.app-shell { min-height: 100dvh; }
.app-body { min-height: 100dvh; margin-left: var(--sidebar-width); display: flex; flex-direction: column; }
.navigation-disclosure { position: relative; z-index: 30; }
.nav-toggle { display: none; }
.navigation-disclosure:not([open]) > .sidebar { display: flex; }
.sidebar { position: fixed; inset: 0 auto 0 0; width: var(--sidebar-width); display: flex; flex-direction: column; background: var(--color-surface); border-right: 1px solid var(--color-border); }
.sidebar-brand { min-height: var(--header-height); display: flex; align-items: center; padding: 0 var(--space-6); color: var(--color-text-primary); }
.sidebar-brand:hover { text-decoration: none; }
.sidebar-cta { padding: var(--space-6) var(--space-5) var(--space-2); }
.sidebar-cta .button { width: 100%; }
.sidebar-coming { display: block; text-align: center; color: var(--color-text-secondary); font-size: .625rem; margin-top: var(--space-1); }
.sidebar-nav { flex: 1; overflow-y: auto; padding: var(--space-4) var(--space-3); }
.nav-item { min-height: 44px; display: flex; align-items: center; gap: var(--space-3); padding: var(--space-3); margin-bottom: var(--space-1); border-radius: var(--radius-sm); color: var(--color-text-secondary); border-left: 3px solid transparent; font-weight: 500; }
.nav-item.active { background: var(--color-info-bg); border-left-color: var(--color-action); color: var(--color-info-text); }
.nav-item:hover { text-decoration: none; }
.unavailable { cursor: default; }
.nav-section { margin: var(--space-6) var(--space-4) var(--space-2); font-size: .625rem; letter-spacing: .12em; font-weight: 650; text-transform: uppercase; color: var(--color-text-secondary); }
.sidebar-footer { padding: var(--space-5) var(--space-6); border-top: 1px solid var(--color-border); color: var(--color-text-secondary); font-size: var(--font-size-xs); display: flex; align-items: center; gap: var(--space-2); }
.status-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--color-action); }
.app-header { min-height: var(--header-height); padding: var(--space-4) var(--space-10); display: flex; justify-content: space-between; align-items: center; gap: var(--space-4); background: var(--color-surface); border-bottom: 1px solid var(--color-border); }
.header-context { color: var(--color-text-secondary); font-size: var(--font-size-xs); white-space: nowrap; }
.header-brand { display: none; color: var(--color-text-primary); }
.header-context strong { color: var(--color-text-primary); font-weight: 500; }
.header-separator { margin: 0 var(--space-3); color: var(--color-border); }
.header-actions { display: flex; align-items: center; gap: var(--space-5); min-width: 0; }
.company-label { display: flex; align-items: center; gap: var(--space-2); min-width: 0; font-size: var(--font-size-xs); }
.company-label span { max-width: 200px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.company-label .icon { color: var(--color-text-secondary); }
.user-menu { position: relative; }
.user-menu summary { display: flex; align-items: center; gap: var(--space-2); list-style: none; }
.user-menu summary::-webkit-details-marker, .nav-toggle::-webkit-details-marker { display: none; }
.user-menu summary > .icon { width: 13px; transform: rotate(90deg); color: var(--color-text-secondary); }
.user-label { max-width: 100px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: var(--font-size-xs); }
.avatar { width: 34px; height: 34px; display: inline-grid; place-items: center; background: var(--color-info-bg); color: var(--color-info-text); border: 1px solid var(--color-info-border); border-radius: 50%; font-size: var(--font-size-xs); font-weight: 650; }
.user-dropdown { position: absolute; right: 0; top: calc(100% + var(--space-4)); min-width: 220px; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: var(--space-2); box-shadow: var(--shadow-md); z-index: 40; }
.menu-identity { padding: var(--space-2) var(--space-3); border-bottom: 1px solid var(--color-border); color: var(--color-text-secondary); overflow-wrap: anywhere; }
.dropdown-item { display: flex; align-items: center; gap: var(--space-3); width: 100%; padding: var(--space-3); color: var(--color-text-primary); background: transparent; border: 0; border-radius: var(--radius-sm); text-align: left; }
.dropdown-item:hover { background: var(--color-surface-raised); text-decoration: none; }
.main-content { flex: 1; width: 100%; max-width: var(--content-width); margin: 0 auto; padding: var(--space-10); }
.app-footer { display: flex; justify-content: space-between; gap: var(--space-4); margin: 0 var(--space-10); padding: var(--space-5) 0; border-top: 1px solid var(--color-border); color: var(--color-text-secondary); font-size: .6875rem; }
.welcome-panel { display: flex; align-items: center; justify-content: space-between; gap: var(--space-8); min-height: 280px; padding: var(--space-10); border: 1px solid var(--color-border); border-radius: var(--radius-lg); background: var(--color-surface); box-shadow: var(--shadow-sm); }
.welcome-copy { max-width: 560px; }
.welcome-copy h2 { font-size: var(--font-size-xl); margin: var(--space-5) 0 var(--space-3); }
.welcome-copy p + p { margin-top: var(--space-3); }
