/* ─────────────────────────────────────────────────────────────
   PTL Nav · Nav fixed + mega-menu dropdown + mobile drawer
   Requiere: ptl-tokens.css cargado antes.
   Markup esperado:
     <nav class="ptl-nav">
       <div class="ptl-nav-inner">
         <a class="ptl-nav-logo" href="/">BRAND <span class="dot"></span></a>
         <button class="ptl-nav-toggle" aria-label="Menu"></button>
         <div class="ptl-nav-links">
           <a href="/about">About</a>
           <div class="ptl-nav-has-menu">
             <button class="ptl-nav-menu-btn">Products ▾</button>
             <div class="ptl-mega">
               <a href="/x">...</a>
             </div>
           </div>
           <a class="ptl-nav-ext" href="https://other.com">Cross Link →</a>
           <a class="ptl-nav-cta" href="/cta">CTA →</a>
         </div>
       </div>
     </nav>
   Build: 2026-05-13-ptl-nav-v2 (mobile hamburger fix)
   ───────────────────────────────────────────────────────────── */

.ptl-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--ptl-z-nav);
  background: rgba(251, 251, 253, 0.96);
  border-bottom: 1px solid rgba(0, 0, 0, 0.07);
  height: var(--ptl-nav-h);
  display: flex;
  align-items: center;
}

.ptl-nav-inner {
  max-width: var(--ptl-max);
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--ptl-pad-x);
  display: flex;
  align-items: center;
  gap: 2rem;
}

.ptl-nav-logo {
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--ptl-text);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}
.ptl-nav-logo .dot {
  width: 7px;
  height: 7px;
  background: var(--ptl-orange);
  border-radius: 50%;
  display: inline-block;
}

.ptl-nav-links {
  display: flex;
  align-items: center;
  gap: 0.1rem;
  margin-left: auto;
  flex-wrap: nowrap;
}

.ptl-nav-links > a,
.ptl-nav-menu-btn {
  font-size: 13px;
  font-weight: 500;
  color: var(--ptl-muted);
  text-decoration: none;
  padding: 6px 12px;
  border-radius: var(--ptl-r-sm);
  transition: color var(--ptl-t-fast), background var(--ptl-t-fast);
  white-space: nowrap;
  background: transparent;
  border: 0;
  cursor: pointer;
  font-family: inherit;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
/* Hover SOLO en devices con puntero fino (evita sticky-hover en touch) */
@media (hover: hover) and (pointer: fine) {
  .ptl-nav-links > a:hover,
  .ptl-nav-menu-btn:hover,
  .ptl-nav-has-menu:hover .ptl-nav-menu-btn {
    color: var(--ptl-text);
    background: rgba(0, 0, 0, 0.04);
  }
}

.ptl-nav-links > a.active,
.ptl-nav-drawer a.active,
.ptl-nav-menu-btn.active {
  color: var(--ptl-orange) !important;
  background: none !important;
}

.ptl-nav-ext::after { content: ' →'; opacity: 0.6; }

.ptl-nav-cta {
  background: var(--ptl-orange) !important;
  color: #fff !important;
  padding: 8px 16px !important;
  border-radius: var(--ptl-r-cta) !important;
  font-weight: 600 !important;
  font-size: 13px !important;
  transition: opacity var(--ptl-t-fast) !important;
  margin-left: 0.5rem;
}
@media (hover: hover) and (pointer: fine) {
  .ptl-nav-cta:hover {
    opacity: 0.88;
    background: var(--ptl-orange) !important;
  }
}

/* ─── Mega-menu dropdown ─── */
.ptl-nav-has-menu {
  position: relative;
}
.ptl-mega {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  min-width: 260px;
  background: var(--ptl-surface-alt);
  border: 1px solid var(--ptl-border);
  border-radius: var(--ptl-r);
  padding: 0.75rem;
  box-shadow: var(--ptl-shadow-hover);
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--ptl-t-fast), transform var(--ptl-t-fast);
  z-index: calc(var(--ptl-z-nav) + 1);
}
/* Bridge invisible que cubre el gap entre trigger y dropdown
   para evitar que el hover se pierda al cruzarlo diagonalmente */
.ptl-mega::before {
  content: '';
  position: absolute;
  top: -12px;
  left: 0;
  right: 0;
  height: 14px;
  background: transparent;
}
/* Apertura del mega-menu: SOLO desktop. En mobile la apertura es JS-driven
   (.ptl-nav-has-menu.open) y debe permanecer estática para evitar transform-leak. */
@media (hover: hover) and (pointer: fine) {
  .ptl-nav-has-menu:hover .ptl-mega,
  .ptl-nav-has-menu:focus-within .ptl-mega {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
    pointer-events: auto;
  }
}
.ptl-mega a {
  font-size: 13px;
  color: var(--ptl-text-2);
  text-decoration: none;
  padding: 8px 12px;
  border-radius: var(--ptl-r-sm);
  transition: color var(--ptl-t-fast), background var(--ptl-t-fast);
  white-space: nowrap;
}
@media (hover: hover) and (pointer: fine) {
  .ptl-mega a:hover {
    color: var(--ptl-text);
    background: var(--ptl-surface);
  }
}
.ptl-mega a.featured {
  color: var(--ptl-orange);
  font-weight: 600;
}
.ptl-mega a.disabled {
  color: var(--ptl-muted);
  opacity: 0.55;
  pointer-events: none;
}

