/* ── Host ─────────────────────────────────────────────────────────── */
app-header {
  display: block;
  position: sticky;
  inset-block-start: 0;
  z-index: var(--z-header);

  .app-header__bar {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: var(--space-4);
    padding-inline: var(--space-5);
    block-size: var(--header-height);
    background: var(--color-table-header-bg);
    color: var(--color-table-header-text);
    box-sizing: border-box;
  }

  /* ── Start cluster (drawer trigger + logo) ───────────────────────── */
  .app-header__start {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    min-inline-size: 0;
  }

  .app-header__icon-btn {
    inline-size: 40px;
    block-size: 40px;
    border-radius: var(--radius-full);
    border: none;
    background: rgba(255, 255, 255, 0.1);
    color: inherit;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    transition: background var(--transition-hover);

    &:hover {
      background: rgba(255, 255, 255, 0.2);
    }

    &:focus-visible {
      outline: 2px solid var(--color-focus);
      outline-offset: 2px;
    }

    svg {
      inline-size: 20px;
      block-size: 20px;
    }

    &.app-header__icon-btn--active {
      background: rgba(255, 255, 255, 0.24);
    }
  }

  .app-header__logo {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
    padding-block: var(--space-1);
    padding-inline: var(--space-2);
    border-radius: var(--radius-input);

    &:hover {
      background: rgba(255, 255, 255, 0.08);
    }
  }

  .app-header__logo-img {
    block-size: 28px;
    inline-size: auto;
    margin-top: -10px;
  }

  /* ── Center cluster (flat main nav) ──────────────────────────────── */
  .app-header__nav {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    justify-content: center;
    min-inline-size: 0;
  }

  .app-header__nav-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    inline-size: 18px;
    block-size: 18px;
    opacity: 0.7;

    svg {
      inline-size: 100%;
      block-size: 100%;
    }
  }

  .app-header__nav-link {
    background: transparent;
    border: none;
    color: #fff;
    text-decoration: none;
    font: inherit;
    letter-spacing: inherit;
    font-weight: 500;
    padding-block: var(--space-2);
    padding-inline: var(--space-4);
    border-radius: 12px;
    cursor: pointer;
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    transition: background var(--transition-hover);

    &:hover {
      background: rgba(255, 255, 255, 0.1);
    }

    &:focus-visible {
      outline: 2px solid var(--color-focus);
      outline-offset: 2px;
    }

    &.app-header__nav-link--active {
      background: rgba(255, 255, 255, 0.18);
      color: #fff;
    }
  }

  /* ── Admin dropdown ──────────────────────────────────────────────── */
  .app-header__admin {
    position: relative;

    summary {
      list-style: none;
      cursor: pointer;
      background: transparent;
      color: #fff;
      font: inherit;
      letter-spacing: inherit;
      font-weight: 500;
      padding-block: var(--space-2);
      padding-inline: var(--space-4);
      border-radius: 12px;
      display: inline-flex;
      align-items: center;
      gap: var(--space-2);
      white-space: nowrap;

      &::-webkit-details-marker {
        display: none;
      }

      &::marker {
        content: "";
      }

      &:hover {
        background: rgba(255, 255, 255, 0.1);
      }
    }

    &[open] > summary {
      background: rgba(255, 255, 255, 0.18);
    }
  }

  .app-header__admin__panel {
    position: absolute;
    inset-block-start: calc(100% + 4px);
    inset-inline-start: 0;
    min-inline-size: 220px;
    background: var(--color-surface);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-modal);
    z-index: var(--z-dropdown);
    overflow: hidden;
    padding-block: var(--space-1);
  }

  .app-header__admin__item {
    display: block;
    inline-size: 100%;
    padding-block: var(--space-3);
    padding-inline: var(--space-4);
    background: var(--color-surface);
    border: 0;
    color: var(--color-text);
    text-decoration: none;
    font: inherit;
    letter-spacing: inherit;
    text-align: start;
    cursor: pointer;
    transition: background var(--transition-hover);

    &:hover {
      background: var(--color-surface-alt);
    }

    &.app-header__admin__item--active {
      color: var(--color-primary-500);
      font-weight: 600;
    }
  }

  /* ── End cluster (actions + user menu) ────────────────────────────── */
  .app-header__end {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    justify-content: end;
  }

  .app-header__actions {
    display: flex;
    align-items: center;
    gap: var(--space-1);
  }

  .app-header__action-btn {
    position: relative;
  }

  .app-header__badge {
    position: absolute;
    inset-block-start: 2px;
    inset-inline-end: 2px;
    min-inline-size: 18px;
    block-size: 18px;
    border-radius: var(--radius-full);
    background: var(--color-error);
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    line-height: 18px;
    text-align: center;
    padding-inline: 4px;
    box-sizing: border-box;
    pointer-events: none;
  }

