/* ============================================================
   BAN YARO — Layout
   App Shell: Mobile Bottom-Nav + Desktop Sidebar
   Mobile-first mit einer einzigen Media Query für Desktop
   ============================================================ */

/* ------------------------------------------------------------
   1. APP SHELL
   ------------------------------------------------------------ */
#app {
  display:    flex;
  flex-direction: column;
  height:     100dvh;   /* exakte Viewport-Höhe: body scrollt nie, nur #page-content */
  overflow:   hidden;
}

/* Content-Bereich: füllt den Raum zwischen Header und Bottom-Nav */
#page-content {
  flex:         1;
  overflow-y:   auto;
  overflow-x:   hidden;
  padding-bottom: calc(var(--nav-bottom-height) + var(--safe-bottom) + 16px);
  /* -webkit-overflow-scrolling für iOS-Momentum-Scroll */
  -webkit-overflow-scrolling: touch;
}

/* Desktop: Sidebar-Layout — kein Bottom-Nav, natürliche Höhe */
@media (min-width: 768px) {
  #app {
    flex-direction: row;
    height:         auto;
    min-height:     100dvh;
    overflow:       visible;
  }
  #page-content {
    padding-bottom: 0;
    padding-left:   var(--nav-sidebar-width);
  }
}

/* ------------------------------------------------------------
   2. HEADER (Mobile)
   ------------------------------------------------------------ */
#app-header {
  position:    sticky;
  top:         0;
  z-index:     100;
  min-height:  calc(var(--header-height) + var(--safe-top));
  padding-top: var(--safe-top);
  padding-bottom: var(--space-2);
  background:  var(--c-surface);
  border-bottom: 1px solid var(--c-border-light);
  display:     flex;
  align-items: center;
  padding-left:  var(--space-4);
  padding-right: var(--space-4);
  gap:           var(--space-3);
  box-shadow:    var(--shadow-xs);
}

.header-title {
  font-size:   var(--text-lg);
  font-weight: var(--weight-bold);
  color:       var(--c-text);
  flex:        1;
}

/* Dog Switcher Container im Header */
#header-dog-switcher {
  flex:       1;
  display:    flex;
  align-items: center;
  gap:        var(--space-2);
  min-width:  0;
  overflow:   visible;
}

.header-back {
  display:         flex;
  align-items:     center;
  justify-content: center;
  width:           40px;
  height:          40px;
  border-radius:   var(--radius-md);
  color:           var(--c-text-secondary);
  cursor:          pointer;
  transition:      background var(--transition-fast);
  font-size:       20px;
  flex-shrink:     0;
}
.header-back:hover { background: var(--c-surface-2); }

/* Hamburger-Button (nur Mobile) */
.header-menu-btn {
  width:           40px;
  height:          40px;
  display:         flex;
  align-items:     center;
  justify-content: center;
  border:          none;
  background:      transparent;
  font-size:       1.3rem;
  color:           var(--c-text);
  cursor:          pointer;
  border-radius:   var(--radius-md);
  flex-shrink:     0;
  -webkit-tap-highlight-color: transparent;
}
.header-menu-btn:hover { background: var(--c-surface-2); }

/* Backdrop für mobile Sidebar */
.sidebar-backdrop {
  display:    none;
  position:   fixed;
  inset:      0;
  background: rgba(0,0,0,0.45);
  z-index:    499;
}
.sidebar-backdrop.visible { display: block; }

/* Auf Desktop keinen mobilen Header zeigen */
@media (min-width: 768px) {
  #app-header { display: none; }
  .header-menu-btn { display: none; }
  .sidebar-backdrop { display: none !important; }
}

/* Karte: volle Höhe, kein Scrollen, kein Padding */
#page-map {
  height:   100%;
  overflow: hidden;
}
#page-map > .page-body {
  padding:  0 !important;
  overflow: hidden;
  height:   100%;
}

/* Gassi-Treffen + Sitting: volle Höhe, internes Scroll */
#page-walks,
#page-sitting,
#page-chat {
  height:   100%;
  overflow: hidden;
}
#page-walks > .page-body,
#page-sitting > .page-body,
#page-chat > .page-body {
  padding:  0 !important;
  gap:      0 !important;
  overflow: hidden;
  height:   100%;
  position: relative;
}

