.app-shell { height: 100vh; min-height: 0; display: grid; grid-template-columns: auto 1fr; overflow: hidden; }
.icon-rail { width: 58px; background: var(--rail-bg); color: var(--rail-text); display: flex; flex-direction: column; align-items: center; height: 100vh; min-height: 0; box-shadow: var(--shadow-rail); z-index: 1000; transition: width .16s ease; }
.icon-rail.expanded { width: 208px; align-items: stretch; }
.icon-rail-header { width: 100%; min-height: 63px; display: flex; align-items: center; justify-content: center; padding: 0 10px; box-sizing: border-box; }
.brand-mark { width: 34px; height: 34px; flex: 0 0 auto; border-radius: 50%; background: conic-gradient(var(--accent) 0 20%, var(--amber) 0 40%, var(--green) 0 60%, var(--blue) 0 80%, var(--muted) 0); color: transparent; font-size: 0; position: relative; }
.brand-mark::after { position: absolute;
  top: 9px;
  left: 9px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  content: "";
  background-color: var(--rail-bg);
}
.icon-rail-toggle { border: 0; background: transparent; font: inherit; cursor: pointer; padding: 0; }
.icon-rail-toggle:hover,
.icon-rail-toggle:focus-visible { background: var(--rail-bg-active); color: var(--on-accent); outline: none; }
.icon-rail-toggle:focus-visible { box-shadow: inset 0 0 0 2px var(--accent); }
.icon-nav { width: 100%; display: flex; flex-direction: column; min-width: 0; }
.icon-nav-item { width: 100%; height: 52px; display: grid; grid-template-columns: 55px minmax(0, 1fr); align-items: center; color: var(--rail-text-muted); border-left: 3px solid transparent; text-decoration: none; box-sizing: border-box; }
.icon-nav-item svg,
.icon-nav-item > :first-child:not(.icon-nav-label) { justify-self: center; }
.icon-nav-fallback { justify-self: center; font-weight: 800; text-transform: uppercase; }
.icon-nav-label { display: none; min-width: 0; overflow: hidden; padding-right: 14px; font-size: 13px; font-weight: 700; text-overflow: ellipsis; white-space: nowrap; }
.icon-rail.expanded .icon-nav-label { display: block; }
.icon-nav-item:hover, .icon-nav-item.active { background: var(--rail-bg-active); color: var(--on-accent); border-left-color: var(--accent); }
.icon-rail.compact { width: 58px; }
.app-main { min-width: 0; min-height: 0; height: 100vh; display: grid; grid-template-rows: 64px 51px minmax(0, 1fr); }
.titlebar { position: relative; background: var(--titlebar-bg); border-bottom: var(--border-line); display: flex; align-items: center; padding: 0 18px; gap: 36px; z-index: 100;  box-shadow: var(--shadow-chrome); }
.tenant-selector { height: 40px; min-width: 210px; border: var(--border-line); border-radius: var(--radius-sm); background: var(--surface); display: flex; align-items: center; padding: 0 12px; gap: 5px; box-shadow: var(--shadow-xs); }
.tenant-label, .tenant-caret, .muted { color: var(--muted); }
.block { display: block; }
.danger-text { color: var(--danger-text); }
.small-text { font-size: .78rem; }
.small-note { font-size: 12px; }
.titlebar-spacer { flex: 1; }
.titlebar-link, .titlebar-icon-link, .account-pill { border: 0; background: transparent; display: inline-flex; align-items: center; gap: 7px; color: var(--muted); font: inherit; }
.titlebar-icon-link { width: 34px; height: 34px; justify-content: center; border-radius: 4px; cursor: pointer; }
.titlebar-icon-link:hover, .titlebar-link:hover { background: var(--titlebar-hover-bg); color: var(--text-strong); }
.titlebar-notification-button { position: relative; }
.titlebar-notification-badge { position: absolute; top: 4px; right: 3px; min-width: 16px; height: 16px; box-sizing: border-box; display: inline-flex; align-items: center; justify-content: center; padding: 0 4px; border: 2px solid var(--titlebar-bg); border-radius: 999px; background: var(--red); color: var(--on-accent); font-size: 10px; font-weight: 800; line-height: 1; transform: translate(35%, -35%); }
.account-pill { color: var(--text); }
.maintenance-topbar-link,
