/* ============================
   ESTILO GRÁFICO - Global CSS
   ============================ */

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

:root {
  --azul: #10538b;
  --azul-oscuro: #0c3f6a;
  --blanco: #ffffff;
  --gris-claro: #f5f5f5;
  --gris-texto: #555;
  --negro: #222;
  --font-main: 'Open Sans', Arial, sans-serif;
}

body {
  font-family: var(--font-main);
  color: var(--negro);
  background: #fff;
  font-size: 15px;
  line-height: 1.6;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; height: auto; display: block; }

/* ===== HEADER / NAV ===== */
header {
  background: #fff;
  box-shadow: 0 2px 8px rgba(0,0,0,0.10);
  position: sticky;
  top: 0;
  z-index: 1000;
  width: 100%;
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 24px;
  gap: 20px;
}

.logo img {
  height: 64px;
  width: auto;
}

nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

nav > a, .nav-servicios > a.nav-link {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--azul);
  text-transform: uppercase;
  padding: 8px 14px;
  border-radius: 3px;
  transition: background 0.2s;
}
nav > a:hover, .nav-servicios > a.nav-link:hover { background: var(--gris-claro); }

.nav-servicios {
  position: relative;
}
.nav-servicios > a.nav-link { cursor: pointer; }
.nav-dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: #fff;
  box-shadow: 0 6px 20px rgba(0,0,0,0.13);
  border-top: 3px solid var(--azul);
  min-width: 240px;
  z-index: 200;
}
.nav-servicios:hover .nav-dropdown { display: block; }
.nav-dropdown a {
  display: block;
  padding: 10px 18px;
  font-size: 13px;
  color: var(--gris-texto);
  font-weight: 600;
  border-bottom: 1px solid #f0f0f0;
  transition: background 0.15s, color 0.15s;
}
.nav-dropdown a:last-child { border-bottom: none; }
.nav-dropdown a:hover { background: var(--azul); color: #fff; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 6px;
}
.hamburger span { width: 26px; height: 3px; background: var(--azul); border-radius: 2px; transition: 0.3s; }

/* Mobile nav */
.mobile-nav {
  display: none;
  background: #fff;
  border-top: 2px solid var(--azul);
  padding: 10px 0 20px;
}
.mobile-nav a {
  display: block;
  padding: 10px 24px;
  font-size: 14px;
  font-weight: 600;
  color: var(--azul);
  border-bottom: 1px solid #f0f0f0;
}
.mobile-nav a:hover { background: var(--gris-claro); }
.mobile-nav .mobile-sub a {
  padding-left: 40px;
  font-weight: 400;
  color: var(--gris-texto);
  font-size: 13px;
}
.mobile-nav.open { display: block; }

/* ===== HERO / PORTADA ===== */
.hero {
  background: linear-gradient(135deg, var(--azul-oscuro) 0%, var(--azul) 100%);
  color: #fff;
  padding: 80px 24px 70px;
  text-align: center;
}
.hero-logo { margin: 0 auto 30px; max-width: 340px; }
.hero-quote {
  font-size: 17px;
  font-style: italic;
  line-height: 1.8;
  max-width: 680px;
  margin: 0 auto;
  opacity: 0.93;
}
.hero-quote strong { font-style: normal; }

/* ===== SECCIONES ===== */
.section { padding: 64px 24px; }
.section-center { text-align: center; }
.container { max-width: 1100px; margin: 0 auto; }

.section-title {
  font-size: 26px;
  font-weight: 800;
  color: var(--negro);
  margin-bottom: 18px;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.section-title strong { color: var(--azul); }
.section-subtitle {
  color: var(--gris-texto);
  font-size: 15px;
  max-width: 640px;
  margin: 0 auto 40px;
}

/* ===== SOBRE NOSOTROS ===== */
.sobre-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}
.sobre-text p { margin-bottom: 16px; color: var(--gris-texto); line-height: 1.8; }
.sobre-imgs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.sobre-imgs img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 4px;
}

/* ===== SERVICIOS GRID (HOME) ===== */
.bg-gris { background: var(--gris-claro); }
.servicios-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 40px;
}
.servicio-card {
  background: #fff;
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 3px 14px rgba(0,0,0,0.09);
  transition: transform 0.25s, box-shadow 0.25s;
  display: flex;
  flex-direction: column;
}
.servicio-card:hover { transform: translateY(-5px); box-shadow: 0 10px 28px rgba(0,0,0,0.14); }
.servicio-card img { width: 100%; height: 180px; object-fit: cover; }
.servicio-card-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
.servicio-card-body h4 {
  font-size: 14px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--azul);
  margin-bottom: 10px;
}
.servicio-card-body p { font-size: 13px; color: var(--gris-texto); line-height: 1.7; flex: 1; }
.servicio-card-body .btn-mas {
  display: inline-block;
  margin-top: 14px;
  font-size: 12px;
  font-weight: 700;
  color: var(--azul);
  text-transform: uppercase;
  border: 2px solid var(--azul);
  padding: 5px 14px;
  border-radius: 3px;
  transition: background 0.2s, color 0.2s;
  align-self: flex-start;
}
.servicio-card-body .btn-mas:hover { background: var(--azul); color: #fff; }

