/* ── SITE TOPBAR (global, fijo en mobile y desktop) ── */
:root {
  --site-topbar-h: 64px;
}
html {
  scroll-padding-top: var(--site-topbar-h);
}
body {
  padding-top: calc(var(--site-topbar-h) + 3px);
}

.site-topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid #e5e9e2;
  box-shadow: 0 1px 6px rgba(0,0,0,0.06);
}

.site-topbar__accent {
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, var(--color-accent) 100%);
}

.site-topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  gap: 1.25rem;
}

/* Marca */
.site-topbar__brand {
  font-size: 1.15rem;
  font-weight: 700;
  color: #111827;
  text-decoration: none;
  letter-spacing: -.02em;
  flex-shrink: 0;
}
.site-topbar__brand strong { color: var(--color-accent); }

/* Nav desktop */
.site-topbar__nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.site-topbar__link {
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 500;
  color: #4b5563;
  text-decoration: none;
  transition: color .15s, background .15s;
  border-bottom: 2px solid transparent;
}

.site-topbar__link:hover {
  color: var(--color-accent);
  background: var(--accent-10);
}

.site-topbar__link.active {
  color: var(--color-accent);
  font-weight: 600;
  background: var(--accent-10);
}

/* Búsqueda header (MenuRadar-style) */
.site-topbar__search {
  flex: 1;
  max-width: 320px;
  align-items: center;
  gap: 0.5rem;
  margin-left: auto;
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  border: 1px solid #e2e8f0;
  background: #f8fafc;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.site-topbar__search:focus-within {
  border-color: var(--accent-40);
  box-shadow: 0 0 0 3px var(--accent-20);
  background: #fff;
}

.site-topbar__search-icon {
  color: #94a3b8;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.site-topbar__search-input {
  flex: 1;
  min-width: 0;
  border: 0;
  background: transparent;
  outline: none;
  font-size: 0.875rem;
  color: #111827;
}

.site-topbar__search-input::placeholder {
  color: #94a3b8;
}

.site-topbar__search-toggle {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border: 1px solid #e5e9e2;
  border-radius: 10px;
  background: transparent;
  color: #475569;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.site-topbar__search-toggle:hover,
.site-topbar__search-toggle.open {
  color: var(--color-accent);
  border-color: var(--accent-30);
  background: var(--accent-10);
}

.site-topbar__search-panel {
  border-top: 1px solid #f0f2ef;
  background: #fff;
  padding: 0.65rem 0 0.85rem;
  box-shadow: 0 12px 24px rgba(15, 23, 42, 0.08);
}

.site-topbar__search-panel[hidden] {
  display: none !important;
}

.site-topbar__search-mobile {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.5rem 0.35rem 0.85rem;
  border-radius: 999px;
  border: 1px solid #e2e8f0;
  background: #f8fafc;
}

.site-topbar__search-mobile .site-topbar__search-input {
  flex: 1;
}

.site-topbar__search-submit {
  flex-shrink: 0;
  border: 0;
  border-radius: 999px;
  padding: 0.45rem 0.85rem;
  font-size: 0.75rem;
  font-weight: 700;
  color: #fff;
  background: var(--gradient-primary);
  box-shadow: var(--shadow-accent-sm);
  cursor: pointer;
}

/* Derecha */
.site-topbar__right {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-shrink: 0;
}

/* Hamburguesa */
.site-topbar__burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: transparent;
  border: 1px solid #e5e9e2;
  border-radius: 8px;
  cursor: pointer;
  padding: 0;
  transition: border-color .15s, background .15s;
}

.site-topbar__burger span {
  display: block;
  width: 18px;
  height: 2px;
  background: #374151;
  border-radius: 2px;
  transition: transform .25s, opacity .25s;
}

.site-topbar__burger:hover {
  border-color: var(--color-accent);
  background: var(--accent-10);
}

.site-topbar__burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.site-topbar__burger.open span:nth-child(2) { opacity: 0; }
.site-topbar__burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Menú mobile */
.site-topbar__mobile-menu {
  display: none;
  flex-direction: column;
  border-top: 1px solid #f0f2ef;
  background: #fff;
  padding: 0.35rem 0 0.65rem;
  box-shadow: 0 12px 24px rgba(15,23,42,0.08);
}

.site-topbar__mobile-menu.open {
  display: flex;
}

.site-topbar__mobile-link {
  padding: 0.7rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: #374151;
  text-decoration: none;
  transition: color .15s, background .15s;
}

.site-topbar__mobile-link:hover,
.site-topbar__mobile-link.active {
  color: var(--color-accent);
  background: var(--accent-10);
}

/* Idioma */
.site-lang-switcher {
  display: inline-flex;
  align-items: center;
  padding: 3px;
  gap: 2px;
  border: 1px solid #d8eeea;
  border-radius: 999px;
  background: #f8fbfa;
}

.site-lang-switcher__form {
  display: inline-flex;
  margin: 0;
}

.site-lang-switcher__btn {
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: #5b6b67;
  font-size: 0.72rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0.04em;
  padding: 0.42rem 0.5rem;
  min-width: 34px;
  transition: background .15s, color .15s, box-shadow .15s;
}

.site-lang-switcher__btn:hover {
  color: var(--color-accent);
}

.site-lang-switcher__btn.active {
  color: #fff;
  background: var(--gradient-primary);
  box-shadow: var(--shadow-accent-sm);
}

/* Responsive */
@media (max-width: 767px) {
  :root {
    --site-topbar-h: 56px;
  }
  .site-topbar__inner {
    min-height: 56px;
    gap: 0.55rem;
    justify-content: flex-start;
  }
  .site-topbar__brand {
    font-size: 1.05rem;
    margin-right: auto;
  }
  .site-topbar__right {
    gap: 0.45rem;
  }
  .site-lang-switcher {
    padding: 2px;
  }
  .site-lang-switcher__btn {
    min-width: 31px;
    padding: 0.38rem 0.42rem;
    font-size: 0.68rem;
  }
  .site-topbar__nav { display: none; }
  .site-topbar__burger { display: flex; }
  .site-topbar__right { margin-left: auto; }
}
@media (min-width: 768px) {
  .site-topbar__mobile-menu { display: none !important; }
}