/* ============================================================
   ETLSPATIAL — Hoja de estilos principal
   ============================================================ */

/* ── Variables Globales ────────────────────────────────────── */
:root {
  --primary-color:    #0D3B66;
  --secondary-color:  #F4D35E;
  --accent-color:     #EE964B;
  --dark-color:       #2C3E50;
  --light-color:      #FAF0CA;
  --gray-color:       #95a5a6;
  --text-color:       #333333;
  --white-color:      #ffffff;

  --shadow:      0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg:   0 10px 20px rgba(0, 0, 0, 0.12);
  --transition:  all 0.3s ease;
  --radius:      6px;

  /* Tipografía — actualizada a Sora + DM Sans */
  --font-display: 'Sora', sans-serif;
  --font-body:    'DM Sans', sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--white-color);
}

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

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

a:hover {
  color: var(--dark-color);
}

/* Accesibilidad: foco visible */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 3px solid var(--accent-color);
  outline-offset: 3px;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 1rem;
}

ul {
  list-style: none;
}

/* ── Utilidades ────────────────────────────────────────────── */
.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.text-center { text-align: center; }

.section-padding { padding: 80px 0; }

.section-title {
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: 2.5rem;
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background-color: var(--primary-color);
  border-radius: 2px;
}

.section-description {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 3rem;
  color: var(--gray-color);
}

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

/* Clase accesible para ocultar visualmente */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ── Header y Navegación ───────────────────────────────────── */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: var(--white-color);
  box-shadow: var(--shadow);
  z-index: 1000;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

.logo h1 {
  font-size: 1.8rem;
  color: var(--primary-color);
  margin: 0;
}

.logo a {
  color: inherit;
}

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

.nav-menu li {
  margin-left: 1.5rem;
}

.nav-link {
  color: var(--dark-color);
  font-weight: 500;
  padding: 0.5rem 0;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-color);
  transition: var(--transition);
}

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

.cta-button {
  background-color: var(--primary-color);
  color: var(--white-color) !important;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
}

.cta-button:hover,
.cta-button:focus-visible {
  background-color: var(--dark-color);
  color: var(--white-color) !important;
}

/* Botón hamburguesa */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  width: 40px;
  height: 40px;
}

.mobile-menu-toggle .bar {
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--dark-color);
  border-radius: 2px;
  transition: var(--transition);
}

/* ── Hero Section ──────────────────────────────────────────── */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    linear-gradient(rgba(0, 0, 0, 0.65), rgba(0, 0, 0, 0.65)),
    url('hero-bg.jpg') center / cover no-repeat;
  color: var(--white-color);
  text-align: center;
  padding-top: 80px; /* compensa el header fijo */
}

/* NOTA: reemplaza hero-bg.jpg con tu imagen local.
   Se eliminó source.unsplash.com porque ese endpoint fue
   discontinuado y ya no sirve imágenes. */

.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  margin-bottom: 1.5rem;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  margin-bottom: 2rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  opacity: 0.9;
}

.cta-primary {
  background-color: var(--primary-color);
  color: var(--white-color);
  padding: 0.8rem 2rem;
  font-size: 1.1rem;
  border-radius: var(--radius);
  display: inline-block;
  font-weight: 600;
  transition: var(--transition);
}

.cta-primary:hover,
.cta-primary:focus-visible {
  background-color: var(--white-color);
  color: var(--primary-color);
  transform: translateY(-3px);
}

/* ── Servicios ─────────────────────────────────────────────── */
.servicios-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 3rem;
}

.servicio-card {
  background-color: var(--white-color);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  transition: var(--transition);
  text-align: center;
}

.servicio-card:hover,
.servicio-card:focus-within {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.servicio-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(13, 59, 102, 0.1);
  border-radius: 50%;
}

.servicio-card h3 {
  margin-bottom: 1rem;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  margin-top: 1rem;
  font-weight: 600;
  color: var(--primary-color);
}

.link-arrow::after {
  content: '→';
  margin-left: 6px;
  transition: var(--transition);
}

.link-arrow:hover::after {
  margin-left: 12px;
}

/* ── Proyectos ─────────────────────────────────────────────── */
.proyectos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
}

.proyecto-card {
  background-color: var(--white-color);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.proyecto-card:hover,
.proyecto-card:focus-within {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.proyecto-img {
  height: 250px;
  overflow: hidden;
}

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

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

.proyecto-content {
  padding: 1.5rem;
}

/* ── Botones ───────────────────────────────────────────────── */
.btn-secundario {
  display: inline-block;
  /* Corregido: --secondary-color es amarillo claro, texto oscuro para contraste WCAG */
  background-color: var(--secondary-color);
  color: var(--dark-color);
  padding: 0.5rem 1.5rem;
  border-radius: var(--radius);
  margin-top: 1rem;
  font-weight: 600;
  transition: var(--transition);
}

.btn-secundario:hover,
.btn-secundario:focus-visible {
  background-color: var(--dark-color);
  color: var(--white-color);
}

.btn-outline {
  display: inline-block;
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
  padding: 0.5rem 1.5rem;
  border-radius: var(--radius);
  margin-top: 2rem;
  font-weight: 600;
  transition: var(--transition);
}

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

.btn-submit {
  background-color: var(--primary-color);
  color: var(--white-color);
  padding: 0.8rem 2rem;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  transition: var(--transition);
  width: 100%;
}

.btn-submit:hover,
.btn-submit:focus-visible {
  background-color: var(--dark-color);
}

/* ── Equipo (estilos mantenidos por si se reactiva la sección) */
.equipo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
}

