.mobile-bottom-nav {
  display: none;
}

.mobile-top-profile {
  display: none;
}

@media (max-width: 768px) {
  :root {
    --mobile-top-bar: 64px;
    --mobile-bottom-bar: 68px;
  }

  body {
    padding-bottom: calc(var(--mobile-bottom-bar) + env(safe-area-inset-bottom));
  }

  .nav.site-nav {
    min-height: var(--mobile-top-bar);
    padding: 10px 16px;
  }

  .site-nav .nav__links {
    display: none;
  }

  .mobile-bottom-nav {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 400;
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    min-height: calc(var(--mobile-bottom-bar) + env(safe-area-inset-bottom));
    padding: 5px 6px calc(5px + env(safe-area-inset-bottom));
    border-top: 1px solid rgba(130, 156, 118, 0.34);
    background: rgba(9, 14, 10, 0.97);
    box-shadow: 0 -10px 28px rgba(5, 10, 6, 0.3);
    backdrop-filter: blur(14px);
  }

  .mobile-bottom-nav--guest {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .mobile-bottom-nav > a,
  .mobile-bottom-menu > summary {
    min-width: 0;
    min-height: 54px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    border-radius: 10px;
    color: #aebfad;
    text-decoration: none;
    font: 600 0.7rem/1.1 var(--font-sans, sans-serif);
    -webkit-tap-highlight-color: transparent;
  }

  .mobile-bottom-nav > a > span,
  .mobile-bottom-menu > summary > span {
    font-size: 1.25rem;
    line-height: 1;
  }

  .mobile-bottom-nav a[aria-current="page"] {
    background: rgba(87, 201, 122, 0.15);
    color: #9be6aa;
  }

  .mobile-bottom-menu {
    position: relative;
    min-width: 0;
  }

  .mobile-bottom-menu > summary {
    list-style: none;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
  }

  .mobile-bottom-menu > summary::-webkit-details-marker {
    display: none;
  }

  .mobile-bottom-menu > div {
    position: fixed;
    left: 12px;
    right: 12px;
    bottom: calc(var(--mobile-bottom-bar) + env(safe-area-inset-bottom) + 10px);
    width: auto;
    display: grid;
    gap: 4px;
    padding: 8px;
    border: 1px solid rgba(130, 156, 118, 0.36);
    border-radius: 12px;
    background: rgba(9, 14, 10, 0.99);
    box-shadow: 0 -12px 30px rgba(0, 0, 0, 0.4);
  }

  .mobile-bottom-menu > div a {
    min-height: 44px;
    display: flex;
    align-items: center;
    padding: 8px 12px;
    border-radius: 8px;
    color: #dcebdc;
    text-decoration: none;
    font-weight: 700;
  }

  .mobile-bottom-menu > div a:hover,
  .mobile-bottom-menu > div a:focus-visible {
    background: rgba(87, 201, 122, 0.15);
  }

  .mobile-bottom-menu[data-current="true"] > summary {
    background: rgba(87, 201, 122, 0.15);
    color: #9be6aa;
  }

  .mobile-menu-arrow {
    display: inline-block;
    width: 6px;
    height: 6px;
    margin-left: 2px;
    border-right: 1px solid currentColor;
    border-bottom: 1px solid currentColor;
    transform: translateY(-2px) rotate(45deg);
    transition: transform 0.16s ease;
  }

  .mobile-bottom-menu[open] .mobile-menu-arrow {
    transform: translateY(1px) rotate(225deg);
  }

  .mobile-profile-icon {
    width: 27px;
    height: 27px;
    display: grid;
    place-items: center;
    overflow: hidden;
    border: 1.5px solid rgba(244, 218, 151, 0.9);
    border-radius: 50%;
    background: radial-gradient(circle at 35% 25%, #fff6cf, #dfe9c8 46%, #486a36 100%);
    color: #1a2a16;
  }

  .mobile-profile-icon img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
  }

  .mobile-profile-icon b {
    font-size: 0.9rem;
    line-height: 1;
  }

  .mobile-top-profile {
    position: relative;
    z-index: 410;
    display: block;
    justify-self: end;
  }

  .mobile-top-profile > summary {
    min-width: 48px;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 7px;
    list-style: none;
    color: #dcebdc;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
  }

  .mobile-top-profile > summary::-webkit-details-marker {
    display: none;
  }

  .mobile-top-profile .mobile-profile-icon {
    width: 36px;
    height: 36px;
  }

