/* QuickStand Navigation System
   - Public bottom nav (3 items)
   - Logged-in app bottom nav (5 tabs)
   - Desktop app sidebar (collapsed / expanded)
   Notes:
   - Uses qs- prefixed classes to avoid collisions.
*/

:root {
  /* QS Theme Layer */
  --qs-bg: #f0f7ff;
  --qs-card: #ffffff;
  --qs-text: #003366;
  --qs-muted: #667085;
  --qs-border: #e6e6e6;
  --qs-primary: #003366;
  --qs-primary-2: #0094FF;
  --qs-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
  --qs-radius: 16px;

  /* Navigation sizing */
  --qs-bottomnav-h: 64px;
  --qs-safe-bottom: env(safe-area-inset-bottom, 0px);
  --qs-header-h: 64px; /* updated by nav_state.js */

  /* Desktop app shell */
  --qs-sidebar-left: 12px;
  --qs-sidebar-top-gap: 12px;
  --qs-sidebar-bottom-gap: 12px;
  --qs-sidebar-width: 84px;
  --qs-sidebar-expanded-width: 236px;
  --qs-shell-offset: 0px;
}

html.qs-has-bottomnav body {
  padding-bottom: 0;
  overflow-x: hidden;
  overscroll-behavior-x: none;
}

html.qs-has-bottomnav.qs-has-public-bottomnav body,
html.qs-has-bottomnav.qs-has-app-bottomnav body {
  padding-bottom: calc(var(--qs-bottomnav-h) + max(8px, var(--qs-safe-bottom)) + 10px);
}

html.qs-has-app-bottomnav body {
  transition: padding-left 180ms ease, padding-bottom 180ms ease;
}

/* Bottom nav shared */
.qs-bottom-nav {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  height: calc(var(--qs-bottomnav-h) + max(8px, var(--qs-safe-bottom)));
  padding-inline: max(8px, env(safe-area-inset-left, 0px)) max(8px, env(safe-area-inset-right, 0px));
  padding-bottom: max(8px, var(--qs-safe-bottom));
  background: rgba(255, 255, 255, 0.98);
  border-top: 1px solid var(--qs-border);
  box-shadow: 0 -12px 28px rgba(0, 0, 0, 0.08);
  display: flex;
  align-items: stretch;
  justify-content: space-around;
  z-index: 1040;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transform: translate3d(0, 0, 0);
  backface-visibility: hidden;
  will-change: transform;
}

.qs-bottom-nav a {
  flex: 1 1 0;
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  min-height: calc(var(--qs-bottomnav-h) - 8px);
  padding: 6px;
  color: var(--qs-muted);
  font-size: 12px;
  text-decoration: none;
  transition: background 140ms ease, color 140ms ease;
}

.qs-bottom-nav a .qs-nav-icon {
  width: 22px;
  height: 22px;
  display: block;
}

.qs-bottom-nav .qs-nav-avatar,
.qs-sidebar .qs-nav-avatar {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  object-fit: cover;
  display: block;
  flex: 0 0 auto;
}

.qs-bottom-nav a.active {
  color: var(--qs-primary);
  font-weight: 700;
}

.qs-bottom-nav a.active .qs-nav-icon,
.qs-bottom-nav a.active .qs-nav-avatar {
  filter: saturate(1.05);
}

.qs-bottom-nav a:hover {
  background: rgba(0, 148, 255, 0.07);
  border-radius: 14px;
}

.qs-bottom-nav a:focus-visible {
  outline: 2px solid rgba(0, 148, 255, 0.35);
  outline-offset: 3px;
  border-radius: 12px;
}


@media (min-width: 1000px) {
  .qs-bottom-nav--public {
    display: none;
  }

  html.qs-has-bottomnav.qs-has-public-bottomnav body {
    padding-bottom: 0;
  }
}

/* Desktop sidebar (app only) */
.qs-sidebar {
  display: none;
}

@media (min-width: 1000px) {
  html.qs-has-app-bottomnav {
    --qs-sidebar-width: 84px;
    --qs-shell-offset: calc(var(--qs-sidebar-left) + var(--qs-sidebar-width));
  }

  html.qs-has-app-bottomnav.qs-sidebar-expanded {
    --qs-sidebar-width: var(--qs-sidebar-expanded-width);
  }

