html {
  --mobile-nav-height: 0px;
  --mobile-safe-area-top: env(safe-area-inset-top);
  --mobile-safe-area-right: env(safe-area-inset-right);
  --mobile-safe-area-bottom: env(safe-area-inset-bottom);
  --mobile-safe-area-left: env(safe-area-inset-left);
  --mobile-nav-offset: max(4px, var(--mobile-safe-area-bottom));
  --mobile-content-end-gap: calc(var(--space-10) + 8px);
  --mobile-bottom-clearance: calc(var(--mobile-nav-height) + var(--mobile-nav-offset) + var(--mobile-content-end-gap));
}

.mobile-role-nav,
.mobile-role-menu,
.mobile-role-nav-overlay { display: none; }

@media (display-mode: standalone) {
  html.luminous-root,
  html.luminous-root body,
  html.luminous-root :is(.admin-shell, .student-shell, .auth-shell) {
    min-height: 100dvh;
    background-color: var(--app-bg-color);
  }
}

@media (max-width: 52rem) {
  html,
  body { overflow-x: clip; }

  body.admin-body {
    padding-bottom: 0;
  }

  .mobile-role-nav-overlay {
    position: fixed;
    z-index: 39;
    right: 0;
    bottom: 0;
    left: 0;
    height: var(--mobile-bottom-clearance);
    display: block;
    pointer-events: none;
    background: linear-gradient(
      to top,
      color-mix(in srgb, var(--le-bg-deep) 88%, transparent) 0%,
      color-mix(in srgb, var(--le-bg-deep) 68%, transparent) 24%,
      color-mix(in srgb, var(--le-bg-deep) 38%, transparent) 52%,
      color-mix(in srgb, var(--le-bg-deep) 12%, transparent) 78%,
      transparent 100%
    );
  }

  .admin-main,
  .admin-main:not(.admin-main-wide),
  .admin-main:has(.luminous-production-dashboard) {
    padding-top: calc(var(--space-4) + var(--mobile-safe-area-top));
    padding-bottom: var(--mobile-bottom-clearance);
  }

  .mobile-role-nav {
    position: fixed;
    z-index: 40;
    right: max(16px, var(--mobile-safe-area-right));
    bottom: var(--mobile-nav-offset);
    left: max(16px, var(--mobile-safe-area-left));
    min-height: 64px;
    box-sizing: border-box;
    padding: 5px;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    border: 1px solid color-mix(in srgb, var(--le-line, var(--color-border)) 84%, transparent);
    border-radius: 18px;
    color: var(--le-muted, var(--color-text-muted));
    background: color-mix(in srgb, var(--le-surface-raised, var(--color-surface)) 94%, transparent);
    box-shadow: 0 10px 30px color-mix(in srgb, var(--le-bg-deep) 18%, transparent);
    -webkit-backdrop-filter: blur(16px) saturate(.9);
    backdrop-filter: blur(16px) saturate(.9);
  }

  .mobile-role-nav :is(a, button) {
    position: relative;
    min-width: 0;
    min-height: 52px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    border: 0;
    border-radius: 13px;
    color: inherit;
    background: transparent;
    font: 700 10px/1.1 ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
    text-decoration: none;
    cursor: pointer;
  }

  .mobile-role-nav :is(a, button)::before {
    position: absolute;
    z-index: -1;
    inset: 2px 4px;
    border-radius: 11px;
    background: transparent;
    content: "";
  }

  .mobile-role-nav :is(a, button) > * { position: relative; }

  .mobile-role-nav :is(a, button):is(:hover, :focus-visible, .active) {
    color: var(--accent, var(--color-accent-700));
    background: transparent;
  }

  .mobile-role-nav :is(a, button):is(:hover, :focus-visible, .active)::before {
    background: var(--accent-soft, var(--color-accent-100));
  }

  .mobile-role-nav :is(a, button):focus-visible,
  .mobile-role-menu :is(a, button):focus-visible {
    outline: 2px solid var(--accent, var(--color-focus));
    outline-offset: 2px;
  }

