/* The workspace shell's skin (shell.html), built on design/tokens.css and design/base.css: layout sizes per breakpoint, the sidebar, the top bar and the workspace content. */
:root {
  --ab-workspace-left: var(--ab-sidebar-width);
  --ab-workspace-right: 0px;
}
button:disabled { cursor: default; opacity: .5; }
.ab-icon { display: inline-block; width: 20px; height: 20px; flex: 0 0 auto; background: currentColor; mask: var(--ab-icon) center / contain no-repeat; -webkit-mask: var(--ab-icon) center / contain no-repeat; }
.ab-icon-building-community { --ab-icon: url('../assets/icons/building-community.svg'); }
.ab-icon-message-circle { --ab-icon: url('../assets/icons/message-circle.svg'); }
.ab-icon-layout-dashboard { --ab-icon: url('../assets/icons/layout-dashboard.svg'); }
.ab-icon-box { --ab-icon: url('../assets/icons/box.svg'); }
.ab-icon-chevron-down { --ab-icon: url('../assets/icons/chevron-down.svg'); }
.ab-icon-chevron-up { --ab-icon: url('../assets/icons/chevron-up.svg'); }
.ab-icon-menu-2 { --ab-icon: url('../assets/icons/menu-2.svg'); }
.ab-icon-x { --ab-icon: url('../assets/icons/x.svg'); }
.ab-icon-logout { --ab-icon: url('../assets/icons/logout.svg'); }
.ab-icon-arrow-left { --ab-icon: url('../assets/icons/arrow-left.svg'); }
.ab-icon-arrow-up-right { --ab-icon: url('../assets/icons/arrow-up-right.svg'); }
.ab-icon-send { --ab-icon: url('../assets/icons/send.svg'); }
.ab-icon-sparkles { --ab-icon: url('../assets/icons/sparkles.svg'); }
.ab-icon-user { --ab-icon: url('../assets/icons/user.svg'); }
.ab-icon-refresh { --ab-icon: url('../assets/icons/refresh.svg'); }
.ab-icon-adjustments-horizontal { --ab-icon: url('../assets/icons/adjustments-horizontal.svg'); }
.ab-icon-layout-sidebar-right { --ab-icon: url('../assets/icons/layout-sidebar-right.svg'); }
.ab-icon-trash { --ab-icon: url('../assets/icons/trash.svg'); }
.ab-icon-list-details { --ab-icon: url('../assets/icons/list-details.svg'); }
.ab-icon-login { --ab-icon: url('../assets/icons/login.svg'); }
.ab-icon-minus { --ab-icon: url('../assets/icons/minus.svg'); }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 10002; background: var(--ab-surface); padding: 12px 16px; border: 1px solid var(--ab-border); border-radius: var(--ab-r-sm); box-shadow: var(--ab-shadow-md); }
.skip-link:focus { top: 12px; }

/* ── Frame ───────────────────────────────────────────────────────────────── */
#app-shell { grid-template-columns: var(--ab-sidebar-width) minmax(0, 1fr) var(--ab-context-width); grid-template-areas: 'sidebar topbar topbar' 'sidebar slot context'; background: var(--ab-bg); }
#app-shell.context-collapsed { grid-template-columns: var(--ab-sidebar-width) minmax(0, 1fr) 0; }
#app-shell:not(.context-collapsed) { --ab-workspace-right: var(--ab-context-width); }
body:has(#app-shell:not(.context-collapsed)) { --ab-workspace-right: var(--ab-context-width); }

/* ── Sidebar: light, with one accented active item ───────────────────────── */
#sidebar { background: var(--ab-nav-bg); border-right: 1px solid var(--ab-nav-divider); padding: 0; }
.sidebar-brand { display: flex; gap: var(--ab-space-2); align-items: center; min-height: var(--ab-topbar-height); padding: 0 var(--ab-space-4); border-bottom: 1px solid var(--ab-nav-divider); color: var(--ab-text-primary); font-size: 15px; overflow: hidden; font-weight: var(--ab-fw-semibold); letter-spacing: var(--ab-tracking-tight); }
.sidebar-brand-mark { width: 28px; height: 28px; flex: 0 0 auto; border-radius: var(--ab-r-md); }
.sidebar-header { padding: var(--ab-space-3); border: 0; border-bottom: 1px solid var(--ab-nav-divider); }

/* The project switcher button: the project's tile, its name and hub, and a chevron. */
.project-tile { display: inline-grid; place-items: center; flex: 0 0 auto; width: 32px; height: 32px; border-radius: var(--ab-r-md); background: var(--ab-accent-soft); color: var(--ab-accent);
  font: var(--ab-fw-semibold) var(--ab-fs-xs)/1 var(--ab-font); letter-spacing: .02em; box-shadow: inset 0 0 0 1px var(--ab-accent-border); }
.project-tile--sm { width: 26px; height: 26px; border-radius: var(--ab-r-sm); font-size: var(--ab-fs-2xs); }
.sidebar-project-trigger { display: flex; align-items: center; gap: var(--ab-space-3); width: 100%; min-height: 52px; margin: 0; padding: var(--ab-space-2); text-align: left;
  background: transparent; color: var(--ab-text-primary); border: 1px solid transparent; border-radius: var(--ab-r-md); box-shadow: none; cursor: pointer;
  transition: background var(--ab-dur-fast) var(--ab-ease), border-color var(--ab-dur-fast) var(--ab-ease); }
