/* Sistema visual — Proposal Inc */

:root {
  --color-fondo:        #080808;
  --color-fondo-alt:    #101010;
  --color-tinta:        #F0EBE3;
  --color-tinta-suave:  #7A7068;
  --color-acento:       #C8A870;
  --color-acento-suave: #E2C898;
  --color-claro:        #F0EBE3;

  --fuente-titulo: 'Cormorant Garamond', Georgia, serif;
  --fuente-cuerpo: 'Jost', system-ui, sans-serif;

  --ancho-max:    1200px;
  --espacio-v:    clamp(6rem, 12vw, 11rem);
  --espacio-v-sm: clamp(3.5rem, 7vw, 6rem);
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--color-fondo);
  color: var(--color-tinta);
  font-family: var(--fuente-cuerpo);
  font-weight: 300;
  font-size: clamp(1rem, 1.15vw, 1.1rem);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--fuente-titulo);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: 0.01em;
}

img { display: block; max-width: 100%; height: auto; }
a  { color: inherit; }
ol, ul { list-style: none; }

.contenedor {
  width: 100%;
  max-width: var(--ancho-max);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 2.5rem);
}

/* ================================
   NAVEGACIÓN
   ================================ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 80;
  padding: 0 clamp(1.25rem, 4vw, 2.5rem);
  transition: background 0.35s ease, box-shadow 0.35s ease;
}

.nav--solida {
  background: rgba(8,8,8,0.93);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 rgba(240,235,227,0.06);
}

.nav-interior {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  max-width: var(--ancho-max);
  margin: 0 auto;
}

.nav-logo { display: flex; align-items: center; }
.nav-logo-img { height: 28px; width: auto; }

.nav-enlaces {
  display: none;
  gap: 2rem;
}

.nav-enlaces a {
  font-family: var(--fuente-cuerpo);
  font-size: 0.82rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(242,237,230,0.65);
  text-decoration: none;
  transition: color 0.2s ease;
}

.nav-enlaces a:hover { color: var(--color-claro); }

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-acento);
  color: var(--color-fondo);
  font-family: var(--fuente-cuerpo);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 0.5rem 1.1rem;
  border-radius: 999px;
  transition: background 0.2s ease;
}

.nav-cta:hover { background: var(--color-acento-suave); }
.nav-cta svg { width: 1rem; height: 1rem; }

@media (min-width: 860px) {
  .nav-enlaces { display: flex; }
}

/* ================================
   BOTÓN DE WHATSAPP
   ================================ */

.boton-wa {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--color-acento);
  color: var(--color-fondo);
  font-family: var(--fuente-cuerpo);
  font-weight: 500;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  padding: 0.85rem 1.6rem;
  border-radius: 999px;
  transition: background 0.25s ease, transform 0.2s ease;
}

.boton-wa:hover {
  background: var(--color-acento-suave);
  transform: translateY(-1px);
}

.boton-wa svg { width: 1.1rem; height: 1.1rem; flex-shrink: 0; }

.boton-wa-claro {
  background: var(--color-claro);
  color: var(--color-fondo);
}

.boton-wa-claro:hover {
  background: var(--color-acento);
  color: var(--color-fondo);
}

/* ================================
   RÓTULOS Y TÍTULOS DE SECCIÓN
   ================================ */

.seccion-rotulo {
  display: block;
  font-family: var(--fuente-cuerpo);
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--color-acento);
  margin-bottom: 1.1rem;
}

.seccion-rotulo--claro { color: var(--color-acento-suave); }

.seccion-titulo {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.01em;
  max-width: 20em;
}

/* ================================
   HERO
   ================================ */

.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  padding: 0;
}

.hero-foto {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
}

.hero-velo {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg,
      rgba(8,8,8,0.50) 0%,
      rgba(8,8,8,0.08) 45%,
      rgba(8,8,8,0.72) 100%
    );
}

.hero-contenido {
  position: relative;
  z-index: 2;
  color: var(--color-claro);
  padding: clamp(4rem, 8vw, 6rem) clamp(1.5rem, 5vw, 3.5rem);
  padding-bottom: clamp(5rem, 10vw, 8rem);
  max-width: 680px;
}

.hero-etiqueta {
  display: block;
  font-family: var(--fuente-cuerpo);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: rgba(242,237,230,0.65);
  margin-bottom: 1.2rem;
}

