/* ============================================
  MD3 Navigation Drawer (CANONICAL)
   ============================================
  Modal (Compact/Medium) & Standard (Expanded)
   Farbe: surface (wie md3_preview navigation)
   ============================================ */

/* ============================================
   Drawer Elevation Tokens (App-spezifisch)
   ============================================
   Einheitliche Elevation für geöffneten Drawer:
   - Level 3 während UND nach Animation
   - Kein Schatten-Wechsel zwischen Zuständen
   ============================================ */
:root {
  --drawer-elevation-open: var(--elev-3);
  --drawer-elevation-closed: none;
}

/* ============================================
   Common Drawer Styles
   ============================================ */

.md3-navigation-drawer {
  display: flex;
  flex-direction: column;
  background: var(--md-sys-color-surface);
  color: var(--md-sys-color-on-surface);
  width: 280px; /* MD3 Standard Drawer Width */
  height: 100vh; /* Full viewport height, NOT page height */
  max-height: 100vh;
  overflow-y: auto;
  overflow-x: hidden;
  position: relative; /* For proper stacking */
  /* Einheitliche Elevation für geöffneten Drawer - mit Fallback */
  box-shadow: var(--drawer-elevation-open, var(--elev-3));
}

.md3-navigation-drawer__container {
  display: flex;
  flex-direction: column;
  height: 100vh; /* Full viewport height */
  max-height: 100vh;
  /* Background ZURÜCK auf Container - ist nötig für zusammenhängendes Aussehen */
  background: var(--md-sys-color-surface);
  color: var(--md-sys-color-on-surface);
  overflow-y: auto;
  overflow-x: hidden;
}

/* in static/css/md3/components/navigation-drawer.css */
.md3-navigation-drawer hr.md3-divider {
  border: 0;
  border-top: 1px solid var(--md-sys-color-outline-variant, rgba(0,0,0,0.08));
  margin: var(--space-3, 0.65rem) 0;
}

/* ============================================
   Header with Logo
   ============================================ */

.md3-navigation-drawer__header {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6) var(--space-4);
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
}

/* Logo Container - Neutraler, nicht-fokussierbarer Container */
.md3-navigation-drawer__logo-container {
  display: block;
  /* Keine Fokus-, Hover- oder Border-Styles */
  outline: none !important;
  border: none !important;
  box-shadow: none !important;
  background: transparent !important;
  padding: 0;
  margin: 0;
  cursor: default;
}

/* Legacy Link Support - komplett unsichtbar machen */
.md3-navigation-drawer__logo-link {
  display: block;
  text-decoration: none;
  /* Alle visuellen Effekte entfernen */
  outline: none !important;
  border: none !important;
  box-shadow: none !important;
  background: transparent !important;
  -webkit-tap-highlight-color: transparent;
  cursor: pointer;
}

/* KEIN Focus-Indikator auf dem Logo */
.md3-navigation-drawer__logo-link:focus,
.md3-navigation-drawer__logo-link:focus-visible,
.md3-navigation-drawer__logo-container:focus,
.md3-navigation-drawer__logo-container:focus-visible {
  outline: none !important;
  box-shadow: none !important;
  border: none !important;
}

/* KEIN Hover-Effekt auf dem Logo */
.md3-navigation-drawer__logo-link:hover,
.md3-navigation-drawer__logo-container:hover {
  background: transparent !important;
  outline: none !important;
  box-shadow: none !important;
}

.md3-navigation-drawer__logo {
  height: 48px;
  width: auto;
  display: block;
  /* Keine Border/Outline auf dem Bild selbst */
  border: none;
  outline: none;
}

/* ============================================
   Navigation Content
   ============================================ */

.md3-navigation-drawer__content {
  flex: 1;
  padding: var(--space-2) 0;
  overflow-y: auto;
}

/* ============================================
   Navigation Items
   ============================================ */

