/* ==========================================================================
   PIA PUERTAS AUTOMÁTICAS - SISTEMA DE DISEÑO Y ESTILOS PRINCIPALES
   Colores Institucionales:
   - Azul Teal Primario: #005767 / #0b5b6b / #005ea2
   - Rojo Tinto Acento: #892d30 / #903d41 / #964449
   - Neutros: #ffffff, #f5f6f7, #eff2f5, #1d1c1a
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
  /* Paleta Institucional PIA */
  --primary: #005767;
  --primary-dark: #003e4a;
  --primary-light: #0b5b6b;
  --primary-subtle: #e6f3f5;
  --accent: #892d30;
  --accent-hover: #a13538;
  --accent-light: #fdf2f2;
  --gold: #d99a26;

  /* Neutros & Superficies */
  --bg-main: #f8fafc;
  --bg-surface: #ffffff;
  --bg-dark: #0f172a;
  --bg-dark-card: #1e293b;
  --text-main: #1e293b;
  --text-muted: #64748b;
  --text-light: #f8fafc;
  --border-light: #e2e8f0;
  --border-dark: #334155;

  /* Tipografía */
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Sombras y Elevaciones */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 10px 25px -5px rgba(0, 87, 103, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 20px 35px -10px rgba(0, 87, 103, 0.15), 0 10px 15px -5px rgba(0, 0, 0, 0.08);
  --shadow-glow: 0 0 25px rgba(137, 45, 48, 0.35);

  /* Bordes & Transiciones */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-fast);
}

ul {
  list-style: none;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* Tipografía */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--primary-dark);
  font-weight: 700;
  line-height: 1.2;
}

/* Scrollbar Personalizado */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: #e2e8f0;
}
::-webkit-scrollbar-thumb {
  background: var(--primary);
  border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--primary-dark);
}

/* Contenedor Universal */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ==========================================================================
   BARRA SUPERIOR (TOP BAR)
   ========================================================================== */
.top-bar {
  background: linear-gradient(90deg, var(--primary-dark) 0%, var(--primary) 100%);
  color: var(--text-light);
  font-size: 0.875rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.top-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.top-bar-info {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.top-bar-item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 400;
}

.top-bar-item svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
  color: var(--gold);
}

.top-bar-item a:hover {
  color: var(--gold);
}

.top-bar-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.badge-emergency {
  background-color: var(--accent);
  color: #fff;
  padding: 0.2rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  animation: pulse-red 2s infinite;
}

@keyframes pulse-red {
  0% { box-shadow: 0 0 0 0 rgba(137, 45, 48, 0.6); }
  70% { box-shadow: 0 0 0 10px rgba(137, 45, 48, 0); }
  100% { box-shadow: 0 0 0 0 rgba(137, 45, 48, 0); }
}

/* ==========================================================================
   HEADER PRINCIPAL & NAVEGACIÓN STICKY
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
  background: rgba(255, 255, 255, 0.98);
}

.header-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 90px;
}

.logo-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-brand img {
  height: 62px;
  width: auto;
  object-fit: contain;

}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--primary-dark);
  position: relative;
  padding: 0.5rem 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
  transition: var(--transition-normal);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-link:hover {
  color: var(--accent);
}

.btn-header-cta {
  background: var(--accent);
  color: #ffffff;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: var(--shadow-sm);
  border: none;
  cursor: pointer;
}

.btn-header-cta:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.mobile-nav-toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  color: var(--primary-dark);
}

.mobile-nav-toggle svg {
  width: 28px;
  height: 28px;
}

/* ==========================================================================
   HERO CAROUSEL / SLIDER
   ========================================================================== */
.hero-slider-section {
  position: relative;
  background-color: var(--bg-dark);
  overflow: hidden;
  color: #ffffff;
}

.hero-slider-container {
  position: relative;
  min-height: 620px;
  display: flex;
  align-items: center;
}

.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.8s ease-in-out, transform 0.8s ease-in-out;
  transform: scale(1.03);
}

.hero-slide.active {
  opacity: 1;
  visibility: visible;
  transform: scale(1);
}

