/* ============================================================
   TERRACEUS — Estilos del sitio web
   Carga después de colors_and_type.css y components.css
   ============================================================ */

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { background: var(--color-cream); }

/* ---------- Layout ---------- */
.site-main { min-height: 60vh; }
.container { max-width: 1280px; margin: 0 auto; padding: 0 40px; }
.container-narrow { max-width: 880px; margin: 0 auto; padding: 0 40px; }

/* ---------- Top navigation (sticky, transforms on scroll) ---------- */
.topnav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 14px 0;
  transition: background 240ms ease, padding 240ms ease, border-color 240ms ease;
  background: transparent;
  border-bottom: 1px solid transparent;
}
.topnav.is-scrolled {
  background: var(--color-cream);
  border-bottom-color: var(--color-cream-dark);
  padding: 10px 0;
}
.topnav.is-solid {
  background: var(--color-cream);
  border-bottom-color: var(--color-cream-dark);
}
.topnav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-decoration: none;
  color: var(--color-primary);
  transition: color 240ms ease;
}
.brand-logo img { display: block; width: 300px; height: auto; }
.brand-logo .brand-light { display: none; }
@media (max-width: 780px) {
  .brand-logo img { width: 220px; }
}

/* On dark hero: usar la versión cream del PNG. Cuando se scrollea
   y el nav pasa a fondo claro, volvemos a la versión verde. */
.topnav.on-dark:not(.is-scrolled) .brand-logo .brand-dark { display: none; }
.topnav.on-dark:not(.is-scrolled) .brand-logo .brand-light { display: block; }

.topnav-links {
  display: flex;
  gap: 28px;
  align-items: center;
  flex-wrap: nowrap;
}
.topnav-links a.nav-item {
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--color-ink);
  text-decoration: none;
  font-weight: 400;
  padding: 8px 0;
  border-bottom: 2px solid transparent;
  transition: color 200ms ease, border-color 200ms ease, opacity 200ms ease;
  white-space: nowrap;
}
.topnav-links a.nav-item:hover { color: var(--color-primary); }
.topnav-links a.nav-item.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  font-weight: 500;
}

.topnav.on-dark .topnav-links a.nav-item { color: var(--color-cream); opacity: 0.85; }
.topnav.on-dark .topnav-links a.nav-item:hover { opacity: 1; color: var(--color-cream); }
.topnav.on-dark .topnav-links a.nav-item.active { opacity: 1; color: var(--color-cream); border-bottom-color: var(--color-cream); }
.topnav.on-dark.is-scrolled .topnav-links a.nav-item { color: var(--color-ink); opacity: 1; }
.topnav.on-dark.is-scrolled .topnav-links a.nav-item:hover { color: var(--color-primary); }
.topnav.on-dark.is-scrolled .topnav-links a.nav-item.active { color: var(--color-primary); border-bottom-color: var(--color-primary); }

/* ---------------- Language switcher (custom flyout) ---------------- */
.topnav .lang-switcher {
  position: relative;
  padding-left: 12px;
  margin-left: 4px;
  border-left: 1px solid var(--color-cream-dark);
  display: flex;
  align-items: center;
}
.topnav.on-dark .lang-switcher { border-left-color: rgba(252, 249, 247, 0.3); }
.topnav.on-dark.is-scrolled .lang-switcher { border-left-color: var(--color-cream-dark); }

.lang-trigger {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: none;
  border: none;
  padding: 4px 6px 4px 8px;
  font-family: var(--font-sans);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: inherit;
  cursor: pointer;
  border-radius: 3px;
  opacity: 0.85;
  transition: opacity 200ms ease;
}
.lang-trigger:hover,
.lang-trigger:focus-visible,
.lang-trigger[aria-expanded="true"] { opacity: 1; outline: none; }
.lang-trigger .lang-flag { font-size: 15px; line-height: 1; }
.lang-trigger .lang-chevron { transition: transform 200ms ease; opacity: 0.7; }
.lang-trigger[aria-expanded="true"] .lang-chevron { transform: rotate(180deg); }
.topnav.on-dark .lang-trigger { color: var(--color-cream); }
.topnav.on-dark.is-scrolled .lang-trigger { color: var(--color-ink); }