.backend-offline-topbar-alert { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); border-radius: 6px; min-height: 32px; padding: 0 14px; display: inline-flex; align-items: center; justify-content: center; font: inherit; font-weight: 800; box-shadow: 0 1px 2px var(--hover-tint); z-index: 1; white-space: nowrap; }
.maintenance-topbar-link { border: 1px solid var(--warning-border-soft); background: var(--warning-bg); color: var(--warning-text); cursor: pointer; }
.maintenance-topbar-link:hover { background: var(--warning-bg-hover); color: var(--warning-text-hover); }
.backend-offline-topbar-alert { border: 1px solid var(--danger-border-deep); background: var(--red); color: var(--on-accent); }
.language-menu-button { min-width: 54px; justify-content: center; font-weight: 800; }
.language-menu-code, .language-option-code { font-size: 12px; letter-spacing: .06em; text-transform: uppercase; }
.language-menu { min-width: 210px; }
.language-menu .dropdown-item { justify-content: flex-start; }
.language-menu .dropdown-item svg { margin-left: auto; }
.language-option-code { width: 34px; color: var(--muted); }
.api-mini { display: flex; gap: 6px; }
.api-mini input { width: 155px; height: 30px; border: var(--border-line); border-radius: var(--radius-sm); padding: 0 8px; }
.breadcrumb-bar { background: var(--bar); border-bottom: var(--border-line-dark); display: flex; align-items: center; padding: 0 22px; box-shadow: var(--shadow-chrome); z-index: 90; }
.breadcrumbs { display: flex; gap: 6px; text-transform: uppercase; font-weight: 700; font-size: 13px; color: var(--text-breadcrumb); }
.crumb { display: inline-flex; align-items: center; gap: 4px; }
.breadcrumb-actions { margin-left: auto; display: flex; gap: 10px; }
.ghost-button { border: 0; background: transparent; color: var(--muted); font-weight: 700; }
.app-content { min-height: 0; overflow: hidden; }
.workspace { height: 100%; min-height: 0; display: grid; grid-template-columns: 198px minmax(0, 1fr); }
.section-sidebar { background: var(--sidebar-bg); border-right: var(--border-line-dark); padding: 18px 0; border-left: 3px solid var(--sidebar-border); box-shadow: var(--shadow-chrome); z-index: 80; overflow-y: scroll; }
.section-title { font-size: 12px; font-weight: 800; color: var(--muted); padding: 0 22px 14px; letter-spacing: .06em; }
.section-title-lower { margin-top: 28px; }
.section-link { width: calc(100% + 3px); height: 48px; border: 0; padding: 0 10px 0 22px; background: transparent; text-align: left; color: var(--text-subtle); font: inherit; cursor: pointer; margin-left: -3px; }
.section-link:hover, .section-link.active { background: var(--sidebar-hover-bg); color: var(--text-hover-strong); }
.section-link.active { border-left: 3px solid var(--accent); font-weight: 700; }
.section-link.subtle { font-size: 13px; }
.workspace-content { min-width: 0; max-width: 100%; min-height: 0; overflow: auto; }
.ui-no-sticky-section-sidebars .app-content { overflow: auto; }
.ui-no-sticky-section-sidebars .workspace { height: auto; min-height: 100%; }
.ui-no-sticky-section-sidebars .section-sidebar {
  height: max-content;
  max-height: none;
  overflow: visible;
}
.ui-no-sticky-section-sidebars .workspace-content { overflow: visible; }
.content-pad { min-width: 0; max-width: 100%; box-sizing: border-box; padding: 28px 34px; }
.page-heading { margin-bottom: 22px; }
.page-heading h1 { margin: 0; font-size: 26px; color: var(--text-strong); font-weight: 600; }
.page-heading p { margin: 6px 0 0; color: var(--muted); }
.page-heading.split { display: flex; align-items: center; justify-content: space-between; }
.module-entry-page { max-width: none; }
.workspace-data-page .card { margin-bottom: 18px; }
.page-heading.workspace-heading {
  position: sticky;
  top: 0;
  z-index: 75;
  background: var(--bg);
  border-bottom: var(--border-line);
  box-shadow: var(--shadow-header);
  margin: -28px -34px 22px;
  padding: 18px 34px 16px;
}
.workspace-heading .mono-small { margin-top: 8px; }