.hero h1 {
  font-size: clamp(3.2rem, 8.5vw, 6rem);
  font-weight: 400;
  line-height: 1.02;
  letter-spacing: -0.02em;
  margin-bottom: 1.6rem;
}

.hero h1 em {
  font-style: italic;
  font-weight: 400;
}

.hero-sub {
  font-size: clamp(0.95rem, 1.8vw, 1.1rem);
  font-weight: 300;
  line-height: 1.6;
  color: rgba(242,237,230,0.80);
  max-width: 38em;
  margin-bottom: 2.2rem;
}

.boton-wa-hero {
  background: rgba(242,237,230,0.10);
  color: var(--color-claro);
  border: 1px solid rgba(242,237,230,0.35);
  backdrop-filter: blur(4px);
}

.boton-wa-hero:hover {
  background: var(--color-claro);
  color: var(--color-fondo);
  border-color: var(--color-claro);
}

.hero-scroll {
  position: absolute;
  bottom: 2.5rem;
  right: 2.5rem;
  z-index: 2;
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
}

.hero-scroll-linea {
  display: block;
  width: 1px;
  height: 50px;
  background: rgba(242,237,230,0.4);
  animation: lineaDesliza 1.8s ease-in-out infinite;
  transform-origin: top;
}

@keyframes lineaDesliza {
  0%   { transform: scaleY(0); opacity: 0; }
  30%  { opacity: 1; }
  100% { transform: scaleY(1); opacity: 0; }
}

@media (min-width: 860px) {
  .hero-scroll { display: flex; }
}

/* ================================
   PRESENTACIÓN
   ================================ */

.presentacion {
  padding: var(--espacio-v) 0;
}

.presentacion-interior {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

.presentacion-foto {
  order: -1;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: 2px;
}

.presentacion-foto img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
}

@media (min-width: 720px) {
  .presentacion-interior {
    grid-template-columns: 1fr clamp(260px, 32vw, 400px);
    gap: clamp(3rem, 6vw, 5rem);
    align-items: center;
  }

  .presentacion-foto {
    order: 0;
    aspect-ratio: 2 / 3;
  }
}

.presentacion-texto h2 {
  font-size: clamp(2.2rem, 4.5vw, 3.8rem);
  font-style: italic;
  font-weight: 400;
  margin-bottom: 1.4rem;
  max-width: 16em;
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.presentacion-texto p {
  color: var(--color-tinta-suave);
  max-width: 38em;
  margin-bottom: 2rem;
}

.presentacion-detalles {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.8rem 1.5rem;
  margin-bottom: 2rem;
}

.presentacion-detalles li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.92rem;
  color: var(--color-tinta-suave);
}

.presentacion-detalles svg {
  width: 1.15rem;
  height: 1.15rem;
  color: var(--color-acento);
  flex-shrink: 0;
}

/* ================================
   PORTAFOLIO — MOSAICO EDITORIAL
   ================================ */

.portafolio { padding-top: var(--espacio-v); }

.portafolio-encabezado {
  margin-bottom: 2.5rem;
}

.portafolio-mosaico {
  display: flex;
  gap: 2px;
  align-items: flex-start;
}

.portafolio-columna {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.portafolio-celda {
  overflow: hidden;
  display: block;
  width: 100%;
}

.portafolio-celda img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.6s ease;
}

.portafolio-celda:hover img { transform: scale(1.04); }

@media (max-width: 719px) {
  .hero h1 {
    font-size: clamp(2.6rem, 9.5vw, 3.2rem);
  }

  .portafolio-mosaico {
    gap: 2px;
  }
}

/* ================================
   GALERÍA COLLAGE
   ================================ */

.galeria-collage {
  padding: var(--espacio-v-sm) 0;
  background: var(--color-fondo);
}

.galeria-collage .contenedor {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.galeria-collage img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  display: block;
}

/* ================================
   PROCESO
   ================================ */

.proceso {
  padding: var(--espacio-v) 0;
  background: var(--color-fondo-alt);
}

.proceso .seccion-titulo {
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.proceso-lista {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.proceso-paso {
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: 1.5rem;
  align-items: start;
  border-top: 1px solid rgba(242,237,230,0.10);
  padding: 2rem 0;
}

.proceso-paso:last-child {
  border-bottom: 1px solid rgba(242,237,230,0.10);
}

.proceso-numero {
  font-family: var(--fuente-titulo);
  font-size: 1.6rem;
  font-weight: 400;
  color: var(--color-acento);
  line-height: 1;
  padding-top: 0.2rem;
}