.sidebar-project-trigger:hover:not(:disabled), .sidebar-project-trigger[aria-expanded='true'] { background: var(--ab-surface); border-color: var(--ab-border); box-shadow: var(--ab-shadow-xs); }
.sidebar-project-copy { display: flex; flex-direction: column; gap: 2px; flex: 1; min-width: 0; }
.sidebar-project-name { font: var(--ab-fw-semibold) var(--ab-fs-sm)/1.3 var(--ab-font); letter-spacing: 0; color: var(--ab-text-primary); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sidebar-project-meta { display: block; margin: 0; font-size: var(--ab-fs-2xs); line-height: 1.3; color: var(--ab-text-muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sidebar-project-trigger > .ab-icon { width: 16px; height: 16px; color: var(--ab-text-muted); transition: transform var(--ab-dur-fast) var(--ab-ease); }
.sidebar-project-trigger[aria-expanded='true'] > .ab-icon { transform: rotate(180deg); }

/* The switcher popover (js/shared/projectPicker.js). */
.project-picker { z-index: 200; display: flex; flex-direction: column; overflow: hidden; background: var(--ab-surface); border: 1px solid var(--ab-border); border-radius: var(--ab-r-lg);
  box-shadow: var(--ab-shadow-lg); font-family: var(--ab-font); animation: ab-pop-in var(--ab-dur) var(--ab-ease); }
@keyframes ab-pop-in { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: none; } }
.project-picker-head { display: flex; align-items: baseline; justify-content: space-between; gap: var(--ab-space-2); padding: var(--ab-space-3) var(--ab-space-4) var(--ab-space-2); }
.project-picker-title { font-size: var(--ab-fs-sm); font-weight: var(--ab-fw-semibold); color: var(--ab-text-primary); }
.project-picker-count { font-size: var(--ab-fs-2xs); color: var(--ab-text-muted); }
.project-picker-field { position: relative; display: block; margin: 0 var(--ab-space-3) var(--ab-space-2); }
.project-picker-glass { position: absolute; left: 11px; top: 50%; width: 11px; height: 11px; margin-top: -7px; border: 1.6px solid var(--ab-text-muted); border-radius: 50%; pointer-events: none; }
.project-picker-glass::after { content: ''; position: absolute; right: -5px; bottom: -4px; width: 5px; height: 1.6px; background: var(--ab-text-muted); transform: rotate(45deg); }
.project-picker-search { box-sizing: border-box; width: 100%; height: var(--ab-control-h); margin: 0; padding: 0 var(--ab-space-3) 0 32px; font-size: var(--ab-fs-sm); color: var(--ab-text-primary);
  background: var(--ab-surface-raised); border: 1px solid var(--ab-border); border-radius: var(--ab-r-sm); }
.project-picker-search::placeholder { color: var(--ab-text-muted); }
.project-picker-search:focus { outline: none; background: var(--ab-surface); border-color: var(--ab-focus-color); box-shadow: var(--ab-focus-ring); }
.project-picker-list { flex: 1; min-height: 0; overflow-y: auto; padding: 0 var(--ab-space-2) var(--ab-space-2); border-top: 1px solid var(--ab-divider); }
.project-picker-group + .project-picker-group { margin-top: var(--ab-space-1); }
.project-picker-hub { position: sticky; top: 0; z-index: 1; padding: var(--ab-space-3) var(--ab-space-2) var(--ab-space-1); background: var(--ab-surface); font-size: var(--ab-fs-2xs); font-weight: var(--ab-fw-semibold);
  text-transform: uppercase; letter-spacing: var(--ab-tracking-caps); color: var(--ab-text-muted); }
.project-picker-row { display: flex; align-items: center; gap: var(--ab-space-3); width: 100%; min-height: 40px; padding: var(--ab-space-1) var(--ab-space-2); text-align: left;
  font: var(--ab-fw-regular) var(--ab-fs-sm)/1.3 var(--ab-font); color: var(--ab-text-primary); background: transparent; border: 0; border-radius: var(--ab-r-sm); cursor: pointer; }
.project-picker-row:hover { background: var(--ab-surface-hover); box-shadow: inset 0 0 0 1px var(--ab-border); }
.project-picker-row:focus-visible { outline: none; background: var(--ab-surface-hover); box-shadow: inset 0 0 0 2px var(--ab-focus-color); }
.project-picker-name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.project-picker-check { flex: 0 0 auto; width: 16px; height: 16px; }
.project-picker-row[aria-current='true'] { background: var(--ab-accent-soft); color: var(--ab-accent-hover); font-weight: var(--ab-fw-medium); }
.project-picker-row[aria-current='true'] .project-tile { background: var(--ab-accent); color: var(--ab-on-accent); box-shadow: none; }
.project-picker-row[aria-current='true'] .project-picker-check::after { content: ''; display: block; width: 5px; height: 10px; margin: 1px 0 0 5px; border: solid var(--ab-accent); border-width: 0 2px 2px 0; transform: rotate(45deg); }
