/* Cabecera compartida: sus medidas son iguales en todas las páginas. */

:root { --site-header-height: 80px; }

.site-header {
  height: var(--site-header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  position: relative;
  z-index: auto;
}

.brand {
  display: block;
  position: relative;
  width: 300px;
  aspect-ratio: 678 / 156;
  overflow: hidden;
  flex-shrink: 0;
  z-index: 4;
  mix-blend-mode: lighten;
}

.brand-image {
  display: block;
  width: 100%;
  height: auto;
}

.main-nav {
  position: relative;
  z-index: 4;
  display: flex;
  align-items: center;
  gap: 33px;
  margin-left: auto;
  margin-right: auto;
}

.main-nav a {
  position: relative;
  background: none;
  padding: 18px 0;
  font-size: 15px;
  font-weight: 500;
  color: #b7c2d0;
  white-space: nowrap;
  transition: color .2s;
}

.main-nav .active,.main-nav a:hover {
  color: #a2fce7;
}

.main-nav .active:after {
  content: '';
  height: 2px;
  position: absolute;
  bottom: 4px;
  left: 0;
  right: 0;
  background: var(--mint);
  border-radius: 8px;
}

.header-actions {
  position: relative;
  z-index: 4;
  display: flex;
  gap: 32px;
  align-items: center;
}

.language-picker {
  position: relative;
}

.language-toggle {
  height: 46px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 14px;
  color: var(--text);
  background: transparent;
  border: 1px solid #18252c;
  border-radius: 18px;
  transition: border-color .2s, background .2s;
}

.language-toggle:hover,
.language-toggle[aria-expanded="true"] {
  border-color: #27413f;
  background: #0d171c;
}

/* The ring sits on the whole control, not on a tiny inner box. */
.language-toggle:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 3px;
}

.language-toggle .icon {
  width: 19px;
  height: 19px;
}

.language-toggle .chevron {
  width: 14px;
  height: 14px;
  transition: transform .2s;
}

.language-toggle[aria-expanded="true"] .chevron {
  transform: rotate(180deg);
}

.language-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  z-index: 6;
  min-width: 100%;
  margin: 0;
  padding: 6px;
  list-style: none;
  background: #0b151af7;
  border: 1px solid #27413f;
  border-radius: 14px;
  box-shadow: 0 16px 36px #0007;
  backdrop-filter: blur(16px);
}

.language-menu[hidden] {
  display: none;
}

.language-menu button {
  width: 100%;
  padding: 10px 14px;
  text-align: left;
  white-space: nowrap;
  color: #b7c2d0;
  background: transparent;
  border-radius: 9px;
  font-size: 14px;
}

.language-menu button:hover {
  color: var(--text);
  background: #13222a;
}

.language-menu button.active {
  color: #a2fce7;
}

.language-menu button:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: -2px;
}

.menu-toggle {
  display: none;
}

@media(max-width:1390px) {
  .main-nav {
    gap: 22px;
  }

  .header-actions {
    gap: 18px;
  }

  .brand {
    width: 280px;
  }
}

@media(max-width:1100px) {
  .brand { width: 260px; }
  .main-nav {
    gap: 16px;
  }

  .main-nav a {
    font-size: 13px;
  }

  .header-actions {
    gap: 12px;
  }
}

@media(max-width:900px) {
  .site-header {
    height: var(--site-header-height);
  }

  .brand {
    width: 290px;
  }

  .menu-toggle {
    display: grid;
  }

  .main-nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 70px;
    margin: 0;
    padding: 18px;
    background: #101b20f5;
    backdrop-filter: blur(20px);
    border: 1px solid #28463f;
    border-radius: 16px;
    box-shadow: 0 20px 40px #0006;
  }

  .main-nav.open {
    display: grid;
    grid-template-columns: repeat(3,1fr);
    gap: 10px;
  }

  .main-nav a {
    font-size: 14px;
    text-align: center;
    padding: 12px 0;
  }

  .main-nav .active:after {
    left: 25%;
    right: 25%;
    bottom: 3px;
  }

  .language-toggle {
    height: 41px;
    padding: 0 10px;
    border-radius: 15px;
  }
}

@media(max-width:480px) {
  .site-header {
    gap: 12px;
  }

  .brand {
    width: clamp(155px, 52vw, 210px);
  }

  .header-actions {
    gap: 8px;
  }

  .language-toggle {
    padding: 0 8px;
    gap: 5px;
    font-size: 12px;
  }

  .language-toggle > .icon:first-child {
    display: none;
  }

  .language-toggle .chevron {
    width: 12px;
    height: 12px;
  }
}

@media (max-width: 900px) {
  :root { --site-header-height: 76px; }
}