  .mobile-top-profile__arrow {
    width: 7px;
    height: 7px;
    border-right: 1px solid currentColor;
    border-bottom: 1px solid currentColor;
    transform: translateY(-2px) rotate(45deg);
    transition: transform 0.16s ease;
  }

  .mobile-top-profile[open] .mobile-top-profile__arrow {
    transform: translateY(2px) rotate(225deg);
  }

  .mobile-top-profile__panel {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    width: min(220px, calc(100vw - 24px));
    display: grid;
    gap: 4px;
    padding: 8px;
    border: 1px solid rgba(130, 156, 118, 0.36);
    border-radius: 12px;
    background: rgba(9, 14, 10, 0.99);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
  }

  .mobile-top-profile__panel a {
    min-height: 44px;
    display: flex;
    align-items: center;
    padding: 8px 12px;
    border-radius: 8px;
    color: #dcebdc;
    text-decoration: none;
    font-weight: 700;
  }

  .mobile-top-profile__panel a:hover,
  .mobile-top-profile__panel a:focus-visible {
    background: rgba(87, 201, 122, 0.15);
  }

  .mobile-top-profile[data-current="true"] .mobile-profile-icon {
    box-shadow: 0 0 0 3px rgba(87, 201, 122, 0.28);
  }

  @media (max-width: 380px) {
    .mobile-bottom-nav > a,
    .mobile-bottom-menu > summary {
      font-size: 0.62rem;
    }
  }

  button,
  .btn,
  input,
  select,
  textarea {
    min-height: 44px;
  }

  input,
  select,
  textarea {
    font-size: 16px;
  }

  body:not(.tree-workspace) main,
  .profile-page,
  .stats-page,
  .badges-page,
  .donations-page,
  .dashboard-page,
  .my-books-page,
  .challenges-page,
  .community-page {
    padding-bottom: calc(var(--mobile-bottom-bar) + env(safe-area-inset-bottom) + 28px);
  }

  table {
    display: block;
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  body.tree-workspace {
    padding-bottom: 0;
  }

  .tree-workspace .tree-workspace-nav {
    height: var(--mobile-top-bar);
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 10px;
    padding: 10px 12px;
  }

  .tree-workspace-nav .nav__name,
  .tree-workspace-nav .nav__links {
    display: none;
  }

  .tree-workspace-nav .nav__search {
    max-width: none;
  }

  .tree-workspace-nav .nav__search input {
    min-height: 42px;
  }

  .tree-workspace .canvas-wrap {
    top: var(--mobile-top-bar);
    bottom: calc(var(--mobile-bottom-bar) + env(safe-area-inset-bottom));
  }

  .tree-mobile-toolbar {
    position: absolute;
    z-index: 20;
    top: 8px;
    left: 8px;
    right: 8px;
    display: grid;
    gap: 6px;
    pointer-events: none;
  }

  .tree-mobile-toolbar__views,
  .tree-mobile-toolbar__tools {
    display: flex;
    gap: 6px;
    pointer-events: auto;
  }

  .tree-mobile-toolbar button,
  .tree-mobile-toolbar select,
  .tree-mobile-more summary {
    min-height: 44px;
    border: 1px solid rgba(242, 197, 114, 0.34);
    border-radius: 10px;
    background: rgba(12, 16, 12, 0.94);
    color: #f5ead8;
    font: 700 0.78rem/1 var(--font-sans, sans-serif);
  }

  .tree-mobile-toolbar button {
    flex: 1 1 0;
    padding: 8px;
  }

  .tree-mobile-toolbar button[aria-pressed="true"] {
    border-color: #f2c572;
    background: rgba(242, 197, 114, 0.2);
    color: #fff3d7;
  }

  .tree-mobile-toolbar select {
    min-width: 0;
    flex: 1 1 auto;
    padding: 8px 30px 8px 10px;
  }

  .tree-mobile-more {
    position: relative;
    flex: 0 0 auto;
  }

  .tree-mobile-more summary {
    min-width: 74px;
    display: grid;
    place-items: center;
    padding: 8px 12px;
    list-style: none;
    cursor: pointer;
  }

  .tree-mobile-more summary::-webkit-details-marker {
    display: none;
  }

  .tree-mobile-more > div {
    position: absolute;
    top: calc(100% + 5px);
    right: 0;
    width: 170px;
    display: grid;
    gap: 5px;
    padding: 7px;
    border: 1px solid rgba(242, 197, 114, 0.3);
    border-radius: 12px;
    background: rgba(10, 14, 10, 0.98);
    box-shadow: 0 16px 30px rgba(0, 0, 0, 0.38);
  }