.md3-navigation-drawer__item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border: none;
  background: transparent;
  color: var(--md-sys-color-on-surface);
  font-family: var(--md-sys-typescale-body-large-font-family);
  font-size: var(--md-sys-typescale-body-large-font-size);
  font-weight: var(--md-sys-typescale-body-large-font-weight);
  line-height: var(--md-sys-typescale-body-large-line-height);
  letter-spacing: var(--md-sys-typescale-body-large-letter-spacing);
  text-decoration: none;
  text-align: left;
  cursor: pointer;
  border-radius: var(--radius-sm);
  margin: var(--space-1) var(--space-3);
  transition:
    background-color 0.2s ease,
    color 0.2s ease;
  min-height: 48px; /* Touch target */
}

.md3-navigation-drawer__item:hover {
  background: var(--md-sys-color-surface-container-high);
}

.md3-navigation-drawer__item:focus-visible {
  outline: 2px solid var(--md-sys-color-primary);
  outline-offset: -2px;
}

/* Active State - ARIA-first mit Fallback-Klasse */
.md3-navigation-drawer__item[aria-current="page"],
.md3-navigation-drawer__item--active {
  color: var(--md-sys-color-primary);
  background: color-mix(in oklab, var(--md-sys-color-primary) 10%, transparent);
  font-weight: 600;
}

.md3-navigation-drawer__item[aria-current="page"]:hover,
.md3-navigation-drawer__item--active:hover {
  background: color-mix(in oklab, var(--md-sys-color-primary) 15%, transparent);
}

/* Icon */
.md3-navigation-drawer__icon {
  flex-shrink: 0;
  font-size: 24px;
  width: 24px;
  height: 24px;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Chevron for collapsible items */
.md3-navigation-drawer__chevron {
  flex-shrink: 0;
  font-size: 20px;
  width: 20px;
  height: 20px;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 200ms ease;
}

/* Label */
.md3-navigation-drawer__label {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.md3-navigation-drawer__trigger[aria-expanded="true"]
  .md3-navigation-drawer__chevron {
  transform: rotate(180deg);
}

/* Wenn Submenu-Item aktiv ist, Trigger im Hover-State anzeigen */
.md3-navigation-drawer__item--active.md3-navigation-drawer__trigger {
  background: var(--md-sys-color-surface-container-high);
}

/* ============================================
   Collapsible Submenu - MD3 Accordion
   ============================================
   Grid-basiert (0fr → 1fr) + Opacity für smooth Animation
   GPU-freundlich, keine Timer, kein max-height Hack
   ============================================ */

.md3-navigation-drawer__collapsible {
  display: flex;
  flex-direction: column;
  width: 100%;
  margin: 0;
  padding: 0; /* Kein zusätzlicher Spacing */
  gap: 0; /* Kein Gap zwischen Trigger und Submenu */
}

/* Trigger Button: Chevron rotiert (erbt .md3-navigation-drawer__item Styles) */
.md3-navigation-drawer__chevron {
  transition: rotate var(--dur, 250ms)
    var(--md-ease, cubic-bezier(0.4, 0, 0.2, 1));
  rotate: 0deg;
}

.md3-navigation-drawer__trigger[aria-expanded="true"]
  .md3-navigation-drawer__chevron {
  rotate: 180deg;
}

/* Submenu: Grid-Accordion (0fr → 1fr) - Ohne .closing Klasse */
.md3-navigation-drawer__submenu {
  display: grid;
  grid-template-rows: 0fr; /* Collapsed State */
  transition:
    grid-template-rows var(--dur, 250ms)
      var(--md-ease, cubic-bezier(0.4, 0, 0.2, 1)),
    opacity var(--dur, 250ms) var(--md-ease, cubic-bezier(0.4, 0, 0.2, 1));
  opacity: 0;
  overflow: clip; /* Verhindert Bleeding ohne Scroll-Container */
  will-change: grid-template-rows, opacity;
  margin: 0;
  padding: 0;
}

/* Open State: via [data-open] Attribut */
.md3-navigation-drawer__submenu[data-open] {
  grid-template-rows: 1fr; /* Expanded State */
  opacity: 1;
}

