/* ============================================
   INSTALART ELECTRIFICACIONES Y PROYECTOS
   Hoja de Estilos Principal
   ============================================ */

/* === VARIABLES DE COLORES CORPORATIVOS === */
:root {
  /* Colores principales del branding */
  --color-primary: #FF8C00;        /* Naranja corporativo */
  --color-primary-dark: #E67E00;   /* Naranja oscuro */
  --color-primary-light: #FFA500;  /* Naranja claro */
  
  /* Grises corporativos */
  --color-dark: #1a1a1a;           /* Negro corporativo */
  --color-dark-blue: #0f2027;      /* Azul oscuro */
  --color-gray: #333333;           /* Gris oscuro */
  --color-gray-medium: #666666;    /* Gris medio */
  --color-gray-light: #f8f9fa;     /* Gris claro */
  
  /* Colores complementarios */
  --color-white: #ffffff;
  --color-success: #28a745;
  --color-whatsapp: #25d366;
  
  /* Sombras */
  --shadow-sm: 0 2px 8px rgba(0,0,0,.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,.1);
  --shadow-lg: 0 6px 20px rgba(0,0,0,.12);
  --shadow-xl: 0 10px 30px rgba(0,0,0,.15);
  
  /* Transiciones */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* === ESTILOS GENERALES === */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: var(--color-gray);
  scroll-behavior: smooth;
  line-height: 1.6;
}

/* === NAVBAR === */
.navbar {
  background-color: var(--color-white) !important;
  box-shadow: var(--shadow-md);
  transition: var(--transition-normal);
  padding: 1rem 0;
}

.navbar-brand {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-dark) !important;
  transition: var(--transition-fast);
}

.navbar-brand:hover {
  color: var(--color-primary) !important;
}

.nav-link {
  color: var(--color-gray) !important;
  font-weight: 500;
  padding: 0.5rem 1rem !important;
  transition: var(--transition-fast);
  position: relative;
}

.nav-link:hover {
  color: var(--color-primary) !important;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 80%;
  height: 2px;
  background-color: var(--color-primary);
  transition: transform var(--transition-fast);
}

.nav-link:hover::after {
  transform: translateX(-50%) scaleX(1);
}

/* === HERO SECTION === */
.hero {
  background: linear-gradient(135deg, rgba(26,26,26,.92) 0%, rgba(15,32,39,.95) 100%), 
              url('https://images.unsplash.com/photo-1581092580497-e0d23cbdf1dc') center/cover no-repeat;
  color: var(--color-white);
  padding: 140px 15px 100px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 30% 50%, rgba(255,140,0,0.1) 0%, transparent 60%);
  pointer-events: none;
}

.hero h1 {
  font-size: 2.8rem;
  font-weight: 800;
  text-shadow: 2px 2px 8px rgba(0,0,0,0.3);
  margin-bottom: 1.5rem;
}

.hero span {
  color: var(--color-primary);
  display: inline-block;
  animation: fadeInUp 1s ease;
}

.hero .lead {
  font-size: 1.25rem;
  font-weight: 300;
  text-shadow: 1px 1px 4px rgba(0,0,0,0.3);
}

.hero p:not(.lead) {
  font-size: 1.1rem;
  opacity: 0.9;
  letter-spacing: 2px;
}

/* === BOTONES === */
.btn-warning {
  background-color: var(--color-primary) !important;
  border-color: var(--color-primary) !important;
  color: var(--color-white) !important;
  font-weight: 600;
  padding: 0.75rem 2rem;
  border-radius: 50px;
  transition: var(--transition-normal);
  box-shadow: 0 4px 15px rgba(255,140,0,0.3);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.btn-warning:hover {
  background-color: var(--color-primary-dark) !important;
  border-color: var(--color-primary-dark) !important;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255,140,0,0.4);
}

.btn-warning:active {
  transform: translateY(0);
}

/* === SECTION TITLES === */
.section-title {
  margin-bottom: 50px;
}

.section-title h2 {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 1rem;
  position: relative;
  display: inline-block;
}

.section-title h2::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  border-radius: 2px;
}

.section-title p {
  color: var(--color-gray-medium);
  font-size: 1.1rem;
}

/* Section titles en fondos oscuros */
.bg-dark-blue .section-title h2,
#contacto .section-title h2 {
  color: var(--color-white) !important;
}

.bg-dark-blue .section-title p,
#contacto .section-title p {
  color: rgba(255,255,255,0.85) !important;
}

/* === CARDS DE SERVICIOS === */
.card-service {
  border: none;
  border-radius: 15px;
  box-shadow: var(--shadow-sm);
  height: 100%;
  transition: var(--transition-normal);
  background: var(--color-white);
  overflow: hidden;
  position: relative;
}

.card-service::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  transform: scaleX(0);
  transition: transform var(--transition-normal);
}

