source: Klonkt/src/views/partials/bottom-tab.ejs@ 72ec6a4

<%
// Bottom-tab navigation — mobile-only (hidden ≥768px via CSS).
//
// Tabs:
//   logged-out:  Home · Zoek · Inloggen        (3 tabs)
//   logged-in:   Home · Zoek · [Plus] · Profiel
//   The Plus tab is a FAB-style center action (accent bg, slightly raised).
//   It only appears for users with create-post permission.

const _siteUrlBase = (typeof siteUrlBase !== 'undefined' && siteUrlBase) ? siteUrlBase : '';
const _path        = (typeof currentPath !== 'undefined' && currentPath) ? currentPath : '/';
const _canPost     = !!(user && (typeof canMutate === 'undefined' || canMutate)
                        && permissions && permissions.canCreatePost && permissions.canCreatePost(user, site));
const _ownProfile  = user ? ('/users/' + user.username) : null;
const _homeHref    = _siteUrlBase + '/';

// Strip site prefix for cleaner matching
function _normalize(p) {
  if (_siteUrlBase && p.indexOf(_siteUrlBase) === 0) return p.slice(_siteUrlBase.length) || '/';
  return p;
}
const _p = _normalize(_path);

let _active = null;
if (_p === '/' || _p === '') _active = 'home';
else if (_p.indexOf('/search') === 0 || _p.indexOf('/tag/') === 0 || _p.indexOf('/type/') === 0) _active = 'search';
else if (_p === '/posts/new' || /^\/posts\/[^/]+\/edit$/.test(_p)) _active = 'create';
else if (_p.indexOf('/account') === 0 || (_ownProfile && _p.indexOf(_ownProfile) === 0)) _active = 'profile';
else if (_p.indexOf('/auth/login') === 0) _active = 'login';
%>

<nav class="bottom-tab" aria-label="Hoofdnavigatie">

  <!-- Home -->
  <%# htmx navigation (no full reload): the persistent audio player in document.body
      survives, so music does not skip when navigating. On mobile the top bar is hidden
      anyway, so a context reset via full-load is not needed here. %>
  <a class="bottom-tab-item<%= _active === 'home' ? ' is-active' : '' %>"
     href="<%= _homeHref %>"
     hx-get="<%= _homeHref %>?partial=1" hx-target="#pcms-main" hx-swap="innerHTML"
     hx-push-url="<%= _homeHref %>" hx-indicator="#pcms-loading"
     aria-label="Home" <%= _active === 'home' ? 'aria-current="page"' : '' %>>
    <svg class="bottom-tab-icon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true">
      <path d="M3 9l9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"/>
      <polyline points="9 22 9 12 15 12 15 22"/>
    </svg>
    <span class="bottom-tab-label"><%= t('tab.home') %></span>
  </a>

  <!-- Zoek -->
  <button type="button" class="bottom-tab-item<%= _active === 'search' ? ' is-active' : '' %>"
          id="bottom-tab-search-toggle" aria-label="<%= t('nav.search') %>">
    <svg class="bottom-tab-icon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true">
      <circle cx="11" cy="11" r="7"/>
      <line x1="21" y1="21" x2="16.65" y2="16.65"/>
    </svg>
    <span class="bottom-tab-label"><%= t('tab.search') %></span>
  </button>

  <!-- Plus (FAB-style, only when user can post) -->
  <% if (_canPost) { %>
    <a class="bottom-tab-item bottom-tab-fab<%= _active === 'create' ? ' is-active' : '' %>"
       href="<%= _siteUrlBase %>/posts/new"
       hx-get="<%= _siteUrlBase %>/posts/new?partial=1" hx-target="#pcms-main" hx-swap="innerHTML"
       hx-push-url="<%= _siteUrlBase %>/posts/new" hx-indicator="#pcms-loading"
       aria-label="Nieuwe post">
      <svg class="bottom-tab-icon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.25" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true">
        <line x1="12" y1="5" x2="12" y2="19"/>
        <line x1="5" y1="12" x2="19" y2="12"/>
      </svg>
      <span class="bottom-tab-label"><%= t('tab.write') %></span>
    </a>
  <% } %>