/* Inner Content Wrapper: nötig für 0fr-Kollaps */
.md3-navigation-drawer__submenu-inner {
  overflow: hidden;
  min-height: 0; /* Wichtig für Grid-Kollaps */
  padding-top: 0;
  padding-bottom: 0;
  transition: padding var(--dur, 250ms)
    var(--md-ease, cubic-bezier(0.4, 0, 0.2, 1));
}

/* Padding nur im geöffneten Zustand */
.md3-navigation-drawer__submenu[data-open]
  .md3-navigation-drawer__submenu-inner {
  padding-top: var(--space-1);
  padding-bottom: var(--space-1);
}

/* Entry Animation: @starting-style für smooth Fade-In */
@starting-style {
  .md3-navigation-drawer__submenu[data-open] {
    grid-template-rows: 0fr;
    opacity: 0;
  }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  .md3-navigation-drawer__chevron,
  .md3-navigation-drawer__submenu {
    transition: none;
  }
}

/* ============================================
   Preload Guard: Keine Transitions beim Page-Load
   ============================================
   Verhindert Accordion-Animationen beim initialen Render
   ============================================ */

/* Initial kein Transition-Jump beim Page-Load */
body.preload .md3-navigation-drawer__submenu,
body.preload .md3-navigation-drawer__submenu-inner,
body.preload .md3-navigation-drawer__chevron,
html:not([data-anim-ready="1"]) .md3-navigation-drawer__submenu,
html:not([data-anim-ready="1"]) .md3-navigation-drawer__submenu-inner,
html:not([data-anim-ready="1"]) .md3-navigation-drawer__chevron {
  transition: none !important;
}

/* ============================================
   Turbo Drive: Instant State Changes
   ============================================
   Verhindert Accordion-Animationen bei Route-Changes
   ============================================ */

/* Hydration Guard: Während Turbo-Render keine Transitions */
#navigation-drawer[data-hydrating] .md3-navigation-drawer__submenu,
#navigation-drawer[data-hydrating] .md3-navigation-drawer__submenu-inner,
#navigation-drawer[data-hydrating] .md3-navigation-drawer__chevron {
  transition: none !important;
}

/* Legacy: Globale Bremse für alle Accordion-Übergänge (falls noch genutzt) */
#navigation-drawer.no-anim .md3-navigation-drawer__submenu,
#navigation-drawer.no-anim .md3-navigation-drawer__submenu-inner,
#navigation-drawer.no-anim .md3-navigation-drawer__chevron {
  transition: none !important;
}

/* Einzelelement instant öffnen (granular) */
.md3-navigation-drawer__submenu[data-instant] {
  transition: none !important;
}

.md3-navigation-drawer__submenu[data-instant]
  .md3-navigation-drawer__submenu-inner {
  transition: none !important;
}

.md3-navigation-drawer__subitem {
  display: flex;
  align-items: center;
  padding: var(--space-2) var(--space-4);
  padding-left: calc(var(--space-1) + var(--space-4));
  margin: var(--space-1) var(--space-3);
  margin-left: calc(var(--space-3) + var(--space-6));
  color: var(--md-sys-color-on-surface-variant);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition:
    background-color 0.2s ease,
    color 0.2s ease;
  min-height: 40px;
}

.md3-navigation-drawer__subitem:hover {
  background: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface);
  /* Einrückung bleibt beim Hover erhalten */
}

/* Subitem Active State - ARIA-first mit Fallback-Klasse */
.md3-navigation-drawer__subitem[aria-current="page"],
.md3-navigation-drawer__subitem--active {
  color: var(--md-sys-color-primary);
  background: color-mix(in oklab, var(--md-sys-color-primary) 10%, transparent);
  font-weight: 600;
}

/* ============================================
   Divider
   ============================================ */

.md3-navigation-drawer__divider {
  height: 1px;
  background: var(--md-sys-color-outline-variant);
  margin: var(--space-2) var(--space-4);
}

/* ============================================
   Footer Navigation (Login/Logout)
   ============================================ */

