/* ============================================================
   ACERINA AMADOR — Components: nav, lang toggle, menu, footer
   ============================================================ */

/* ---------------- Navigation ---------------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: var(--z-nav);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: clamp(1rem, 2.2vw, 1.6rem) var(--gutter);
  transition: background var(--dur-slow) var(--ease-out-quint),
              backdrop-filter var(--dur-slow) var(--ease-out-quint),
              border-color var(--dur-slow) var(--ease-out-quint),
              padding var(--dur-slow) var(--ease-out-quint);
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: oklch(0.15 0.018 25 / 0.72);
  backdrop-filter: blur(14px) saturate(1.1);
  -webkit-backdrop-filter: blur(14px) saturate(1.1);
  border-bottom-color: var(--hairline-soft);
  padding-block: clamp(0.7rem, 1.4vw, 1rem);
}

.brand {
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  font-size: clamp(1.05rem, 1.5vw, 1.3rem);
  line-height: 1;
  color: var(--bone);
  white-space: nowrap;
}
.brand b { color: var(--vermelho-bright); font-weight: 700; }

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(1.1rem, 2vw, 2.1rem);
}
.nav-links a {
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--bone-dim);
}
.nav-links a:hover { color: var(--vermelho-bright); }
.nav-right { display: flex; align-items: center; gap: var(--space-md); }

/* Language toggle (segmented) */
.lang {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--hairline);
  border-radius: var(--r-pill);
  padding: 3px;
  gap: 2px;
}
.lang button {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 0.35em 0.7em;
  border-radius: var(--r-pill);
  color: var(--muted);
  transition: color var(--dur-ui), background var(--dur-ui);
}
.lang button[aria-pressed="true"] { background: var(--vermelho); color: var(--vermelho-ink); }
.lang button:not([aria-pressed="true"]):hover { color: var(--bone); }

/* Selector de tema (paleta) — mismo lenguaje visual que el toggle de idioma */
.theme {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  border: 1px solid var(--hairline);
  border-radius: var(--r-pill);
  padding: 4px;
}
.theme button {
  position: relative;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--sw, var(--vermelho));
  transition: transform var(--dur-ui) var(--ease-out-quint),
              box-shadow var(--dur-ui) var(--ease-out-quint);
}
.theme button:hover { transform: scale(1.12); }
.theme button[aria-pressed="true"] {
  box-shadow: 0 0 0 2px var(--obsidian), 0 0 0 3.5px var(--bone);
}
/* Muestras: color fijo por tema, no dependen del tema activo */
.theme button[data-set="vermelho"] { --sw: oklch(0.585 0.205 30); }
.theme button[data-set="violeta"]  { --sw: oklch(0.60 0.20 310); }
.theme button[data-set="ambar"]    { --sw: oklch(0.70 0.145 80); }
.theme button[data-set="clara"]    { --sw: oklch(0.93 0.008 85); }

/* En el menú móvil: muestras grandes con su nombre */
.mobile-menu .theme-block { margin-top: var(--space-lg); }
.mobile-menu .theme-block .label { display: block; margin-bottom: var(--space-sm); }
.mobile-menu .theme { padding: 6px; gap: 8px; }
.mobile-menu .theme button { width: 30px; height: 30px; }

/* Hamburger */
.nav-toggle { display: none; width: 30px; height: 22px; position: relative; }
.nav-toggle span {
  position: absolute; left: 0; height: 2px; width: 100%;
  background: var(--bone); border-radius: 2px;
  transition: transform var(--dur-ui) var(--ease-out-quint), opacity var(--dur-ui);
}
.nav-toggle span:nth-child(1) { top: 3px; }
.nav-toggle span:nth-child(2) { top: 10px; }
.nav-toggle span:nth-child(3) { top: 17px; }
body.menu-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
body.menu-open .nav-toggle span:nth-child(2) { opacity: 0; }
body.menu-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile full-screen menu */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  background: var(--obsidian-deep);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--space-md);
  padding: var(--gutter);
  transform: translateY(-100%);
  visibility: hidden;
  transition: transform var(--dur-slow) var(--ease-out-expo), visibility var(--dur-slow);
}
body.menu-open .mobile-menu { transform: translateY(0); visibility: visible; }
.mobile-menu a {
  font-family: var(--font-display);
  font-size: clamp(2rem, 9vw, 3.5rem);
  text-transform: uppercase;
  color: var(--bone);
  line-height: 1.05;
  transition: color var(--dur-ui);
}
.mobile-menu a:hover, .mobile-menu a:focus-visible { color: var(--vermelho-bright); }
.mobile-menu .menu-index { color: var(--vermelho); font-size: 0.9rem; margin-right: 0.8em; font-family: var(--font-text); }

@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  /* El selector de tema pasa al menú móvil: la barra se queda con
     marca, idioma y hamburguesa. */
  .nav .theme { display: none; }
}

/* ---------------- Scroll cue ---------------- */
.scroll-cue {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-size: var(--fs-label);
  letter-spacing: var(--track-label);
  text-transform: uppercase;
  color: var(--muted);
}
.scroll-cue .line {
  display: inline-block;
  width: 44px; height: 1px;
  background: var(--vermelho);
  transform-origin: left;
  animation: cue 2.4s var(--ease-in-out) infinite;
}
@keyframes cue {
  0%, 100% { transform: scaleX(0.3); opacity: 0.4; }
  50% { transform: scaleX(1); opacity: 1; }
}

/* ---------------- Footer ---------------- */
.footer {
  background: var(--obsidian-deep);
  border-top: 1px solid var(--hairline-soft);
  padding-block: var(--space-2xl) var(--space-xl);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: var(--space-xl);
  align-items: start;
}
.footer .brand-lg {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 4rem);
  text-transform: uppercase;
  line-height: 0.92;
  color: var(--bone);
}
.footer-col h4 { font-size: var(--fs-label); letter-spacing: var(--track-label); color: var(--muted); margin-bottom: var(--space-md); font-family: var(--font-text); text-transform: uppercase; }
.footer-col a, .footer-col p { color: var(--bone-dim); font-size: var(--fs-sm); display: block; margin-bottom: 0.5em; }
.footer-col a:hover { color: var(--vermelho-bright); }
.footer-bottom {
  display: flex; flex-wrap: wrap; gap: var(--space-md);
  justify-content: space-between; align-items: center;
  margin-top: var(--space-2xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--hairline-soft);
  color: var(--muted); font-size: var(--fs-sm);
}
@media (max-width: 760px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--space-lg); }
  .footer .brand-lg { grid-column: 1 / -1; }
}