.lang-menu {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  min-width: 180px;
  margin: 0;
  padding: 6px;
  list-style: none;
  background: var(--color-cream);
  border: 1px solid var(--color-cream-dark);
  border-radius: 6px;
  box-shadow: 0 8px 24px rgba(15, 26, 23, 0.14);
  z-index: 1100;
}
.lang-menu li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  font-family: var(--font-sans);
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--color-ink);
  cursor: pointer;
  border-radius: 4px;
  transition: background-color 150ms ease;
}
.lang-menu li:hover { background: rgba(15, 26, 23, 0.06); }
.lang-menu li.on { font-weight: 600; }
.lang-menu li.on::after {
  content: "";
  width: 14px;
  height: 14px;
  margin-left: auto;
  background-color: var(--color-primary);
  -webkit-mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 14 14'><path fill='none' stroke='currentColor' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round' d='M2 7l3.5 3.5L12 4'/></svg>") no-repeat center / contain;
          mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 14 14'><path fill='none' stroke='currentColor' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round' d='M2 7l3.5 3.5L12 4'/></svg>") no-repeat center / contain;
}
.lang-menu .lang-flag { font-size: 15px; line-height: 1; }

/* Drawer (mobile) language section — list of buttons, no flyout */
.drawer-lang {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--color-cream-dark);
}
.drawer-lang-label {
  margin: 0 0 10px;
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
  font-weight: 600;
}
.drawer-lang-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}
.drawer-lang-grid button {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 40px;
  padding: 8px 12px;
  font-family: var(--font-sans);
  font-size: 14px;
  background: transparent;
  border: 1px solid var(--color-cream-dark);
  border-radius: 4px;
  color: var(--color-primary);
  cursor: pointer;
  text-align: left;
}
.drawer-lang-grid button .lang-flag { font-size: 16px; line-height: 1; }
.drawer-lang-grid button.on {
  border-color: var(--color-primary);
  background: var(--color-primary);
  color: var(--color-cream);
  font-weight: 600;
}

/* Mobile burger */
.burger {
  display: none;
  background: none;
  border: 1.5px solid currentColor;
  border-radius: 4px;
  padding: 8px 10px;
  cursor: pointer;
  color: var(--color-primary);
}
.topnav.on-dark .burger { color: var(--color-cream); }
.topnav.on-dark.is-scrolled .burger { color: var(--color-primary); }

/* Mobile drawer — compactado para que entre todo en pantalla 375×667 sin scroll */
.mobile-drawer {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: var(--color-cream);
  z-index: 200;
  padding: 20px 24px 24px;
  display: none;
  flex-direction: column;
  gap: 8px;
  overflow-y: auto;
}
.mobile-drawer.open { display: flex; }
.mobile-drawer .close-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}
.mobile-drawer a {
  font-family: var(--font-sans);
  font-size: 17px;
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 500;
  letter-spacing: 0.005em;
  border-bottom: 1px solid var(--color-cream-dark);
  padding: 11px 0;
  display: block;
}

/* spacer for fixed nav */
.nav-spacer { height: 84px; }
.nav-spacer.no-spacer { height: 0; }

/* ---------- Page header (interior pages) ---------- */
.page-header {
  padding: 140px 0 64px;
  border-bottom: 1px solid var(--color-cream-dark);
  background: var(--color-cream);
}
.page-header .overline {
  display: block;
  margin-bottom: 20px;
}
.page-header h1 {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: clamp(48px, 6vw, 72px);
  line-height: 1.02;
  letter-spacing: -0.012em;
  max-width: 18ch;
  margin: 0 0 24px;
}
.page-header h1 em { font-style: italic; }
.page-header .lead {
  font-family: var(--font-sans);
  font-size: 19px;
  line-height: 1.55;
  color: var(--color-ink-soft);
  max-width: 60ch;
  font-weight: 300;
  margin: 0;
}

