/* UP Café · borrador 4 (4 nov 2026). Estructura inspirada en sitios de tostadoras industriales
   (capacidad, soluciones, certificaciones). Textos, logo y fotos propios o con licencia (ver FOTOS.md). */
:root {
  --negro: #15100c;
  --cafe: #221812;
  --cobre: #c4874a;
  --cobre-2: #d9a56d;
  --crema: #f6efe4;
  --arena: #e9dcc8;
  --suave: #b8a693;
  --texto: #2a1d16;
  --serif: "Hoefler Text", Garamond, "EB Garamond", Baskerville, Georgia, serif;
  --sans: "Avenir Next", Avenir, "Helvetica Neue", Helvetica, Arial, sans-serif;
  --ancho: 1200px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--crema); color: var(--texto); font-family: var(--sans); line-height: 1.6; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.contenedor { max-width: var(--ancho); margin: 0 auto; padding: 0 28px; }

/* Barra */
.barra { position: fixed; inset: 0 0 auto 0; z-index: 30; background: rgba(21,16,12,0.82); backdrop-filter: blur(8px); border-bottom: 1px solid rgba(196,135,74,0.25); }
.fila { display: flex; align-items: center; justify-content: space-between; height: 76px; }
.logo { display: flex; align-items: center; gap: 12px; color: var(--crema); }
.logo img { height: 52px; width: auto; }
.logo span { font-family: var(--serif); font-size: 1.45rem; line-height: 1; }
.logo small { display: block; font-family: var(--sans); font-size: 0.68rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--cobre-2); margin-top: 5px; }
nav { display: flex; align-items: center; gap: 28px; color: var(--arena); font-size: 0.92rem; font-weight: 500; }
nav a:hover { color: var(--cobre-2); }

.boton { display: inline-block; background: var(--cobre); color: #fff; padding: 15px 30px; border-radius: 2px; font-weight: 600; letter-spacing: 0.04em; border: 0; cursor: pointer; font-family: var(--sans); font-size: 1rem; }
.boton:hover { background: var(--cobre-2); }
.boton.chico { padding: 10px 18px; font-size: 0.88rem; color: #fff; }
.boton.fantasma { background: transparent; border: 1px solid var(--arena); color: var(--crema); }
.boton.fantasma:hover { border-color: var(--cobre-2); color: var(--cobre-2); background: transparent; }

.etiqueta { text-transform: uppercase; letter-spacing: 0.22em; font-size: 0.78rem; font-weight: 600; color: var(--cobre-2); margin: 0 0 14px; }
.etiqueta.oscura { color: var(--cobre); }
h1, h2 { font-family: var(--serif); font-weight: 400; line-height: 1.08; margin: 0 0 18px; }
h2 { font-size: clamp(2.1rem, 3.8vw, 3.1rem); }
.intro { font-size: 1.12rem; max-width: 620px; color: #5d4c40; margin: 0 0 38px; }

/* Portada */
.portada { position: relative; min-height: 760px; display: flex; align-items: flex-end; color: var(--crema); overflow: hidden; }
.portada .fondo { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.portada .velo { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(15,10,7,0.88) 0%, rgba(15,10,7,0.55) 45%, rgba(15,10,7,0.15) 100%), linear-gradient(0deg, rgba(15,10,7,0.7), transparent 40%); }
.portada .texto { position: relative; padding-bottom: 110px; padding-top: 160px; width: 100%; }
.portada h1 { font-size: clamp(3rem, 6.5vw, 5.6rem); max-width: 820px; }
.bajada { font-size: 1.25rem; max-width: 600px; color: var(--arena); margin: 0 0 34px; }
.botones { display: flex; gap: 14px; flex-wrap: wrap; }

/* Cifras */
.cifras { background: var(--negro); color: var(--crema); padding: 46px 0; border-bottom: 1px solid rgba(196,135,74,0.25); }
.rejilla4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.cifras strong { display: block; font-family: var(--serif); font-weight: 400; font-size: 3.2rem; line-height: 1; color: var(--cobre-2); }
.cifras span { display: block; margin-top: 8px; color: var(--suave); font-size: 0.95rem; }

/* Secciones */
.seccion { padding: 110px 0; }
.seccion.oscura { background: var(--cafe); color: var(--crema); }
.seccion.oscura .intro { color: var(--suave); }