.proceso-info h3 {
  font-size: clamp(1.3rem, 2.5vw, 1.7rem);
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.proceso-info p {
  color: var(--color-tinta-suave);
  max-width: 40em;
}

@media (min-width: 720px) {
  .proceso-lista {
    grid-template-columns: repeat(2, 1fr);
    gap: 0 3rem;
  }

  .proceso-paso:nth-child(1),
  .proceso-paso:nth-child(2) {
    border-top: 1px solid rgba(242,237,230,0.10);
  }

  .proceso-paso:nth-child(3),
  .proceso-paso:nth-child(4) {
    border-bottom: 1px solid rgba(242,237,230,0.10);
    border-top: 1px solid rgba(242,237,230,0.10);
  }
}

@media (min-width: 1024px) {
  .proceso-lista {
    grid-template-columns: repeat(4, 1fr);
    gap: 0 2.5rem;
  }

  .proceso-paso:nth-child(3),
  .proceso-paso:nth-child(4) {
    border-bottom: none;
    border-top: 1px solid rgba(242,237,230,0.10);
  }

  .proceso-paso:last-child {
    border-bottom: none;
  }
}

/* ================================
   PREGUNTAS FRECUENTES
   ================================ */

.faq {
  padding: var(--espacio-v) 0;
  background: var(--color-fondo-alt);
}

.faq .seccion-titulo {
  margin-bottom: clamp(2rem, 4vw, 3.5rem);
}

.faq-lista {
  max-width: 800px;
}

.faq-item {
  border-top: 1px solid rgba(242,237,230,0.10);
}

.faq-item:last-child {
  border-bottom: 1px solid rgba(242,237,230,0.10);
}

.faq-pregunta {
  font-family: var(--fuente-titulo);
  font-size: clamp(1.1rem, 2vw, 1.3rem);
  font-weight: 500;
  cursor: pointer;
  padding: 1.4rem 3rem 1.4rem 0;
  position: relative;
  list-style: none;
  line-height: 1.3;
  transition: color 0.2s ease;
}

.faq-pregunta::-webkit-details-marker { display: none; }

.faq-pregunta::after {
  content: "+";
  position: absolute;
  right: 0.1rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.6rem;
  line-height: 1;
  color: var(--color-acento);
  font-family: var(--fuente-cuerpo);
  font-weight: 300;
  transition: transform 0.25s ease, color 0.2s ease;
}

.faq-item[open] .faq-pregunta::after {
  content: "\2013";
}

.faq-item[open] .faq-pregunta {
  color: var(--color-acento);
}

.faq-respuesta {
  padding: 0 3rem 1.6rem 0;
  color: var(--color-tinta-suave);
  line-height: 1.75;
}

/* ================================
   CIERRE
   ================================ */

.cierre {
  position: relative;
  overflow: hidden;
  padding: var(--espacio-v) 0;
  text-align: center;
  background: var(--color-fondo);
}

.cierre-fondo {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.cierre-fondo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  opacity: 0.45;
  transform: scale(1.1);
  will-change: transform;
}

.cierre-velo {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(8,8,8,0.50) 0%,
    rgba(8,8,8,0.72) 100%
  );
}

.cierre-contenido {
  position: relative;
  z-index: 2;
  color: var(--color-claro);
  max-width: 640px;
}

.cierre-contenido h2 {
  font-size: clamp(2.8rem, 6vw, 4.2rem);
  font-weight: 400;
  line-height: 1.1;
  margin-bottom: 1rem;
}

.cierre-contenido h2 em {
  font-style: italic;
}

.cierre-contenido p {
  color: rgba(242,237,230,0.72);
  max-width: 30em;
  margin: 0 auto 2.2rem;
}

/* ================================
   FOOTER
   ================================ */

.pie {
  background: var(--color-fondo-alt);
  color: var(--color-claro);
  text-align: center;
  padding: 3.5rem 0;
  border-top: 1px solid rgba(242,237,230,0.08);
}

.pie-logo {
  height: 30px;
  width: auto;
  margin: 0 auto 1.1rem;
}

.pie-lema {
  color: rgba(242,237,230,0.55);
  font-size: 0.9rem;
  margin-bottom: 1.8rem;
}

.pie-redes {
  display: flex;
  justify-content: center;
  gap: 1.4rem;
  margin-bottom: 1.6rem;
}

