/* ============================================
   MD3 NAVBAR COMPONENT
   Migrated from md3-components.css
   ============================================ */

/* Main Navigation */
.md3-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--app-background);
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  box-shadow: var(none);
}

.md3-nav__inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--space-3) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.md3-nav__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-4);
}

.md3-nav__logo {
  width: clamp(100px, 15vw, 140px);
  height: auto;
  border-radius: var(--radius-sm);
}

.md3-nav__logo-link {
  display: inline-flex;
  text-decoration: none;
}

.md3-nav__links {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.md3-nav__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2) var(--space-4);
  border-radius: 9999px;
  color: var(--md-sys-color-on-surface);
  text-decoration: none;
  font-size: var(--md-sys-typescale-label-large-font-size);
  font-weight: var(--md-sys-typescale-label-large-font-weight);
  line-height: var(--md-sys-typescale-label-large-line-height);
  letter-spacing: var(--md-sys-typescale-label-large-letter-spacing);
  transition:
    background 200ms cubic-bezier(0.2, 0, 0, 1),
    color 200ms cubic-bezier(0.2, 0, 0, 1);
  position: relative;
}

.md3-nav__link::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 9999px;
  background: var(--md-sys-color-primary);
  opacity: 0;
  transition: opacity 200ms cubic-bezier(0.2, 0, 0, 1);
}

.md3-nav__link:hover::before {
  opacity: 0.08;
}

.md3-nav__link:hover {
  color: var(--md-sys-color-primary);
}

.md3-nav__link--active {
  color: var(--md-sys-color-primary);
  background: var(--md-sys-color-primary-container);
}

.md3-nav__actions {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.md3-nav__mobile-toggle {
  display: none;
}

/* Submenu für Dropdown-Links */
.md3-nav__link-with-menu {
  position: relative;
}

.md3-nav__trigger {
  background: transparent;
  border: none;
  cursor: pointer;
}

.md3-nav__trigger-icon {
  font-size: 0.7em;
  margin-left: 0.25em;
}

.md3-nav__submenu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  background: var(--md-sys-color-surface-container-high);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--radius-md);
  box-shadow: var(var(--elev-2));
  padding: var(--space-2);
  margin-top: var(--space-2);
  z-index: 150;
}

.md3-nav__submenu ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.md3-nav__submenu-link {
  display: block;
  padding: var(--space-3) var(--space-4);
  color: var(--md-sys-color-on-surface);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: background 200ms cubic-bezier(0.2, 0, 0, 1);
}

.md3-nav__submenu-link:hover {
  background: var(--md-sys-color-surface-container);
}

.md3-nav__submenu-link.md3-nav__link--active {
  background: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-primary);
  font-weight: 500;
}

/* ============================================
   USER MENU DROPDOWN
   ============================================ */

.md3-user-menu {
  position: relative;
}

.md3-user-menu__toggle {
  padding: 0;
}

.md3-user-avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(9999px);
  background: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-primary);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1px;
}

.md3-user-avatar--lg {
  width: 40px;
  height: 40px;
  font-size: 14px;
}

.md3-user-menu__dropdown {
  position: absolute;
  top: calc(100% + var(--space-2));
  right: 0;
  min-width: 240px;
  padding: var(--space-4);
  border-radius: var(--radius-md);
  background: var(--md-sys-color-surface-container-high);
  border: 1px solid var(--md-sys-color-outline-variant);
  box-shadow: var(var(--elev-2));
  display: grid;
  gap: var(--space-3);
  z-index: 150;
}

.md3-user-menu__profile {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
}

.md3-user-menu__details {
  display: grid;
  gap: var(--space-1);
  min-width: 0;
}

.md3-user-menu__name {
  color: var(--md-sys-color-on-surface);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.md3-user-menu__role {
  color: var(--md-sys-color-on-surface-variant);
  text-transform: uppercase;
}

.md3-user-menu__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-1);
}

.md3-user-menu__form {
  margin: 0;
}

.md3-user-menu__link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  width: 100%;
  padding: var(--space-3);
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--md-sys-color-on-surface);
  background: transparent;
  border: none;
  cursor: pointer;
  text-align: left;
  transition: background 200ms cubic-bezier(0.2, 0, 0, 1);
  position: relative;
}

.md3-user-menu__link::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius-sm);
  background: var(--md-sys-color-on-surface);
  opacity: 0;
  transition: opacity 200ms cubic-bezier(0.2, 0, 0, 1);
}

.md3-user-menu__link:hover::before {
  opacity: 0.08;
}

.md3-user-menu__link i {
  font-size: 1.1rem;
  width: 20px;
  text-align: center;
}

.md3-user-menu__link--danger {
  color: var(--md-sys-color-error);
}

.md3-user-menu__link--danger::before {
  background: var(--md-sys-color-error);
}