/* ─── Language pill (EN · ES · ZH) ───────────────────────── */
.ptl-nav-lang {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 3px;
  border: 1px solid var(--ptl-border);
  border-radius: var(--ptl-r-pill);
  background: var(--ptl-surface);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-left: 0.5rem;
}
.ptl-nav-lang a {
  color: var(--ptl-muted);
  text-decoration: none;
  padding: 3px 9px;
  border-radius: var(--ptl-r-pill);
  transition: color var(--ptl-t-fast), background var(--ptl-t-fast);
  line-height: 1;
}
@media (hover: hover) and (pointer: fine) {
  .ptl-nav-lang a:hover,
  .ptl-nav-lang a:focus-visible {
    color: var(--ptl-text);
  }
}
.ptl-nav-lang a[aria-current="true"] {
  color: var(--ptl-text);
  background: var(--ptl-surface-alt);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

/* ─── Mobile toggle (hamburger) ─── */
.ptl-nav-toggle {
  display: none;
  margin-left: auto;
  width: 44px;
  height: 44px;
  border-radius: var(--ptl-r-sm);
  border: 1px solid var(--ptl-border);
  background: var(--ptl-surface-alt);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-direction: column;
  gap: 4px;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}
.ptl-nav-toggle::before,
.ptl-nav-toggle::after,
.ptl-nav-toggle span {
  content: '';
  display: block;
  width: 16px;
  height: 1.5px;
  background: var(--ptl-text);
  border-radius: 1px;
  transition: transform var(--ptl-t-fast), opacity var(--ptl-t-fast);
  pointer-events: none; /* asegura que el click siempre llegue al <button> */
}
.ptl-nav-toggle[aria-expanded="true"]::before {
  transform: translateY(5.5px) rotate(45deg);
}
.ptl-nav-toggle[aria-expanded="true"] span {
  opacity: 0;
}
.ptl-nav-toggle[aria-expanded="true"]::after {
  transform: translateY(-5.5px) rotate(-45deg);
}

/* Caret rotation en mega-menu botón cuando se abre (mobile) */
.ptl-nav-menu-btn[aria-expanded="true"] span[aria-hidden="true"] {
  transform: rotate(180deg);
}
.ptl-nav-menu-btn span[aria-hidden="true"] {
  display: inline-block;
  transition: transform var(--ptl-t-fast);
}

/* ─── Mobile drawer ─── */
@media (max-width: 1024px) {
  .ptl-nav-toggle { display: inline-flex; }
  .ptl-nav-links {
    position: fixed;
    top: var(--ptl-nav-h);
    right: 0;
    width: min(360px, 85vw);
    height: calc(100vh - var(--ptl-nav-h));
    background: var(--ptl-surface-alt);
    border-left: 1px solid var(--ptl-border);
    padding: 1.5rem 1.25rem;
    flex-direction: column;
    align-items: stretch;
    gap: 0.25rem;
    margin-left: 0;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
    transform: translateX(100%);
    transition: transform var(--ptl-t-base) var(--ptl-ease-out);
    box-shadow: -20px 0 60px rgba(0, 0, 0, 0.08);
    z-index: var(--ptl-z-drawer);
  }
  .ptl-nav-links.open {
    transform: translateX(0);
  }
  .ptl-nav-links > a,
  .ptl-nav-menu-btn {
    font-size: 15px;
    padding: 12px 14px;
    min-height: 44px;
    border-radius: var(--ptl-r-sm);
    justify-content: space-between;
    width: 100%;
  }
  .ptl-nav-has-menu { width: 100%; }
  .ptl-nav-menu-btn {
    width: 100%;
    text-align: left;
  }
  /* Mobile mega-menu: estático, controlado por .open (JS).
     Override explícito de cualquier transform residual. */
  .ptl-mega,
  .ptl-nav-has-menu:hover .ptl-mega,
  .ptl-nav-has-menu:focus-within .ptl-mega {
    position: static;
    transform: none;
    opacity: 1;
    pointer-events: auto;
    box-shadow: none;
    border: 0;
    padding: 0 0 0.5rem 0.5rem;
    background: transparent;
    min-width: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--ptl-t-base) var(--ptl-ease);
  }
  .ptl-mega::before { display: none; }
  .ptl-nav-has-menu.open .ptl-mega {
    max-height: 600px;
  }
  .ptl-mega a {
    font-size: 14px;
    padding: 10px 12px;
    min-height: 44px;
    display: flex;
    align-items: center;
    white-space: normal;
  }
  .ptl-nav-cta {
    margin-top: 1rem;
    margin-left: 0;
    text-align: center;
    justify-content: center;
    padding: 12px 16px !important;
    font-size: 14px !important;
  }
  /* Language pill agrandado en mobile para tap targets ≥44pt */
  .ptl-nav-lang {
    margin: 1rem 0 0;
    align-self: flex-start;
    padding: 4px;
    font-size: 13px;
  }
  .ptl-nav-lang a {
    padding: 8px 14px;
    min-height: 36px;
    display: inline-flex;
    align-items: center;
  }
}

@media (min-width: 1025px) {
  .ptl-nav-toggle { display: none; }
}

/* ─── Backdrop para drawer ─── */
.ptl-nav-backdrop {
  display: none;
  position: fixed;
  inset: var(--ptl-nav-h) 0 0 0;
  background: rgba(0, 0, 0, 0.35);
  z-index: calc(var(--ptl-z-drawer) - 1);
  opacity: 0;
  transition: opacity var(--ptl-t-base);
}
.ptl-nav-backdrop.active {
  display: block;
  opacity: 1;
}

/* Evitar scroll de body cuando drawer está abierto */
body.ptl-drawer-open {
  overflow: hidden;
}

/* ─── Respeta prefers-reduced-motion ─────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .ptl-nav-links,
  .ptl-mega,
  .ptl-nav-toggle::before,
  .ptl-nav-toggle::after,
  .ptl-nav-toggle span,
  .ptl-nav-menu-btn span[aria-hidden="true"] {
    transition: none !important;
  }
}