/* Unified left bar (left-bar.js). Shared by index.html, wikis.html and urs-sentinel.html.
   Collapse (body.nav-collapsed), tooltips (#nav-tooltip) and persistence: nav-collapse.js. */
:root {
  --lb-w-expanded: 236px;
  --lb-w-collapsed: 56px;
  --lb-w: var(--lb-w-expanded);
  --lb-top: 60px;
  --lb-accent: #1e5a7a;
  --lb-accent-light: #e8f2f8;
  --lb-text: #0f172a;
  --lb-text-2: #475569;
  --lb-text-3: #94a3b8;
  --lb-border: #e2e8f0;
}
body.nav-collapsed { --lb-w: var(--lb-w-collapsed); }
/* The tool drawer (styles.css) starts right of the bar. */
body.has-left-bar { --tool-rail-w: var(--lb-w); }

.app-left-bar {
  position: fixed;
  top: var(--lb-top);
  left: 0;
  bottom: 0;
  width: var(--lb-w);
  z-index: 135; /* above tool drawer (120) and AI panel (130), below header (140) */
  display: flex;
  flex-direction: column;
  background: #f8fafc;
  border-right: 1px solid var(--lb-border);
  box-shadow: 2px 0 12px rgba(15, 23, 42, 0.04);
  font-family: "DM Sans", "Inter", system-ui, sans-serif;
  color: var(--lb-text);
  transition: width 0.15s ease;
  box-sizing: border-box;
}
.app-left-bar.hidden { display: none !important; }
.app-left-bar *, .app-left-bar *::before, .app-left-bar *::after { box-sizing: border-box; }
.app-left-bar .hidden { display: none !important; }

.lb-top {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 0.6rem 0.6rem 0.5rem;
  border-bottom: 1px solid var(--lb-border);
}
.app-left-bar .nav-toggle {
  align-self: flex-end;
  display: inline-flex; align-items: center; justify-content: center;
  width: 2rem; height: 2rem; padding: 0;
  border: 1px solid var(--lb-border); border-radius: 8px; background: #fff;
  color: var(--lb-text-2); cursor: pointer;
}
.app-left-bar .nav-toggle:hover { color: var(--lb-accent); }
.app-left-bar .nav-toggle-chevron { transition: transform 0.15s ease; transform-origin: 15px 12px; }
body.nav-collapsed .app-left-bar .nav-toggle-chevron { transform: rotate(180deg); }

.lb-scroll {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  padding: 0.35rem 0.6rem 0.75rem;
}
.lb-section { display: flex; flex-direction: column; gap: 0.1rem; padding: 0.45rem 0; }
.lb-section + .lb-section { border-top: 1px solid var(--lb-border); }
.lb-section-bottom { margin-top: auto; }
.lb-section-title {
  margin: 0 0 0.2rem;
  padding: 0 0.45rem;
  font-size: 0.62rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--lb-text-3);
}
.lb-items { display: flex; flex-direction: column; gap: 0.1rem; }

.lb-item {
  display: flex; align-items: center; gap: 0.55rem;
  width: 100%; min-height: 2.05rem;
  padding: 0.35rem 0.5rem;
  border: 1px solid transparent; border-radius: 8px;
  background: transparent; color: var(--lb-text-2);
  font: inherit; font-size: 0.8rem; font-weight: 550; text-align: left; text-decoration: none;
  cursor: pointer;
}
.lb-item:hover { background: #fff; border-color: var(--lb-border); color: var(--lb-text); }
.lb-item.active, .lb-item[aria-current="page"] { background: var(--lb-accent-light); color: var(--lb-accent); font-weight: 650; }
.lb-item:focus-visible, .lb-search input:focus-visible, #lb-project-switcher:focus-visible {
  outline: 2px solid var(--lb-accent); outline-offset: 2px;
}
.lb-item .nav-icon { display: inline-flex; flex-shrink: 0; }
.lb-item .nav-icon svg { width: 1rem; height: 1rem; }
.lb-item .nav-label { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lb-sub { padding-left: 1.4rem; font-size: 0.76rem; }
.lb-soon { color: var(--lb-text-3); }
.lb-soon-chip {
  margin-left: auto; flex-shrink: 0;
  font-size: 0.58rem; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase;
  padding: 0.1rem 0.35rem; border-radius: 999px; background: #f1f5f9; color: var(--lb-text-3);
}

.lb-project-head { display: flex; flex-direction: column; gap: 0.3rem; padding: 0 0.45rem 0.35rem; }
.lb-project-head strong { font-size: 0.82rem; line-height: 1.25; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
#lb-project-switcher {
  width: 100%; padding: 0.3rem 0.4rem; font: inherit; font-size: 0.72rem;
  border: 1px solid var(--lb-border); border-radius: 8px; background: #fff;
}
.lb-sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.lb-user { margin: 0.3rem 0.45rem 0; font-size: 0.7rem; color: var(--lb-text-3); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* Global search */
.lb-search { position: relative; display: flex; align-items: center; }
.lb-search-icon { display: none; }
.lb-search input {
  width: 100%; padding: 0.42rem 0.55rem 0.42rem 0.55rem;
  border: 1px solid var(--lb-border); border-radius: 8px; background: #fff;
  font: inherit; font-size: 0.78rem; color: var(--lb-text);
}
.lb-search-results {
  position: absolute; top: calc(100% + 0.3rem); left: 0; z-index: 5;
  width: max(100%, 300px); max-height: 60vh; overflow-y: auto;
  background: #fff; border: 1px solid var(--lb-border); border-radius: 10px;
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.16); padding: 0.25rem;
}
.lb-result {
  display: flex; flex-direction: column; align-items: flex-start; gap: 0.05rem; width: 100%;
  padding: 0.4rem 0.55rem; border: none; border-radius: 8px; background: transparent;
  font: inherit; font-size: 0.78rem; color: var(--lb-text); text-align: left; cursor: pointer;
}
.lb-result small { font-size: 0.66rem; color: var(--lb-text-3); }
.lb-result.is-active, .lb-result:hover { background: var(--lb-accent-light); }
.lb-result-empty { margin: 0; padding: 0.5rem; font-size: 0.75rem; color: var(--lb-text-3); }

