.erp-shell { display: grid; grid-template-columns: var(--sidebar-width) minmax(0, 1fr); grid-template-rows: var(--header-height) minmax(0, 1fr) var(--status-height); height: 100dvh; min-width: 760px; overflow: hidden; }
.erp-shell.sidebar-is-collapsed { grid-template-columns: var(--sidebar-collapsed-width) minmax(0, 1fr); }
.application-header { grid-column: 1 / -1; display: grid; grid-template-columns: var(--sidebar-width) minmax(0, 1fr); color: var(--text-header); background: var(--surface-header); border-bottom: 1px solid var(--border-default); }
.sidebar-is-collapsed .application-header { grid-template-columns: var(--sidebar-collapsed-width) minmax(0, 1fr); }
.application-brand { display: flex; align-items: center; justify-content: center; border-right: 1px solid var(--border-subtle); color: inherit; text-decoration: none; overflow: hidden; }
.klubix-brand { display: inline-flex; align-items: center; gap: 6px; flex-shrink: 0; }
/* Proportional viewports of the supplied 1600×800 JPEG, no asset alteration. */
.brand-symbol, .brand-wordmark { display: block; position: relative; overflow: hidden; flex-shrink: 0; }
.brand-symbol { width: 36px; height: 40px; }
.brand-wordmark { width: 146px; height: 36px; }
.brand-symbol img, .brand-wordmark img { position: absolute; max-width: none; height: auto; }
.brand-symbol img { width: 136px; left: -50px; top: -4px; }
.brand-wordmark img { width: 250px; left: -52px; top: -83px; }
.sidebar-is-collapsed .brand-wordmark { display: none; }
.header-tools { display: flex; align-items: center; gap: var(--space-4); padding: 0 var(--space-4); min-width: 0; }
.header-tools > .erp-button { border-color: transparent; color: var(--text-primary); }
.header-search { display: flex; align-items: center; position: relative; flex: 1; max-width: 580px; min-width: 160px; margin-left: var(--space-4); }
.header-search input { height: var(--control-height-md); width: 100%; padding: 0 34px 0 var(--space-3); border: 1px solid var(--border-default); border-radius: var(--radius-md); background: var(--surface-subtle); color: var(--text-muted); font-size: var(--font-caption); }
.header-search input::placeholder { color: var(--text-muted); opacity: 1; }
.header-search .erp-icon { position: absolute; right: var(--space-2); color: var(--text-muted); }
.header-context { display: flex; align-items: center; gap: var(--space-3); margin-left: auto; min-width: 0; }
.environment-tag { font-size: 10px; letter-spacing: .6px; color: var(--nav-active-text); background: var(--surface-environment); border: 1px solid var(--nav-active-border); padding: 2px 6px; border-radius: var(--radius-sm); white-space: nowrap; }
.header-club { display: flex; align-items: center; gap: var(--space-2); height: var(--control-height-md); border: 1px solid var(--border-default); border-radius: var(--radius-md); padding: 0 var(--space-2); background: var(--surface-panel); color: var(--text-secondary); font-size: var(--font-caption); white-space: nowrap; }
.header-club:disabled { cursor: default; }
.application-user { display: flex; align-items: center; gap: var(--space-2); padding-left: var(--space-3); border-left: 1px solid var(--border-default); font-size: var(--font-caption); white-space: nowrap; }
.application-user small { display: block; color: var(--text-muted); font-size: 10px; }
.user-avatar { width: 30px; height: 30px; border-radius: var(--radius-md); display: grid; place-items: center; background: var(--surface-avatar); color: var(--action-primary); }
.erp-sidebar { background: var(--surface-sidebar); border-right: 1px solid var(--border-default); display: flex; flex-direction: column; min-height: 0; z-index: var(--z-sidebar); }
.erp-sidebar nav { overflow-y: auto; padding: var(--space-2); }
.nav-section { margin: var(--space-4) var(--space-2) var(--space-1); font-size: 10px; letter-spacing: .8px; color: var(--text-muted); font-weight: 600; }
.nav-section:first-child { margin-top: var(--space-1); }
.nav-item { height: 34px; width: 100%; display: flex; align-items: center; gap: var(--space-3); padding: 0 var(--space-2); background: transparent; border: 1px solid transparent; text-decoration: none; text-align: left; color: var(--text-secondary); border-radius: var(--radius-sm); white-space: nowrap; }