/* Routen: volle Höhe damit .rk-layout height:100% auflöst und
   das Grid intern scrollt (nicht die gesamte Seite via #page-content) */
#page-routes {
  height:   100%;
  overflow: hidden;
}
#page-routes > .page-body {
  padding:  0 !important;
  overflow: hidden;
  height:   100%;
}

/* ------------------------------------------------------------
   3. BOTTOM NAVIGATION (Mobile)
   ------------------------------------------------------------ */
#bottom-nav {
  position:    fixed;
  bottom:      0;
  left:        0;
  right:       0;
  z-index:     700;  /* über Leaflet-Panes (~400) */
  min-height:  calc(var(--nav-bottom-height) + var(--safe-bottom));
  padding-top:    var(--space-1);
  padding-bottom: calc(var(--safe-bottom) + var(--space-1));
  background:  var(--c-surface);
  border-top:  1px solid var(--c-border-light);
  display:     flex;
  align-items: stretch;
  box-shadow:  0 -2px 12px rgba(42, 31, 20, 0.08);
  transition:  border-top-color 0.4s ease;
}

@keyframes nav-alert-pulse {
  0%, 100% { box-shadow: 0 -2px 8px rgba(42,31,20,0.06); }
  50%       { box-shadow: 0 -6px 28px var(--nav-alert-color, rgba(220,38,38,0.65)); }
}
#bottom-nav.alert-poison {
  border-top: 4px solid var(--c-danger);
  --nav-alert-color: rgba(220, 38, 38, 0.65);
  animation: nav-alert-pulse 1.6s ease-in-out infinite;
}
#bottom-nav.alert-lost {
  border-top: 4px solid #f59e0b;
  --nav-alert-color: rgba(245, 158, 11, 0.65);
  animation: nav-alert-pulse 1.6s ease-in-out infinite;
}

.nav-item {
  flex:            1;
  display:         flex;
  flex-direction:  column;
  align-items:     center;
  justify-content: center;
  gap:             3px;
  cursor:          pointer;
  color:           var(--c-icon, var(--c-text-secondary));
  transition:      color var(--transition-fast);
  -webkit-tap-highlight-color: transparent;
  touch-action:    manipulation;
  position:        relative;
  padding:         var(--space-2) var(--space-1);
}

.nav-item:hover  { color: var(--c-text-secondary); }
.nav-item.active { color: var(--c-primary); }

/* Aktiv-Indikator oben */
.nav-item.active::before {
  content:       '';
  position:      absolute;
  top:           0;
  left:          50%;
  transform:     translateX(-50%);
  width:         32px;
  height:        3px;
  background:    var(--c-primary);
  border-radius: 0 0 var(--radius-full) var(--radius-full);
}

.nav-item-icon {
  font-size:  22px;
  line-height: 1;
  position:   relative;
  filter:     saturate(0.35) brightness(0.75);
  transition: filter var(--transition-fast);
}
.nav-item.active .nav-item-icon {
  filter: sepia(0.7) saturate(1.8) hue-rotate(-8deg) brightness(0.9);
}

/* Ungelesen-Badge auf Nav-Icon */
.nav-badge {
  position:      absolute;
  top:           -4px;
  right:         -6px;
  background:    var(--c-danger);
  color:         #fff;
  font-size:     9px;
  font-weight:   var(--weight-bold);
  min-width:     16px;
  height:        16px;
  border-radius: var(--radius-full);
  display:       flex;
  align-items:   center;
  justify-content: center;
  padding:       0 3px;
  border:        2px solid var(--c-surface);
  pointer-events: none;
}

.nav-item-label {
  font-size:   clamp(9px, 0.6rem, 11px);
  font-weight: var(--weight-semibold);
  line-height: 1;
  white-space: nowrap;
}

/* Mittlerer + Button: kein Label, größer */
.nav-item-center .nav-item-icon {
  width:         50px;
  height:        50px;
  background:    var(--c-primary);
  color:         #fff;
  border-radius: var(--radius-full);
  font-size:     26px;
  display:       flex;
  align-items:   center;
  justify-content: center;
  box-shadow:    var(--shadow-md);
  transition:    transform var(--transition-fast),
                 box-shadow var(--transition-fast);
  margin-top:    -12px; /* ragt über die Nav hinaus */
}
.nav-item-center:active .nav-item-icon {
  transform:  scale(0.93);
  box-shadow: var(--shadow-sm);
}
.nav-item-center.active::before { display: none; }
.nav-item-center .nav-item-label { display: none; }

/* Desktop: Bottom Nav ausblenden */
@media (min-width: 768px) {
  #bottom-nav { display: none; }
}