.project-picker-state { display: flex; align-items: center; justify-content: center; gap: var(--ab-space-2); padding: var(--ab-space-6) var(--ab-space-4); font-size: var(--ab-fs-sm); color: var(--ab-text-muted); text-align: center; }
.project-picker-state--error { color: var(--ab-danger-text); }

.sidebar-nav { padding: var(--ab-space-2) var(--ab-space-3); display: flex; flex-direction: column; gap: 2px; }
.sidebar-item { min-height: 40px; padding: 0 var(--ab-space-3); gap: var(--ab-space-3); font-size: var(--ab-fs-sm); font-weight: var(--ab-fw-medium); color: var(--ab-nav-text); background: transparent; border: 0; border-radius: var(--ab-r-sm); position: relative; }
.sidebar-item .ab-icon { width: 18px; height: 18px; color: var(--ab-nav-text-muted); }
.sidebar-item.active { color: var(--ab-nav-active); background: var(--ab-nav-active-bg); }
.sidebar-item.active .ab-icon { color: var(--ab-nav-indicator); }
.sidebar-item.active::before { content: ''; position: absolute; left: calc(-1 * var(--ab-space-3)); top: 8px; bottom: 8px; width: 3px; border-radius: 0 3px 3px 0; background: var(--ab-nav-indicator); }
.sidebar-item:hover:not(:disabled):not(.active) { background: var(--ab-nav-hover-bg); color: var(--ab-text-primary); }
.sidebar-footer { position: relative; display: block; margin: var(--ab-space-3); padding: var(--ab-space-3) 0 0; border-top: 1px solid var(--ab-nav-divider); }
.account-trigger { display: flex; align-items: center; gap: var(--ab-space-3); width: 100%; border: 0; padding: var(--ab-space-2); border-radius: var(--ab-r-sm); background: transparent; color: var(--ab-text-primary); text-align: left; cursor: pointer; }
.account-trigger:hover:not(:disabled) { background: var(--ab-nav-hover-bg); }
.sidebar-avatar { display: grid; place-items: center; width: 32px; height: 32px; border-radius: 50%; background: var(--ab-accent-soft); color: var(--ab-accent); font: var(--ab-fw-semibold) var(--ab-fs-xs) var(--ab-font); flex: 0 0 auto; }
.account-copy { display: flex; flex-direction: column; gap: 2px; flex: 1; min-width: 0; }
.sidebar-username { color: var(--ab-text-primary); font-size: var(--ab-fs-sm); font-weight: var(--ab-fw-medium); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.account-meta { color: var(--ab-text-muted); font-size: var(--ab-fs-2xs); }
.account-trigger > .ab-icon { width: 16px; height: 16px; color: var(--ab-text-muted); }
.account-panel { position: absolute; left: 0; right: 0; bottom: calc(100% + var(--ab-space-2)); padding: var(--ab-space-2); background: var(--ab-surface); border: 1px solid var(--ab-border); border-radius: var(--ab-r-md); box-shadow: var(--ab-shadow-lg); z-index: 5; }
.account-email { color: var(--ab-text-secondary); font-size: var(--ab-fs-xs); padding: var(--ab-space-1) var(--ab-space-2) var(--ab-space-2); overflow-wrap: anywhere; }
.account-email:empty { display: none; }
.account-action { display: flex; gap: var(--ab-space-3); align-items: center; width: 100%; color: var(--ab-text-primary); border: 0; background: transparent; padding: var(--ab-space-2); border-radius: var(--ab-r-sm); cursor: pointer; text-align: left; font-size: var(--ab-fs-sm); }
.account-action .ab-icon { width: 18px; height: 18px; color: var(--ab-text-secondary); }
.account-action:hover { background: var(--ab-surface-hover); }
.account-sign-in { text-decoration: none; justify-content: center; background: var(--ab-accent); color: var(--ab-on-accent); font-weight: var(--ab-fw-medium); }
.account-sign-in .ab-icon { color: var(--ab-on-accent); }
.account-sign-in:hover { background: var(--ab-accent-hover); color: var(--ab-on-accent); }

/* ── Top bar ─────────────────────────────────────────────────────────────── */
#topbar { background: var(--ab-surface); border-bottom: 1px solid var(--ab-border); }
.topbar-main { min-width: 0; padding: 0 var(--ab-space-6); gap: var(--ab-space-3); }
.topbar-breadcrumb { display: flex; align-items: center; gap: var(--ab-space-2); font-size: var(--ab-fs-sm); color: var(--ab-text-secondary); min-width: 0; flex-shrink: 1; }
#topbar-project-label { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 38vw; }
#topbar-module-name { font-weight: var(--ab-fw-semibold); color: var(--ab-text-primary); font-size: var(--ab-fs-sm); }
#topbar-issue-name { color: var(--ab-text-secondary); }
.topbar-breadcrumb-sep { color: var(--ab-neutral-300); }
.topbar-scope-area { margin-left: auto; gap: var(--ab-space-2); flex-shrink: 0; }
.icon-button { display: inline-flex; align-items: center; justify-content: center; width: var(--ab-control-h); height: var(--ab-control-h); border: 1px solid transparent; border-radius: var(--ab-r-sm); background: transparent; color: var(--ab-text-secondary); cursor: pointer; }
