/* ============================================================================
   Left rail and breadcrumb.

   The rail is the primary navigation for a multi-keyword install, so its rules
   are written around staying short: groups collapse, long groups fold their
   tail behind "show N more", and a filter box narrows the tree in place. The
   collapse controls are `hidden` in the markup and revealed by nav.js, so a
   no-JS reader never gets a group it cannot reopen.
   ========================================================================== */

.sidenav {
  position: sticky; top: 18px; max-height: calc(100vh - 36px);
  display: flex; flex-direction: column; gap: 14px;
  padding: 16px 12px; margin-top: clamp(18px, 3vw, 30px);
  background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--radius);
  overflow-y: auto; overscroll-behavior: contain;
}
.nav { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.nav-k {
  margin: 12px 0 4px; padding: 0 8px;
  font: 500 9.5px/1.4 var(--mono); letter-spacing: .16em; text-transform: uppercase; color: var(--faint);
}
.nav-k:first-child { margin-top: 0; }
.nav-groups { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.nav-group { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.nav-group.collapsed > .nav-children { display: none; }
.nav-children { display: flex; flex-direction: column; gap: 2px; padding-left: 10px; margin-left: 9px; border-left: 1px solid var(--line-2); }
.nav-item { display: flex; align-items: center; gap: 2px; min-width: 0; }
.nav-item .nav-row { flex: 1 1 auto; min-width: 0; }
.nav-head { display: flex; align-items: center; gap: 2px; min-width: 0; }
.nav-head .nav-row { flex: 1 1 auto; min-width: 0; }

.nav-row {
  display: flex; align-items: center; gap: 8px; min-width: 0;
  padding: 7px 9px; border-radius: 8px;
  color: var(--dim); text-decoration: none; font-size: 13px;
  border: 1px solid transparent; transition: all .13s;
}
.nav-row:hover { color: var(--ink); background: var(--bg-3); }
.nav-row.current {
  color: var(--ink); background: rgba(61,220,151,.1);
  border-color: rgba(61,220,151,.34); font-weight: 600;
}
.nav-label { flex: 1 1 auto; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.nav-meta { flex: 0 0 auto; font-size: 10.5px; color: var(--faint); font-variant-numeric: tabular-nums; }
.nav-row.current .nav-meta { color: var(--accent); }
.nav-project { font-weight: 600; color: #c3c8d2; }
.nav-key { font-size: 12.5px; }
.nav-all { color: #c3c8d2; }

.nav-toggle {
  flex: 0 0 auto; width: 16px; height: 22px; padding: 0;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--faint); background: none; border: 0; cursor: pointer;
  font-size: 9px; line-height: 1; transition: transform .15s, color .15s;
}
.nav-toggle:hover { color: var(--ink); }
.nav-group.collapsed > .nav-head > .nav-toggle { transform: rotate(-90deg); }

.nav-drop {
  flex: 0 0 auto; padding: 0 5px; align-self: stretch;
  display: inline-flex; align-items: center;
  color: var(--faint); background: none; border: 0; cursor: pointer; font-size: 15px; line-height: 1;
  border-radius: 6px;
}
.nav-drop:hover { color: var(--neg); background: rgba(240,112,95,.1); }

.nav-empty { margin: 2px 0 0; padding: 0 9px 4px; color: var(--faint); font-size: 11.5px; }
.nav-more {
  align-self: flex-start; margin: 2px 0 0 4px; padding: 3px 8px;
  color: var(--faint); background: none; border: 1px dashed var(--line-2);
  border-radius: 7px; font: 500 10.5px/1.4 var(--mono); cursor: pointer;
}
.nav-more:hover { color: var(--ink); border-color: var(--faint); }

/* Filter box. Hidden in the markup; nav.js reveals it once it can filter. */
.nav-search { padding: 4px 4px 2px; }
.nav-search input {
  width: 100%; min-width: 0; padding: 7px 9px;
  color: var(--ink); background: #0c0e12;
  border: 1px solid var(--line-2); border-radius: 8px;
  font: 500 12.5px/1.2 var(--ui);
}
.nav-search input::placeholder { color: var(--faint); }
.nav-search input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(61,220,151,.14); }
.nav-noresults { margin: 6px 4px 0; color: var(--faint); font-size: 11.5px; }
/* A project whose every keyword was filtered away still shows its own row, so
   the reader can tell "no match" from "no such project". */
.nav-group.filtered-out > .nav-head { opacity: .4; }

.sidenav-actions { display: flex; flex-direction: column; gap: 8px; padding-top: 12px; border-top: 1px solid var(--line); }
.sidenav-actions .project-inline-form { flex-wrap: wrap; }
.sidenav-actions .project-inline-form input,
.sidenav-actions .project-inline-form select { flex: 1 1 110px; min-width: 0; max-width: none; }
.sidenav-actions .role-note { align-self: flex-start; }

/* ---- breadcrumb --------------------------------------------------------- */
.crumbs { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; min-width: 0; }
.crumb { color: var(--faint); text-decoration: none; font: 500 11.5px/1 var(--mono); letter-spacing: .04em; }
.crumb:hover { color: var(--ink); }
.crumb.current { color: var(--accent); font-weight: 600; overflow-wrap: anywhere; }
.crumb-sep { color: var(--line-2); font-size: 11px; }
.crumb-tag {
  padding: 3px 7px; border-radius: 6px; border: 1px solid var(--line-2);
  color: var(--faint); font: 500 9.5px/1 var(--mono); letter-spacing: .1em; text-transform: uppercase;
}
.crumb-spacer { flex: 1 1 auto; }
.crumbs .project-delete { margin-left: 0; }
.project-delete {
  flex: 0 0 auto; padding: 0; color: var(--faint); background: none; border: 0; cursor: pointer;
  font: 11px/1 var(--mono); text-transform: uppercase; letter-spacing: .06em;
}
.project-delete:hover { color: var(--neg); }