.pie-redes a {
  color: rgba(242,237,230,0.65);
  transition: color 0.2s ease;
}

.pie-redes a:hover { color: var(--color-claro); }
.pie-redes svg { width: 1.4rem; height: 1.4rem; }

.pie-contacto {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  font-size: 0.88rem;
  margin-bottom: 1.8rem;
}

.pie-contacto a {
  color: rgba(242,237,230,0.75);
  text-decoration: none;
  transition: color 0.2s ease;
}

.pie-contacto a:hover { color: var(--color-acento-suave); }

.pie-creditos {
  font-size: 0.75rem;
  color: rgba(242,237,230,0.35);
}

/* ================================
   LIGHTBOX
   ================================ */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(8,8,8,0.97);
  padding: 1rem;
}

.lightbox.abierto { display: flex; }

.lightbox-foto {
  max-width: 92vw;
  max-height: 88vh;
  object-fit: contain;
  transition: opacity 0.18s ease;
}

.lightbox-contador {
  position: absolute;
  top: 1.4rem;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--fuente-cuerpo);
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.3em;
  color: rgba(240,235,227,0.40);
  pointer-events: none;
  white-space: nowrap;
}

.lightbox button {
  position: absolute;
  background: none;
  border: none;
  color: var(--color-claro);
  cursor: pointer;
  padding: 0.6rem;
  transition: color 0.2s ease;
}

.lightbox button:hover { color: var(--color-acento-suave); }
.lightbox button svg { width: 2rem; height: 2rem; }

.lightbox-cerrar { top: 1.2rem; right: 1.2rem; }

.lightbox-flecha {
  top: 50%;
  transform: translateY(-50%);
}

.lightbox-anterior { left: 0.5rem; }
.lightbox-siguiente { right: 0.5rem; }

@media (min-width: 720px) {
  .lightbox-anterior { left: 1.5rem; }
  .lightbox-siguiente { right: 1.5rem; }
}

/* ================================
   BOTÓN FLOTANTE DE WHATSAPP
   ================================ */

@keyframes pulso-wa {
  0%, 100% { box-shadow: 0 4px 20px rgba(196,154,108,0.35); }
  50%       { box-shadow: 0 4px 20px rgba(196,154,108,0.35), 0 0 0 10px rgba(200,168,112,0.14); }
}

.boton-flotante {
  position: fixed;
  right: 1.25rem;
  bottom: calc(1.25rem + env(safe-area-inset-bottom, 0px));
  z-index: 60;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3.5rem;
  height: 3.5rem;
  background: var(--color-acento);
  color: var(--color-fondo);
  border-radius: 50%;
  box-shadow: 0 4px 20px rgba(196,154,108,0.35);
  transition: background 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
  animation: pulso-wa 5s ease-in-out 4s infinite;
}

.boton-flotante:hover {
  background: var(--color-acento-suave);
  transform: scale(1.06);
  box-shadow: 0 6px 24px rgba(196,154,108,0.45);
}

.boton-flotante svg { width: 1.7rem; height: 1.7rem; }

/* ================================
   PROCESO — ENTRADA ESCALONADA
   ================================ */

.proceso .contenedor.aparece {
  opacity: 1;
  transform: none;
}

.proceso .contenedor.aparece .proceso-paso {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.proceso .contenedor.visible .proceso-paso {
  opacity: 1;
  transform: none;
}

.proceso .contenedor.visible .proceso-paso:nth-child(1) { transition-delay: 0ms; }
.proceso .contenedor.visible .proceso-paso:nth-child(2) { transition-delay: 130ms; }
.proceso .contenedor.visible .proceso-paso:nth-child(3) { transition-delay: 260ms; }
.proceso .contenedor.visible .proceso-paso:nth-child(4) { transition-delay: 390ms; }

/* ================================
   ANIMACIONES DE ENTRADA
   ================================ */

.aparece {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.75s ease, transform 0.75s ease;
}

.aparece.visible {
  opacity: 1;
  transform: none;
}

.aparece-tardo {
  transition-delay: 0.15s;
}

@media (prefers-reduced-motion: reduce) {
  .aparece,
  .aparece-tardo {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .proceso .contenedor.aparece .proceso-paso {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .hero-scroll-linea { animation: none; opacity: 0.3; }
  .portafolio-celda img { transition: none; }
  .boton-flotante { animation: none; }
  .lightbox-foto { transition: none; }
}