.card-service:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.card-service:hover::before {
  transform: scaleX(1);
}

.card-service i {
  font-size: 50px;
  color: var(--color-primary);
  transition: var(--transition-normal);
}

.card-service:hover i {
  transform: scale(1.1);
  color: var(--color-primary-dark);
}

.card-service h5 {
  color: var(--color-dark);
  font-weight: 600;
  margin-top: 1rem;
  margin-bottom: 0.75rem;
}

.card-service p {
  color: var(--color-gray-medium);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* === SECCIONES === */
section {
  padding: 80px 0;
}

.bg-light {
  background-color: var(--color-gray-light) !important;
}

.bg-dark-blue {
  background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-dark-blue) 100%);
  color: var(--color-white) !important;
}

.bg-dark-blue * {
  color: var(--color-white);
}

.bg-dark-blue h1,
.bg-dark-blue h2,
.bg-dark-blue h3,
.bg-dark-blue h4,
.bg-dark-blue h5,
.bg-dark-blue h6,
.bg-dark-blue p,
.bg-dark-blue label {
  color: var(--color-white) !important;
}

.bg-dark-blue .text-warning,
.bg-dark-blue i.text-warning {
  color: var(--color-primary) !important;
}

/* === CARDS GENERALES === */
.card {
  border: none;
  border-radius: 12px;
  transition: var(--transition-normal);
  overflow: hidden;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card img {
  transition: transform var(--transition-slow);
}

.card:hover img {
  transform: scale(1.05);
}

/* === ICONOS === */
i.bi {
  transition: var(--transition-fast);
}

.text-warning {
  color: var(--color-primary) !important;
}

/* === LISTAS === */
ul li {
  margin-bottom: 0.75rem;
  color: var(--color-gray);
}

ul li strong {
  color: var(--color-dark);
}

.list-unstyled li {
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(0,0,0,0.05);
}

.list-unstyled li:last-child {
  border-bottom: none;
}

.list-unstyled li i {
  margin-right: 10px;
}

/* === FORMULARIOS === */
.form-control {
  border-radius: 8px;
  border: 2px solid rgba(255,255,255,0.3);
  background-color: rgba(255,255,255,0.15);
  color: var(--color-white) !important;
  padding: 0.75rem 1rem;
  transition: var(--transition-fast);
}

.form-control::placeholder {
  color: rgba(255,255,255,0.7) !important;
}

.form-control:focus {
  border-color: var(--color-primary);
  background-color: rgba(255,255,255,0.2);
  color: var(--color-white) !important;
  box-shadow: 0 0 0 0.2rem rgba(255,140,0,0.25);
}

/* Formularios en secciones oscuras */
.bg-dark-blue .form-control,
#contacto .form-control {
  border-color: rgba(255,255,255,0.3);
  background-color: rgba(255,255,255,0.15);
  color: var(--color-white) !important;
}

.bg-dark-blue .form-control::placeholder,
#contacto .form-control::placeholder {
  color: rgba(255,255,255,0.7) !important;
}

/* === CONTACTO === */
#contacto h2,
#contacto h3,
#contacto h4,
#contacto h5,
#contacto p {
  color: var(--color-white) !important;
}

#contacto a {
  color: var(--color-white) !important;
  transition: var(--transition-fast);
}

#contacto a:hover {
  color: var(--color-primary) !important;
  transform: scale(1.05);
}

#contacto i {
  color: var(--color-primary) !important;
  transition: var(--transition-normal);
}

#contacto a:hover i {
  transform: scale(1.2);
  color: var(--color-primary-light) !important;
}

/* === WHATSAPP BUTTON === */
.whatsapp-btn {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: var(--color-whatsapp);
  color: var(--color-white);
  border-radius: 50px;
  padding: 14px 24px;
  font-weight: 700;
  text-decoration: none;
  box-shadow: 0 5px 20px rgba(37,211,102,.4);
  z-index: 999;
  transition: var(--transition-normal);
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1rem;
}

.whatsapp-btn:hover {
  background: #20bd5a;
  color: var(--color-white);
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 8px 25px rgba(37,211,102,.5);
}

.whatsapp-btn i {
  font-size: 1.4rem;
}

/* === FOOTER === */
footer {
  background: var(--color-dark) !important;
  color: var(--color-white) !important;
  padding: 2rem 0;
}

footer small {
  color: var(--color-white) !important;
  font-size: 0.9rem;
  opacity: 0.9;
}

footer * {
  color: var(--color-white) !important;
}

/* === ANIMACIONES === */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .hero {
    padding: 100px 15px 60px;
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  .hero .lead {
    font-size: 1.1rem;
  }
  