.md3-navigation-drawer__footer {
  padding: var(--space-2) 0 var(--space-4) 0;
  border-top: 1px solid var(--md-sys-color-outline-variant);
  /* Wrapper wie bei Content */
  display: flex;
  flex-direction: column;
  width: 100%;
}

/* Footer Items: KEINE speziellen Overrides - erben von .md3-navigation-drawer__item */
/* Nur Logout bekommt rote Farbe */

/* Logout Link - Spezielle Farbe (roter Text) - höhere Spezifizität */
.md3-navigation-drawer__item--logout {
  color: var(--md-sys-color-error);
}

.md3-navigation-drawer__item--logout:hover {
  background: color-mix(in srgb, var(--md-sys-color-error) 12%, transparent);
  color: var(--md-sys-color-error);
}

/* Logout überschreibt auch Active-State */
.md3-navigation-drawer__item--logout[aria-current="page"],
.md3-navigation-drawer__item--logout.md3-navigation-drawer__item--active {
  color: var(--md-sys-color-error);
  background: color-mix(in srgb, var(--md-sys-color-error) 12%, transparent);
  font-weight: 600;
}

.md3-navigation-drawer__item--logout[aria-current="page"]:hover,
.md3-navigation-drawer__item--logout.md3-navigation-drawer__item--active:hover {
  background: color-mix(in srgb, var(--md-sys-color-error) 20%, transparent);
}

/* Account Item with Avatar (falls benötigt) */
.md3-navigation-drawer__item--account {
  font-weight: 600;
}

.md3-navigation-drawer__avatar {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
  font-size: 0.875rem;
  font-weight: 600;
  flex-shrink: 0;
}

/* ============================================
   Modal Drawer (Compact/Medium) - <dialog>-basiert
   ============================================
   Moderne Lösung mit nativer Dialog-API
   Chrome 117+, Firefox 129+, Safari 17.4+
   ============================================ */

/* MD3 Motion Tokens */
:root {
  --md-ease: cubic-bezier(0.4, 0, 0.2, 1);
  --dur: 250ms;
}

/* Dialog-Reset */
.drawer {
  border: 0;
  padding: 0;
  width: auto;
  max-width: none;
  background: transparent; /* Panel hat eigenen Hintergrund */
  /* diskrete Sichtbarkeit, kein Flash */
  transition: visibility var(--dur) var(--md-ease);
  transition-behavior: allow-discrete;
  visibility: hidden;
}

.drawer[open] {
  visibility: visible;
}

/* Backdrop (Scrim) des Dialogs */
.drawer::backdrop {
  background: rgb(0 0 0 / 40%);
  opacity: 0;
  transition: opacity var(--dur) var(--md-ease);
  will-change: opacity;
}

/* Panel: links reinfahren */
.drawer__panel {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  width: 280px;
  background: var(--md-sys-color-surface, #fff);
  color: var(--md-sys-color-on-surface);
  translate: -100% 0; /* statt transform: klarer für Komposition */
  transition: translate var(--dur) var(--md-ease);
  will-change: translate;
  contain: paint;
  /* Einheitliche Elevation: Level 3 - gleich während UND nach Animation */
  box-shadow: var(--drawer-elevation-open, var(--elev-3));
  overflow-y: auto; /* eigener Scroll, kein Body-Lock nötig */
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  height: 100vh;
  max-height: 100vh;
}

/* Offener Zustand */
.drawer[open]::backdrop {
  opacity: 1;
}

.drawer[open] .drawer__panel {
  translate: 0 0;
}

/* Closing State: Exit-Animation */
.drawer.closing::backdrop {
  opacity: 0;
}

.drawer.closing .drawer__panel {
  translate: -100% 0;
}

/* ============================================
   Einheitliche Elevation während Animation
   ============================================
   Der Schatten bleibt Level 3 in ALLEN Zuständen:
   - Öffnen (slide-in)
   - Offen (final)
   - Schließen (slide-out)
   Kein Schatten-Wechsel, keine Animation auf box-shadow.
   ============================================ */
.drawer[open] .drawer__panel,
.drawer.closing .drawer__panel {
  /* Schatten bleibt konstant - keine Transition auf box-shadow */
  box-shadow: var(--drawer-elevation-open, var(--elev-3));
}

