/* ============ CERVOL Arquitectura Mexicana ============ */
:root {
  --primario: #1a1a1a;
  --secundario: #8a6d3b;
  --dorado: #c9a96a;
  --texto: #3d3d3d;
  --fondo: #ffffff;
  --fondo-claro: #f7f5f1;
  --fondo-oscuro: #141414;
  --borde: #e8e4dc;
  --fuente: 'Jost', 'Helvetica Neue', Arial, sans-serif;
  --fuente-titulos: 'Cormorant Garamond', Georgia, serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--fuente); color: var(--texto); background: var(--fondo); font-size: 16px; line-height: 1.7; overflow-x: hidden; }
h1, h2, h3, h4 { font-family: var(--fuente-titulos); color: var(--primario); font-weight: 500; line-height: 1.2; }
a { text-decoration: none; color: inherit; transition: all 0.3s ease; }
img { max-width: 100%; height: auto; display: block; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

.btn { display: inline-block; padding: 14px 36px; border: 1px solid var(--secundario); color: var(--secundario); font-family: var(--fuente); font-size: 13px; letter-spacing: 2px; text-transform: uppercase; cursor: pointer; transition: all 0.3s ease; background: transparent; }
.btn:hover { background: var(--secundario); color: #fff; }
.btn-oscuro { border-color: #fff; color: #fff; }
.btn-oscuro:hover { background: #fff; color: var(--primario); }

/* Topbar */
.topbar { background: var(--primario); color: #bdbdbd; font-size: 12px; letter-spacing: 1px; padding: 8px 0; }
.topbar .container { display: flex; justify-content: space-between; align-items: center; }
.topbar a { color: #bdbdbd; margin: 0 10px; }
.topbar a:hover { color: var(--dorado); }
.lang-switch { display: flex; gap: 8px; }
.lang-switch button { background: transparent; border: 1px solid #555; color: #bdbdbd; padding: 3px 10px; font-size: 11px; cursor: pointer; letter-spacing: 1px; }
.lang-switch button.activo, .lang-switch button:hover { background: var(--dorado); color: #fff; border-color: var(--dorado); }

/* Header */
.header { background: var(--fondo); padding: 20px 0; border-bottom: 1px solid var(--borde); position: sticky; top: 0; z-index: 1000; }
.header .container { display: flex; justify-content: space-between; align-items: center; }
.logo img { height: 55px; width: auto; }
.nav-menu { display: flex; list-style: none; gap: 35px; }
.nav-menu a { font-size: 13px; letter-spacing: 2px; text-transform: uppercase; color: var(--primario); position: relative; padding: 5px 0; }
.nav-menu a::after { content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 1px; background: var(--secundario); transition: all 0.3s ease; }
.nav-menu a:hover::after, .nav-menu a.activo::after { width: 100%; }
.nav-menu a:hover, .nav-menu a.activo { color: var(--secundario); }
.menu-toggle { display: none; background: none; border: none; cursor: pointer; flex-direction: column; gap: 5px; padding: 5px; }
.menu-toggle span { width: 25px; height: 2px; background: var(--primario); }

/* Hero */
.hero { position: relative; height: 90vh; min-height: 600px; display: flex; align-items: center; justify-content: center; text-align: center; color: #fff; overflow: hidden; background: var(--fondo-oscuro); }
.hero img.hero-fondo { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0.55; }
.hero-contenido { position: relative; z-index: 2; max-width: 850px; padding: 0 24px; }
.hero h1 { font-size: clamp(2.4rem, 6vw, 4rem); color: #fff; margin-bottom: 20px; letter-spacing: 1px; }
.hero p { font-size: 1.1rem; color: #e0ddd7; margin-bottom: 35px; }
.hero-separador { width: 70px; height: 1px; background: var(--dorado); margin: 0 auto 25px; }

/* Secciones */
.seccion { padding: 90px 0; }
.seccion-clara { background: var(--fondo); }
.seccion-gris { background: var(--fondo-claro); }
.seccion-oscura { background: var(--fondo-oscuro); color: #d5d5d5; }
.seccion-oscura h2, .seccion-oscura h3 { color: #fff; }
.encabezado-seccion { text-align: center; max-width: 650px; margin: 0 auto 60px; }
.encabezado-seccion h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); margin-bottom: 15px; }
.encabezado-seccion .etiqueta { font-size: 12px; letter-spacing: 4px; text-transform: uppercase; color: var(--secundario); margin-bottom: 10px; display: inline-block; }
.encabezado-seccion p { color: #7a7a7a; font-size: 15px; }

