/* =========================================================
   TOKENS
   ========================================================= */
:root {
  --c-bg:        #121212;
  --c-surface:   #1b1b1b;
  --c-surface-2: #202020;
  --c-text:      #f5f1e8;
  --c-muted:     #8a8478;
  --c-gold:      #c7a467;
  --c-gold-dim:  #3d3428;
  --c-line:      rgba(199, 164, 103, 0.22);

  --font-display: 'Cormorant Garamond', serif;
  --font-body:    'Inter', sans-serif;

  --container: 1240px;
  --gap: 24px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* =========================================================
   RESET / BASE
   ========================================================= */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
  margin: 0;
  background: var(--c-bg);
  color: var(--c-text);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.1;
  margin: 0;
}

p { margin: 0; color: var(--c-muted); max-width: 62ch; }

:focus-visible {
  outline: 1px solid var(--c-gold);
  outline-offset: 3px;
}

.btn {
  display: inline-block;
  padding: 14px 30px;
  font-family: var(--font-body);
  font-size: 0.92rem;
  letter-spacing: 0.02em;
  border-radius: 2px;
  transition: background 0.3s var(--ease), color 0.3s var(--ease), border-color 0.3s var(--ease);
}
.btn--outline {
  border: 1px solid var(--c-gold);
  color: var(--c-text);
}
.btn--outline:hover {
  background: var(--c-gold);
  color: var(--c-bg);
}

.section-head {
  max-width: var(--container);
  margin: 0 auto 48px;
  padding: 0 var(--gap);
}
.section-head h2 {
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  margin-bottom: 12px;
}
.section-head--split {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 32px;
  flex-wrap: wrap;
}

section {
  padding: 100px 0;
}

/* =========================================================
   HEADER
   ========================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(18, 18, 18, 0.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--c-line);
}

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 18px var(--gap);
  display: flex;
  align-items: center;
  gap: 40px;
}

.logo {
  margin-right: auto;
}
.logo-img {
  height: 30px;
  width: auto;
  display: block;
}

.main-nav {
  display: flex;
  gap: 32px;
}
.main-nav a {
  font-size: 0.92rem;
  color: var(--c-text);
  position: relative;
  padding-bottom: 4px;
}
.main-nav a::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 1px;
  background: var(--c-gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease);
}
.main-nav a:hover::after { transform: scaleX(1); }

.social-row--header {
  display: flex;
  gap: 16px;
  color: var(--c-muted);
}
.social-row--header a { transition: color 0.25s var(--ease); }
.social-row--header a:hover { color: var(--c-gold); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px; height: 32px;
  background: none; border: none; cursor: pointer;
  padding: 0;
}
.nav-toggle span {
  width: 100%; height: 1px;
  background: var(--c-text);
}

/* =========================================================
   HERO
   ========================================================= */
.hero {
  position: relative;
  min-height: 72vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 0 var(--gap);
}

.hero-mosaic {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 4px;
  z-index: 0;
}
.hero-tile {
  background-color: var(--c-surface);
  background-image: linear-gradient(160deg, var(--c-surface-2) 0%, var(--c-bg) 100%);
  background-size: cover;
  background-position: center;
  opacity: 0;
  animation: heroFade 1.4s var(--ease) forwards;
}
.hero-tile--a { animation-delay: 0.05s; }
.hero-tile--b { animation-delay: 0.2s; }
.hero-tile--c { animation-delay: 0.35s; grid-row: span 1; }

@keyframes heroFade {
  from { opacity: 0; transform: scale(1.04); }
  to   { opacity: 1; transform: scale(1); }
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(18,18,18,0.15) 0%, rgba(18,18,18,0.55) 55%, rgba(18,18,18,0.92) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 640px;
}
.hero-kicker {
  color: var(--c-gold);
  font-size: 0.88rem;
  letter-spacing: 0.03em;
  margin-bottom: 18px;
}
.hero-title {
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  margin-bottom: 22px;
}
.hero-sub {
  color: var(--c-text);
  opacity: 0.78;
  margin-bottom: 34px;
  font-size: 1.02rem;
}

/* =========================================================
   SERVICES
   ========================================================= */
.services-grid {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gap);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--c-line);
  border: 1px solid var(--c-line);
}

.service {
  background: var(--c-bg);
  padding: 42px 36px;
  transition: background 0.35s var(--ease);
}
.service:hover { background: var(--c-surface); }
.service--wide { grid-column: span 2; }

.service h3 {
  font-size: 1.5rem;
  margin-bottom: 14px;
  color: var(--c-text);
}
.service p { max-width: 46ch; }

/* =========================================================
   PORTFOLIO
   ========================================================= */
.filters {
  display: flex;
  gap: 26px;
  flex-wrap: wrap;
}
.filter-btn {
  background: none;
  border: none;
  color: var(--c-muted);
  font-family: var(--font-body);
  font-size: 0.92rem;
  padding: 4px 0;
  cursor: pointer;
  border-bottom: 1px solid transparent;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}
.filter-btn:hover { color: var(--c-text); }
.filter-btn.is-active {
  color: var(--c-gold);
  border-bottom-color: var(--c-gold);
}

.portfolio-grid {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gap);
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  grid-auto-rows: 200px;
  gap: 10px;
}

.portfolio-item {
  position: relative;
  overflow: hidden;
  cursor: pointer;
  background: var(--c-surface);
  grid-column: span 2;
  grid-row: span 1;
}
.portfolio-item.is-hidden { display: none; }
.portfolio-item--tall { grid-row: span 2; }
.portfolio-item--wide { grid-column: span 3; }

.portfolio-item img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}
.portfolio-item:hover img { transform: scale(1.06); }

