/* ==========================================================================
   Cooperación Bolivia — Header & Footer
   ========================================================================== */

/* ----------------------------------------------------------------------
   HEADER / NAVEGACIÓN
   ---------------------------------------------------------------------- */
.cb-header {
  position: sticky; top: 0; z-index: var(--cb-z-header);
  background: rgba(255,255,255,0.82);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: background var(--cb-dur) var(--cb-ease),
              border-color var(--cb-dur) var(--cb-ease),
              box-shadow var(--cb-dur) var(--cb-ease);
}
.cb-header.is-scrolled {
  background: rgba(255,255,255,0.95);
  border-bottom-color: var(--cb-line);
  box-shadow: var(--cb-shadow-sm);
}
.cb-header__inner {
  display: flex; align-items: center; justify-content: space-between; gap: var(--cb-sp-5);
  min-height: 72px;
}
.cb-logo { display: inline-flex; align-items: center; }
.cb-logo img { height: 52px; width: auto; }
@media (min-width: 1024px) { .cb-logo img { height: 60px; } }

.cb-nav { display: flex; align-items: center; gap: var(--cb-sp-5); }
.cb-nav__list { display: flex; align-items: center; gap: var(--cb-sp-2); }
.cb-nav__link {
  position: relative;
  font-family: var(--cb-font-head); font-weight: 700;
  font-size: 0.98rem; color: var(--cb-ink);
  padding: 0.5em 0.8em; border-radius: var(--cb-radius-sm);
}
.cb-nav__link::after {
  content: ""; position: absolute; left: 0.8em; right: 0.8em; bottom: 0.25em;
  height: 2px; background: var(--cb-grad-brand); border-radius: 2px;
  transform: scaleX(0); transform-origin: left;
  transition: transform var(--cb-dur) var(--cb-ease);
}
.cb-nav__link:hover, .cb-nav__link.is-active { color: var(--cb-primary); }
.cb-nav__link:hover::after, .cb-nav__link.is-active::after { transform: scaleX(1); }

/* Dropdown */
.cb-nav__item { position: relative; }
.cb-nav__item.has-sub > .cb-nav__link {
  display: inline-flex; align-items: center; gap: 0.5em;
}
.cb-nav__caret {
  display: inline-block; width: 0.42em; height: 0.42em;
  border-right: 2px solid currentColor; border-bottom: 2px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
  transition: transform var(--cb-dur) var(--cb-ease);
  flex: none;
}
.cb-nav__sub {
  position: absolute; top: calc(100% + 10px); left: 0;
  min-width: 260px;
  background: #fff; border: 1px solid var(--cb-line);
  border-radius: var(--cb-radius); box-shadow: var(--cb-shadow-lg);
  padding: var(--cb-sp-3);
  opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: opacity var(--cb-dur) var(--cb-ease), transform var(--cb-dur) var(--cb-ease), visibility var(--cb-dur);
}
.cb-nav__sub::before {
  content: ""; position: absolute; top: -16px; left: 0; right: 0; height: 16px;
}
.cb-nav__item.has-sub:hover .cb-nav__sub,
.cb-nav__item.has-sub:focus-within .cb-nav__sub {
  opacity: 1; visibility: visible; transform: translateY(0);
}
.cb-nav__item.has-sub:hover > .cb-nav__link .cb-nav__caret { transform: rotate(-135deg) translateY(2px); }
.cb-nav__sub a {
  display: block; padding: 0.6em 0.8em; border-radius: var(--cb-radius-sm);
  font-weight: 600; color: var(--cb-ink); font-size: 0.95rem;
  transition: background var(--cb-dur-fast) var(--cb-ease), color var(--cb-dur-fast) var(--cb-ease);
}
.cb-nav__sub a:hover { background: var(--cb-secondary-050); color: var(--cb-primary); }

.cb-header__cta { display: flex; align-items: center; gap: var(--cb-sp-3); }

/* Botón hamburguesa */
.cb-burger {
  display: none;
  width: 46px; height: 46px; border: 1px solid var(--cb-line); border-radius: var(--cb-radius-sm);
  background: #fff; cursor: pointer; place-items: center;
}
.cb-burger span, .cb-burger span::before, .cb-burger span::after {
  content: ""; display: block; width: 22px; height: 2px; background: var(--cb-ink);
  border-radius: 2px; transition: transform var(--cb-dur) var(--cb-ease), opacity var(--cb-dur) var(--cb-ease);
}
.cb-burger span::before { transform: translateY(-7px); }
.cb-burger span::after { transform: translateY(5px); }
.cb-burger[aria-expanded="true"] span { background: transparent; }
.cb-burger[aria-expanded="true"] span::before { transform: translateY(0) rotate(45deg); }
.cb-burger[aria-expanded="true"] span::after { transform: translateY(-2px) rotate(-45deg); }