.icon-button:hover { background: var(--ab-surface-sunken); color: var(--ab-text-primary); }
.navigation-toggle { display: none; }
.topbar-clear-btn { display: inline-flex; align-items: center; gap: var(--ab-space-1); min-height: var(--ab-control-h-sm); font-size: var(--ab-fs-xs); padding: 0 var(--ab-space-3); border: 1px solid var(--ab-border-strong); border-radius: var(--ab-r-sm); color: var(--ab-text-secondary); background: var(--ab-surface); cursor: pointer; }
.topbar-clear-btn:hover { color: var(--ab-text-primary); border-color: var(--ab-neutral-400); }
.topbar-clear-btn .ab-icon { width: 14px; height: 14px; }

/* ── Workspace, the embedded Viewer, the context panel ───────────────────── */
#slot { min-width: 0; min-height: 0; padding: 0; background: var(--ab-surface); overflow: hidden; }
#slot:focus { outline: 0; }
/* The embedded model Viewer page (js/modules/viewer.js) fills the workspace cell; it sits over the empty #slot while the Viewer module is open. */
#viewer-host { grid-area: slot; position: relative; z-index: 1; min-width: 0; min-height: 0; overflow: hidden; background: var(--ab-bg); }
#viewer-host[hidden] { display: none; }
#viewer-host iframe { display: block; width: 100%; height: 100%; border: 0; }
#context-panel { background: var(--ab-surface-raised); border-left: 1px solid var(--ab-border); padding: var(--ab-space-2) 0; }
.context-section { padding: var(--ab-space-4) var(--ab-space-5); }
.context-section + .context-section { border-top: 1px solid var(--ab-divider); }
.context-section-label { font-size: var(--ab-fs-2xs); font-weight: var(--ab-fw-semibold); color: var(--ab-text-muted); text-transform: uppercase; letter-spacing: var(--ab-tracking-caps); margin-bottom: var(--ab-space-2); }
.context-issue-title { font-size: var(--ab-fs-base); font-weight: var(--ab-fw-medium); }

/* Signed out, checking, failed: one calm screen with one action. */
.workspace-access-state { display: flex; flex-direction: column; align-items: flex-start; justify-content: center; gap: var(--ab-space-4); min-height: 100%; max-width: 640px; padding: var(--ab-space-12); margin: 0 auto; }
.workspace-access-state h1 { margin: 0; font: var(--ab-fw-semibold) clamp(26px, 2.6vw, 34px)/1.2 var(--ab-font-display); letter-spacing: -.02em; color: var(--ab-text-primary); }
.workspace-access-state > p:not(.workspace-eyebrow) { margin: 0; max-width: 48ch; color: var(--ab-text-secondary); font-size: var(--ab-fs-md); line-height: var(--ab-lh-body); }
.workspace-access-state .access-mark { width: 44px; height: 44px; color: var(--ab-accent); }
.workspace-eyebrow { margin: 0; font-size: var(--ab-fs-2xs); font-weight: var(--ab-fw-semibold); color: var(--ab-accent); letter-spacing: var(--ab-tracking-caps); }
.workspace-primary-button { display: inline-flex; align-items: center; justify-content: center; gap: var(--ab-space-2); min-height: var(--ab-control-h-lg); padding: 0 var(--ab-space-5); border: 1px solid var(--ab-accent); border-radius: var(--ab-r-sm); color: var(--ab-on-accent); background: var(--ab-accent); text-decoration: none; font-weight: var(--ab-fw-medium); cursor: pointer; }
.workspace-primary-button:hover { background: var(--ab-accent-hover); color: var(--ab-on-accent); }
.workspace-text-button { display: inline-flex; align-items: center; gap: var(--ab-space-2); background: transparent; border: 0; color: var(--ab-text-link); cursor: pointer; font-weight: var(--ab-fw-medium); padding: var(--ab-space-2) 0; min-height: var(--ab-control-h); }
.workspace-text-button:hover { color: var(--ab-accent-hover); }
.ab-workspace-slot { padding: var(--ab-space-8) var(--ab-space-10) 144px; background: var(--ab-surface); scrollbar-gutter: stable; }
.ab-workspace-artifact { max-width: 1280px; margin: 0 auto; }
.ab-workspace-artifact .output-envelope { background: transparent; border: 0; box-shadow: none; border-radius: 0; padding: 0; max-width: none; }
.ab-workspace-artifact .output-envelope-header { padding: 0 0 var(--ab-space-6); border: 0; margin: 0; }
.ab-workspace-artifact .tool-result-name { font: var(--ab-fw-semibold) var(--ab-fs-xl)/1.25 var(--ab-font-display); letter-spacing: -.02em; color: var(--ab-text-primary); }
.workspace-result-navigation { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--ab-space-3); margin-bottom: var(--ab-space-8); }
.workspace-result-scope { color: var(--ab-text-secondary); font-size: var(--ab-fs-sm); }
.workspace-result-actions { display: flex; align-items: center; flex-wrap: wrap; gap: var(--ab-space-5); }
.workspace-result-actions .workspace-text-button .ab-icon { width: 18px; height: 18px; }