.hero-slide-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}

.hero-slide-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(0, 31, 40, 0.92) 0%, rgba(0, 62, 74, 0.82) 50%, rgba(0, 0, 0, 0.4) 100%);
}

.hero-content-wrapper {
  position: relative;
  z-index: 10;
  padding: 5rem 0 7rem;
  max-width: 750px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(137, 45, 48, 0.85);
  backdrop-filter: blur(8px);
  color: #ffffff;
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 1.5rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.hero-title {
  font-size: clamp(2.2rem, 4vw, 3.6rem);
  color: #ffffff;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1.25rem;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.hero-title span {
  color: #6ee7b7;
  background: linear-gradient(135deg, #ffffff 0%, #cbd5e1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  font-size: 1.15rem;
  color: #cbd5e1;
  margin-bottom: 2rem;
  line-height: 1.6;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.btn-primary {
  background: var(--accent);
  color: #ffffff;
  padding: 1rem 2rem;
  border-radius: var(--radius-md);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  box-shadow: var(--shadow-md);
  border: none;
  cursor: pointer;
  transition: var(--transition-normal);
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(8px);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.3);
  padding: 1rem 2rem;
  border-radius: var(--radius-md);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  transition: var(--transition-normal);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: translateY(-3px);
  border-color: #ffffff;
}

/* Controles de Slider */
.slider-controls {
  position: absolute;
  bottom: 2rem;
  right: 2rem;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.slider-btn {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-fast);
}

.slider-btn:hover {
  background: var(--accent);
  border-color: var(--accent);
}

.slider-btn svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.slider-dots {
  display: flex;
  gap: 0.5rem;
}

.slider-dot {
  width: 12px;
  height: 12px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.3);
  cursor: pointer;
  transition: var(--transition-normal);
}

.slider-dot.active {
  width: 32px;
  background: var(--accent);
}

/* ==========================================================================
   FEATURE CARDS OVERLAY (TARJETAS SOBREPUESTAS)
   ========================================================================== */
.hero-features-bar {
  margin-top: -4rem;
  position: relative;
  z-index: 30;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.feature-card {
  background: var(--bg-surface);
  padding: 2rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-light);
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: var(--primary-subtle);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-icon svg {
  width: 28px;
  height: 28px;
  fill: currentColor;
}

.feature-card h3 {
  font-size: 1.25rem;
  color: var(--primary-dark);
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.5;
}

/* ==========================================================================
   SECCIÓN QUIÉNES SOMOS ("CALIDAD Y CONFIANZA")
   ========================================================================== */
.section-padding {
  padding: 5rem 0;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-image-wrapper {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.about-image-wrapper img {
  width: 100%;
  height: 480px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  transition: transform 0.5s ease;
}

.about-image-wrapper:hover img {
  transform: scale(1.03);
}

.badge-experience {
  position: absolute;
  bottom: 2rem;
  right: 2rem;
  background: var(--primary-dark);
  color: #ffffff;
  padding: 1.5rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border-left: 5px solid var(--accent);
  display: flex;
  align-items: center;
  gap: 1rem;
}

.badge-experience .num {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 800;
  color: #ffffff;
  line-height: 1;
}

.badge-experience .txt {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  line-height: 1.3;
}

.section-tag {
  display: inline-block;
  color: var(--accent);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(2rem, 3vw, 2.75rem);
  color: var(--primary-dark);
  margin-bottom: 1.25rem;
}

.section-desc {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 2rem;
}

.about-checklist {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.about-check-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-weight: 600;
  color: var(--primary-dark);
}

.about-check-item svg {
  width: 22px;
  height: 22px;
  fill: var(--accent);
  flex-shrink: 0;
  margin-top: 2px;
}

/* ==========================================================================
   CATÁLOGO DE PRODUCTOS Y SERVICIOS
   ========================================================================== */
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 3rem;
}

.catalog-tabs {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.tab-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  color: var(--text-muted);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-full);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition-fast);
}

.tab-btn:hover,
.tab-btn.active {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
}