.portfolio-item-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 18px;
  background: linear-gradient(180deg, rgba(18,18,18,0) 50%, rgba(18,18,18,0.85) 100%);
  opacity: 0;
  transition: opacity 0.35s var(--ease);
}
.portfolio-item:hover .portfolio-item-overlay { opacity: 1; }
.portfolio-item-overlay .cat { color: var(--c-gold); font-size: 0.78rem; }
.portfolio-item-overlay .title { font-family: var(--font-display); font-size: 1.15rem; color: var(--c-text); }

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(10, 10, 10, 0.95);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s var(--ease);
  padding: 40px 20px;
}
.lightbox.is-open { opacity: 1; visibility: visible; }
.lightbox-inner { max-width: 900px; width: 100%; text-align: center; }
.lightbox-inner img { max-height: 78vh; margin: 0 auto; border: 1px solid var(--c-line); }
.lightbox-caption { color: var(--c-muted); margin-top: 16px; font-size: 0.92rem; }
.lightbox-close {
  position: absolute;
  top: 24px; right: 32px;
  background: none; border: none;
  color: var(--c-text);
  font-size: 2rem;
  cursor: pointer;
  line-height: 1;
}

/* =========================================================
   BITÁCORA / BLOG
   ========================================================= */
.bitacora-feed {
  max-width: 820px;
  margin: 0 auto;
  padding: 0 var(--gap);
  display: flex;
  flex-direction: column;
}

.post {
  padding: 40px 0;
  border-top: 1px solid var(--c-line);
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 32px;
}
.post:last-child { border-bottom: 1px solid var(--c-line); }

.post-media {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  background: var(--c-surface);
  cursor: pointer;
  transition: opacity 0.3s var(--ease);
}
.post-media:hover { opacity: 0.85; }

.post-date {
  color: var(--c-gold);
  font-size: 0.82rem;
  margin-bottom: 8px;
  display: block;
}
.post h3 { font-size: 1.6rem; margin-bottom: 10px; }
.post p { margin-bottom: 16px; }
.post-links {
  display: flex;
  gap: 18px;
}
.post-links a {
  font-size: 0.86rem;
  color: var(--c-text);
  border-bottom: 1px solid var(--c-gold-dim);
}
.post-links a:hover { border-bottom-color: var(--c-gold); color: var(--c-gold); }

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer {
  border-top: 1px solid var(--c-line);
  padding: 80px 0 0;
}
.footer-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gap) 60px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
}
.footer-logo-img { height: 38px; width: auto; display: block; margin-bottom: 10px; }
.footer-tag { max-width: 32ch; }
.footer-contact h3, .footer-social h3 {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.88rem;
  color: var(--c-muted);
  margin-bottom: 16px;
}
.footer-contact p { margin-bottom: 8px; }
.footer-contact a:hover, .footer-social a:hover { color: var(--c-gold); }
.footer-social .social-row { display: flex; flex-direction: column; gap: 10px; }

.footer-bottom {
  border-top: 1px solid var(--c-line);
  padding: 22px var(--gap);
  text-align: center;
}
.footer-bottom p { margin: 0 auto; font-size: 0.82rem; }

/* =========================================================
   WHATSAPP FAB
   ========================================================= */
.whatsapp-fab {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 56px; height: 56px;
  border-radius: 50%;
  background: #25D366;
  color: #121212;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(0,0,0,0.35);
  z-index: 50;
  transition: transform 0.3s var(--ease);
}
.whatsapp-fab:hover { transform: scale(1.08); }

.portfolio-empty {
  grid-column: 1 / -1;
  padding: 40px 0;
  text-align: center;
}

/* =========================================================
   SPLIT-VIEW (solo desktop): hero a la izquierda,
   servicios a la derecha, pantalla dividida al 50/50.
   Por debajo de 901px esto no se aplica y todo queda
   apilado como en la versión mobile original.
   ========================================================= */
@media (min-width: 901px) {
  .split-view {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: stretch;
  }

  .split-view .hero {
    min-height: 100vh;
  }

  .split-view .services {
    padding: 90px 56px;
    border-left: 1px solid var(--c-line);
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  .split-view .section-head {
    max-width: none;
    margin: 0 0 40px;
    padding: 0;
  }

  .split-view .services-grid {
    max-width: none;
    margin: 0;
    padding: 0;
    grid-template-columns: 1fr;
    background: none;
    border: none;
  }

  .split-view .service {
    grid-column: span 1 !important;
    padding: 26px 0;
    border-bottom: 1px solid var(--c-line);
  }
  .split-view .service:hover { background: none; }
  .split-view .service:last-child { border-bottom: none; }
}

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 900px) {
  .service--wide { grid-column: span 3; }
  .services-grid { grid-template-columns: repeat(3, 1fr); }
  .portfolio-item, .portfolio-item--wide { grid-column: span 3; }
  .post { grid-template-columns: 1fr; }
  .post-media { aspect-ratio: 16/9; }
  .footer-main { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
  .main-nav, .social-row--header { display: none; }
  .nav-toggle { display: flex; }

  .main-nav.is-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: var(--c-bg);
    border-bottom: 1px solid var(--c-line);
    padding: 20px var(--gap) 26px;
    gap: 18px;
  }

  section { padding: 70px 0; }
  .hero { min-height: 80vh; }

  .services-grid { grid-template-columns: 1fr; }
  .service--wide { grid-column: span 1; }

  .portfolio-grid { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 160px; }
  .portfolio-item, .portfolio-item--wide, .portfolio-item--tall { grid-column: span 2; grid-row: span 1; }

  .footer-main { grid-template-columns: 1fr; }
}