.ab-workspace-artifact .output-issue-detail { border: 0; }
.ab-workspace-artifact .output-issue-detail > .output-envelope-header { display: none; }
.ab-workspace-artifact .output-detail-hero { align-items: center; justify-content: flex-start; flex-wrap: wrap; gap: var(--ab-space-5); margin-bottom: var(--ab-space-6); }
.ab-workspace-artifact .output-detail-hero-title { font-size: clamp(24px, 2.4vw, 32px); line-height: 1.25; letter-spacing: -.02em; max-width: 40ch; overflow-wrap: anywhere; }
.ab-workspace-artifact .output-detail-meta-strip { gap: var(--ab-space-5) 0; margin: 0 0 var(--ab-space-8); padding: var(--ab-space-4) 0; border-top: 1px solid var(--ab-border); border-bottom: 1px solid var(--ab-border); }
.ab-workspace-artifact .output-detail-meta-chip { flex-direction: column; align-items: flex-start; gap: var(--ab-space-1); padding: 0 var(--ab-space-6); border: 0; border-right: 1px solid var(--ab-border); background: transparent; border-radius: 0; }
.ab-workspace-artifact .output-detail-meta-chip:first-child { padding-left: 0; }
.ab-workspace-artifact .output-detail-meta-chip:last-child { border-right: 0; }
.ab-workspace-artifact .output-detail-meta-chip-label { font-size: var(--ab-fs-2xs); color: var(--ab-text-muted); font-weight: var(--ab-fw-semibold); text-transform: uppercase; letter-spacing: var(--ab-tracking-caps); }
.ab-workspace-artifact .output-detail-meta-chip-value { font-size: var(--ab-fs-base); font-weight: var(--ab-fw-medium); }
.ab-workspace-artifact .output-detail-section-label { font: var(--ab-fw-semibold) var(--ab-fs-md)/1.3 var(--ab-font); color: var(--ab-text-primary); text-transform: none; letter-spacing: var(--ab-tracking-tight); margin-bottom: var(--ab-space-3); }
.ab-workspace-artifact .output-detail-description { font-size: var(--ab-fs-base); line-height: 1.7; max-width: 72ch; padding: 0; background: transparent; border: 0; }
.ab-workspace-artifact .output-detail-description-section { margin-bottom: var(--ab-space-8); padding-bottom: var(--ab-space-8); border-bottom: 1px solid var(--ab-border); }
.ab-workspace-artifact .output-comment { max-width: none; padding: var(--ab-space-5) 0; background: transparent; border: 0; border-bottom: 1px solid var(--ab-border); border-radius: 0; margin: 0; }
.ab-workspace-artifact .output-comment:last-child { border-bottom: 0; }
.ab-workspace-artifact .output-comment-avatar { width: 32px; height: 32px; font-size: var(--ab-fs-xs); font-weight: var(--ab-fw-semibold); }
.ab-workspace-artifact .output-comment-meta { gap: var(--ab-space-3); margin-bottom: var(--ab-space-2); }
.ab-workspace-artifact .output-comment-meta-text { font-size: var(--ab-fs-sm); color: var(--ab-text-secondary); font-weight: var(--ab-fw-medium); }
.ab-workspace-artifact .output-comment-body { margin-left: 44px; font-size: var(--ab-fs-base); line-height: 1.65; max-width: 70ch; }
.output-status-badge { font-size: var(--ab-fs-xs); font-weight: var(--ab-fw-medium); text-transform: none; padding: 2px var(--ab-space-2); border-radius: var(--ab-r-pill); }
.output-status-badge-lg { font-size: var(--ab-fs-sm); padding: var(--ab-space-1) var(--ab-space-3); }
.ab-workspace-artifact .ab-data-table-toolbar { background: transparent; border: 0; border-radius: 0; margin: 0 0 var(--ab-space-4); padding: 0; gap: var(--ab-space-4); }
.ab-data-table-group-select, .ab-data-table-page-size { min-height: var(--ab-control-h); font-size: var(--ab-fs-sm); border: 1px solid var(--ab-border-strong); border-radius: var(--ab-r-sm); padding: 0 var(--ab-space-3); background: var(--ab-surface); }
.ab-workspace-artifact .ab-data-table-el th { font-size: var(--ab-fs-2xs); font-weight: var(--ab-fw-semibold); text-transform: uppercase; letter-spacing: var(--ab-tracking-caps); color: var(--ab-text-muted); background: var(--ab-surface-raised); padding: var(--ab-space-3); }
.ab-workspace-artifact .ab-data-table-el td { font-size: var(--ab-fs-sm); line-height: 1.5; padding: var(--ab-space-3); }
.ab-data-table-row-clickable:hover { background: var(--ab-surface-selected); }
.ab-data-table-wrapper { overflow-x: auto; }
.ab-data-table-page-btn { min-width: 32px; min-height: 32px; }
.ab-data-table-page-btn .ab-icon { width: 16px; height: 16px; }
.ab-data-table-page-btn:last-child .ab-icon { transform: rotate(180deg); }
.ab-data-table-sort-arrow.ab-icon { width: 14px; height: 14px; vertical-align: middle; }
.ab-data-table-page-status { font-size: var(--ab-fs-xs); }
.output-issue-id { font-size: var(--ab-fs-xs); font-family: var(--ab-mono); }