  .mobile-role-nav button:active { transform: scale(.97); }

  .mobile-role-menu {
    width: min(680px, calc(100% - 24px));
    height: calc(100dvh - 24px - var(--mobile-safe-area-top) - var(--mobile-safe-area-bottom));
    max-height: none;
    margin: max(12px, var(--mobile-safe-area-top)) auto max(12px, var(--mobile-safe-area-bottom));
    padding: 0;
    overflow: hidden;
    border: 1px solid var(--le-line);
    border-radius: 24px;
    color: var(--le-text);
    background:
      radial-gradient(circle at 92% 0, var(--accent-glow), transparent 15rem),
      linear-gradient(150deg, var(--le-surface-raised), var(--le-surface));
    box-shadow: 0 28px 80px color-mix(in srgb, var(--le-bg-deep) 48%, transparent);
  }

  .mobile-role-menu[open] { display: block; }

  .mobile-role-menu:focus { outline: none; }

  html.mobile-role-menu-open,
  html.mobile-role-menu-open body { overflow: hidden; }

  .mobile-role-menu::backdrop {
    background: var(--le-dialog-backdrop);
    -webkit-backdrop-filter: blur(2px);
    backdrop-filter: blur(2px);
  }

  .mobile-role-menu[open] { animation: mobile-role-menu-in 180ms cubic-bezier(.22, 1, .36, 1); }

  .mobile-role-menu-panel {
    height: 100%;
    box-sizing: border-box;
    display: grid;
    grid-template-rows: auto minmax(0, 1fr) auto;
  }

  .mobile-role-menu-header {
    padding: 26px 22px 20px;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    border-bottom: 1px solid var(--le-line);
  }

  .mobile-role-menu-header :is(p, h2) { margin: 0; }
  .mobile-role-menu-header p { color: var(--le-muted); font: 700 10px/1.2 ui-monospace, monospace; letter-spacing: .14em; text-transform: uppercase; }
  .mobile-role-menu-header h2 { margin-top: 7px; color: var(--le-text); font-size: 30px; line-height: 1; letter-spacing: -.05em; }

  html.luminous-root body.admin-body .mobile-role-menu .dialog-close {
    width: 44px;
    height: 44px;
    border-color: var(--le-line);
    border-radius: 12px;
    color: var(--le-muted);
    background: transparent;
    box-shadow: none;
  }

  html.luminous-root body.admin-body .mobile-role-menu .dialog-close:hover {
    border-color: color-mix(in srgb, var(--accent) 42%, var(--le-line));
    color: var(--le-text);
    background: var(--accent-soft);
    box-shadow: none;
  }

  html.luminous-root body.admin-body .mobile-role-menu .dialog-close:focus-visible {
    border-color: var(--accent);
    color: var(--le-text);
    background: color-mix(in srgb, var(--accent) 14%, transparent);
    outline: 2px solid var(--accent);
    outline-offset: 2px;
  }

  .mobile-role-menu-links { min-height: 0; padding: 22px 16px; overflow-y: auto; overscroll-behavior: contain; }
  .mobile-role-menu-links section + section { margin-top: 26px; }
  .mobile-role-menu-links h3 { margin: 0 8px 9px; color: var(--le-muted); font: 700 10px/1.2 ui-monospace, monospace; letter-spacing: .14em; text-transform: uppercase; }
  .mobile-role-menu-links section > div { display: grid; gap: 4px; }
  .mobile-role-menu-links a { min-height: 56px; padding: 0 12px; display: flex; align-items: center; gap: 14px; border-radius: 14px; color: var(--le-text); font-size: 14px; font-weight: 700; text-decoration: none; }
  .mobile-role-menu-links a .app-icon { color: var(--le-muted); }
  .mobile-role-menu-links a:is(:hover, :focus-visible, .active) { background: color-mix(in srgb, var(--accent) 17%, transparent); }
  .mobile-role-menu-links a.active { color: var(--le-text); }
  .mobile-role-menu-links a.active .app-icon { color: var(--accent); }
  .mobile-role-menu-links a:focus-visible { outline-color: var(--accent); outline-offset: -2px; }