  .app-header__user {
    position: relative;

    summary {
      list-style: none;
      cursor: pointer;
      inline-size: 40px;
      block-size: 40px;
      border-radius: var(--radius-full);
      background: rgba(255, 255, 255, 0.1);
      color: inherit;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      transition: background var(--transition-hover);

      &::-webkit-details-marker {
        display: none;
      }

      &::marker {
        content: "";
      }

      &:hover {
        background: rgba(255, 255, 255, 0.22);
      }
    }

  }

  .app-header__user-initials {
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.02em;
    line-height: 1;
    user-select: none;
  }

  .app-header__user__panel {
    position: absolute;
    inset-block-start: calc(100% + 4px);
    inset-inline-end: 0;
    min-inline-size: 220px;
    background: var(--color-surface);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-modal);
    z-index: var(--z-dropdown);
    overflow: hidden;
    padding-block: var(--space-1);
  }

  .app-header__user__item {
    display: block;
    inline-size: 100%;
    padding-block: var(--space-3);
    padding-inline: var(--space-4);
    background: var(--color-surface);
    border: 0;
    color: var(--color-text);
    text-decoration: none;
    font: inherit;
    letter-spacing: inherit;
    text-align: start;
    cursor: pointer;
    transition: background var(--transition-hover);

    &:hover {
      background: var(--color-surface-alt);
    }
  }

  .app-header__user__version {
    padding-block: var(--space-3) 0;
    padding-inline: var(--space-4);
    font-size: var(--font-size-caption);
    color: var(--color-text-muted);
  }

  .app-header__user__name {
    padding-block: var(--space-1) var(--space-3);
    padding-inline: var(--space-4);
    font-size: 13px;
    color: var(--color-text-muted);
    border-block-end: 1px solid var(--color-border);
  }

  /* ── Left drawer ─────────────────────────────────────────────────── */
  .app-header__drawer-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0);
    z-index: calc(var(--z-modal-backdrop) - 1);
    pointer-events: none;
    transition: background-color 200ms linear;
    will-change: background-color;
    transform: translate3d(0, 0, 0) rotate3d(0, 0, 1, 0deg);
    backface-visibility: hidden;
    contain: strict;

    &.is-open {
      background: rgba(0, 0, 0, 0.35);
      pointer-events: auto;
    }
  }

  .app-header__drawer {
    position: fixed;
    inset-block: 0;
    inset-inline-start: 0;
    inline-size: 300px;
    background: var(--color-surface);
    color: var(--color-text);
    z-index: var(--z-modal-backdrop);
    transform: translate3d(-100%, 0, 0) rotate3d(0, 0, 1, 0deg);
    transition: transform 200ms cubic-bezier(0.2, 0.8, 0.2, 1);
    display: flex;
    flex-direction: column;
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.18);
    will-change: transform;
    backface-visibility: hidden;
    perspective: 1000px;
    transform-style: preserve-3d;
    contain: layout paint style;

    &.is-open {
      transform: translate3d(0, 0, 0) rotate3d(0, 0, 1, 0deg);
    }
  }

  html[dir="rtl"] .app-header__drawer {
    transform: translate3d(100%, 0, 0) rotate3d(0, 0, 1, 0deg);
  }

  .app-header__drawer__header {
    block-size: var(--header-height);
    background: var(--color-table-header-bg);
    color: var(--color-table-header-text);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-inline: var(--space-5);
  }

  .app-header__drawer__title {
    font-family: var(--font-display);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .app-header__drawer__body {
    flex: 1 1 auto;
    overflow-y: auto;
    padding-block: var(--space-3);
  }

  .app-header__drawer__section {
    padding-block: var(--space-3) var(--space-2);
    padding-inline: var(--space-5);
    border-block-end: 1px solid var(--color-border);
    margin-block-end: var(--space-2);
  }

  .app-header__drawer__section-label {
    display: block;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-block-end: var(--space-2);
  }

  .app-header__drawer__item {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    inline-size: 100%;
    padding-block: var(--space-4);
    padding-inline: var(--space-5);
    background: var(--color-surface);
    border: 0;
    color: var(--color-text);
    text-decoration: none;
    font: inherit;
    letter-spacing: inherit;
    text-align: start;
    cursor: pointer;
    transition: background var(--transition-hover);

    &:hover,
    &:focus-visible {
      background: var(--color-surface-alt);
      outline: none;
    }
  }

  .app-header__drawer__item-icon {
    inline-size: 40px;
    block-size: 40px;
    border-radius: var(--radius-md);
    background: var(--color-surface-alt);
    color: var(--color-primary-500);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;

    svg {
      inline-size: 20px;
      block-size: 20px;
    }
  }

  .app-header__drawer__item-label {
    font-weight: 500;
  }

  .app-header__drawer__empty {
    padding: var(--space-5);
    color: var(--color-text-muted);
    font-size: 13px;
    text-align: center;
  }

