/* Header dropdowns (Servicios / Cómo funciona / Empresa). Desktop: floating panels. Up to 1100px: accordions in the drawer.
   Motion is opacity + translate only; reduced motion shows the state change without movement. */
.nav__dd { position: relative; }
.nav__dd--wide { position: static; }


.nav__dd-btn {
  display: inline-flex; align-items: center; gap: 0.5em; padding: 0.55em 0.95em; border: 0; border-radius: 999px;
  background: transparent; color: inherit; cursor: pointer; white-space: nowrap;
  font: 500 var(--fs--1)/1.2 var(--font-body);
  transition: background-color var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}
.nav__dd-btn::after {
  content: ""; width: 0.42em; height: 0.42em; margin-top: -0.2em; border: solid currentColor; border-width: 0 1.6px 1.6px 0;
  transform: rotate(45deg); transition: transform var(--dur-fast) var(--ease-out);
}
.nav__dd-btn:hover, .nav__dd-btn[aria-expanded="true"] { color: var(--c-thread); }
.nav__dd-btn[aria-expanded="true"]::after { transform: translateY(0.18em) rotate(-135deg); }
.nav__dd-btn:focus-visible, .nav__links .nav__panel a:focus-visible { outline: 2px solid var(--c-thread); outline-offset: 2px; }
.nav__dd.is-current > .nav__dd-btn { background: var(--c-dominant); color: var(--c-accent); }

.nav__links .nav__panel a { display: block; border-radius: 10px; white-space: normal; text-decoration: none; }
.nav__links .nav__panel a[aria-current="page"], .nav__links .nav__panel a[aria-current="true"] { background: var(--c-dominant); color: var(--c-accent); }
.nav__panel ul { display: grid; gap: 0.1rem; }
.nav__grp-h {
  margin: 0 0 0.35rem; padding-inline: 0.8em; font-size: 0.72rem; font-weight: 600; letter-spacing: var(--track-label);
  text-transform: uppercase; color: var(--c-thread);
}

@media (min-width: 1101px) {
  .nav__menu { position: relative; }
  .nav__panel {
    position: absolute; top: calc(100% + 0.6rem); left: 0; z-index: 2; min-width: 15rem; padding: 0.6rem;
    background: var(--c-bg); border-radius: 18px; box-shadow: 0 0 0 var(--border) var(--c-text), 0 28px 44px -26px var(--c-shadow);
    opacity: 0; visibility: hidden; transform: translateY(8px);
    transition: opacity var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out), visibility 0s linear var(--dur-fast);
  }
  .nav__panel::before { content: ""; position: absolute; inset: -0.8rem 0 auto; height: 0.8rem; } /* hover bridge */
  .nav__dd.is-open > .nav__panel {
    opacity: 1; visibility: visible; transform: none;
    transition: opacity var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out), visibility 0s;
  }
  .nav__links .nav__panel a { padding: 0.5em 0.8em; font-size: var(--fs--1); font-weight: 500; }
  .nav__links .nav__panel a:hover { background: var(--c-line); color: var(--c-text); }
  .nav__dd--wide > .nav__panel {
    left: 50%; translate: -50% 0; width: min(46rem, calc(100vw - 2 * var(--gutter)));
    display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0.5rem 1rem; padding: 0.9rem;
  }
  .nav__links .nav__panel-all { grid-column: 1 / -1; display: flex; align-items: center; justify-content: space-between; font-weight: 600; background: var(--c-line); }
  .nav__links .nav__panel-all::after { content: "→"; color: var(--c-thread); }
  .nav__dd:has(#nav-dd-empresa) > .nav__panel { left: auto; right: 0; }
}

@media (max-width: 1100px) {
  .nav__menu { max-height: calc(100dvh - 5.5rem); overflow-y: auto; overscroll-behavior: contain; }
  .nav__dd, .nav__dd--wide { position: static; }
  .nav__dd-btn { width: 100%; justify-content: space-between; padding: 0.9em 1em; border-radius: 12px; text-align: left; }
  .nav__dd-btn::after { margin-top: -0.25em; }
  .nav__dd-btn[aria-expanded="true"] { background: var(--c-line); color: var(--c-text); }
  .nav__panel { display: none; padding: 0.2rem 0 0.6rem 0.9rem; }
  .nav__dd.is-open > .nav__panel { display: block; animation: nav-acc-in var(--dur-fast) var(--ease-out); }
  .nav__links .nav__panel a { padding: 0.75em 1em; font-size: var(--fs--1); font-weight: 500; }
  .nav__links .nav__panel a:hover { color: var(--c-thread); }
  .nav__grp + .nav__grp { margin-top: 0.5rem; }
  .nav__links .nav__panel-all { margin-bottom: 0.4rem; font-weight: 600; text-decoration: underline; text-underline-offset: 0.25em; text-decoration-thickness: 1.5px; }
}
@keyframes nav-acc-in { from { opacity: 0; } to { opacity: 1; } }

@media (prefers-reduced-motion: reduce) {
  .nav__panel, .nav__dd.is-open > .nav__panel { transition: none; transform: none; animation: none; }
  .nav__dd-btn, .nav__dd-btn::after { transition: none; }
}