  <!-- Profiel / Inloggen -->
  <% if (user) { %>
    <button type="button"
            class="bottom-tab-item<%= _active === 'profile' ? ' is-active' : '' %>"
            data-profile-sheet-toggle
            aria-label="Profiel menu" aria-haspopup="dialog">
      <% if (user.avatar_url) { %>
        <img class="bottom-tab-avatar bottom-tab-avatar-img" src="<%= avatar(user.avatar_url, 128) %>" alt="">
      <% } else { %>
        <span class="bottom-tab-avatar"><%= user.username.charAt(0).toUpperCase() %></span>
      <% } %>
      <span class="bottom-tab-label"><%= t('tab.profile') %></span>
      <% if (typeof notifUnread !== 'undefined' && notifUnread > 0) { %>
        <span class="bottom-tab-badge" aria-label="<%= notifUnread %> ongelezen meldingen"><%= notifUnread > 99 ? '99+' : notifUnread %></span>
      <% } %>
    </button>
  <% } else { %>
    <a class="bottom-tab-item<%= _active === 'login' ? ' is-active' : '' %>"
       href="/auth/login"
       hx-get="/auth/login?partial=1" hx-target="#pcms-main" hx-swap="innerHTML"
       hx-push-url="/auth/login" hx-indicator="#pcms-loading"
       aria-label="Inloggen">
      <svg class="bottom-tab-icon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true">
        <path d="M15 3h4a2 2 0 0 1 2 2v14a2 2 0 0 1-2 2h-4"/>
        <polyline points="10 17 15 12 10 7"/>
        <line x1="15" y1="12" x2="3" y2="12"/>
      </svg>
      <span class="bottom-tab-label"><%= t('nav.login') %></span>
    </a>
  <% } %>

</nav>

<style>
/* ============================================================
   BOTTOM-TAB NAVIGATION (mobile-first)
   - Visible by default (mobile)
   - Hidden ≥768px (desktop uses .masthead instead)
   - Sticks to bottom of viewport, respects safe-area-inset
   ============================================================ */

.bottom-tab {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  /* z-index 1050: above mini-player (1000), below open sheet (1100).
     This makes the FAB (Schrijven knop) overlay the mini-player when
     they overlap visually. */
  z-index: 1050;
  display: flex;
  align-items: stretch;
  justify-content: space-around;
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border-top: 1px solid var(--rule);
  padding-bottom: env(safe-area-inset-bottom, 0);
  font-family: var(--font-ui);
  /* Subtle shadow so the bar feels "lifted" above content */
  box-shadow: 0 -2px 12px color-mix(in srgb, var(--ink) 5%, transparent);
}

.bottom-tab-item {
  flex: 1 1 0;
  min-height: 56px;
  /* Tap target ≥44px guaranteed (icon-row 24 + label 12 + padding) */
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 6px 4px;
  border: 0;
  background: transparent;
  color: var(--ink-muted);
  text-decoration: none;
  cursor: pointer;
  font-family: inherit;
  position: relative;
  transition: color 120ms ease, transform 120ms ease;
  -webkit-tap-highlight-color: transparent;
}

.bottom-tab-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

.bottom-tab-label {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.01em;
  line-height: 1;
  white-space: nowrap;
}

/* Pressed/active feedback — replaces hover for touch */
.bottom-tab-item:active {
  transform: scale(0.92);
  color: var(--ink);
}

/* Selected tab */
.bottom-tab-item.is-active {
  color: var(--accent);
}
.bottom-tab-item.is-active::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 28px;
  height: 2px;
  background: var(--accent);
  border-radius: 0 0 2px 2px;
}

/* Hover only on devices that actually have it */
@media (hover: hover) {
  .bottom-tab-item:hover { color: var(--ink); }
  .bottom-tab-item.is-active:hover { color: var(--accent); }
}