/* Tarjetas de soluciones */
.tarjetas { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.tarjeta { background: #fff; overflow: hidden; box-shadow: 0 10px 30px rgba(34,24,18,0.08); transition: transform .25s, box-shadow .25s; }
.tarjeta:hover { transform: translateY(-4px); box-shadow: 0 16px 40px rgba(34,24,18,0.16); }
.tarjeta img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.tarjeta div { padding: 24px 26px 28px; }
.tarjeta h3 { font-family: var(--serif); font-weight: 400; font-size: 1.6rem; margin: 0 0 8px; }
.tarjeta p { margin: 0; color: #6a574a; }

/* Dos columnas y mosaicos */
.dos { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.mosaico { display: grid; grid-template-columns: 1fr 1fr; grid-template-rows: 260px 260px; gap: 14px; }
.mosaico img { width: 100%; height: 100%; object-fit: cover; }
.mosaico .alta { grid-row: span 2; }
.procesos { list-style: none; padding: 0; margin: 0; display: grid; gap: 18px; }
.procesos li { border-left: 2px solid var(--cobre); padding-left: 18px; }
.procesos strong { display: block; font-family: var(--serif); font-weight: 400; font-size: 1.35rem; color: var(--crema); }
.procesos span { color: var(--suave); }
.ruta { display: flex; flex-wrap: wrap; gap: 8px; }
.mas { display: inline-block; margin-top: 22px; color: var(--cobre); font-weight: 600; text-decoration: none; border-bottom: 1px solid currentColor; padding-bottom: 2px; }
.glosario { background: var(--arena); }
.terminos { display: grid; grid-template-columns: repeat(3, 1fr); gap: 34px 40px; margin: 0; }
.terminos div { border-top: 1px solid var(--cobre); padding-top: 16px; }
.terminos dt { font-family: var(--serif); font-size: 1.4rem; margin: 0 0 8px; }
.terminos dd { margin: 0; color: #5d4c40; font-size: 0.98rem; }
.ruta span { border: 1px solid var(--cobre); color: var(--cafe); padding: 7px 14px; font-size: 0.88rem; border-radius: 999px; }

/* Sellos */
.sellos-banda { background: var(--negro); color: var(--crema); padding: 70px 0; text-align: center; }
.sellos { display: flex; justify-content: center; flex-wrap: wrap; gap: 18px; margin: 10px 0 22px; }
.sello { border: 1px solid var(--cobre); color: var(--arena); padding: 16px 28px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; font-size: 0.85rem; }
.nota { color: var(--suave); margin: 0; }

/* Contacto */
.contacto { background: var(--arena); }
.dato { margin: 0 0 10px; }
.dato strong { display: block; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.16em; color: var(--cobre); }
form { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; background: #fff; padding: 34px; box-shadow: 0 10px 30px rgba(34,24,18,0.08); }
form .ancho { grid-column: 1 / -1; }
/* Campo escondido contra robots (formulario de contacto.php). */
.trampa { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
/* Páginas de aviso: gracias.html y los errores de contacto.php. */
.aviso .contacto { min-height: 100vh; }
label { font-size: 0.82rem; font-weight: 600; letter-spacing: 0.04em; color: #5d4c40; display: grid; gap: 6px; }
input, select, textarea { font: inherit; font-weight: 400; padding: 12px 14px; border: 1px solid #d8c9b4; background: var(--crema); color: var(--texto); }

/* Pie */
footer { background: var(--negro); color: var(--suave); padding: 60px 0 40px; }
.pie { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 30px; }
.pie h4 { color: var(--crema); font-size: 0.8rem; letter-spacing: 0.16em; text-transform: uppercase; margin: 6px 0 14px; }
.pie a, .pie p { display: block; margin: 0 0 8px; font-size: 0.95rem; }
.pie a:hover { color: var(--cobre-2); }

/* Lo que Pablo tiene que confirmar */
/* Quita el comentario para ver lo que falta confirmar (lista en PENDIENTES.md). */
/* .por-confirmar { outline: 2px dashed #e0a100; outline-offset: 4px; } */

@media (max-width: 960px) {
  nav a:not(.boton) { display: none; }
  .tarjetas { grid-template-columns: 1fr 1fr; }
  .dos, .pie { grid-template-columns: 1fr; gap: 40px; }
  .rejilla4 { grid-template-columns: 1fr 1fr; }
  .terminos { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .tarjetas, form { grid-template-columns: 1fr; }
  .mosaico { grid-template-rows: 180px 180px; }
  .terminos { grid-template-columns: 1fr; }
}