.nav-item:disabled { color: var(--text-muted); cursor: default; }
.nav-item .erp-icon { width: 17px; height: 17px; }
.nav-item.active { color: var(--nav-active-text); background: var(--nav-active-surface); border-color: var(--nav-active-border); font-weight: 600; position: relative; }
.nav-item.active::before { position: absolute; content: ''; left: -9px; top: 4px; bottom: 4px; width: 3px; background: var(--nav-active-marker); }
.nav-item:not(:disabled):hover { background: var(--hover); }
.nav-version { margin-left: auto; font-size: 10px; }
.sidebar-bottom { margin-top: auto; padding: var(--space-3) var(--space-4); border-top: 1px solid var(--border-subtle); display: flex; gap: var(--space-2); align-items: center; color: var(--text-secondary); font-size: var(--font-caption); }
.sidebar-bottom small { display: block; font-size: 10px; color: var(--text-muted); }
.collapsed .nav-section span, .collapsed .nav-item span, .collapsed .sidebar-bottom span { display: none; }
.collapsed .nav-section { height: 1px; background: var(--border-subtle); margin: 12px 4px 6px; }
.collapsed .nav-item { justify-content: center; padding: 0; }.collapsed .sidebar-bottom { padding: 14px 18px; }
.erp-workspace { display: flex; flex-direction: column; min-height: 0; min-width: 0; overflow: hidden; }
.workspace-title { min-height: 68px; flex-shrink: 0; padding: 10px var(--space-4); background: var(--surface-panel); display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); border-bottom: 1px solid var(--border-default); }
.page-heading { min-width: 0; }.page-description { margin-top: var(--space-1); font-size: var(--font-caption); color: var(--text-secondary); }
.page-header-actions { display: flex; align-items: center; gap: var(--space-2); }
.breadcrumb { font-size: 11px; color: var(--text-muted); margin-bottom: 2px; }
.version-label { display: inline-block; font-size: 11px; font-weight: 400; color: var(--text-secondary); margin-left: var(--space-2); border: 1px solid var(--border-default); border-radius: var(--radius-sm); padding: 1px 5px; vertical-align: middle; }
.workspace-note { display: flex; align-items: center; gap: var(--space-2); color: var(--text-secondary); font-size: 11px; }
.erp-toolbar { display: flex; gap: var(--space-2); align-items: center; height: var(--toolbar-height); min-height: var(--toolbar-height); padding: 0 var(--space-4); border-bottom: 1px solid var(--border-default); background: var(--surface-subtle); }
.erp-toolbar .erp-button { height: var(--control-height-sm); }.toolbar-separator { height: 20px; border-left: 1px solid var(--border-default); margin: 0 var(--space-1); }.toolbar-spacer, .status-spacer { flex: 1; }
.erp-status-bar { grid-column: 1 / -1; display: flex; align-items: center; height: var(--status-height); border-top: 1px solid var(--border-default); background: var(--surface-panel); color: var(--text-secondary); font-size: 11px; white-space: nowrap; }
.erp-status-bar > span:not(.status-spacer) { display: inline-flex; align-items: center; gap: 6px; padding: 0 var(--space-3); border-right: 1px solid var(--border-subtle); }
.status-dot { width: 6px; height: 6px; background: var(--identity-accent); border-radius: 50%; }
.workspace-content { padding: var(--space-4); overflow: auto; }.workspace-availability { display: flex; gap: var(--space-3); align-items: flex-start; border: 1px solid var(--border-default); background: var(--surface-panel); padding: var(--space-4); }
.workspace-availability p { color: var(--text-secondary); margin-top: var(--space-1); }.workspace-availability .erp-button { margin-top: var(--space-3); }
#blazor-error-ui { display: none; position: fixed; bottom: 0; left: 0; right: 0; background: var(--surface-danger); padding: var(--space-3); z-index: var(--z-critical); border-top: 2px solid var(--state-danger); }
@media (max-width: 1200px) { .header-search { margin-left: 0; } .header-context { gap: var(--space-2); } .environment-tag { display: none; } }
@media (max-width: 1000px) { .workspace-note, .erp-toolbar > .caption, .application-user > span:last-child, .header-club span { display: none; } .header-tools { gap: var(--space-2); } }