  .qs-sidebar {
    position: fixed;
    left: var(--qs-sidebar-left);
    top: calc(var(--qs-header-h) + var(--qs-sidebar-top-gap));
    bottom: var(--qs-sidebar-bottom-gap);
    z-index: 998;
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: var(--qs-sidebar-width);
    padding: 12px 8px 14px;
    overflow: hidden;
    box-sizing: border-box;
    border: 1px solid rgba(0, 51, 102, 0.10);
    border-radius: 26px;
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 18px 42px rgba(0, 24, 58, 0.12);
    transition: width 180ms ease, box-shadow 180ms ease, border-color 180ms ease, padding 180ms ease;
  }

  .qs-sidebar .qs-side-toggle,
  .qs-sidebar .qs-side-item {
    width: 100%;
    min-height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    box-sizing: border-box;
    padding: 0;
    border: 1px solid transparent;
    border-radius: 18px;
    text-decoration: none;
    color: var(--qs-text);
    background: transparent;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.65);
    transition: background 140ms ease, color 140ms ease, border-color 140ms ease, box-shadow 140ms ease, padding 180ms ease;
  }

  .qs-sidebar .qs-side-toggle {
    min-height: 72px;
    cursor: pointer;
    margin-bottom: 2px;
    background: linear-gradient(180deg, rgba(0, 148, 255, 0.10), rgba(0, 51, 102, 0.03));
    border-color: rgba(0, 51, 102, 0.10);
  }

  .qs-sidebar .qs-side-toggle:hover {
    background: linear-gradient(180deg, rgba(0, 148, 255, 0.14), rgba(0, 51, 102, 0.05));
  }

  .qs-sidebar .qs-side-toggle:focus-visible,
  .qs-sidebar .qs-side-item:focus-visible {
    outline: 2px solid rgba(0, 148, 255, 0.28);
    outline-offset: 2px;
  }

  .qs-sidebar .qs-side-item {
    font-weight: 650;
  }

  .qs-sidebar .qs-side-item:hover {
    background: rgba(0, 148, 255, 0.08);
    border-color: rgba(0, 148, 255, 0.12);
  }

  .qs-sidebar .qs-side-item.active {
    color: var(--qs-primary);
    font-weight: 700;
    background: linear-gradient(180deg, rgba(0, 148, 255, 0.12), rgba(0, 148, 255, 0.07));
    border-color: rgba(0, 148, 255, 0.18);
    box-shadow: 0 10px 24px rgba(0, 148, 255, 0.08);
  }

  .qs-sidebar .qs-side-item .qs-nav-icon,
  .qs-sidebar .qs-side-toggle .qs-nav-icon,
  .qs-sidebar .qs-nav-avatar {
    width: 24px;
    height: 24px;
    flex: 0 0 auto;
    display: block;
    margin: 0;
  }

  .qs-sidebar .qs-side-label {
    display: inline-block;
    max-width: 0;
    opacity: 0;
    visibility: hidden;
    overflow: hidden;
    margin-left: 0;
    white-space: nowrap;
    text-overflow: ellipsis;
    font-size: 15px;
    line-height: 1.2;
    transition: max-width 160ms ease, opacity 120ms ease, margin-left 120ms ease, visibility 0s linear 160ms;
  }

  html.qs-sidebar-expanded .qs-sidebar .qs-side-toggle,
  html.qs-sidebar-expanded .qs-sidebar .qs-side-item {
    justify-content: flex-start;
    padding-inline: 16px;
  }

  html.qs-sidebar-expanded .qs-sidebar .qs-side-label {
    max-width: 148px;
    opacity: 1;
    visibility: visible;
    margin-left: 4px;
    transition: max-width 160ms ease, opacity 120ms ease, margin-left 120ms ease, visibility 0s;
  }