.panel, .card { background: var(--panel); border: var(--border-line); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.card-header { min-height: 56px; padding: 0 24px; border-bottom: var(--border-line); display: flex; align-items: center; background: var(--panel-header); border-top-left-radius: var(--radius); border-top-right-radius: var(--radius); }
.card-header h2 { margin: 0; font-size: 16px; color: var(--text-strong); }
.card-actions { margin-left: auto; display: flex; gap: 10px; flex-wrap: wrap;}
.card-body { padding: 22px 24px; }
.metric-grid { display: grid; grid-template-columns: repeat(4, minmax(140px, 1fr)); gap: 12px; margin-bottom: 18px; }
.metric-grid.inside { margin: 14px 0; }
.metric-card { background: var(--panel); border: var(--border-line); border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow); border-top: 4px solid var(--line-dark); }
.metric-good { border-top-color: var(--green); } .metric-warning { border-top-color: var(--amber); } .metric-danger { border-top-color: var(--red); } .metric-info { border-top-color: var(--blue); }
.metric-label { color: var(--muted); font-size: 12px; text-transform: uppercase; font-weight: 800; letter-spacing: .05em; }
.metric-value { margin-top: 7px; font-size: 30px; color: var(--text-strong); font-weight: 700; }
.metric-detail { margin-top: 4px; color: var(--muted); font-size: 13px; }
.dashboard-grid, .settings-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; align-items: start; }
.wizard-page { min-height: calc(100vh - 112px); display: grid; place-items: start center; padding: 42px; }
.wizard-card { width: min(980px, 100%); background: var(--panel); border: var(--border-line); box-shadow: var(--shadow); border-radius: var(--radius); display: grid; grid-template-columns: 290px 1fr; overflow: hidden; }
.wizard-body { background: var(--panel-soft); padding: 28px; min-height: 620px; }
.wizard-heading { display: flex; justify-content: space-between; margin-bottom: 18px; }
.wizard-heading h1 { margin: 0; }
.save-state { color: var(--green); font-size: 13px; font-weight: 700; }
.wizard-footer { display: flex; justify-content: flex-end; gap: 10px; margin-top: 18px; }
.stepper { list-style: none; padding: 22px 0; margin: 0; background: var(--panel-soft); border-right: var(--border-line); }
.step button { width: 100%; min-height: 72px; border: 0; background: transparent; display: flex; gap: 14px; text-align: left; padding: 12px 20px; color: var(--muted); cursor: pointer; }
.step.active button { background: var(--surface); color: var(--text-strong); }
.step-number { width: 32px; height: 32px; border-radius: 50%; background: var(--step-number-bg); color: var(--on-accent); display: grid; place-items: center; font-weight: 800; flex: 0 0 auto; }
.step.active .step-number { background: var(--accent); }
.step small { display: block; margin-top: 3px; color: var(--muted); }
.step-intro h2 { margin: 0; color: var(--text-strong); }
.step-intro p { margin-top: 6px; color: var(--muted); }
.button-row { display: flex; gap: 10px; margin: 16px 0; flex-wrap: wrap; }
.alert { padding: 14px 16px; border-radius: var(--radius-sm); margin-bottom: 16px; }
.alert.warning { background: var(--warning-bg); } .alert.danger { background: var(--danger-bg); }
.table-like { border: var(--border-line); }
.table-row-link { display: grid; grid-template-columns: 1fr auto; text-decoration: none; color: var(--text); padding: 14px 16px; border-bottom: var(--border-line); }
.table-row-link:hover { background: var(--panel-soft); }
.mono-small { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12px; color: var(--muted); }
.code-panel { background: var(--code-bg); color: var(--code-text); padding: 18px; border-radius: 4px; overflow: auto; }
@media (max-width: 900px) {
  .api-mini { display: none; }
  .workspace { grid-template-columns: 1fr; }
  .section-sidebar { display: none; }
  .wizard-card { grid-template-columns: 1fr; }
  .metric-grid, .dashboard-grid, .settings-grid { grid-template-columns: 1fr; }
}


/* Layout additions: login and help dropdown */
.tenant-selector.disabled { opacity: .86; cursor: default; }
.context-menu-wrap { position: relative; }