/* Erster Frame ohne JS-Timer */
@starting-style {
  .drawer[open]::backdrop {
    opacity: 0;
  }

  .drawer[open] .drawer__panel {
    translate: -100% 0;
  }
}

/* MD3 Motion: Reduced Motion respektieren */
@media (prefers-reduced-motion: reduce) {
  .drawer::backdrop,
  .drawer__panel {
    transition: none;
  }
}

/* Optional: RTL-Unterstützung */
:root[dir="rtl"] .drawer__panel {
  left: auto;
  right: 0;
  translate: 100% 0;
}

:root[dir="rtl"] .drawer[open] .drawer__panel {
  translate: 0 0;
}

@starting-style {
  :root[dir="rtl"] .drawer[open] .drawer__panel {
    translate: 100% 0;
  }
}

/* Nur auf < 840px anzeigen, sonst Drawer-Variante für Expanded verwenden */
@media (min-width: 840px) {
  .drawer {
    display: none;
  }
}

/* ============================================
   Standard Drawer (Expanded - Desktop ≥840px)
   ============================================
   
   Der Desktop-Drawer hat eine permanente Elevation (Level 1).
   Schatten ist NACH RECHTS orientiert, sichtbar auf dem Main-Content.
   Kein border-right mehr nötig - Shadow übernimmt die visuelle Trennung.
   
   Voraussetzung: body.app-shell verwendet overflow:clip statt overflow:hidden,
   damit der Schatten außerhalb der Grid-Zelle sichtbar ist.
   ============================================ */

.md3-navigation-drawer.md3-navigation-drawer--standard {
  position: sticky;
  top: 0; /* Sticky kleben bei top:0 */
  align-self: flex-start; /* Prevent stretching in grid */
  height: 100vh; /* Full viewport height */
  max-height: 100vh;
  /* Desktop Drawer Elevation: Level 1 - nach rechts orientierter Schatten */
  box-shadow:
    1px 0 3px rgba(0, 0, 0, 0.08),
    4px 0 8px rgba(0, 0, 0, 0.06);
  /* WICHTIG: Keine Transitions - Standard Drawer animiert NICHT */
  transition: none !important;
}

.md3-navigation-drawer--standard .md3-navigation-drawer__container {
  /* WICHTIG: Keine Transitions auf Container im Standard Drawer */
  transition: none !important;
  transform: none !important;
}

/* Hide by default, show only on Expanded */
.md3-navigation-drawer--standard {
  display: none;
}

@media (min-width: 840px) {
  .md3-navigation-drawer--standard {
    display: flex;
  }

  /* Hide modal drawer on Expanded */
  .md3-navigation-drawer--modal {
    display: none;
  }
}

/* ============================================
   Accessibility
   ============================================ */

/* Focus visible styles already defined above */

/* Screen reader only class */
.md3-navigation-drawer .sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ============================================
   Dark Theme Support
   ============================================ */

.theme-dark .md3-navigation-drawer {
  background: var(--md-sys-color-surface-container);
}

.theme-dark .md3-navigation-drawer__container {
  background: var(--md-sys-color-surface-container);
}

/* ============================================
   Animations & Transitions
   ============================================ */

/* Reduced Motion für Submenu */
@media (prefers-reduced-motion: reduce) {
  .md3-navigation-drawer__submenu {
    transition: none;
  }
}

/* Custom properties for JS control */
:root {
  --drawer-width: 280px;
  --drawer-transition-duration: 300ms;
  --drawer-transition-easing: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   Drawer Slide-In Animation (triggered via JS)
   ============================================ */

@keyframes drawerSlideIn {
  from {
    transform: translateX(-100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.md3-navigation-drawer--standard.pending-slide-in {
  transform: translateX(-100%);
  opacity: 0;
}

.md3-navigation-drawer--standard.animate-slide-in {
  animation: drawerSlideIn 0.6s cubic-bezier(0.2, 0, 0, 1) forwards;
}