  .tree-mobile-more > div button {
    width: 100%;
  }

  .tree-workspace #treeCanvas {
    touch-action: none;
  }

  .tree-workspace .minimap,
  .tree-workspace .zoom-controls,
  .tree-workspace .float-bar {
    display: none;
  }

  .mobile-tree-list {
    position: absolute;
    z-index: 12;
    inset: 106px 0 0;
    overflow-y: auto;
    padding: 0 10px 24px;
    background: linear-gradient(180deg, #0c110d, #080b08);
    color: #f4ead8;
    -webkit-overflow-scrolling: touch;
  }

  .tree-workspace[data-tree-view="list"] #treeCanvas {
    visibility: hidden;
  }

  .tree-workspace[data-tree-view="list"] .empty-state {
    display: none !important;
  }

  .tree-workspace[data-tree-view="list"] .mobile-tree-list {
    display: block !important;
  }

  .mobile-tree-list__search {
    position: sticky;
    top: 0;
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 0 10px;
    background: #0c110d;
  }

  .mobile-tree-list__search input {
    min-width: 0;
    flex: 1 1 auto;
    border: 1px solid rgba(242, 197, 114, 0.3);
    border-radius: 10px;
    padding: 9px 12px;
    background: rgba(255, 255, 255, 0.06);
    color: #fff;
  }

  .mobile-tree-list__search span {
    flex: 0 0 auto;
    color: #cbb99f;
    font-size: 0.76rem;
  }

  .mobile-tree-list__nodes {
    display: grid;
    gap: 7px;
  }

  .mobile-tree-node {
    width: calc(100% - var(--tree-indent, 0px));
    margin-left: var(--tree-indent, 0px);
    min-height: 64px;
    display: grid;
    grid-template-columns: 44px minmax(0, 1fr) auto;
    align-items: center;
    gap: 10px;
    padding: 8px 10px;
    border: 1px solid rgba(205, 174, 126, 0.22);
    border-radius: 12px;
    background: rgba(28, 35, 27, 0.92);
    color: #f7eee0;
    text-align: left;
  }

  .mobile-tree-node__cover,
  .mobile-tree-node__fallback {
    width: 44px;
    height: 48px;
    border-radius: 7px;
    object-fit: cover;
    background: #2c241b;
  }

  .mobile-tree-node__fallback {
    display: grid;
    place-items: center;
    color: #ead4b2;
    font-size: 0.7rem;
    font-weight: 800;
  }

  .mobile-tree-node strong,
  .mobile-tree-node small {
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .mobile-tree-node small {
    margin-top: 3px;
    color: #c7b59d;
    font-size: 0.75rem;
  }

  .mobile-tree-node__children {
    color: #bfae96;
    font-size: 0.72rem;
  }

  .mobile-tree-list__empty {
    padding: 38px 18px;
    color: #c7b59d;
    text-align: center;
  }

  .tree-workspace .sidebar {
    top: auto;
    bottom: calc(var(--mobile-bottom-bar) + env(safe-area-inset-bottom));
    width: 100%;
    height: min(78dvh, 720px);
    padding: 18px 16px 30px;
    border-top: 1px solid rgba(242, 197, 114, 0.34);
    border-left: 0;
    border-radius: 20px 20px 0 0;
    transform: translateY(105%);
  }

  .tree-workspace .sidebar.open {
    transform: translateY(0);
  }

  .tree-workspace .version-panel {
    top: auto;
    bottom: calc(var(--mobile-bottom-bar) + env(safe-area-inset-bottom));
    left: 0;
    right: 0;
    width: 100%;
    height: min(72dvh, 680px);
    overflow-y: auto;
    border: 1px solid rgba(242, 197, 114, 0.34);
    border-radius: 20px 20px 0 0;
  }

  .tree-workspace .sidebar__close {
    min-width: 44px;
    min-height: 44px;
  }

  .tree-workspace .modal-overlay {
    align-items: flex-end;
    padding: 0;
  }

  .tree-workspace .book-modal {
    width: 100%;
    max-height: 90dvh;
    margin: 0;
    border-radius: 20px 20px 0 0;
  }

  .tree-workspace .modal__footer {
    position: sticky;
    bottom: 0;
    background: rgba(17, 24, 18, 0.98);
  }

  @media (hover: none), (pointer: coarse) {
    .tree-workspace .action-rail,
    .tree-workspace .node-hover-bridge {
      display: none;
    }
  }
}

@media (min-width: 769px) {
  .mobile-only {
    display: none !important;
  }
}