.workspace-symbol { display: grid; place-items: center; flex-shrink: 0; width: 120px; height: 120px; background: var(--color-info-bg); color: var(--color-info-text); border: 1px solid var(--color-info-border); border-radius: 28px; }
.workspace-symbol .icon { width: 58px; height: 58px; stroke-width: 1; }
.workspace-caption { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-2); padding: var(--space-6) 0; color: var(--color-text-secondary); font-size: var(--font-size-xs); }
.workspace-caption a { margin-left: auto; }
.auth-layout { min-height: 100dvh; display: grid; grid-template-columns: 47% 53%; }
.auth-brand { background: var(--color-brand); color: var(--color-brand-text); padding: var(--space-12) var(--space-16); display: flex; flex-direction: column; overflow: hidden; }
.auth-story { flex: 1; display: flex; flex-direction: column; justify-content: center; max-width: 440px; padding: var(--space-12) 0; }
.auth-story .eyebrow { color: var(--color-highlight); }
.auth-story h1 { font-size: clamp(2rem, 3.6vw, 3.5rem); line-height: 1.16; margin: var(--space-6) 0; font-weight: 550; }
.auth-story h1 span { color: var(--color-highlight); }
.auth-story > p:not(.eyebrow) { color: var(--color-brand-muted); max-width: 320px; font-size: var(--font-size-md); }
.auth-brand-footer { font-size: .625rem; letter-spacing: .18em; color: var(--color-brand-muted); }
.brand-structure { width: 280px; display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-3); margin-top: var(--space-12); opacity: .75; transform: rotate(-6deg); }
.structure-line { grid-column: span 2; width: 45%; height: 4px; background: var(--color-highlight); border-radius: var(--radius-sm); margin-bottom: var(--space-3); }
.structure-cell { height: 52px; border-radius: var(--radius-md); background: var(--color-surface-raised); border: 1px solid var(--color-brand-muted); opacity: .35; }
.cell-wide { grid-column: span 2; }
.cell-accent { border-color: var(--color-highlight); background: var(--color-action); opacity: .8; }
.cell-outline { background: transparent; opacity: .2; }
.auth-panel { display: flex; flex-direction: column; background: var(--color-bg); }
.auth-header { min-height: 100px; padding: var(--space-6) var(--space-10); display: flex; align-items: center; justify-content: flex-end; }
.auth-mobile-brand { display: none; }
.auth-main { flex: 1; display: flex; flex-direction: column; justify-content: center; width: 100%; max-width: 440px; padding: var(--space-8); margin: 0 auto; }
.login-symbol { display: inline-grid; place-items: center; width: 44px; height: 44px; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface); color: var(--color-action); margin-bottom: var(--space-8); }
.login-form .eyebrow { margin-bottom: var(--space-3); }
.login-form h2 { font-size: var(--font-size-xl); }
.login-description { margin: var(--space-3) 0 var(--space-8); }
.login-submit { width: 100%; justify-content: space-between; margin-top: var(--space-2); }
.login-note { padding-top: var(--space-6); margin-top: var(--space-6); border-top: 1px solid var(--color-border); color: var(--color-text-secondary); font-size: var(--font-size-xs); }
.auth-footer { color: var(--color-text-secondary); text-align: center; font-size: .6875rem; padding: var(--space-8); }
@media (max-width: 1100px) {
  .header-context { display: none; }
  .header-actions { margin-left: auto; }
  .auth-brand { padding: var(--space-10); }
  .app-header { padding-inline: var(--space-6); }
  .main-content { padding: var(--space-8); }
  .workspace-symbol { width: 80px; height: 80px; }
}
@media (max-width: 800px) {
  .app-body { margin-left: 0; }
  .navigation-disclosure:not([open]) > .sidebar { display: none; }
  .nav-toggle { position: absolute; display: grid; place-items: center; width: 40px; height: 40px; left: var(--space-4); top: 20px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); background: var(--color-surface); list-style: none; }
  .sidebar { top: var(--header-height); bottom: auto; height: calc(100dvh - var(--header-height)); max-height: 800px; box-shadow: var(--shadow-md); }
  .sidebar-brand { display: none; }
  .app-header { padding-left: 72px; gap: var(--space-2); }
  .header-brand { display: inline-flex; }
  .header-brand .brand > span:last-child { display: none; }
  .header-actions { width: 100%; justify-content: flex-end; gap: var(--space-3); }
  .company-label { flex: 1; justify-content: flex-end; }
  .company-label span { max-width: 180px; }
  .user-label { display: none; }
  .main-content { padding: var(--space-6); }
  .app-footer { margin-inline: var(--space-6); }
  .auth-layout { display: block; }
  .auth-brand { display: none; }
  .auth-panel { min-height: 100dvh; }
  .auth-mobile-brand { display: inline; margin-right: auto; }
  .auth-header { padding-inline: var(--space-6); }
  .auth-main { max-width: 460px; padding: var(--space-6); }
  .welcome-panel { padding: var(--space-6); min-height: 240px; }
  .workspace-symbol { display: none; }
}
@media (max-width: 420px) {
  .company-label .icon, .user-menu summary > .icon { display: none; }
  .company-label span { max-width: 115px; }
  .app-header { padding-right: var(--space-4); }
  .main-content { padding: var(--space-5); }
  .app-footer span { display: none; }
}