/* MailApp sidebar layout & drawer behavior */

.menu-toggle-btn {
  display: none;
  place-items: center;
  width: 42px;
  height: 42px;
  flex-shrink: 0;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.14), rgba(99, 102, 241, 0.08));
  border: 1px solid rgba(139, 92, 246, 0.22);
  color: #ddd6fe;
  box-shadow: 0 4px 16px rgba(139, 92, 246, 0.12);
  cursor: pointer;
  padding: 0;
  font: inherit;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  position: relative;
  z-index: 2;
}

.menu-toggle-btn svg,
.menu-toggle-btn .icon,
.sidebar-close-btn svg,
.sidebar-close-btn .icon {
  pointer-events: none;
}

.sidebar-close-btn {
  margin-left: auto;
  display: none;
  place-items: center;
  cursor: pointer;
  min-width: 44px;
  min-height: 44px;
  flex-shrink: 0;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

/* Backdrop: behind sidebar, above main content */
#sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: rgba(2, 4, 10, 0.72);
  border: none;
  padding: 0;
  margin: 0;
  cursor: pointer;
}

/* ── Desktop: sidebar always visible ── */
@media (min-width: 1201px) {
  #app-sidebar {
    position: sticky;
    top: 0;
    width: var(--sidebar-w, 260px);
    height: 100vh;
    flex-shrink: 0;
    z-index: 10;
    transform: none !important;
  }

  .menu-toggle-btn,
  .sidebar-close-btn,
  #sidebar-overlay {
    display: none !important;
  }
}

/* ── Mobile / tablet: off-canvas drawer ── */
@media (max-width: 1200px) {
  .menu-toggle-btn {
    display: inline-grid !important;
  }

  .sidebar-close-btn {
    display: inline-grid !important;
  }

  #app-sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: min(300px, 88vw);
    max-width: 88vw;
    height: 100vh;
    height: 100dvh;
    z-index: 10010;
    transform: translateX(-105%);
    transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 12px 0 48px rgba(0, 0, 0, 0.55);
    isolation: isolate;
  }

  html[data-nav="open"] #app-sidebar {
    transform: translateX(0);
  }

  html[data-nav="open"] #sidebar-overlay {
    display: block;
  }

  html[data-nav="open"] {
    overflow: hidden;
  }

  .topbar {
    padding: 16px 20px;
    z-index: 10005;
  }

  .main {
    position: relative;
    z-index: 1;
  }
}