.dropdown-menu { position: absolute; right: 0; top: calc(100% + 10px); min-width: 230px; background: var(--surface); border: var(--border-line); border-radius: 6px; box-shadow: var(--shadow-menu); padding: 8px; z-index: 5000; }
.dropdown-menu hr { border: 0; border-top: var(--border-line); margin: 8px 0; }
.dropdown-item { width: 100%; min-height: 34px; border: 0; background: transparent; display: flex; align-items: center; gap: 8px; padding: 7px 9px; border-radius: 4px; text-align: left; color: var(--text); font: inherit; text-decoration: none; cursor: pointer; }
.dropdown-item:hover { background: var(--panel-soft); color: var(--text-strong); }
.dropdown-item small { margin-left: auto; color: var(--muted); }
.account-menu { min-width: 260px; }
.account-menu-header { padding: 8px 9px 10px; border-bottom: var(--border-line); margin-bottom: 8px; }
.account-menu-header strong { display: block; color: var(--text-strong); }
.account-menu-header span { color: var(--muted); font-size: 13px; }
.login-hint { background: var(--panel-soft); border: var(--border-line); padding: 10px 12px; border-radius: 4px; color: var(--muted); font-size: 13px; }
.help-panel-section { margin-bottom: 16px; }
.help-panel-section h3 { margin: 0 0 7px; color: var(--text-strong); }
.about-logo { width: 52px; height: 52px; border-radius: 50%; background: conic-gradient(var(--accent) 0 20%, var(--amber) 0 40%, var(--green) 0 60%, var(--blue) 0 80%, var(--muted) 0); margin-bottom: 12px; }
.kbd { display: inline-flex; min-width: 22px; height: 22px; align-items: center; justify-content: center; border: var(--border-line-dark); border-bottom-width: 2px; border-radius: 4px; padding: 0 6px; background: var(--surface); font-size: 12px; font-weight: 700; color: var(--text-soft); }
.titlebar .tenant-selector strong { max-width: 210px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* Campaign workspace polish */
.crumb-link { color: inherit; text-decoration: none; border-radius: 4px; padding: 4px 5px; margin: -4px -5px; }
.crumb-link:hover { background: var(--sidebar-hover-bg); color: var(--text-strong); }
.compact-actions { margin: 0; align-items: center; }
.below-grid { margin-top: 18px; }
.detail-list { display: grid; gap: 12px; margin: 0; }
.detail-list div { display: grid; grid-template-columns: 145px minmax(0, 1fr); align-items: center; gap: 18px; padding-bottom: 12px; border-bottom: var(--border-line); }
.detail-list div:last-child { border-bottom: 0; padding-bottom: 0; }
.detail-list dt { color: var(--muted); font-size: 12px; text-transform: uppercase; font-weight: 800; letter-spacing: .04em; }
.detail-list dd { margin: 0; min-width: 0; }
.next-action-card { border-left: 4px solid var(--blue); padding-left: 16px; }
.next-action-card h2 { margin: 0; color: var(--text-strong); font-size: 19px; }
.next-action-card p { margin: 8px 0 0; color: var(--muted); }
.next-action-good { border-left-color: var(--green); }
.next-action-warning { border-left-color: var(--amber); }
.next-action-info { border-left-color: var(--blue); }
.summary-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 14px; }
.summary-tile { background: var(--panel-soft); border: var(--border-line); border-radius: 6px; padding: 14px; }
.summary-tile span { display: block; color: var(--muted); font-size: 12px; text-transform: uppercase; font-weight: 800; letter-spacing: .04em; }
.summary-tile strong { display: block; margin-top: 6px; color: var(--text-strong); font-size: 24px; }
.empty-state { min-height: 220px; display: grid; place-items: center; text-align: center; padding: 32px; }
.empty-state h2 { margin: 0; color: var(--text-strong); }
.empty-state p { max-width: 520px; margin: 8px auto 18px; color: var(--muted); }
.docs-workspace { grid-template-columns: 292px minmax(0, 1fr); background: var(--panel); }
.docs-workspace-content { background: var(--panel); }
.docs-outline { padding-top: 22px; }
.docs-sidebar-header { padding: 0 16px 16px; }
.docs-sidebar-header .section-title { padding: 0 6px 12px; }
.docs-audience-toggle { width: 100%; }
.docs-tree { display: grid; gap: 2px; padding: 0 10px 24px; }
.docs-tree-node { min-width: 0; }