/* Grids */
.grid { display: grid; gap: 30px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* Cards */
.card { position: relative; overflow: hidden; background: #fff; }
.card img { width: 100%; height: 280px; object-fit: cover; transition: transform 0.6s ease; }
.card:hover img { transform: scale(1.05); }
.card-contenido { padding: 20px 0 5px; }
.card-contenido h3 { font-size: 1.15rem; margin-bottom: 6px; }
.card-contenido p { font-size: 13px; color: #8a8a8a; letter-spacing: 1px; }

/* Galeria */
.galeria { display: grid; grid-template-columns: repeat(3, 1fr); gap: 5px; }
.galeria-item { position: relative; overflow: hidden; cursor: pointer; aspect-ratio: 1/1; }
.galeria-item img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.galeria-item:hover img { transform: scale(1.08); }
.galeria-item .galeria-nombre { position: absolute; bottom: 0; left: 0; right: 0; padding: 50px 15px 15px; background: linear-gradient(transparent, rgba(0,0,0,0.75)); color: #fff; font-size: 13px; letter-spacing: 1px; opacity: 0; }
.galeria-item:hover .galeria-nombre { opacity: 1; }

/* Filtros */
.filtros { display: flex; justify-content: center; flex-wrap: wrap; gap: 15px; margin-bottom: 45px; }
.filtros button { background: none; border: 1px solid var(--borde); padding: 8px 22px; font-family: var(--fuente); font-size: 12px; letter-spacing: 1.5px; text-transform: uppercase; cursor: pointer; color: var(--texto); }
.filtros button:hover, .filtros button.activo { border-color: var(--secundario); background: var(--secundario); color: #fff; }

/* Sobre nosotros */
.sobre-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; align-items: center; }
.sobre-grid img { width: 100%; height: 550px; object-fit: cover; }
.sobre-contenido h2 { font-size: 2.2rem; margin-bottom: 25px; }
.sobre-contenido p { margin-bottom: 20px; color: #666; }

/* MISIÓN / VISIÓN / VALORES */
.mvv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; margin-top: 60px; }
.mvv-item { padding: 40px 30px; background: var(--fondo-claro); border-top: 2px solid var(--dorado); }
.mvv-item .numero { font-family: var(--fuente-titulos); font-size: 2.5rem; color: var(--dorado); margin-bottom: 15px; display: block; }
.mvv-item h3 { font-size: 1.4rem; margin-bottom: 15px; }
.mvv-item p { font-size: 14px; color: #666; }
.valores-lista { display: flex; flex-wrap: wrap; justify-content: center; gap: 15px; margin-top: 45px; }
.valor-chip { border: 1px solid var(--dorado); color: var(--secundario); padding: 12px 28px; font-size: 12px; letter-spacing: 2px; text-transform: uppercase; }
.valor-chip:hover { background: var(--dorado); color: #fff; }

/* Slider */
.slider { position: relative; overflow: hidden; height: 500px; }
.slider-item { position: absolute; inset: 0; opacity: 0; transition: opacity 1s ease; }
.slider-item.activo { opacity: 1; }
.slider-item img { width: 100%; height: 100%; object-fit: cover; }
.slider-flechas { position: absolute; top: 50%; transform: translateY(-50%); z-index: 5; background: rgba(255,255,255,0.9); border: none; width: 50px; height: 50px; cursor: pointer; font-size: 20px; color: var(--primario); }
.slider-flechas:hover { background: var(--secundario); color: #fff; }
.slider-prev { left: 20px; }
.slider-next { right: 20px; }