  .mobile-role-menu-account {
    padding: 18px 22px calc(18px + var(--mobile-safe-area-bottom));
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 10px;
    border-top: 1px solid var(--le-line);
    background: color-mix(in srgb, var(--le-surface-warm) 72%, var(--le-surface-raised));
  }
  .mobile-role-menu-session { min-width: 0; display: flex; align-items: center; gap: 10px; }
  .mobile-role-menu-account form { margin: 0; }
  .mobile-role-menu-account .session-avatar { color: var(--accent-ink); background: var(--accent); }
  .mobile-role-menu-account small,
  .mobile-role-menu-account strong { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .mobile-role-menu-account small { color: var(--le-muted); font-size: 10px; }
  .mobile-role-menu-account strong { max-width: 11rem; color: var(--le-text); font-size: 12px; }
  .mobile-role-menu-account .button { min-height: 44px; flex: none; border-color: var(--le-line); color: var(--le-text); background: transparent; box-shadow: none; }
  .mobile-role-menu-account .button:is(:hover, :focus-visible) { border-color: color-mix(in srgb, var(--accent) 42%, var(--le-line)); color: var(--le-text); background: var(--accent-soft); box-shadow: none; }
  .mobile-role-menu-account .button:focus-visible { outline-color: var(--accent); }
  .mobile-role-menu :is(.dialog-close, .mobile-role-menu-links a, .mobile-role-menu-account .button):active { transform: scale(.98); }

  .mobile-planning-nav { margin: 0 0 var(--space-4); display: flex; gap: 7px; overflow-x: auto; padding-bottom: 2px; scrollbar-width: none; }
  .mobile-planning-nav::-webkit-scrollbar { display: none; }
  .mobile-planning-nav a { min-height: 38px; padding: 0 12px; display: inline-flex; align-items: center; flex: 0 0 auto; border: 1px solid var(--le-line, var(--color-border)); border-radius: var(--radius-sm); color: var(--le-muted, var(--color-text-muted)); background: var(--le-surface-raised, var(--color-surface)); font: 700 11px/1 ui-monospace, monospace; text-decoration: none; }
  .mobile-planning-nav a.active { border-color: color-mix(in srgb, var(--accent, var(--color-accent-700)) 46%, var(--le-line, var(--color-border))); color: var(--accent, var(--color-accent-700)); background: var(--accent-soft, var(--color-accent-100)); }
}

@media (max-width: 22rem) {
  .mobile-role-nav { right: max(16px, var(--mobile-safe-area-right)); left: max(16px, var(--mobile-safe-area-left)); border-radius: 15px; }
  .mobile-role-nav :is(a, button) { font-size: 9px; }
  .mobile-role-menu { width: calc(100% - 16px); height: calc(100dvh - 16px - var(--mobile-safe-area-top) - var(--mobile-safe-area-bottom)); margin: max(8px, var(--mobile-safe-area-top)) auto max(8px, var(--mobile-safe-area-bottom)); }
  .mobile-role-menu-header { padding-inline: 18px; }
  .mobile-role-menu-account { padding-inline: 18px; }
}

@media (max-width: 52rem) and (orientation: landscape) {
  .mobile-role-nav { right: max(10px, var(--mobile-safe-area-right)); left: max(10px, var(--mobile-safe-area-left)); min-height: 54px; }
  .mobile-role-nav :is(a, button) { min-height: 42px; flex-direction: row; gap: 6px; }
  .mobile-role-menu { width: min(760px, calc(100% - 32px)); }
}

@keyframes mobile-role-menu-in { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

@media (prefers-reduced-motion: reduce) {
  .mobile-role-menu[open] { animation: none; }
  .mobile-role-nav :is(a, button) { transition: none; }
}

@media (max-width: 52rem) {
  .mobile-role-nav :is(a, button) {
    width: 100%;
    max-width: none;
    padding-inline: 2px;
    justify-self: stretch;
    overflow: hidden;
  }

  .mobile-role-nav :is(a, button) > span {
    width: 100%;
    overflow: hidden;
    text-align: center;
    text-overflow: clip;
    white-space: nowrap;
  }
}

@media (max-width: 340px) {
  .mobile-role-nav :is(a, button) {
    gap: 2px;
    padding-inline: 0;
    font-size: 9px;
  }

  .mobile-role-menu-account .button {
    gap: 5px;
    padding-inline: 8px;
    font-size: 11px;
  }
  .mobile-role-menu-account strong { font-size: 11px; }

}