  /* Desktop: show sidebar, hide app bottom nav */
  .qs-bottom-nav--app {
    display: none;
  }

  html.qs-has-bottomnav.qs-has-app-bottomnav body {
    padding-bottom: 0;
    padding-left: var(--qs-shell-offset);
  }
}


/* C1 – precise icon centering */
@media (min-width: 1000px) {
  html.qs-has-app-bottomnav:not(.qs-sidebar-expanded) .qs-sidebar .qs-side-toggle,
  html.qs-has-app-bottomnav:not(.qs-sidebar-expanded) .qs-sidebar .qs-side-item {
    padding-inline: 0;
    justify-content: center;
  }

  html.qs-has-app-bottomnav:not(.qs-sidebar-expanded) .qs-sidebar .qs-side-toggle > .qs-nav-icon,
  html.qs-has-app-bottomnav:not(.qs-sidebar-expanded) .qs-sidebar .qs-side-item > .qs-nav-icon,
  html.qs-has-app-bottomnav:not(.qs-sidebar-expanded) .qs-sidebar .qs-side-item > .qs-nav-avatar {
    margin-inline: auto;
  }
}


/* D3 – collapsed sidebar geometry */
@media (min-width: 1000px) {
  html.qs-has-app-bottomnav{
    --qs-shell-offset: calc(var(--qs-sidebar-left) + var(--qs-sidebar-width) + 18px);
  }

  html.qs-has-app-bottomnav:not(.qs-sidebar-expanded) .qs-sidebar .qs-side-toggle{
    width: 56px;
    margin-inline: auto;
    padding-inline: 0 !important;
    justify-content: center !important;
  }

  html.qs-has-app-bottomnav:not(.qs-sidebar-expanded) .qs-sidebar .qs-side-item{
    width: 56px;
    min-width: 56px;
    margin-inline: auto;
    padding-inline: 0 !important;
    justify-content: center !important;
    align-items: center;
    text-align: center;
  }

  html.qs-has-app-bottomnav:not(.qs-sidebar-expanded) .qs-sidebar .qs-side-toggle > .qs-nav-icon,
  html.qs-has-app-bottomnav:not(.qs-sidebar-expanded) .qs-sidebar .qs-side-item > .qs-nav-icon,
  html.qs-has-app-bottomnav:not(.qs-sidebar-expanded) .qs-sidebar .qs-side-item > .qs-nav-avatar{
    display: block;
    margin: 0 auto !important;
  }

  html.qs-sidebar-expanded .qs-sidebar .qs-side-toggle,
  html.qs-sidebar-expanded .qs-sidebar .qs-side-item{
    width: 100%;
    min-width: 0;
    margin-inline: 0;
  }
}


/* ===== E3 retry – collapsed sidebar centering + shell safe area ===== */
@media (min-width: 1000px) {
  html.qs-has-app-bottomnav{
    --qs-shell-offset: calc(var(--qs-sidebar-left) + var(--qs-sidebar-width) + 18px);
  }

  html.qs-has-app-bottomnav:not(.qs-sidebar-expanded) .qs-sidebar .qs-side-toggle,
  html.qs-has-app-bottomnav:not(.qs-sidebar-expanded) .qs-sidebar .qs-side-item{
    width: 56px;
    min-width: 56px;
    margin-inline: auto;
    padding-inline: 0 !important;
    justify-content: center !important;
    align-items: center;
    gap: 0 !important;
    text-align: center;
  }

  html.qs-has-app-bottomnav:not(.qs-sidebar-expanded) .qs-sidebar .qs-side-toggle > .qs-nav-icon,
  html.qs-has-app-bottomnav:not(.qs-sidebar-expanded) .qs-sidebar .qs-side-item > .qs-nav-icon,
  html.qs-has-app-bottomnav:not(.qs-sidebar-expanded) .qs-sidebar .qs-side-item > .qs-nav-avatar{
    display: block;
    margin-inline: auto !important;
  }

  html.qs-sidebar-expanded .qs-sidebar .qs-side-toggle,
  html.qs-sidebar-expanded .qs-sidebar .qs-side-item{
    width: 100%;
    min-width: 0;
    margin-inline: 0;
    gap: 12px;
  }
}