/* ===== BURGER MENU + MOBILE NAV v7.1 ===== */

/* ── Header ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: var(--color-surface-1, #0a0a0a);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  width: 100%;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.25rem;
  height: 64px;
  max-width: 1280px;
  margin: 0 auto;
  position: relative;
}

/* ── Logo ── */
.logo-link {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
  z-index: 201;
}

.logo-wordmark {
  height: 40px;
  width: auto;
  display: block;
}

/* ══════════════════════════════════
   BURGER BUTTON
══════════════════════════════════ */
.menu-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 201;
  flex-shrink: 0;
  border-radius: 8px;
  -webkit-tap-highlight-color: transparent;
  transition: background 0.2s;
}

.menu-btn:hover,
.menu-btn:focus-visible {
  background: rgba(255, 255, 255, 0.06);
  outline: none;
}

.burger-bar {
  display: block;
  width: 22px;
  height: 2px;
  background: #ffffff;
  border-radius: 2px;
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1),
              opacity 0.25s cubic-bezier(0.4, 0, 0.2, 1),
              width 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  transform-origin: center;
  pointer-events: none;
}

/* Burger → X */
.menu-btn[aria-expanded="true"] .bar-top {
  transform: translateY(7px) rotate(45deg);
}
.menu-btn[aria-expanded="true"] .bar-mid {
  opacity: 0;
  transform: scaleX(0);
}
.menu-btn[aria-expanded="true"] .bar-bot {
  transform: translateY(-7px) rotate(-45deg);
}

/* ══════════════════════════════════
   DESKTOP NAV
══════════════════════════════════ */
.desktop-nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-item.dropdown {
  position: relative;
}

.nav-trigger {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  transition: color 0.2s, background 0.2s;
  -webkit-tap-highlight-color: transparent;
  white-space: nowrap;
}

.nav-trigger:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.05);
}

.nav-trigger .caret {
  transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  flex-shrink: 0;
}

.nav-trigger[aria-expanded="true"] .caret {
  transform: rotate(180deg);
}

/* Desktop submenu */
.desktop-submenu {
  display: none;
  position: absolute;
  top: calc(100% + 0.5rem);
  left: 0;
  min-width: 200px;
  background: #1a1a1a;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  padding: 0.5rem;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
  z-index: 300;
}

.desktop-submenu.open {
  display: block;
  animation: fadeSlideDown 0.2s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.desktop-submenu a {
  display: block;
  padding: 0.65rem 0.9rem;
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  border-radius: 8px;
  font-size: 0.9rem;
  transition: color 0.15s, background 0.15s;
}

.desktop-submenu a:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.07);
}

@keyframes fadeSlideDown {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ══════════════════════════════════
   MOBILE NAV
══════════════════════════════════ */
.mobile-nav {
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-surface-1, #0a0a0a);
  overflow-y: auto;
  overflow-x: hidden;
  padding: 1.5rem 1.25rem;
  z-index: 199;
  visibility: hidden;
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1),
              visibility 0.35s;
  -webkit-overflow-scrolling: touch;
}

.mobile-nav.open {
  transform: translateX(0);
  visibility: visible;
}

/* Backdrop */
.nav-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  z-index: 198;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s, visibility 0.35s;
}

.nav-backdrop.open {
  opacity: 1;
  visibility: visible;
}

/* ── Accordion ── */
.mobile-nav-item {
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.accordion-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  background: none;
  border: none;
  color: #ffffff;
  font-size: 1.1rem;
  font-weight: 600;
  padding: 1.1rem 0;
  cursor: pointer;
  text-align: left;
  -webkit-tap-highlight-color: transparent;
}

.accordion-trigger .caret {
  flex-shrink: 0;
  color: rgba(255, 255, 255, 0.5);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.accordion-trigger[aria-expanded="true"] .caret {
  transform: rotate(180deg);
}

/* ── Accordion panel — grid trick requires inner wrapper ── */
.accordion-panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.32s cubic-bezier(0.4, 0, 0.2, 1);
}

.accordion-panel.open {
  grid-template-rows: 1fr;
}

/* This inner div is REQUIRED — the grid trick needs overflow:hidden on a child */
.accordion-panel-inner {
  overflow: hidden;
  min-height: 0;
}

.mobile-link {
  display: block;
  padding: 0.8rem 0 0.8rem 1rem;
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 400;
  border-left: 2px solid rgba(139, 92, 246, 0.35);
  margin-bottom: 0.2rem;
  transition: color 0.15s, border-color 0.15s, padding-left 0.15s;
}

.mobile-link:last-child {
  margin-bottom: 1rem;
}

.mobile-link:hover,
.mobile-link:active {
  color: #ffffff;
  border-left-color: #8B5CF6;
  padding-left: 1.25rem;
}

/* Divider */
.mobile-nav-divider {
  border: none;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  margin: 1.25rem 0;
}

/* Mobile auth + install buttons */
.mobile-auth-btn {
  display: block;
  width: 100%;
  text-align: center;
  margin-bottom: 0.85rem;
  padding: 0.95rem;
  font-size: 1rem;
  border-radius: 9999px;
}
 
/* ══════════════════════════════════
   BREAKPOINTS
══════════════════════════════════ */
@media (max-width: 768px) {
  .menu-btn {
    display: flex;
  }
  .desktop-nav {
    display: none;
  }
}

@media (min-width: 769px) {
  .menu-btn {
    display: none;
  }
  .desktop-nav {
    display: flex;
  }
  .mobile-nav,
  .nav-backdrop {
    display: none !important;
  }
}

/* iOS safe area */
@supports (padding-bottom: env(safe-area-inset-bottom)) {
  .mobile-nav {
    padding-bottom: calc(2rem + env(safe-area-inset-bottom));
  }
}