  .section-title h2 {
    font-size: 2rem;
  }
  
  .navbar-brand {
    font-size: 1rem;
  }
  
  .whatsapp-btn {
    padding: 12px 20px;
    font-size: 0.9rem;
  }
  
  section {
    padding: 50px 0;
  }
}

@media (max-width: 576px) {
  .hero h1 {
    font-size: 1.6rem;
  }
  
  .card-service {
    margin-bottom: 1rem;
  }
  
  .whatsapp-btn {
    bottom: 15px;
    right: 15px;
    padding: 10px 16px;
    font-size: 0.85rem;
  }
}

/* === UTILIDADES === */
.shadow-sm { box-shadow: var(--shadow-sm) !important; }
.shadow { box-shadow: var(--shadow-md) !important; }
.shadow-lg { box-shadow: var(--shadow-lg) !important; }

.text-primary-custom {
  color: var(--color-primary) !important;
}

.bg-primary-custom {
  background-color: var(--color-primary) !important;
}

/* === MEJORAS DE ACCESIBILIDAD === */
a:focus, button:focus, .form-control:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* === MEJORAS VISUALES === */
.lead {
  font-weight: 400;
  line-height: 1.8;
}

strong {
  font-weight: 600;
}

.card-body h4 i,
.card-body h5 i {
  margin-right: 8px;
}

/* === SCROLL SMOOTH === */
html {
  scroll-behavior: smooth;
}

/* === SEPARADORES === */
hr {
  border-color: var(--color-primary);
  opacity: 0.3;
}

/* === CLASES DE ICONOS === */
.navbar-logo {
  max-height: 50px;
}

.hero-logo {
  max-width: 400px;
  height: auto;
}

.icon-lg {
  font-size: 30px;
}

.icon-xl {
  font-size: 50px;
  color: var(--color-primary);
}

.icon-contact {
  font-size: 40px;
  color: var(--color-primary);
}

.icon-social {
  font-size: 24px;
}

/* === ANIMACIONES AL SCROLL === */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.service-card-btn {
  display: inline-block;
  margin-top: 1.25rem;
  padding: 0.65rem 1.4rem;
  border-radius: 50px;
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition-normal);
}

.service-card-btn:hover,
.service-card-btn:focus {
  background-color: var(--color-primary);
  color: var(--color-white);
  text-decoration: none;
}

.card-link {
  display: block;
  text-decoration: none;
  color: inherit;
  padding: 1rem;
  margin: -1rem;
  border-radius: 15px;
  transition: var(--transition-normal);
}

.card-link:hover {
  text-decoration: none;
  color: inherit;
  background-color: rgba(255, 140, 0, 0.05);
}

.service-gallery .gallery-card {
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid rgba(0,0,0,0.08);
  transition: var(--transition-normal);
}

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

.service-gallery .gallery-image {
  width: 100%;
  height: 220px;
  object-fit: cover;
  cursor: zoom-in;
}

.service-gallery .gallery-image:focus {
  outline: 3px solid rgba(255,140,0,0.8);
  outline-offset: 4px;
}

.image-lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.86);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s ease;
}

.image-lightbox.is-active {
  opacity: 1;
  visibility: visible;
}

.image-lightbox__dialog {
  position: relative;
  max-width: min(960px, 100%);
  max-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.image-lightbox__image {
  max-width: 100%;
  max-height: 90vh;
  object-fit: contain;
  border-radius: 16px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.35);
  background: var(--color-white);
}

.image-lightbox__close {
  position: absolute;
  top: -12px;
  right: -12px;
  width: 42px;
  height: 42px;
  border: none;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 1.5rem;
  cursor: pointer;
  box-shadow: var(--shadow-md);
}

.image-lightbox__close:hover {
  background: var(--color-primary-dark);
}

body.modal-open {
  overflow: hidden;
}

.service-gallery .gallery-card-body {
  padding: 1rem;
}

.service-gallery .gallery-card-body p {
  margin-bottom: 0;
  color: var(--color-gray);
}

.gallery-section {
  padding-top: 30px;
}

.gallery-section + .gallery-section {
  margin-top: 40px;
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Secciones animadas al entrar en viewport */
.animate-section {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.animate-section.animated {
  opacity: 1;
  transform: translateY(0);
}

/* Animación staggered para cards dentro de secciones */
.animate-section .card {
  animation: fadeInUp 0.6s ease forwards;
}

.animate-section .card:nth-child(2) {
  animation-delay: 0.1s;
}

.animate-section .card:nth-child(3) {
  animation-delay: 0.2s;
}

.animate-section .card:nth-child(4) {
  animation-delay: 0.3s;
}

.animate-section .card:nth-child(5) {
  animation-delay: 0.4s;
}

.animate-section .card:nth-child(6) {
  animation-delay: 0.5s;
}

.animate-section .card:nth-child(7) {
  animation-delay: 0.6s;
}

.animate-section .card:nth-child(8) {
  animation-delay: 0.7s;
}

.animate-section .card:nth-child(9) {
  animation-delay: 0.8s;
}