  /* ── Org switcher combobox ───────────────────────────────────────── */
  .app-header__org-combo {
    position: relative;
  }

  .app-header__org-combo__trigger {
    inline-size: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2);
    padding-block: var(--space-2);
    padding-inline: var(--space-3);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg);
    color: var(--color-text);
    font: inherit;
    letter-spacing: inherit;
    font-weight: 500;
    text-align: start;
    cursor: pointer;
    transition: border-color var(--transition-hover);

    &:hover {
      border-color: var(--color-primary-500);
    }

    &.is-open {
      border-color: var(--color-primary-500);
    }
  }

  .app-header__org-combo__trigger-text {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1 1 auto;
    min-inline-size: 0;

    &.app-header__org-combo__trigger-text--placeholder {
      color: var(--color-text-muted);
    }
  }

  .app-header__org-combo__panel {
    position: absolute;
    inset-block-start: calc(100% + 4px);
    inset-inline-start: 0;
    inset-inline-end: 0;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-modal);
    z-index: var(--z-dropdown);
    overflow: hidden;
  }

  .app-header__org-combo__search {
    inline-size: 100%;
    box-sizing: border-box;
    padding-block: var(--space-2);
    padding-inline: var(--space-3);
    border: 0;
    border-block-end: 1px solid var(--color-border);
    background: var(--color-bg);
    color: var(--color-text);
    font: inherit;
    letter-spacing: inherit;
    outline: none;
  }

  .app-header__org-combo__list {
    max-block-size: 240px;
    overflow-y: auto;
    padding-block: var(--space-1);
  }

  .app-header__org-combo__item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    inline-size: 100%;
    padding-block: var(--space-2);
    padding-inline: var(--space-3);
    background: var(--color-surface);
    border: 0;
    color: var(--color-text);
    font: inherit;
    letter-spacing: inherit;
    text-align: start;
    cursor: pointer;
    transition: background var(--transition-hover);

    &:hover {
      background: var(--color-surface-alt);
    }

    &.app-header__org-combo__item--active {
      color: var(--color-primary-500);
      font-weight: 600;
    }
  }

  .app-header__org-combo__empty {
    padding: var(--space-3);
    font-size: 13px;
    color: var(--color-text-muted);
    text-align: center;
  }

  /* ── Mobile module nav (hamburger on the right) ──────────────────── */
  .app-header__mobile-nav {
    position: relative;
    display: none;

    summary {
      list-style: none;
      cursor: pointer;
      inline-size: 40px;
      block-size: 40px;
      border-radius: var(--radius-full);
      background: rgba(255, 255, 255, 0.1);
      color: inherit;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      transition: background var(--transition-hover);

      &::-webkit-details-marker { display: none; }
      &::marker { content: ""; }

      &:hover {
        background: rgba(255, 255, 255, 0.22);
      }
    }
  }

  .app-header__mobile-nav__icon svg {
    inline-size: 22px;
    block-size: 22px;
  }

  .app-header__mobile-nav__panel {
    position: absolute;
    inset-block-start: calc(100% + 4px);
    inset-inline-end: 0;
    min-inline-size: 220px;
    background: var(--color-surface);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-modal);
    z-index: var(--z-dropdown);
    overflow: hidden;
    padding-block: var(--space-1);
  }

  .app-header__mobile-nav__item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    inline-size: 100%;
    padding-block: var(--space-3);
    padding-inline: var(--space-4);
    background: var(--color-surface);
    border: 0;
    color: var(--color-text);
    text-decoration: none;
    font: inherit;
    letter-spacing: inherit;
    text-align: start;
    cursor: pointer;
    transition: background var(--transition-hover);

    &:hover {
      background: var(--color-surface-alt);
    }

    &.app-header__mobile-nav__item--active {
      color: var(--color-primary-500);
      font-weight: 600;
    }
  }

  .app-header__mobile-nav__item-icon {
    inline-size: 20px;
    block-size: 20px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    flex-shrink: 0;

    svg {
      inline-size: 100%;
      block-size: 100%;
    }
  }

  /* ── Mobile collapse (< BP_MD) ───────────────────────────────────── */
  @media (max-width: 720px) {
    .app-header__bar {
      /* Only two columns on mobile (nav is hidden). Without dropping
         the third auto column, autoplacement puts .app-header__end into
         column 2 and column 3 — empty but with its grid gap rendered —
         leaves a phantom margin between the user menu and the right
         edge. */
      grid-template-columns: auto 1fr;
    }

    .app-header__end {
      justify-self: end;
    }

    .app-header__nav {
      display: none;
    }

    .app-header__mobile-nav {
      display: inline-block;
    }
  }
}