/* ------------------------------------------------------------
   4. SIDEBAR NAVIGATION (Desktop)
   ------------------------------------------------------------ */
#sidebar {
  display:        none;
  position:       fixed;
  top:            0;
  left:           0;
  bottom:         0;
  width:          var(--nav-sidebar-width);
  z-index:        300;
  background:     var(--c-surface);
  border-right:   1px solid var(--c-border-light);
  flex-direction: column;
  overflow:       hidden;   /* Sidebar selbst scrollt nicht */
  box-shadow:     var(--shadow-sm);
}

@media (min-width: 768px) {
  #sidebar { display: flex; }
}

/* Mobile Sidebar als Drawer */
@media (max-width: 767px) {
  #sidebar {
    display:          flex !important; /* überschreibt display:none aus Base */
    position:         fixed;
    top:              0;
    left:             0;
    bottom:           0;
    width:            var(--nav-sidebar-width);
    z-index:          1000;            /* klar über Backdrop (999) */
    transform:        translateX(-100%);
    transition:       transform 0.28s ease;
    background:       var(--c-surface);
    box-shadow:       none;
  }
  #sidebar.open {
    transform:  translateX(0);
    box-shadow: 4px 0 24px rgba(0,0,0,0.18);
  }
  .sidebar-backdrop {
    z-index: 999; /* unter Sidebar, über Seiteninhalt */
  }
}

.sidebar-logo {
  padding:      calc(var(--space-6) + var(--safe-top)) var(--space-5) var(--space-6);
  display:      flex;
  align-items:  center;
  gap:          var(--space-3);
  border-bottom: 1px solid var(--c-border-light);
  flex-shrink:  0;
}
.sidebar-logo-img {
  width:         36px;
  height:        36px;
  border-radius: var(--radius-full);
  object-fit:    cover;
}
.sidebar-logo-text {
  font-size:   var(--text-lg);
  font-weight: var(--weight-bold);
  color:       var(--c-text);
}

.sidebar-add {
  padding:    var(--space-4) var(--space-4) var(--space-2);
  flex-shrink: 0;
}

.sidebar-nav {
  flex:            1;
  padding:         var(--space-2) var(--space-2) var(--space-4);
  display:         flex;
  flex-direction:  column;
  gap:             var(--space-1);
  overflow-y:      auto;
  min-height:      0;   /* wichtig: flex-child darf kleiner werden als Inhalt */
  /* Firefox */
  scrollbar-width: thin;
  scrollbar-color: var(--c-primary) var(--c-surface);
}
.sidebar-nav::-webkit-scrollbar        { width: 6px; }
.sidebar-nav::-webkit-scrollbar-track  { background: var(--c-surface); }
.sidebar-nav::-webkit-scrollbar-thumb  {
  background:    var(--c-primary);
  border-radius: 3px;
}
.sidebar-nav::-webkit-scrollbar-thumb:hover { background: var(--c-primary-dark); }

.sidebar-section-label {
  font-size:      var(--text-xs);
  font-weight:    var(--weight-semibold);
  color:          var(--c-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding:        var(--space-3) var(--space-3) var(--space-1);
  margin-top:     var(--space-2);
}

.sidebar-section-toggle {
  display:         flex;
  align-items:     center;
  justify-content: space-between;
  width:           100%;
  background:      none;
  border:          none;
  cursor:          pointer;
  font-size:       var(--text-xs);
  font-weight:     var(--weight-semibold);
  color:           var(--c-text-muted);
  text-transform:  uppercase;
  letter-spacing:  0.08em;
  padding:         var(--space-3) var(--space-3) var(--space-1);
  margin-top:      var(--space-2);
  border-radius:   var(--radius-sm);
  transition:      color var(--transition-fast);
  -webkit-tap-highlight-color: transparent;
}
.sidebar-section-toggle:hover { color: var(--c-text); }
.sidebar-section-toggle .wissen-caret {
  transition: transform 0.2s ease;
  flex-shrink: 0;
}
.sidebar-section-toggle[aria-expanded="true"] .wissen-caret {
  transform: rotate(90deg);
}

.sidebar-section-body {
  display:        flex;
  flex-direction: column;
  gap:            var(--space-1);
  overflow:       hidden;
  max-height:     0;
  opacity:        0;
  transition:     max-height 0.25s ease, opacity 0.2s ease;
}
.sidebar-section-body.open {
  max-height: 300px;
  opacity:    1;
}