.docs-tree-row { display: grid; grid-template-columns: 22px minmax(0, 1fr); align-items: start; gap: 3px; }
.docs-tree-toggle, .docs-tree-toggle-placeholder { width: 22px; height: 32px; display: inline-grid; place-items: center; flex: 0 0 auto; }
.docs-tree-toggle { border: 0; border-radius: 4px; background: transparent; color: var(--text-subtle); cursor: pointer; }
.docs-tree-toggle:hover { background: var(--sidebar-hover-bg); color: var(--text-strong); }
.docs-tree-toggle-placeholder { opacity: 0; }
.docs-tree-children { display: grid; gap: 2px; }
.docs-tree-page { width: 100%; min-height: 32px; border: 0; border-radius: 4px; background: transparent; color: var(--text-subtle); font: inherit; font-size: 13px; line-height: 1.25; text-align: left; cursor: pointer; padding: 7px 9px; overflow-wrap: anywhere; }
.docs-tree-page:hover, .docs-tree-page.is-active { background: var(--sidebar-hover-bg-strong); color: var(--text-strong); }
.docs-tree-page.is-active { box-shadow: inset 3px 0 var(--accent); font-weight: 700; }
.docs-tree-empty { color: var(--muted); font-size: 12px; line-height: 1.35; padding: 8px 9px; }
.docs-page { min-height: 100%; background: var(--panel); }
.docs-content { width: min(1180px, 100%); margin: 0 auto; display: grid; grid-template-columns: minmax(0, 1fr) 260px; align-items: start; gap: 32px; }
.docs-page-main { min-width: 0; }
.docs-page-outline-box { position: sticky; top: 24px; border: var(--border-line); border-radius: 6px; background: var(--surface-raised); padding: 16px; box-shadow: var(--shadow-xs); }
.docs-page-outline-box h2 { margin: 0 0 10px; color: var(--text-strong); font-size: 13px; font-weight: 800; text-transform: uppercase; letter-spacing: .04em; }
.docs-page-outline-box nav { display: grid; gap: 4px; }
.docs-page-outline-box a { border-radius: 4px; color: var(--muted); font-size: 13px; line-height: 1.3; padding: 5px 6px; text-decoration: none; }
.docs-page-outline-box a:hover { background: var(--panel); color: var(--text-strong); }
.docs-section { scroll-margin-top: 24px; padding-bottom: 34px; border-bottom: var(--border-line); }
.docs-section:last-child { border-bottom: 0; }
.docs-section h2 { margin: 0 0 18px; color: var(--text-strong); font-size: 24px; font-weight: 650; }
.docs-reference-block { scroll-margin-top: 24px; margin-top: 24px; }
.docs-reference-block:first-child { margin-top: 0; }
.docs-reference-block h3, .docs-topic h3 { margin: 0 0 8px; color: var(--text-strong); }
.docs-topic-list { display: grid; gap: 28px; }
.docs-topic { scroll-margin-top: 24px; }
.docs-topic-page h2 { margin: 0 0 12px; color: var(--text-strong); font-size: 28px; font-weight: 650; line-height: 1.18; }
.docs-topic-meta { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 8px; }
.docs-topic-summary { margin: 0 0 10px; color: var(--text); font-weight: 600; }
.docs-topic-body { margin: 0; color: var(--text); line-height: 1.7; white-space: pre-line; }
.docs-topic-links { margin: 12px 0 0; }
.docs-topic-details { display: grid; gap: 16px; margin-top: 18px; }
.docs-detail-block { scroll-margin-top: 24px; }
.docs-detail-block h4 { margin: 0 0 7px; color: var(--text-strong); font-size: 15px; }
.docs-detail-block p, .docs-detail-block ul, .docs-detail-block ol { margin: 0; line-height: 1.65; }
.docs-detail-block ul, .docs-detail-block ol { padding-left: 22px; }
.docs-unavailable-reason { margin-top: 16px; border-left: 3px solid var(--amber); padding-left: 12px; }
@media (max-width: 900px) {
  .page-heading.split { align-items: flex-start; flex-direction: column; }
  .summary-grid, .detail-list div { grid-template-columns: 1fr; }
  .docs-workspace { grid-template-columns: 1fr; }
  .docs-outline { display: none; }
  .docs-content { grid-template-columns: 1fr; }
  .docs-page-outline-box { display: none; }
}

/* Side rail: settings lives as the bottom utility entry. */
.icon-rail-bottom {
  width: 100%;
  margin-top: auto;
  padding: 12px 0 20px;
}
.icon-rail-bottom .icon-nav-item {
  width: 100%;
}
.icon-rail-bottom .icon-rail-toggle {
  border-top: 1px solid var(--rail-bg-active);
}