#sidebar {
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--c-bg-sidebar);
  border-right: 1px solid var(--c-border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  overflow: hidden;
  transition: width 200ms ease;
  position: relative;
  z-index: 200;
}
#sidebar.collapsed { width: var(--sidebar-collapsed); }
#sidebar.collapsed .nav-label,
#sidebar.collapsed .nav-section,
#sidebar.collapsed .sb-agent-info,
#sidebar.collapsed .sb-signout {
  opacity: 0; width: 0; overflow: hidden;
}
#sidebar.collapsed .nav-item { justify-content: center; padding: 8px 0; }

/* When collapsed: hide the wordmark, center the logo, and stack the toggle below it */
#sidebar.collapsed .sb-header {
  flex-direction: column;
  gap: 6px;
  padding: 12px 6px;
}
#sidebar.collapsed .sb-logo { gap: 0; }
#sidebar.collapsed .sb-footer {
  flex-direction: column;
  padding: 10px 4px;
  gap: 6px;
}

/* Toggle icon swap based on state */
.sb-toggle-icon-expand   { display: none; }
#sidebar.collapsed .sb-toggle-icon-collapse { display: none; }
#sidebar.collapsed .sb-toggle-icon-expand   { display: inline-flex; }

/* Tooltips: shown only when sidebar is collapsed, on hover/focus */
.nav-item { position: relative; }
.nav-item[data-tip]::after {
  content: attr(data-tip);
  position: absolute;
  left: calc(100% + 10px);
  top: 50%;
  transform: translateY(-50%);
  background: var(--c-text-primary);
  color: #fff;
  font-size: 12px;
  font-weight: 500;
  line-height: 1;
  padding: 6px 10px;
  border-radius: 6px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.12s ease;
  z-index: 250;
  box-shadow: 0 4px 10px rgba(0,0,0,0.18);
}
.nav-item[data-tip]::before {
  content: "";
  position: absolute;
  left: calc(100% + 4px);
  top: 50%;
  transform: translateY(-50%);
  border: 6px solid transparent;
  border-right-color: var(--c-text-primary);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.12s ease;
  z-index: 250;
}
#sidebar.collapsed .nav-item[data-tip]:hover::after,
#sidebar.collapsed .nav-item[data-tip]:focus-visible::after,
#sidebar.collapsed .nav-item[data-tip]:hover::before,
#sidebar.collapsed .nav-item[data-tip]:focus-visible::before {
  opacity: 1;
}

.sb-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 14px 14px 16px;
  border-bottom: 1px solid var(--c-border);
}
.sb-logo {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none; color: var(--c-text-primary);
  font-weight: 600; font-size: 16px;
}
.sb-logo:hover { text-decoration: none; }
.logo-mark {
  background: var(--c-navy); color: white;
  width: 32px; height: 32px;
  border-radius: 8px;
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 600; font-size: 12px;
  flex-shrink: 0;
}
.sb-toggle-btn {
  background: transparent; border: none;
  color: var(--c-text-secondary); cursor: pointer;
  padding: 4px; border-radius: 6px; font-size: 18px;
  display: inline-flex;
}
.sb-toggle-btn:hover { background: var(--c-bg-hover); color: var(--c-text-primary); }

.sb-nav {
  flex: 1; overflow-y: auto;
  padding: 12px 8px;
  display: flex; flex-direction: column; gap: 1px;
}
.nav-section {
  font-size: 10px; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.6px; color: var(--c-text-muted);
  padding: 14px 12px 4px;
}
.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 12px; border-radius: 8px;
  color: var(--c-text-primary); text-decoration: none;
  font-size: 13px; font-weight: 500;
  transition: background 0.1s;
  white-space: nowrap;
}
.nav-item i { font-size: 17px; flex-shrink: 0; color: var(--c-text-secondary); }
.nav-item:hover { background: var(--c-bg-hover); text-decoration: none; }
.nav-item.active {
  background: var(--c-navy-light); color: var(--c-navy);
}
.nav-item.active i { color: var(--c-navy); }

.sb-footer {
  border-top: 1px solid var(--c-border);
  padding: 10px 12px;
  display: flex; align-items: center; gap: 10px;
}
.agent-initials-circle {
  width: 32px; height: 32px; border-radius: 999px;
  background: var(--c-navy); color: white;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 600;
  flex-shrink: 0;
}
.sb-agent-info { display: flex; flex-direction: column; line-height: 1.2; flex: 1; min-width: 0; }
.sb-agent-name { font-size: 13px; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sb-agent-role { font-size: 11px; color: var(--c-text-muted); }
.sb-signout {
  color: var(--c-text-secondary);
  font-size: 18px; padding: 4px;
  display: inline-flex; border-radius: 6px;
}
.sb-signout:hover { background: var(--c-bg-hover); color: var(--c-text-primary); }