.product-card {
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-light);
}

.product-thumb {
  position: relative;
  height: 220px;
  overflow: hidden;
  background: #cbd5e1;
}

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

.product-card:hover .product-thumb img {
  transform: scale(1.08);
}

.product-badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: var(--primary-dark);
  color: #ffffff;
  padding: 0.3rem 0.8rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
}

.product-body {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.product-title {
  font-size: 1.25rem;
  color: var(--primary-dark);
  margin-bottom: 0.75rem;
}

.product-desc {
  color: var(--text-muted);
  font-size: 0.925rem;
  line-height: 1.5;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.product-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-light);
  padding-top: 1rem;
}

.btn-spec {
  color: var(--primary);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: none;
  border: none;
  cursor: pointer;
}

.btn-spec:hover {
  color: var(--accent);
}

/* ==========================================================================
   MODAL DE FICHA TÉCNICA DE PRODUCTO
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(6px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-normal);
}

.modal-backdrop.active {
  opacity: 1;
  visibility: visible;
}

.modal-container {
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  max-width: 750px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  position: relative;
  transform: translateY(20px);
  transition: var(--transition-normal);
}

.modal-backdrop.active .modal-container {
  transform: translateY(0);
}

.modal-header {
  padding: 1.75rem 2rem;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--primary-subtle);
}

.modal-header h3 {
  font-size: 1.5rem;
  color: var(--primary-dark);
}

.btn-close-modal {
  background: transparent;
  border: none;
  font-size: 1.75rem;
  line-height: 1;
  color: var(--text-muted);
  cursor: pointer;
}

.btn-close-modal:hover {
  color: var(--accent);
}

.modal-body {
  padding: 2rem;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
}

.spec-table th, .spec-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-light);
  text-align: left;
  font-size: 0.95rem;
}

.spec-table th {
  background: var(--bg-main);
  color: var(--primary-dark);
  font-weight: 700;
  width: 40%;
}

/* ==========================================================================
   COTIZADOR INTERACTIVO WIZARD POR PASOS
   ========================================================================== */
.quote-section {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
  color: #ffffff;
  position: relative;
}

.quote-card {
  background: var(--bg-surface);
  color: var(--text-main);
  border-radius: var(--radius-lg);
  padding: 3rem;
  box-shadow: var(--shadow-lg);
  max-width: 850px;
  margin: 0 auto;
}

.wizard-steps {
  display: flex;
  justify-content: space-between;
  margin-bottom: 2.5rem;
  position: relative;
}

.wizard-steps::before {
  content: '';
  position: absolute;
  top: 20px;
  left: 10%;
  right: 10%;
  height: 3px;
  background: var(--border-light);
  z-index: 1;
}

.wizard-step-item {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.step-number {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-full);
  background: var(--border-light);
  color: var(--text-muted);
  font-family: var(--font-heading);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-normal);
}

.wizard-step-item.active .step-number {
  background: var(--accent);
  color: #ffffff;
  box-shadow: var(--shadow-glow);
}

.wizard-step-item.completed .step-number {
  background: var(--primary);
  color: #ffffff;
}

.step-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.wizard-step-item.active .step-label {
  color: var(--primary-dark);
}

.wizard-panel {
  display: none;
}

.wizard-panel.active {
  display: block;
  animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.option-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.selectable-card {
  border: 2px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: var(--transition-normal);
}

.selectable-card:hover,
.selectable-card.selected {
  border-color: var(--accent);
  background: var(--accent-light);
  transform: translateY(-4px);
}

.selectable-card svg {
  width: 40px;
  height: 40px;
  fill: var(--primary);
  margin-bottom: 0.75rem;
}

.selectable-card.selected svg {
  fill: var(--accent);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--primary-dark);
}

.form-control {
  width: 100%;
  padding: 0.85rem 1rem;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  outline: none;
  transition: var(--transition-fast);
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0, 87, 103, 0.15);
}

.wizard-buttons {
  display: flex;
  justify-content: space-between;
  margin-top: 2rem;
}