/* Collapsed: icons only, section titles become separators. */
body.nav-collapsed .app-left-bar .nav-label,
body.nav-collapsed .app-left-bar .lb-project-head,
body.nav-collapsed .app-left-bar .lb-user { display: none !important; }
body.nav-collapsed .lb-top, body.nav-collapsed .lb-scroll { padding-left: 0.35rem; padding-right: 0.35rem; align-items: center; }
body.nav-collapsed .app-left-bar .nav-toggle { align-self: center; }
body.nav-collapsed .lb-item { width: 2.5rem; justify-content: center; padding: 0.35rem; }
body.nav-collapsed .lb-sub { padding-left: 0.35rem; }
body.nav-collapsed .lb-search { justify-content: center; }
body.nav-collapsed .lb-search-icon { display: flex; }
body.nav-collapsed .lb-search-results { left: calc(100% + 0.5rem); top: 0; }
body.nav-collapsed .lb-section, body.nav-collapsed .lb-items { align-items: center; width: 100%; }

/* App page: content sits right of the bar (the header keeps full width). */
body.has-left-bar .app > .view:not(#view-landing) {
  margin-left: var(--lb-w);
  margin-right: 0;
  width: auto;
  max-width: none;
  transition: margin-left 0.15s ease;
}
body.has-left-bar.ai-panel-open .app > .view:not(#view-landing) { margin-right: var(--ai-panel-w, 340px); }
@media (max-width: 900px) {
  body.has-left-bar.ai-panel-open .app > .view:not(#view-landing) { margin-right: 0; }
}
body.has-left-bar #view-workspace .workspace-main { min-width: 0; }

/* Placeholder + settings pages */
.lb-page { max-width: 880px; padding: 2rem 2.25rem 3rem; }
.lb-page h2 { margin: 0.2rem 0 0.6rem; }
.lb-page-body { max-width: 640px; color: var(--lb-text-2); line-height: 1.6; margin-top: 0.75rem; }
.lb-soon-badge {
  display: inline-block; font-size: 0.66rem; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase;
  padding: 0.2rem 0.55rem; border-radius: 999px; background: #fef3c7; color: #92400e; border: 1px solid #f5dfc0;
}
.settings-block { padding: 1.1rem 0; border-top: 1px solid var(--lb-border); }
.settings-block h3 { margin: 0 0 0.35rem; font-size: 1rem; }
.settings-dept-list { display: flex; flex-direction: column; gap: 0.35rem; max-width: 420px; margin-top: 0.6rem; }
.settings-dept-row { display: flex; align-items: center; justify-content: space-between; gap: 0.5rem; padding: 0.35rem 0.6rem; border: 1px solid var(--lb-border); border-radius: 8px; background: #fff; }

/* Project settings panel (phase-card moved from the old sidebar) */
.project-settings-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1rem; }
.project-settings-card { background: #fff; border: 1px solid var(--lb-border); border-radius: 12px; padding: 1rem; display: flex; flex-direction: column; gap: 0.5rem; }
.project-settings-card h3 { margin: 0; font-size: 0.9rem; }
.project-settings-card .phase-card { display: flex; flex-direction: column; gap: 0.35rem; }
.project-settings-danger { border-color: #fecaca; }
.project-settings-danger .project-menu h3 { display: none; }

/* All Tools: phase-locked tools are greyed (opacity in styles.css) with a tooltip. */
.tool-list-item.locked { cursor: help; filter: grayscale(0.6); }
.tool-list-item.locked:focus-visible { outline: 2px solid var(--lb-accent); outline-offset: 2px; }

/* External pages (Wikis, URS Sentinel): shift page content, keep their header full width. */
body.lb-external.has-left-bar { padding-left: var(--lb-w); transition: padding-left 0.15s ease; }
body.lb-external.has-left-bar .wikis-topbar,
body.lb-external.has-left-bar .urs-topbar { margin-left: calc(-1 * var(--lb-w)); padding-left: calc(var(--lb-w) * 0 + 1.25rem); }
/* nav-collapse.js tooltip on pages without styles.css */
.nav-tooltip {
  position: fixed; z-index: 200; transform: translateY(-50%);
  padding: 0.3rem 0.55rem; border-radius: 6px; background: #0f172a; color: #fff;
  font: 550 0.72rem "DM Sans", system-ui, sans-serif; white-space: nowrap; pointer-events: none;
}
.nav-tooltip.hidden { display: none; }

@media (max-width: 900px) {
  :root { --lb-w-expanded: 200px; }
}