.ab-workspace-empty { min-height: 65vh; flex-direction: column; align-items: flex-start; text-align: left; padding: var(--ab-space-10) 0; max-width: 620px; margin: 0 auto; gap: var(--ab-space-4); }
.ab-workspace-empty h1 { color: var(--ab-text-primary); font: var(--ab-fw-semibold) clamp(26px, 2.6vw, 34px)/1.2 var(--ab-font-display); letter-spacing: -.02em; }
.ab-workspace-empty p { font-size: var(--ab-fs-md); line-height: var(--ab-lh-body); color: var(--ab-text-secondary); max-width: 48ch; }
.workspace-examples { display: flex; flex-wrap: wrap; gap: var(--ab-space-2); margin-top: var(--ab-space-2); }
.workspace-example { color: var(--ab-text-primary); border: 1px solid var(--ab-border); background: var(--ab-surface); border-radius: var(--ab-r-pill); padding: var(--ab-space-2) var(--ab-space-4); font-size: var(--ab-fs-sm); cursor: pointer; box-shadow: var(--ab-shadow-xs); }
.workspace-example:hover { border-color: var(--ab-accent-border); background: var(--ab-accent-soft); color: var(--ab-accent-hover); }

/* An issue's place in the Viewer (js/toolResultRenderer.js). */
.ab-issue-open { display: flex; flex-direction: column; align-items: flex-start; gap: var(--ab-space-2); max-width: 560px; padding: var(--ab-space-5); background: var(--ab-surface); border: 1px solid var(--ab-border); border-radius: var(--ab-r-lg); box-shadow: var(--ab-shadow-xs); }
.ab-issue-open-title { margin: 0; font-size: var(--ab-fs-md); font-weight: var(--ab-fw-semibold); }
.ab-issue-open-view { margin: 0; font-size: var(--ab-fs-xs); font-weight: var(--ab-fw-medium); color: var(--ab-accent); background: var(--ab-accent-soft); border-radius: var(--ab-r-pill); padding: 2px var(--ab-space-2); }
.ab-issue-open-text { margin: 0 0 var(--ab-space-2); color: var(--ab-text-secondary); font-size: var(--ab-fs-sm); line-height: var(--ab-lh-body); }
.ab-issue-open-status { margin: 0; min-height: 1.4em; color: var(--ab-text-secondary); font-size: var(--ab-fs-xs); }
.ab-issue-open-note { margin: var(--ab-space-2) 0 0; color: var(--ab-warning-text); font-size: var(--ab-fs-xs); }

/* ── Dashboard (the issues dashboard) ────────────────────────────────────── */
#slot .ab-dashboard-workspace { padding: var(--ab-space-8) var(--ab-space-10) 144px; gap: var(--ab-space-6); scrollbar-gutter: stable; background: var(--ab-bg); }
.ab-dashboard-workspace > .grid-stack { flex-shrink: 0; min-width: 0; }
.ab-dashboard-header { display: flex; align-items: flex-start; justify-content: space-between; flex-wrap: wrap; gap: var(--ab-space-5); }
#slot .ab-dashboard-heading { font-size: var(--ab-fs-xl); font-weight: var(--ab-fw-semibold); line-height: 1.25; letter-spacing: -.02em; }
#slot .ab-dashboard-summary { font-size: var(--ab-fs-sm); line-height: 1.6; min-height: 22px; margin-top: var(--ab-space-1); color: var(--ab-text-secondary); }
.ab-dashboard-controls { display: flex; flex-wrap: wrap; align-items: center; gap: var(--ab-space-2); }
.ab-dashboard-controls button, .ab-dashboard-back-btn, .ab-dashboard-starter-btn { display: inline-flex; gap: var(--ab-space-2); align-items: center; min-height: var(--ab-control-h); padding: 0 var(--ab-space-4); border: 1px solid var(--ab-border-strong); background: var(--ab-surface); color: var(--ab-text-primary); border-radius: var(--ab-r-sm); cursor: pointer; font-size: var(--ab-fs-sm); font-weight: var(--ab-fw-medium); }
.ab-dashboard-controls button:hover, .ab-dashboard-back-btn:hover { border-color: var(--ab-neutral-400); background: var(--ab-surface-hover); }
.ab-dashboard-controls .ab-icon { width: 16px; height: 16px; color: var(--ab-text-secondary); }
.ab-dashboard-edit-btn[aria-pressed='true'] { color: var(--ab-accent); background: var(--ab-accent-soft); border-color: var(--ab-accent-border); }
#slot .ab-pc-tile { border: 1px solid var(--ab-border); border-left: 1px solid var(--ab-border) !important; border-radius: var(--ab-r-lg); box-shadow: var(--ab-shadow-xs); background: var(--ab-surface); }
#slot .ab-pc-hdr { padding: var(--ab-space-3) var(--ab-space-4); gap: var(--ab-space-2); min-width: 0; border-color: var(--ab-divider); }
#slot .ab-pc-hdr .ab-pc-title { font-size: var(--ab-fs-sm); font-family: var(--ab-font); font-weight: var(--ab-fw-semibold); }
#slot .ab-widget-body { display: flex; flex-direction: column; flex: 1 1 0%; min-width: 0; min-height: 0; padding: var(--ab-space-3) var(--ab-space-4); gap: var(--ab-space-1); overflow: hidden; }
.ab-widget-content { flex: 1 1 0%; min-width: 0; min-height: 0; overflow: hidden; }
.ab-widget-content--scroll { overflow: auto; }
.ab-widget-metric { display: flex; flex-direction: column; justify-content: center; height: 100%; min-height: 0; gap: var(--ab-space-1); }
