-top: 32px;
  display: flex;
  gap: 12px;
}

.social-links-block a {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gray-700);
  transition: background var(--transition), color var(--transition);
}

.social-links-block a:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 980px) {
  .split, .location-wrap, .contact-wrap {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 860px) {
  .main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-white);
    flex-direction: column;
    align-items: stretch;
    padding: 20px 24px;
    transform: translateX(100%);
    transition: transform var(--transition);
    overflow-y: auto;
    height: calc(100vh - var(--header-height));
  }

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

  .main-nav > ul {
    flex-direction: column;
    align-items: stretch;
    height: auto;
  }

  .nav-item {
    height: auto;
    flex-direction: column;
    align-items: stretch;
    border-bottom: 1px solid var(--color-gray-200);
  }

  .nav-item:not(:last-child)::after {
    display: none;
  }

  .nav-link {
    padding: 16px 8px;
  }

  .mega-menu {
    position: static;
    width: 100%;
    box-shadow: none;
    transform: none;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    max-height: 0;
    padding: 0;
    overflow: hidden;
    transition: max-height var(--transition), padding var(--transition);
  }

  .nav-item.is-expanded .mega-menu {
    max-height: 600px;
    padding: 10px 0 16px;
  }

  .nav-cta {
    display: none;
  }

  .hamburger {
    display: flex;
  }
}

@media (max-width: 640px) {
  section { padding: 56px 0; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero { min-height: 500px; }
}