.sidebar-item {
  display:       flex;
  align-items:   center;
  gap:           var(--space-3);
  padding:       var(--space-3);
  border-radius: var(--radius-md);
  cursor:        pointer;
  color:         var(--c-text-secondary);
  font-size:     var(--text-sm);
  font-weight:   var(--weight-medium);
  transition:    background var(--transition-fast),
                 color      var(--transition-fast);
  -webkit-tap-highlight-color: transparent;
}
.sidebar-item:hover {
  background: var(--c-bg);
  color:      var(--c-text);
}
.sidebar-item.active {
  background: var(--c-primary-subtle);
  color:      var(--c-primary-dark);
  font-weight: var(--weight-semibold);
}
/* User-Eintrag bekommt nie den Active-Stil */
.sidebar-item--user.active {
  background: transparent;
  color:      var(--c-text-secondary);
  font-weight: var(--weight-medium);
}
.sidebar-item-icon {
  font-size:   18px;
  width:       24px;
  text-align:  center;
  flex-shrink: 0;
  filter:      saturate(0.35) brightness(0.75);
  transition:  filter var(--transition-fast);
}
.sidebar-item.active .sidebar-item-icon {
  filter: sepia(0.7) saturate(1.8) hue-rotate(-8deg) brightness(0.9);
}
.sidebar-item-badge {
  margin-left:   auto;
  background:    var(--c-danger);
  color:         #fff;
  font-size:     var(--text-xs);
  font-weight:   var(--weight-bold);
  min-width:     20px;
  height:        20px;
  border-radius: var(--radius-full);
  display:       flex;
  align-items:   center;
  justify-content: center;
  padding:       0 var(--space-1);
}

/* sidebar-footer entfernt — Einstellungen/Konto sind jetzt Teil der scrollbaren Nav */

/* ------------------------------------------------------------
   5. PAGE WRAPPER (inneres Layout der Seiten)
   ------------------------------------------------------------ */
.page {
  display:        none;
  flex-direction: column;
  min-height:     100%;
}
.page.active { display: flex; }

/* Scrollbarer Seiteninhalt */
.page-body {
  flex:       1;
  padding:    var(--space-4);
  display:    flex;
  flex-direction: column;
  gap:        var(--space-4);
}

/* Volle Breite mit seitlichem Limit für Desktop */
.page-container {
  width:      100%;
  max-width:  680px;
  margin:     0 auto;
}

/* Wide-Layout für Karte und ähnliches */
.page-container-wide {
  width:     100%;
  max-width: 1040px;
  margin:    0 auto;
}

/* Karte nimmt vollen Platz ein */
.page-fullscreen {
  position: absolute;
  inset:    0;
  padding:  0;
}

/* ------------------------------------------------------------
   6. PULL-TO-REFRESH INDIKATOR
   ------------------------------------------------------------ */
.ptr-indicator {
  display:         flex;
  justify-content: center;
  align-items:     center;
  height:          48px;
  color:           var(--c-text-muted);
  font-size:       var(--text-sm);
  gap:             var(--space-2);
  overflow:        hidden;
  max-height:      0;
  transition:      max-height var(--transition-normal);
}
.ptr-indicator.visible { max-height: 48px; }

/* ------------------------------------------------------------
   7. RESPONSIVE GRID
   ------------------------------------------------------------ */
.grid-2 {
  display:               grid;
  grid-template-columns: 1fr 1fr;
  gap:                   var(--space-3);
}
.grid-3 {
  display:               grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap:                   var(--space-3);
}

@media (max-width: 400px) {
  .grid-3 { grid-template-columns: 1fr 1fr; }
}

/* ============================================================
   Desktop Multi-Column Layouts (min-width: 1024px)
   ============================================================ */
@media (min-width: 1024px) {

  /* Etwas breiterer Standard-Container auf großen Screens */
  .page-container { max-width: 860px; }

  /* ----------------------------------------------------------
     WELCOME: 2-spaltige Feature-Sections, zentrierter Hero
     ---------------------------------------------------------- */
  .welcome-layout { max-width: 920px; }

  .welcome-sections {
    display:               grid;
    grid-template-columns: 1fr 1fr;
    gap:                   var(--space-4);
    align-items:           start;
  }

  .welcome-sections .card { margin-bottom: 0; }

  /* ----------------------------------------------------------
     WALKS: Liste (links) + Karte (rechts) nebeneinander
     ---------------------------------------------------------- */
  #page-walks .page-container { max-width: 860px; }