.ab-chart-frame { position: relative; width: 100%; height: 100%; min-width: 0; min-height: 0; overflow: hidden; }
.ab-chart-frame > canvas { display: block; }
#slot .ab-pc-metric-num { font-size: 36px; font-weight: var(--ab-fw-semibold); letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
#slot .ab-pc-status, #slot .ab-pc-context { font-size: var(--ab-fs-xs); }
#slot .ab-pc-lineage { display: block; flex-shrink: 0; min-width: 0; margin-top: var(--ab-space-1); padding-top: 6px; font-family: var(--ab-font); font-size: var(--ab-fs-2xs); border-top-style: solid; line-height: 1.4; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; color: var(--ab-text-muted); }
#slot .ab-pc-open-btn { background: transparent; border: 0; padding: var(--ab-space-1) 0; min-height: 28px; font-weight: var(--ab-fw-medium); font-size: var(--ab-fs-sm); color: var(--ab-text-link); }
.ab-widget-delete-btn { display: inline-flex; align-items: center; justify-content: center; width: 32px; height: 32px; background: transparent; border: 0; color: var(--ab-text-muted); cursor: pointer; border-radius: var(--ab-r-sm); }
.ab-widget-delete-btn:hover { color: var(--ab-danger-text); background: var(--ab-danger-bg); }
.ab-widget-delete-btn .ab-icon { width: 16px; height: 16px; }
.ab-dashboard-drilldown-heading { font: var(--ab-fw-semibold) var(--ab-fs-lg) var(--ab-font-display); }

/* ── The chat overlay in the shell: placement only; its colors are the tokens ── */
body .ab-overlay-root { left: calc(var(--ab-workspace-left) + (100vw - var(--ab-workspace-left) - var(--ab-workspace-right)) / 2); width: min(600px, calc(100vw - var(--ab-workspace-left) - var(--ab-workspace-right) - 48px)); bottom: 28px; z-index: 50;
  --ab-fs-xs: 12px; --ab-fs-sm: 13px; --ab-fs-base: 14px; --ab-fs-cmd: 15px;
}
body .ab-overlay-root--expanded { width: min(600px, calc(100vw - var(--ab-workspace-left) - var(--ab-workspace-right) - 48px)); }
body .ab-panel { max-height: min(460px, calc(100dvh - 200px)); backdrop-filter: none; -webkit-backdrop-filter: none; border: 1px solid var(--ab-panel-border); box-shadow: var(--ab-shadow-lg); }
body .ab-msg-list { max-height: min(340px, calc(100dvh - 290px)); scrollbar-width: thin; }
body .ab-command { min-height: 60px; border-radius: var(--ab-r-pill); border: 1px solid var(--ab-command-border); padding: 8px 8px 8px 20px; box-shadow: var(--ab-shadow-md); gap: var(--ab-space-3); }
body .ab-command:focus-within { border-color: var(--ab-focus-color); box-shadow: var(--ab-focus-ring), var(--ab-shadow-md); }
body .ab-command-input { font-size: 15px; }
body .ab-command-send { width: 40px; height: 40px; border-radius: 50%; }
body .ab-command-send .ab-icon { width: 20px; height: 20px; }
body .ab-command-mark { color: var(--ab-accent); width: 22px; height: 22px; }
body .ab-logo { background: var(--ab-accent-soft); color: var(--ab-accent); }
body .ab-logo .ab-icon { width: 18px; height: 18px; }
body .ab-overlay-minimize { margin-left: 6px; }
body .ab-workspace-receipt { align-self: center; max-width: 100%; padding: var(--ab-space-2) var(--ab-space-4); border: 1px solid var(--ab-border); border-radius: var(--ab-r-pill); color: var(--ab-text-secondary); background: var(--ab-surface); box-shadow: var(--ab-shadow-xs); font-size: var(--ab-fs-xs); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; cursor: pointer; }
body .ab-workspace-receipt:hover { color: var(--ab-text-primary); border-color: var(--ab-border-strong); }

/* ── Compact navigation: an icon rail (automatic in the Viewer; the person can expand it) ── */
.sidebar-compact-toggle { width: 100%; margin-bottom: var(--ab-space-1); color: var(--ab-text-muted); }
.sidebar-compact-toggle .ab-icon { transition: transform var(--ab-dur) var(--ab-ease); }
@media (min-width: 901px) {
  #app-shell[data-nav='compact'] { --ab-sidebar-width: 64px; }
  body:has(#app-shell[data-nav='compact']) { --ab-workspace-left: 64px; }
  #app-shell[data-nav='compact'] .sidebar-brand { justify-content: center; padding: 0; }
  #app-shell[data-nav='compact'] .brand-lockup,
  #app-shell[data-nav='compact'] .sidebar-item-label,
  #app-shell[data-nav='compact'] .account-copy,
  #app-shell[data-nav='compact'] .account-trigger > .ab-icon { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
  #app-shell[data-nav='compact'] .sidebar-header { padding: var(--ab-space-2); }
  #app-shell[data-nav='compact'] .sidebar-project-trigger { justify-content: center; padding: var(--ab-space-1); min-height: 44px; }
  #app-shell[data-nav='compact'] .sidebar-project-copy,
  #app-shell[data-nav='compact'] .sidebar-project-trigger > .ab-icon { display: none; }