/* ===== CONTACTO ===== */
.contacto-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}
.contacto-info h3 { font-size: 22px; color: var(--azul); margin-bottom: 20px; }
.contacto-info p { margin-bottom: 10px; color: var(--gris-texto); }
.contacto-info a { color: var(--azul); }
.contacto-info strong { color: var(--negro); }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 5px; color: var(--negro); }
.form-group input, .form-group textarea {
  width: 100%;
  padding: 10px 13px;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-family: var(--font-main);
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
}
.form-group input:focus, .form-group textarea:focus { border-color: var(--azul); }
.form-group textarea { height: 120px; resize: vertical; }
.form-check { display: flex; gap: 10px; align-items: flex-start; margin-bottom: 16px; }
.form-check input { margin-top: 3px; flex-shrink: 0; }
.form-check label { font-size: 12px; color: var(--gris-texto); }
.btn-enviar {
  background: var(--azul);
  color: #fff;
  border: none;
  padding: 12px 32px;
  font-size: 14px;
  font-weight: 700;
  border-radius: 4px;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: background 0.2s;
}
.btn-enviar:hover { background: var(--azul-oscuro); }
.form-msg { margin-top: 12px; padding: 10px 14px; border-radius: 4px; font-size: 13px; display: none; }
.form-msg.ok { background: #e8f5e9; color: #2e7d32; display: block; }
.form-msg.error { background: #ffebee; color: #c62828; display: block; }
.required-note { font-size: 11px; color: var(--gris-texto); margin-top: 4px; }

/* ===== PÁGINA SERVICIO INTERIOR ===== */
.service-hero {
  background: linear-gradient(135deg, var(--azul-oscuro), var(--azul));
  color: #fff;
  padding: 60px 24px 50px;
}
.service-hero h1 { font-size: 32px; font-weight: 800; text-transform: uppercase; letter-spacing: 1px; }
.service-hero p { margin-top: 12px; font-size: 16px; opacity: 0.9; max-width: 700px; }
.service-hero strong { font-weight: 800; font-style: normal; }

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.gallery-grid a { display: block; overflow: hidden; border-radius: 4px; }
.gallery-grid img {
  width: 100%;
  aspect-ratio: 3/2;
  object-fit: cover;
  transition: transform 0.35s;
}
.gallery-grid a:hover img { transform: scale(1.06); }

/* Lightbox */
.lightbox-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  z-index: 9999;
  align-items: center;
  justify-content: center;
}
.lightbox-overlay.active { display: flex; }
.lightbox-overlay img { max-width: 90vw; max-height: 88vh; border-radius: 4px; box-shadow: 0 20px 60px rgba(0,0,0,0.5); }
.lightbox-close {
  position: absolute;
  top: 18px; right: 26px;
  font-size: 38px;
  color: #fff;
  cursor: pointer;
  line-height: 1;
}

/* ===== FOOTER ===== */
footer {
  background: var(--azul-oscuro);
  color: rgba(255,255,255,0.82);
  padding: 50px 24px 28px;
}
.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 50px;
  align-items: start;
}
.footer-logo img { height: 90px; width: auto; }
.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}
.footer-col h4 {
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: #fff;
  margin-bottom: 14px;
}
.footer-col a, .footer-col p {
  display: block;
  font-size: 13px;
  color: rgba(255,255,255,0.75);
  margin-bottom: 7px;
  line-height: 1.5;
}
.footer-col a:hover { color: #fff; }
.footer-bottom {
  max-width: 1100px;
  margin: 30px auto 0;
  border-top: 1px solid rgba(255,255,255,0.15);
  padding-top: 18px;
  font-size: 12px;
  color: rgba(255,255,255,0.5);
  text-align: center;
}

/* ===== BREADCRUMB ===== */
.breadcrumb {
  background: #f0f4f8;
  padding: 10px 24px;
  font-size: 12px;
  color: var(--gris-texto);
}
.breadcrumb a { color: var(--azul); }
.breadcrumb span { margin: 0 6px; }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  nav { display: none; }
  .hamburger { display: flex; }
  .sobre-grid { grid-template-columns: 1fr; }
  .servicios-grid { grid-template-columns: repeat(2, 1fr); }
  .contacto-grid { grid-template-columns: 1fr; gap: 36px; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr; gap: 28px; }
  .footer-cols { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .servicios-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: 1fr; }
  .footer-cols { grid-template-columns: 1fr; }
  .hero { padding: 50px 16px 45px; }
  .section { padding: 44px 16px; }
  .hero-logo { max-width: 240px; }
}