  .walks-layout {
    flex-direction: row;
    align-items:    stretch;
  }

  /* View-Toggle auf Desktop nicht nötig */
  .walks-view-toggle { display: none; }

  /* Beide Panels immer sichtbar */
  #walks-list-view,
  #walks-map-view {
    display:        flex !important;
    flex-direction: column;
  }

  #walks-list-view {
    width:        340px;
    flex-shrink:  0;
    border-right: 1px solid var(--c-border-light);
  }

  #walks-map-view { flex: 1; }

  /* Toolbar-Zeile kompakter da Toggle wegfällt */
  #page-walks .by-toolbar { padding: var(--space-2) var(--space-4); }

  /* ----------------------------------------------------------
     CHAT: Split-Pane zentriert mit max-width
     ---------------------------------------------------------- */
  #page-chat .page-body {
    display:         flex;
    flex-direction:  column;
    align-items:     stretch;
    max-width:       860px;
    margin:          0 auto;
    width:           100%;
  }

  #chat-split { min-height: 600px; }

  /* ----------------------------------------------------------
     FORUM: Rubriken über volle Breite, Threads darunter
     ---------------------------------------------------------- */
  #page-forum .page-container { max-width: 860px; }

  /* Rubriken auf genau 2 Zeilen verteilen, zentriert
     — #page-forum nötig für Spezifität > .by-tabs (components.css lädt später) */
  #page-forum .forum-category-tabs {
    display:               grid;
    grid-template-columns: repeat(var(--forum-tab-cols, 7), minmax(0, 1fr));
    overflow:              visible;
    gap:                   var(--space-1);
    padding-bottom:        var(--space-2);
  }

  #page-forum .forum-category-tabs .by-tab {
    justify-content: center;
    text-align:      center;
    white-space:     nowrap;
    overflow:        hidden;
    text-overflow:   ellipsis;
  }

  /* Gesundheit: Tabs auf 2 Zeilen */
  #page-health .by-tabs {
    display:               grid;
    grid-template-columns: repeat(var(--health-tab-cols, 5), minmax(0, 1fr));
    overflow:              visible;
    gap:                   var(--space-1);
    padding-bottom:        var(--space-2);
  }
  #page-health .by-tabs .by-tab {
    justify-content: center;
    text-align:      center;
    white-space:     nowrap;
  }

  /* Admin: Tabs auf 2 Zeilen */
  #page-admin .adm-tabs {
    display:               grid;
    grid-template-columns: repeat(var(--adm-tab-cols, 4), minmax(0, 1fr));
    overflow:              visible;
    gap:                   var(--space-1);
    padding-bottom:        var(--space-2);
  }
  #page-admin .adm-tabs .by-tab {
    justify-content: center;
    text-align:      center;
    white-space:     nowrap;
  }

  /* Übungen: Tabs auf 2 Zeilen */
  #page-uebungen #ueb-tabs {
    display:               grid;
    grid-template-columns: repeat(var(--ueb-tab-cols, 5), minmax(0, 1fr));
    overflow:              visible;
    gap:                   var(--space-1);
    padding-bottom:        var(--space-2);
  }
  #page-uebungen #ueb-tabs .by-tab {
    justify-content: center;
    text-align:      center;
    white-space:     nowrap;
  }

  /* Karte: Legende auf 2 Zeilen
     — #page-map nötig für Spezifität > .map-legend (components.css lädt später) */
  #page-map .map-legend {
    display:               grid;
    grid-template-columns: repeat(var(--map-legend-cols, 8), minmax(0, 1fr));
    overflow:              visible;
    gap:                   var(--space-1);
  }
  #page-map .map-legend-btn {
    justify-content: center;
  }

  /* Suche + Threads volle Breite */
  .forum-main-col {
    display:        flex;
    flex-direction: column;
    gap:            var(--space-3);
  }

}

/* ============================================================
   Phosphor Icons — SVG Sprite
   ============================================================ */
.ph-icon {
  width: 20px;
  height: 20px;
  display: inline-block;
  vertical-align: middle;
  fill: currentColor;
  flex-shrink: 0;
}
.nav-item .ph-icon       { width: 24px; height: 24px; }
.nav-item-center .ph-icon { width: 22px; height: 22px; }
.header-menu-btn .ph-icon { width: 22px; height: 22px; }