  #app-shell[data-nav='compact'] .sidebar-nav { padding: var(--ab-space-2); align-items: center; }
  #app-shell[data-nav='compact'] .sidebar-item { justify-content: center; width: 44px; padding: 0; }
  #app-shell[data-nav='compact'] .sidebar-item.active::before { left: -10px; }
  #app-shell[data-nav='compact'] .sidebar-footer { margin: var(--ab-space-2); display: flex; flex-direction: column; align-items: center; }
  #app-shell[data-nav='compact'] .sidebar-compact-toggle { width: 44px; }
  #app-shell[data-nav='compact'] .sidebar-compact-toggle .ab-icon { transform: rotate(180deg); }
  #app-shell[data-nav='compact'] .account-trigger { justify-content: center; width: 44px; padding: var(--ab-space-1); }
  #app-shell[data-nav='compact'] .account-sign-in { width: 44px; padding: var(--ab-space-2); justify-content: center; font-size: 0; }
  #app-shell[data-nav='compact'] .account-panel { left: 0; right: auto; width: 220px; }
}
@media (min-width: 901px) and (prefers-reduced-motion: no-preference) {
  #app-shell { transition: grid-template-columns var(--ab-dur) var(--ab-ease); }
}

/* ── The Viewer opens files from its own documents panel: no project to choose, none to clear, none in the path ── */
#app-shell[data-module='viewer'] .sidebar-header,
#app-shell[data-module='viewer'] #topbar-project-label,
#app-shell[data-module='viewer'] .topbar-breadcrumb-sep,
#app-shell[data-module='viewer'] #topbar-clear-btn { display: none !important; }

/* ── Breakpoints ─────────────────────────────────────────────────────────── */
@media (max-width: 1200px) {
  :root { --ab-sidebar-width: 216px; }
  .sidebar-brand { padding: 0 var(--ab-space-4); }
  .sidebar-header { padding: var(--ab-space-4) var(--ab-space-3) var(--ab-space-3); }
  .ab-workspace-slot { padding: var(--ab-space-6) var(--ab-space-8) 140px; }
  #slot .ab-dashboard-workspace { padding: var(--ab-space-6) var(--ab-space-6) 140px; }
  .ab-workspace-artifact .output-detail-meta-chip { padding: 0 var(--ab-space-5); }
}
@media (max-width: 900px) {
  :root { --ab-sidebar-width: 0px; --ab-context-width: 300px; }
  #sidebar { position: fixed; left: 0; top: var(--ab-topbar-height); bottom: 0; width: 248px; z-index: 80; visibility: hidden; transform: translateX(-100%); transition: transform var(--ab-dur) var(--ab-ease), visibility var(--ab-dur); }
  #app-shell.navigation-open #sidebar { visibility: visible; transform: none; box-shadow: var(--ab-shadow-lg); }
  .sidebar-brand { display: none; }
  .navigation-toggle { display: inline-flex; }
  .topbar-main { padding: 0 var(--ab-space-4); }
  #app-shell, #app-shell.context-collapsed { grid-template-columns: minmax(0, 1fr); grid-template-areas: 'topbar' 'slot'; }
  #context-panel { position: fixed; right: 0; top: var(--ab-topbar-height); bottom: 0; width: min(340px, 90vw); z-index: 70; box-shadow: var(--ab-shadow-lg); }
  body:has(#app-shell:not(.context-collapsed)) { --ab-workspace-right: 0px; }
  body:has(#app-shell:not(.context-collapsed)) .ab-overlay-root { visibility: hidden; }
}
@media (max-width: 600px) {
  .topbar-main { padding: 0 var(--ab-space-2); gap: var(--ab-space-2); }
  .topbar-breadcrumb { font-size: var(--ab-fs-xs); gap: 6px; }
  #topbar-module-name, #topbar-issue-name { font-size: var(--ab-fs-xs); }
  #topbar-issue-name { display: none; }
  .topbar-clear-label { display: none; }
  .topbar-scope-area { gap: 6px; }
  .topbar-clear-btn { padding: 0 6px; }
  .ab-workspace-slot { padding: var(--ab-space-6) var(--ab-space-5) 140px; }
  .workspace-access-state { padding: var(--ab-space-8) var(--ab-space-6); }
  .workspace-result-navigation { gap: var(--ab-space-2); margin-bottom: var(--ab-space-6); }
  .workspace-result-scope { font-size: var(--ab-fs-xs); }
  .ab-workspace-artifact .output-detail-hero-title { font-size: 26px; }
  .ab-workspace-artifact .output-detail-meta-chip { padding: 0 var(--ab-space-3); }
  .ab-workspace-artifact .output-detail-meta-strip { margin-bottom: var(--ab-space-6); }
  .ab-workspace-artifact .output-comment-body { margin-left: 0; }
  .ab-workspace-artifact .output-comment-meta-text { font-size: var(--ab-fs-xs); }
  body .ab-overlay-root, body .ab-overlay-root--expanded { width: calc(100vw - 32px); bottom: 16px; }
  body .ab-command { min-height: 56px; }
  #slot .ab-dashboard-workspace { padding: var(--ab-space-6) var(--ab-space-3) 130px; }
  #slot .ab-dashboard-heading { font-size: var(--ab-fs-lg); }
}
@media (prefers-reduced-motion: reduce) {
  #app-shell, #sidebar, .ab-workspace-artifact, body .ab-overlay-root, body .ab-panel { transition: none; scroll-behavior: auto; }
}