/* ============================================
   MOBILE MENU
   ============================================ */

.md3-mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 1300;
  --mobile-menu-duration: var(350ms);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition:
    opacity var(--mobile-menu-duration) cubic-bezier(0.2, 0, 0, 1),
    visibility 0s linear var(--mobile-menu-duration);
}

.md3-mobile-menu.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transition:
    opacity var(--mobile-menu-duration) cubic-bezier(0.2, 0, 0, 1),
    visibility 0s;
}

.md3-mobile-menu__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--mobile-menu-duration) cubic-bezier(0.2, 0, 0, 1);
}

.md3-mobile-menu.is-open .md3-mobile-menu__backdrop {
  opacity: 1;
  pointer-events: auto;
}

.md3-mobile-menu__panel {
  position: absolute;
  inset: 0 auto 0 0;
  width: min(320px, 80vw);
  background: var(--color-header); /* #eaf3f5 - gleich wie Header */
  box-shadow: var(var(--elev-2));
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-5);
  max-height: 100vh;
  overflow: hidden;
  overscroll-behavior: contain;
  transform: translateX(-100%);
  transition: transform var(--mobile-menu-duration)
    var(cubic-bezier(0.4, 0, 0.2, 1));
  will-change: transform;
}

.md3-mobile-menu.is-open .md3-mobile-menu__panel {
  transform: translateX(0);
}

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

.md3-mobile-menu__logo {
  color: var(--md-sys-color-primary);
  font-size: 22px;
  font-weight: 500;
  text-decoration: none;
}

.md3-mobile-menu__logo-link {
  display: inline-flex;
  text-decoration: none;
}

.md3-mobile-menu__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  overscroll-behavior: contain;
  padding: var(--space-2) 0;
  margin-right: var(--space-2);
}

.md3-mobile-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px var(--space-4);
  min-height: 40px;
  border-radius: var(--radius-sm);
  color: var(--md-sys-color-on-surface);
  text-decoration: none;
  font-size: 14px;
  letter-spacing: 0.1px;
  background: transparent;
  border: none;
  text-align: left;
  cursor: pointer;
  transition: background 200ms cubic-bezier(0.2, 0, 0, 1);
}

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

.md3-mobile-link--active {
  background: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-primary);
  font-weight: 500;
}

.md3-mobile-link--button {
  width: 100%;
}

/* Mobile Collapsible (Accordion-style for nav children) */
.md3-mobile-collapsible {
  display: flex;
  flex-direction: column;
}

.md3-mobile-collapsible__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

.md3-mobile-link__text {
  flex: 1;
}

.md3-mobile-link__chevron {
  font-size: 0.75rem;
  transition: transform var(250ms) var(cubic-bezier(0.4, 0, 0.2, 1));
  color: var(--md-sys-color-on-surface-variant);
  flex-shrink: 0;
}

.md3-mobile-collapsible__trigger[aria-expanded="true"]
  .md3-mobile-link__chevron {
  transform: rotate(180deg);
}

.md3-mobile-collapsible__content {
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  transition:
    max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1),
    opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.md3-mobile-collapsible__content.is-expanded {
  max-height: 600px;
  opacity: 1;
}

.md3-mobile-collapsible__items {
  display: flex;
  flex-direction: column;
  padding-top: var(--space-1);
}

.md3-mobile-link--child {
  padding: 10px var(--space-4) 10px var(--space-7);
  min-height: 36px;
  font-size: 14px;
  color: var(--md-sys-color-on-surface-variant);
  margin-left: var(--space-3);
  margin-right: var(--space-1);
  border-radius: var(--radius-sm);
  transition: all 200ms cubic-bezier(0.2, 0, 0, 1);
}

.md3-mobile-link--child:hover {
  background: var(--md-sys-color-surface-container);
  color: var(--md-sys-color-on-surface);
}

.md3-mobile-link--child.md3-mobile-link--active {
  background: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-primary);
  font-weight: 500;
}

.md3-mobile-menu__footer {
  margin-top: auto;
  padding-top: var(--space-4);
  border-top: 1px solid var(--md-sys-color-outline-variant);
  display: grid;
  gap: var(--space-3);
}

.md3-mobile-account {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  background: var(--md-sys-color-surface-container-high);
  border-radius: var(--radius-sm);
}

.md3-mobile-account i {
  font-size: 1.2rem;
  color: var(--md-sys-color-primary);
}

.md3-mobile-menu form {
  margin: 0;
}

.md3-mobile-menu form button {
  width: 100%;
}

/* ============================================
   RESPONSIVE BREAKPOINTS
   ============================================ */

/* Mobile: < 600px */
@media (max-width: 599px) {
  .md3-nav__links {
    display: none;
  }

  .md3-nav__mobile-toggle {
    display: inline-flex;
  }
}

/* Medium: 600-839px */
@media (min-width: 600px) and (max-width: 839px) {
  .md3-nav__links {
    gap: var(--space-1);
  }

  .md3-nav__link {
    padding: var(--space-2) var(--space-3);
    font-size: 12px;
  }
}