/* ==========================================================================
   POR QUÉ ELEGIRNOS
   ========================================================================== */
.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.why-card {
  background: var(--bg-surface);
  padding: 2.5rem 2rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  text-align: center;
  transition: var(--transition-normal);
}

.why-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}

.why-icon {
  width: 70px;
  height: 70px;
  border-radius: var(--radius-full);
  background: var(--primary-subtle);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
}

.why-icon svg {
  width: 36px;
  height: 36px;
  fill: currentColor;
}

/* ==========================================================================
   GALERÍA DE PROYECTOS & OPTIMIZACIÓN RENDIMIENTO (PAGESPEED & CORE WEB VITALS)
   ========================================================================== */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
  content-visibility: auto;
  contain-intrinsic-size: 1px 800px;
}

.gallery-item {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  height: 250px;
  aspect-ratio: 16 / 10;
  cursor: pointer;
}

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

.gallery-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(0, 62, 74, 0.9) 0%, rgba(0, 0, 0, 0.2) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 1.5rem;
  color: #ffffff;
  opacity: 0;
  transition: var(--transition-normal);
}

.gallery-item:hover img {
  transform: scale(1.1);
}

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

/* ==========================================================================
   PREGUNTAS FRECUENTES (FAQ ACCORDION)
   ========================================================================== */
.faq-container {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: var(--bg-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.faq-question {
  padding: 1.25rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--primary-dark);
  cursor: pointer;
  user-select: none;
}

.faq-question svg {
  width: 20px;
  height: 20px;
  fill: var(--primary);
  transition: transform 0.3s ease;
}

.faq-item.open .faq-question svg {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out, padding 0.3s ease;
  padding: 0 1.5rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 1.5rem 1.5rem 1.5rem;
}

/* ==========================================================================
   PIE DE PÁGINA (FOOTER)
   ========================================================================== */
.site-footer {
  background: var(--bg-dark);
  color: #94a3b8;
  padding: 5rem 0 2rem;
  border-top: 4px solid var(--accent);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  margin-bottom: 4rem;
}

.footer-brand img {
  height: 60px;
  margin-bottom: 1.25rem;
}

.footer-brand p {
  font-size: 0.95rem;
  line-height: 1.6;
}

.footer-title {
  color: #ffffff;
  font-size: 1.15rem;
  margin-bottom: 1.5rem;
  position: relative;
}

.footer-title::after {
  content: '';
  display: block;
  width: 35px;
  height: 3px;
  background: var(--accent);
  margin-top: 0.5rem;
  border-radius: 2px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a:hover {
  color: #ffffff;
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid var(--border-dark);
  padding-top: 2rem;
  text-align: center;
  font-size: 0.875rem;
}

/* ==========================================================================
   WIDGET FLOTANTE DE WHATSAPP
   ========================================================================== */
.whatsapp-widget {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 1000;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: #25d366;
  color: #ffffff;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-full);
  box-shadow: 0 10px 25px rgba(37, 211, 102, 0.4);
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  animation: pulse-green 2.5s infinite;
}

.whatsapp-widget:hover {
  transform: scale(1.05);
  background: #20ba5a;
}

.whatsapp-widget svg {
  width: 28px;
  height: 28px;
  fill: currentColor;
}

@keyframes pulse-green {
  0% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7); }
  70% { box-shadow: 0 0 0 15px rgba(37, 211, 102, 0); }
  100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}

/* RESPONSIVE DESIGN */
@media (max-width: 992px) {
  .about-grid, .footer-grid {
    grid-template-columns: 1fr;
  }

  .nav-menu {
    position: fixed;
    top: 90px;
    left: 0;
    right: 0;
    background: #ffffff;
    flex-direction: column;
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    transform: translateY(-150%);
    transition: var(--transition-normal);
  }

  .nav-menu.active {
    transform: translateY(0);
  }

  .mobile-nav-toggle {
    display: block;
  }

  .option-cards-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .top-bar-info {
    justify-content: center;
  }
  
  .hero-cta-group {
    flex-direction: column;
    width: 100%;
  }

  .btn-primary, .btn-secondary {
    width: 100%;
    justify-content: center;
  }
}