/* ── FAB-style Plus tab ───────────────────────────────
   The FAB icon is taken OUT of the flex flow with position:absolute so it
   cannot inflate the bar height or shift the label baseline. The label
   stays in flex flow with a margin-top equal to (icon + gap) to mimic
   a regular icon's contribution — that way center-alignment matches the
   other tabs exactly. */
.bottom-tab-fab {
  position: relative;
}
.bottom-tab-fab .bottom-tab-icon {
  position: absolute;
  left: 50%;
  top: -12px;            /* overhang above the bar */
  transform: translateX(-50%);
  width: 44px;
  height: 44px;
  padding: 10px;
  background: var(--accent);
  color: #fff;
  border-radius: 50%;
  box-shadow: 0 4px 12px color-mix(in srgb, var(--accent) 35%, transparent);
  transition: transform 120ms ease, box-shadow 120ms ease;
  margin: 0;             /* clear any inherited margin */
}
.bottom-tab-fab:active .bottom-tab-icon {
  transform: translateX(-50%) scale(0.92);
  box-shadow: 0 2px 6px color-mix(in srgb, var(--accent) 35%, transparent);
}
.bottom-tab-fab .bottom-tab-label {
  /* Mimic the space a regular 24px icon + 2px gap would occupy, so the
     label sits at the same vertical position as labels in sibling tabs. */
  margin-top: 26px;
  color: var(--ink-muted);
}
.bottom-tab-fab.is-active .bottom-tab-label { color: var(--accent); }
.bottom-tab-fab.is-active::before { display: none; } /* FAB doesn't need top-bar indicator */

/* ── Avatar in profile tab ──────────────────────────── */
.bottom-tab-avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--paper-2);
  color: var(--ink-soft);
  font-size: 11px;
  font-weight: 600;
  line-height: 1;
  overflow: hidden;
  object-fit: cover;
}
.bottom-tab-avatar-img {
  /* When rendered as <img>, the same dimensions + object-fit give the
     same circular crop as the letter span. */
  display: block;
}
/* Active-state used to tint the avatar with --accent. With user-uploaded
   avatars that override looks broken (orange wash over the photo). The
   active state is already signalled by the label color, which is enough. */

/* ── Unread badge ───────────────────────────────────── */
.bottom-tab-badge {
  position: absolute;
  top: 4px;
  left: calc(50% + 8px);
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  border-radius: 9px;
  background: var(--accent);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  line-height: 18px;
  text-align: center;
  border: 2px solid var(--paper);
  pointer-events: none;
}

/* ============================================================
   HIDE on desktop — top-nav takes over
   ============================================================ */
@media (min-width: 768px) {
  .bottom-tab { display: none; }
}

/* ============================================================
   When bottom-tab is present, body needs bottom padding so
   content doesn't sit underneath it. Applied via body class.
   ============================================================ */
@media (max-width: 767px) {
  body.has-bottom-tab .pcms-main {
    /* 56 (tab height) + safe-area + breathing room */
    padding-bottom: calc(72px + env(safe-area-inset-bottom, 0));
  }
  /* The .has-audio-player override (extra padding for stacked bars) lives
     in audio.css — keeps the audio-related rules together. */
}
</style>

<script>
// Bottom-tab search button → opens #search-overlay. Using event delegation + looking
// up the overlay on EVERY click: the overlay lives in the chrome that is OOB-replaced
// during htmx navigation, so a once-captured reference goes stale
// (button did nothing afterwards). Guard against double-wiring.
(function() {
  if (window.__btSearchWired) return;
  window.__btSearchWired = true;
  document.addEventListener('click', function(e) {
    if (!e.target.closest || !e.target.closest('#bottom-tab-search-toggle')) return;
    var o = document.getElementById('search-overlay');
    if (o) { o.hidden = false; var i = o.querySelector('input'); if (i) i.focus(); }
  });
})();
</script>