/* Contacto */
.contacto-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; }
.contacto-info h3 { font-size: 1.6rem; margin-bottom: 25px; }
.contacto-item { display: flex; align-items: center; gap: 18px; margin-bottom: 25px; padding-bottom: 25px; border-bottom: 1px solid var(--borde); }
.contacto-item .icono { width: 50px; height: 50px; border: 1px solid var(--secundario); display: flex; align-items: center; justify-content: center; color: var(--secundario); font-size: 18px; flex-shrink: 0; }
.contacto-item h4 { font-size: 14px; letter-spacing: 1px; text-transform: uppercase; margin-bottom: 4px; }
.contacto-item p, .contacto-item a { font-size: 15px; color: #555; }
.contacto-item a:hover { color: var(--secundario); }
.formulario label { display: block; font-size: 12px; letter-spacing: 2px; text-transform: uppercase; margin-bottom: 8px; color: var(--primario); }
.formulario input, .formulario textarea, .formulario select { width: 100%; padding: 14px 16px; border: 1px solid var(--borde); font-family: var(--fuente); font-size: 15px; margin-bottom: 22px; background: #fff; }
.formulario input:focus, .formulario textarea:focus, .formulario select:focus { outline: none; border-color: var(--secundario); }
.formulario textarea { resize: vertical; min-height: 130px; }

/* Redes */
.sociales { display: flex; gap: 14px; margin-top: 30px; }
.sociales a { width: 45px; height: 45px; border: 1px solid var(--borde); display: flex; align-items: center; justify-content: center; font-size: 16px; color: var(--primario); }
.sociales a:hover { background: var(--secundario); border-color: var(--secundario); color: #fff; }

/* CTA */
.cta { background: linear-gradient(rgba(20,20,20,0.8), rgba(20,20,20,0.8)), url('../img/prod6.jpg') center/cover; text-align: center; padding: 100px 24px; color: #fff; }
.cta h2 { font-size: 2.4rem; color: #fff; margin-bottom: 20px; }
.cta p { max-width: 560px; margin: 0 auto 35px; color: #d0ccc5; }

/* Footer */
.footer { background: var(--primario); color: #8f8f8f; padding: 70px 0 0; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 45px; padding-bottom: 50px; }
.footer h4 { color: #fff; font-size: 15px; letter-spacing: 2px; text-transform: uppercase; margin-bottom: 20px; font-family: var(--fuente); font-weight: 500; }
.footer .logo-footer img { height: 45px; margin-bottom: 18px; filter: brightness(10); opacity: 0.9; }
.footer ul { list-style: none; }
.footer ul li { margin-bottom: 10px; }
.footer ul a:hover { color: var(--dorado); }
.footer-bottom { border-top: 1px solid #2d2d2d; padding: 20px 0; font-size: 12px; color: #666; }
.footer-bottom .container { display: flex; justify-content: space-between; align-items: center; }

/* WhatsApp */
.whatsapp-btn { position: fixed; bottom: 25px; right: 25px; width: 60px; height: 60px; background: #25d366; border-radius: 50%; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 30px; box-shadow: 0 4px 15px rgba(37,211,102,0.4); z-index: 999; }
.whatsapp-btn:hover { transform: scale(1.1); color: #fff; }

/* Lightbox */
.lightbox { position: fixed; inset: 0; background: rgba(0,0,0,0.92); display: none; align-items: center; justify-content: center; z-index: 2000; cursor: pointer; }
.lightbox.abierta { display: flex; }
.lightbox img { max-width: 90%; max-height: 85vh; }
.lightbox-cerrar { position: absolute; top: 20px; right: 30px; color: #fff; font-size: 40px; cursor: pointer; background: none; border: none; }

/* Animaciones */
.fade-in { opacity: 0; transform: translateY(25px); transition: opacity 0.8s ease, transform 0.8s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }

/* Responsive */
@media (max-width: 992px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .galeria { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .menu-toggle { display: flex; }
  .nav-menu { position: fixed; top: 0; right: -280px; width: 280px; height: 100vh; background: #fff; flex-direction: column; padding: 80px 30px; gap: 25px; box-shadow: -5px 0 20px rgba(0,0,0,0.1); transition: right 0.4s ease; z-index: 1500; }
  .nav-menu.abierto { right: 0; }
  .grid-2, .grid-3, .grid-4, .sobre-grid, .contacto-grid, .mvv-grid { grid-template-columns: 1fr; }
  .hero { height: 75vh; min-height: 480px; }
  .seccion { padding: 60px 0; }
  .galeria { grid-template-columns: 1fr; }
  .slider { height: 350px; }
  .sobre-grid img { height: 350px; }
  .footer-bottom .container { flex-direction: column; gap: 10px; text-align: center; }
  .topbar .container { flex-direction: column; gap: 6px; }
}