/* Module navigation has one visual contract. Legacy aliases allow gradual
   consumer migration without changing endpoints, HTMX targets or saved views. */
:is(.module-nav, .feeds-tabs, .pfam-tabs) {
  display: flex;
  flex: none;
  align-items: stretch;
  gap: 4px;
  min-width: 0;
  margin: 0 0 20px;
  padding: 0 var(--pad-x);
  overflow-x: auto;
  border-bottom: 1px solid var(--line);
  scrollbar-width: thin;
}
:is(.module-nav-link, .feeds-tab, .pfam-tab) {
  position: relative;
  display: inline-flex;
  flex: none;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 40px;
  padding: 0 14px;
  margin: 0;
  border: 0;
  border-bottom: 2px solid transparent;
  border-radius: 0;
  background: transparent;
  color: var(--ink-3);
  font: inherit;
  font-size: 13px;
  font-weight: 500;
  line-height: 20px;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: color 120ms, border-color 120ms;
}
:is(.module-nav-link, .feeds-tab, .pfam-tab):first-child { padding-left: 0; }
:is(.module-nav-link, .feeds-tab, .pfam-tab):hover { color: var(--ink); }
:is(.module-nav-link, .feeds-tab, .pfam-tab):is([data-active="true"], [aria-current="page"]) {
  color: var(--ink);
  border-bottom-color: var(--accent);
  font-weight: 600;
}
:is(.module-nav-link, .feeds-tab, .pfam-tab)[aria-disabled="true"] {
  color: var(--ink-4);
  cursor: default;
}
:is(.module-nav-link, .feeds-tab, .pfam-tab, .tab):focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: -3px;
}
.view-header-tabs :is(.module-nav, .feeds-tabs, .pfam-tabs) {
  margin: 0;
  border-bottom: 0;
}
/* Form pages share gutters without forcing their fields to full width. */
.page-content {
  min-width: 0;
  padding: 20px var(--pad-x);
}
.page-content--form {
  width: 100%;
  max-width: 920px;
  margin-inline: auto;
}
.analysis-shell .page-content { padding: 20px 16px; }
@media (max-width: 960px) {
  .analysis-shell .page-content { padding: 16px 12px; }
}
@media (prefers-reduced-motion: reduce) {
  :is(.module-nav-link, .feeds-tab, .pfam-tab, .tab) { transition: none; }
}

/* Action menus use the same surface and item rhythm; their anchoring,
   portals, nested submenus and form behavior stay with the owning component. */
:is(.row-menu-list, .tbl-foot-pop) {
  border: 1px solid var(--line);
  border-radius: var(--r-control);
  background: var(--bg-elev);
  box-shadow: var(--sh-2);
  padding: 4px;
  gap: 2px;
}
:is(.row-menu-item, .tbl-foot-pop-item) {
  min-height: 32px;
  padding: 7px 10px;
  border-radius: var(--r-xs);
  font-size: 13px;
  line-height: 18px;
  text-decoration: none;
}
:is(.row-menu-item, .tbl-foot-pop-item):focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: -2px;
  background: var(--bg-sunk);
}
.row-menu-item-danger,
.row-menu-item-danger .row-menu-item-icon { color: var(--bad); }
.row-menu-item-danger:hover { color: var(--bad); background: var(--bad-soft); }

/* Settings keep their vertical hierarchy on desktop. On mobile the same
   hierarchy becomes the same underlined, horizontally scrolling page nav. */
.settings-nav-mobile.module-nav { display: none; }
@media (max-width: 880px) {
  .settings-nav-mobile.module-nav { display: flex; }
  .analysis-shell .settings-rail {
    padding: 0;
    background: var(--bg-elev);
  }
  .analysis-shell .settings-nav-mobile.module-nav {
    margin: 0;
    padding: 0 12px;
    border-bottom: 0;
    gap: 4px;
  }
  .settings-chip.module-nav-link {
    font-size: 13px;
    text-transform: none;
    letter-spacing: normal;
    height: 40px;
    padding: 0 14px;
    border: 0;
    border-bottom: 2px solid transparent;
    border-radius: 0;
    background: transparent;
    color: var(--ink-3);
  }
  .settings-chip.module-nav-link[data-active="true"] {
    background: transparent;
    color: var(--ink);
    border-bottom-color: var(--accent);
    font-weight: 600;
  }
}

/* Nawigacja lokalna: wspólny rytm ustawień, poziomów kanału,
   ulubionych Wiedzy i rozmów. Aliasy zachowują kontrakty HTMX. */
:is(.settings-nav-item, .channels-level, .chat-rail .thread, .kb-favorites .kb-favorite-row) {
  min-height: 36px;
  padding: 8px 12px;
  border-radius: 9px;
  font-size: 13px;
  line-height: 20px;
  letter-spacing: -.005em;
  color: var(--ink-2);
}
:is(.settings-nav-item, .channels-level, .chat-rail .thread, .kb-favorites .kb-favorite-row):hover {
  background: var(--bg-sunk);
  color: var(--ink);
}
:is(.settings-nav-item, .channels-level, .chat-rail .thread, .kb-favorites .kb-favorite-row)[data-active="true"] {
  background: var(--bg-sunk);
  color: var(--ink);
  font-weight: 600;
  border-color: transparent;
}
:is(.settings-nav-item, .channels-level, .chat-rail .thread, .kb-favorite-main):focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: -2px;
}
.settings-nav .settings-nav-subitem { padding-left: 34px; }
.settings-nav-item .ni-i { flex: 0 0 16px; }
.channels-level { display: flex; align-items: center; gap: 10px; font-weight: 500; }
.channels-level[data-active="true"]::before { content: none; }
.channels-levels {
  gap: 2px;
  padding: 0 12px 12px 0;
  border: 0;
  border-right: 1px solid var(--line);
  border-radius: 0;
  background: transparent;
  min-width: 0;
  max-height: calc(100dvh - 160px);
  overflow-y: auto;
}
.channels-levels-h {
  margin: 18px 12px 4px;
  font-size: 11px;
  text-transform: none;
  letter-spacing: normal;
  color: var(--ink-4);
}
.channels-levels .channels-level-add { width: 100%; justify-content: flex-start; text-align: left; color: var(--ink-3); }
.kb-favorite-row:focus-within .kb-favorite-remove { opacity: 1; }
@media (min-width: 1101px) {
  .channels-layout--nav { grid-template-columns: 220px minmax(0, 1fr); }
}
/* Kanały wcześniej przechodzą w pasek ze względu na szerokie tabele.
   Wzorzec aktywnej zakładki pozostaje taki sam jak w ustawieniach. */
@media (max-width: 1100px) {
  .channels-levels {
    padding: 0;
    max-height: none;
    overflow-y: hidden;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    gap: 4px;
  }
  .channels-levels .channels-level {
    flex: none;
    min-height: 44px;
    padding: 0 14px;
    border-radius: 0;
    border-bottom: 2px solid transparent;
    color: var(--ink-3);
  }
  .channels-levels .channels-level[data-active="true"] {
    background: transparent;
    border-bottom-color: var(--accent);
  }
  .channels-levels .channels-level-add { width: auto; margin-left: 8px; }
}