/* ---------- Generic section ---------- */
.section { padding: 96px 0; }
.section-tight { padding: 64px 0; }
.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 48px;
  gap: 32px;
  flex-wrap: wrap;
}
.section-head h2 {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: clamp(32px, 4vw, 44px);
  margin: 0;
  letter-spacing: -0.005em;
  max-width: 22ch;
}
.section-head .overline { margin-bottom: 8px; display: block; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-primary);
  color: var(--color-cream);
  padding: 96px 0 40px;
  margin-top: 0;
}
.site-footer .fgrid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 48px;
}
.site-footer h4 {
  font-family: var(--font-sans);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  opacity: 0.55;
  margin: 0 0 18px;
  color: var(--color-cream);
  font-weight: 700;
}
.site-footer a {
  color: var(--color-cream);
  text-decoration: none;
  display: block;
  padding: 5px 0;
  font-size: 14px;
  opacity: 0.82;
  font-weight: 300;
  transition: opacity 200ms ease;
}
.site-footer a:hover { opacity: 1; }
.site-footer .brand-block {
  margin-bottom: 14px;
  display: block;
}
.site-footer .brand-block img {
  display: block;
  width: 300px;
  height: auto;
}
.site-footer .brand-tag {
  font-family: var(--font-sans);
  font-size: 13.5px;
  opacity: 0.7;
  max-width: 36ch;
  line-height: 1.6;
  font-weight: 300;
  margin: 0 0 16px;
}
.site-footer .brand-latin {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 14.5px;
  opacity: 0.6;
  line-height: 1.4;
  margin: 0 0 24px;
  max-width: 38ch;
}
.site-footer .brand-latin em {
  display: block;
  color: var(--color-accent-vivid);
  opacity: 0.85;
}
.site-footer .brand-latin small {
  display: block;
  font-family: var(--font-sans);
  font-style: normal;
  font-size: 11.5px;
  letter-spacing: 0.02em;
  margin-top: 4px;
  opacity: 0.85;
  font-weight: 300;
}
.site-footer .legal-block {
  font-family: var(--font-sans);
  font-size: 12px;
  opacity: 0.55;
  line-height: 1.65;
  font-weight: 300;
}
.site-footer .bottom {
  display: flex;
  justify-content: space-between;
  padding-top: 32px;
  margin-top: 64px;
  border-top: 1px solid rgba(252, 249, 247, 0.15);
  font-size: 12px;
  opacity: 0.55;
  flex-wrap: wrap;
  gap: 16px;
}
.site-footer .bottom a { display: inline; padding: 0; opacity: 1; }

/* ---------- Back-to-top FAB (Phase 1.3 mobile review #3) ---------- */
.back-to-top {
  position: fixed;
  bottom: calc(20px + env(safe-area-inset-bottom, 0px));
  right: 20px;
  width: 48px;
  height: 48px;
  border: none;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-cream);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 150;
  box-shadow: 0 4px 14px rgba(15, 26, 23, 0.18);
  opacity: 0.92;
  transition: opacity 200ms ease, transform 200ms ease, background 200ms ease;
}
.back-to-top:hover,
.back-to-top:focus-visible { opacity: 1; transform: translateY(-2px); outline: none; }
.back-to-top[hidden] { display: none; }

/* ---------- Utility ---------- */
.eyebrow {
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
  display: inline-block;
}
.eyebrow.on-dark { color: var(--color-cream); opacity: 0.85; }
.eyebrow.accent { color: var(--color-accent); }

.divider-h { height: 1px; background: var(--color-cream-dark); border: none; margin: 0; }

/* ---------- Responsive ---------- */
@media (max-width: 1080px) {
  .site-footer .fgrid { grid-template-columns: 1fr 1fr 1fr; }
  .site-footer .fgrid > :first-child { grid-column: 1 / -1; }
}
@media (max-width: 860px) {
  .container, .topnav-inner, .container-narrow { padding: 0 24px; }
  .topnav-links { display: none; }
  .burger { display: inline-flex; }
  .nav-spacer { height: 70px; }
  .page-header { padding: 120px 0 48px; }
  .section { padding: 64px 0; }
  .site-footer .fgrid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .site-footer .fgrid > :first-child { grid-column: 1 / -1; }
}

/* Smooth fade-in on load (subtle, no parallax) */
.fade-up {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 600ms ease, transform 600ms ease;
}
.fade-up.in { opacity: 1; transform: none; }