.miembro-card {
  background-color: var(--white-color);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  text-align: center;
  transition: var(--transition);
}

.miembro-card:hover { transform: translateY(-8px); }

.miembro-img {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 1rem;
  border: 5px solid var(--light-color);
}

.miembro-cargo {
  color: var(--primary-color);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.miembro-bio {
  margin-bottom: 1rem;
  font-size: 0.9rem;
}

.miembro-social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin: 0 5px;
  width: 35px;
  height: 35px;
  background-color: var(--light-color);
  border-radius: 50%;
  color: var(--dark-color);
  transition: var(--transition);
}

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

/* ── Blog ──────────────────────────────────────────────────── */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.blog-card {
  background-color: var(--white-color);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.blog-card:hover { transform: translateY(-8px); }

.blog-img {
  height: 200px;
  overflow: hidden;
}

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

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

.blog-content { padding: 1.5rem; }

.blog-fecha {
  display: block;
  color: var(--gray-color);
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
}

.blog-leer {
  display: inline-block;
  color: var(--primary-color);
  font-weight: 600;
  margin-top: 1rem;
}

.blog-card:hover .blog-leer { color: var(--dark-color); }

/* ── Contacto ──────────────────────────────────────────────── */
.contacto-flex {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
}

.contacto-info,
.contacto-form {
  flex: 1;
  min-width: 280px;
}

.contacto-form {
  background-color: var(--white-color);
  padding: 2rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.contacto-form h3 {
  margin-bottom: 1.5rem;
  font-size: 1.4rem;
}

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

.form-group label {
  display: block;
  margin-bottom: 0.4rem;
  font-weight: 500;
  font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid #ccc;
  border-radius: var(--radius);
  background-color: var(--light-color);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(13, 59, 102, 0.15);
}

.form-group textarea {
  height: 150px;
  resize: vertical;
}

/* Mensaje de feedback del formulario */
.form-message {
  margin-top: 1rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  font-size: 0.95rem;
  display: none; /* JS debe usar .form-message.visible */
}

.form-message.visible { display: block; }
.form-message.success { background-color: #d4edda; color: #155724; }
.form-message.error   { background-color: #f8d7da; color: #721c24; }

.contacto-detalles { margin: 2rem 0; }

.contacto-item {
  display: flex;
  align-items: center;
  margin-bottom: 1rem;
  gap: 0.75rem;
}

.contacto-item i {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  background-color: rgba(13, 59, 102, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
}

.contacto-social {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.contacto-social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--light-color);
  border-radius: 50%;
  color: var(--dark-color);
  transition: var(--transition);
}

.contacto-social a:hover,
.contacto-social a:focus-visible {
  background-color: var(--primary-color);
  color: var(--white-color);
}

/* ── Footer ────────────────────────────────────────────────── */
.footer {
  background-color: var(--dark-color);
  color: rgba(255, 255, 255, 0.85);
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
  padding-bottom: 40px;
}

.footer-brand h2 {
  color: var(--white-color);
  margin-bottom: 1rem;
}

.footer-brand p { font-size: 0.9rem; }

.footer-links h3,
.footer-services h3,
.footer-newsletter h3 {
  color: var(--white-color);
  font-size: 1rem;
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links ul li,
.footer-services ul li {
  margin-bottom: 0.5rem;
}

.footer-links a,
.footer-services a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-links a:hover,
.footer-services a:hover {
  color: var(--secondary-color);
}

.footer-newsletter p {
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.newsletter-form {
  display: flex;
  gap: 0;
  border-radius: var(--radius);
  overflow: hidden;
}

.newsletter-form input {
  flex: 1;
  padding: 0.65rem 1rem;
  border: none;
  font-family: var(--font-body);
  font-size: 0.9rem;
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--white-color);
  min-width: 0;
}

.newsletter-form input::placeholder { color: rgba(255, 255, 255, 0.5); }

.newsletter-form input:focus {
  outline: none;
  background-color: rgba(255, 255, 255, 0.15);
}

.newsletter-form button {
  padding: 0.65rem 1rem;
  background-color: var(--primary-color);
  color: var(--white-color);
  border: none;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.85rem;
  white-space: nowrap;
  transition: var(--transition);
}

.newsletter-form button:hover { background-color: var(--accent-color); }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
}

.footer-legal {
  display: flex;
  gap: 20px;
}

.footer-legal a {
  color: rgba(255, 255, 255, 0.6);
  transition: var(--transition);
}

.footer-legal a:hover { color: var(--secondary-color); }

/* ── Media Queries ─────────────────────────────────────────── */
@media (max-width: 768px) {
  .navbar {
    flex-wrap: wrap;
    position: relative;
  }

  .mobile-menu-toggle { display: flex; }

  .nav-menu {
    display: none;
    flex-direction: column;
    width: 100%;
    text-align: center;
    background-color: var(--white-color);
    position: absolute;
    top: 100%;
    left: 0;
    padding: 1rem 0;
    box-shadow: var(--shadow);
  }

  .nav-menu.active { display: flex; }

  .nav-menu li { margin: 0.75rem 0; }

  .servicios-grid,
  .proyectos-grid,
  .equipo-grid,
  .blog-grid {
    grid-template-columns: 1fr;
  }

  .contacto-flex { flex-direction: column; }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .footer-legal { justify-content: center; }
}

@media (max-width: 480px) {
  .container { padding: 0 12px; }

  .section-padding { padding: 48px 0; }

  .section-title { font-size: 1.8rem; }

  .hero-section { padding-top: 70px; }

  .newsletter-form { flex-direction: column; }

  .newsletter-form input,
  .newsletter-form button { width: 100%; }
}