/* ---- Responsive nav ---- */
@media (max-width: 1023px) {
  .cb-burger { display: grid; }
  .cb-nav {
    position: fixed; inset: 72px 0 auto 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--cb-line);
    padding: var(--cb-sp-4) var(--cb-gutter) var(--cb-sp-6);
    box-shadow: var(--cb-shadow-lg);
    transform: translateY(-130%);
    transition: transform var(--cb-dur) var(--cb-ease-out);
    max-height: calc(100vh - 72px); overflow-y: auto;
  }
  .cb-nav.is-open { transform: translateY(0); }
  .cb-nav__list { flex-direction: column; align-items: stretch; gap: 0; }
  .cb-nav__link { padding: 0.9em 0.5em; font-size: 1.1rem; border-bottom: 1px solid var(--cb-line); border-radius: 0; }
  .cb-nav__link::after { display: none; }
  .cb-nav__item.has-sub > .cb-nav__link { justify-content: space-between; }
  .cb-nav__sub {
    position: static; opacity: 1; visibility: visible; transform: none;
    box-shadow: none; border: 0; border-radius: 0; padding: 0 0 var(--cb-sp-3) var(--cb-sp-4);
    min-width: 0; max-height: 0; overflow: hidden;
    transition: max-height var(--cb-dur) var(--cb-ease);
  }
  .cb-nav__item.has-sub.is-open .cb-nav__sub { max-height: 400px; }
  .cb-header__cta .cb-btn { display: none; }
}

/* ----------------------------------------------------------------------
   FOOTER
   ---------------------------------------------------------------------- */
.cb-footer {
  background: #0f3550;
  color: rgba(255,255,255,0.82);
  padding-block: var(--cb-sp-8) var(--cb-sp-5);
}
.cb-footer a { color: rgba(255,255,255,0.82); }
.cb-footer a:hover { color: #fff; }
.cb-footer__grid {
  display: grid; gap: var(--cb-sp-7);
  grid-template-columns: 1fr;
}
@media (min-width: 680px) { .cb-footer__grid { grid-template-columns: 1.6fr 1fr 1fr; } }
@media (min-width: 980px) { .cb-footer__grid { grid-template-columns: 1.8fr 1fr 1fr 1.2fr; } }

.cb-footer__brand .logo-mark { display: flex; align-items: center; margin-bottom: var(--cb-sp-5); }
.cb-footer__brand .logo-mark img { height: 60px; width: auto; }
.cb-footer__brand p { color: rgba(255,255,255,0.7); font-size: var(--cb-fs-sm); max-width: 34ch; }

.cb-footer h4 { color: #fff; font-size: 0.85rem; letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: var(--cb-sp-4); }
.cb-footer__links li { margin-bottom: var(--cb-sp-2); }
.cb-footer__links a { font-size: var(--cb-fs-sm); }

.cb-footer__contact li { display: flex; gap: var(--cb-sp-3); margin-bottom: var(--cb-sp-3); font-size: var(--cb-fs-sm); align-items: flex-start; }
.cb-footer__contact svg { width: 18px; height: 18px; flex: none; margin-top: 3px; color: var(--cb-secondary); }

.cb-social { display: flex; gap: var(--cb-sp-3); margin-top: var(--cb-sp-4); }
.cb-social a {
  width: 40px; height: 40px; border-radius: 50%;
  background: rgba(255,255,255,0.08); display: grid; place-items: center;
  transition: background var(--cb-dur) var(--cb-ease), transform var(--cb-dur) var(--cb-ease);
}
.cb-social a:hover { background: var(--cb-secondary); transform: translateY(-3px); }
.cb-social svg { width: 20px; height: 20px; }

.cb-footer__bottom {
  margin-top: var(--cb-sp-7); padding-top: var(--cb-sp-5);
  border-top: 1px solid rgba(255,255,255,0.12);
  display: flex; flex-wrap: wrap; gap: var(--cb-sp-4); justify-content: space-between; align-items: center;
  font-size: var(--cb-fs-xs); color: rgba(255,255,255,0.6);
}
.cb-footer__bottom nav { display: flex; flex-wrap: wrap; gap: var(--cb-sp-4); }