/* ==========================================================================
   PORTAL INMOBILIARIO - HOJA DE ESTILOS CSS
   Archivo: css/estilos.css
   ========================================================================== */

:root {
  --color-primario: #0f172a;
  --color-primario-light: #1e293b;
  --color-acento: #2563eb;
  --color-acento-hover: #1d4ed8;
  --color-exito: #059669;
  --color-peligro: #dc2626;
  --color-fondo: #f8fafc;
  --color-tarjeta: #ffffff;
  --color-texto: #0f172a;
  --color-texto-mutado: #64748b;
  --color-borde: #e2e8f0;
  --radio-borde: 12px;
  --sombra-suave: 0 4px 6px -1px rgb(0 0 0 / 0.05), 0 2px 4px -2px rgb(0 0 0 / 0.05);
  --sombra-elevada: 0 20px 25px -5px rgb(0 0 0 / 0.08), 0 8px 10px -6px rgb(0 0 0 / 0.04);
  --fuente: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
}

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

body {
  font-family: var(--fuente);
  background-color: var(--color-fondo);
  color: var(--color-texto);
  line-height: 1.6;
}

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

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

.contenedor {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Encabezado y Navegación */
.sitio-header {
  background-color: #ffffff;
  border-bottom: 1px solid var(--color-borde);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.marca-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-primario);
}

.marca-logo span {
  color: var(--color-acento);
}

.menu-navegacion {
  display: flex;
  align-items: center;
  gap: 20px;
  list-style: none;
}

.menu-navegacion a {
  font-weight: 500;
  color: var(--color-texto-mutado);
  transition: color 0.2s ease;
}

.menu-navegacion a:hover,
.menu-navegacion a.activo {
  color: var(--color-acento);
}

/* Botones */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.2s ease;
}

.btn-acento {
  background-color: var(--color-acento);
  color: #ffffff;
}

.btn-acento:hover {
  background-color: var(--color-acento-hover);
}

.btn-whatsapp {
  background-color: #25d366;
  color: #ffffff;
}

.btn-whatsapp:hover {
  background-color: #1ebc57;
}

.btn-outline {
  background-color: transparent;
  border-color: var(--color-borde);
  color: var(--color-texto);
}

.btn-outline:hover {
  background-color: #f1f5f9;
}

/* Hero & Buscador */
.seccion-hero {
  background: linear-gradient(rgba(15, 23, 42, 0.75), rgba(15, 23, 42, 0.85)),
              url('https://images.unsplash.com/photo-1600585154340-be6161a56a0c?auto=format&fit=crop&w=1600&q=80') center/cover;
  color: #ffffff;
  padding: 60px 0 80px;
  text-align: center;
}

.hero-titulo {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.hero-subtitulo {
  font-size: 1.15rem;
  color: #cbd5e1;
  max-width: 650px;
  margin: 0 auto 35px;
}

/* Barra de Filtros */
.barra-filtros {
  background: #ffffff;
  border-radius: var(--radio-borde);
  padding: 24px;
  box-shadow: var(--sombra-elevada);
  margin-top: -40px;
  margin-bottom: 40px;
  border: 1px solid var(--color-borde);
}

.form-filtros {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  align-items: end;
}

.campo-filtro {
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-align: left;
}

.campo-filtro label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-texto-mutado);
}

.campo-filtro input,
.campo-filtro select,
.campo-filtro textarea {
  padding: 10px 14px;
  border: 1px solid var(--color-borde);
  border-radius: 8px;
  font-size: 0.95rem;
  background-color: #ffffff;
  font-family: inherit;
  color: var(--color-texto);
}

.campo-filtro input:focus,
.campo-filtro select:focus,
.campo-filtro textarea:focus {
  outline: none;
  border-color: var(--color-acento);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

/* Cuadrícula de Propiedades */
.seccion-propiedades {
  padding: 40px 0 80px;
}

.encabezado-seccion {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.grid-propiedades {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

/* Tarjeta de Propiedad */
.tarjeta-propiedad {
  background: var(--color-tarjeta);
  border-radius: var(--radio-borde);
  border: 1px solid var(--color-borde);
  overflow: hidden;
  box-shadow: var(--sombra-suave);
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.tarjeta-propiedad:hover {
  transform: translateY(-4px);
  box-shadow: var(--sombra-elevada);
}

.tarjeta-img-contenedor {
  position: relative;
  height: 220px;
  overflow: hidden;
  background-color: #e2e8f0;
}

.tarjeta-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.tarjeta-propiedad:hover .tarjeta-img {
  transform: scale(1.05);
}

.etiqueta-operacion {
  position: absolute;
  top: 12px;
  left: 12px;
  background-color: rgba(15, 23, 42, 0.85);
  color: #ffffff;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  backdrop-filter: blur(4px);
}

.etiqueta-tipo {
  position: absolute;
  top: 12px;
  right: 12px;
  background-color: var(--color-acento);
  color: #ffffff;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 700;
}

.tarjeta-cuerpo {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.tarjeta-precio {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--color-acento);
  margin-bottom: 6px;
}

.tarjeta-titulo {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primario);
  margin-bottom: 8px;
  line-height: 1.35;
}

.tarjeta-ubicacion {
  font-size: 0.9rem;
  color: var(--color-texto-mutado);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.tarjeta-specs {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--color-borde);
  border-bottom: 1px solid var(--color-borde);
  padding: 12px 0;
  margin-bottom: 16px;
  font-size: 0.85rem;
  color: var(--color-texto-mutado);
}

.tarjeta-pie {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

/* Formularios de Publicación */
.formulario-publicar {
  background: #ffffff;
  border-radius: var(--radio-borde);
  border: 1px solid var(--color-borde);
  padding: 36px;
  box-shadow: var(--sombra-suave);
  max-width: 800px;
  margin: 30px auto;
}

.form-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

.form-grid-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

.form-grupo {
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-grupo label {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-primario);
}

/* Alertas */
.alerta {
  padding: 16px 20px;
  border-radius: 8px;
  margin-bottom: 24px;
  font-size: 0.95rem;
}

.alerta-exito {
  background-color: #ecfdf5;
  border: 1px solid #a7f3d0;
  color: #065f46;
}

.alerta-error {
  background-color: #fef2f2;
  border: 1px solid #fecaca;
  color: #991b1b;
}

/* Pie de Página */
.sitio-footer {
  background-color: var(--color-primario);
  color: #94a3b8;
  padding: 50px 0 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 30px;
  margin-bottom: 40px;
}

.footer-col h4 {
  color: #ffffff;
  margin-bottom: 16px;
  font-size: 1.05rem;
}

.footer-copy {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.85rem;
}

@media (max-width: 768px) {
  .hero-titulo {
    font-size: 1.85rem;
  }
  .form-grid-2,
  .form-grid-3 {
    grid-template-columns: 1fr;
  }
  .header-nav {
    flex-direction: column;
    height: auto;
    padding: 16px 0;
    gap: 12px;
  }
}