.container { width: min(1320px, calc(100% - 40px)); margin-inline: auto; }
.app-shell { min-height: 100vh; display: grid; grid-template-columns: 240px minmax(0, 1fr); }
.sidebar { position: sticky; top: 0; height: 100vh; overflow-y: auto; background: var(--card); border-right: 1px solid var(--rule); display: flex; flex-direction: column; padding: 28px 18px; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-size: 1.2rem; font-weight: 800; letter-spacing: -.03em; }
.brand-mark { width: 34px; height: 34px; display: grid; place-items: center; background: var(--accent); color: var(--ink); border: 1px solid var(--rule); border-radius: 9px; box-shadow: 0 2px 8px -2px rgba(163, 230, 53, 0.4); font-size: 1.1rem; }
.brand small { font-size: .65rem; letter-spacing: .08em; padding: 3px 6px; background: var(--surface2); border-radius: 6px; }
.side-nav { display: grid; gap: 4px; }
.nav-group-label { font-size: .6875rem; letter-spacing: .12em; font-weight: 750; text-transform: uppercase; color: var(--muted); padding: 18px 12px 6px; }
.nav-group-label:first-child { padding-top: 0; }
.side-nav a { display: flex; align-items: center; gap: 12px; min-height: 42px; padding: 10px 14px; border: 1px solid transparent; border-radius: 10px; font-size: .875rem; font-weight: 600; transition: all 0.15s ease; }
.side-nav a:hover { background: var(--surface2); color: var(--text); }
.side-nav a.active { background: var(--surface2); color: var(--text); border-color: var(--line); box-shadow: 0 1px 3px rgba(0,0,0,0.1); }
.side-nav svg { width: 19px; height: 19px; }
.sidebar-footer { margin-top: auto; display: grid; gap: 10px; padding-top: 20px; border-top: 1px solid var(--rule); }
.sidebar-footer .btn, .theme-toggle { justify-content: flex-start; }
.theme-toggle { display: inline-flex; gap: 10px; align-items: center; border: 0; background: transparent; color: var(--muted); padding: 10px 12px; font-size: .875rem; min-height: 40px; border-radius: 7px; }
.theme-toggle:hover { background: var(--surface2); }
.main-panel { min-width: 0; display: flex; flex-direction: column; }
.topbar { position: sticky; top: 0; z-index: 40; min-height: 72px; border-bottom: 1px solid var(--rule); display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 14px 34px; background: var(--card); }
.topbar-context { display: flex; align-items: center; gap: 10px; font-size: .875rem; }
.topbar-context span { color: var(--muted); }
.topbar-actions { display: flex; align-items: center; gap: 14px; }
.mobile-menu { display: none; }
.page, .content { flex: 1; max-width: 1450px; padding: 32px 34px 60px; margin: 0 auto; width: 100%; }
.page > :is(.card, .split, .table-wrap, .kpi-grid, section, .form-grid) { margin-bottom: 24px; }
.page-heading, .page-head, .proxy-page-heading, .products-heading, .atlas-overview { display: flex; justify-content: space-between; align-items: center; gap: 24px; margin-bottom: 28px; }
.page-heading p, .page-head p, .proxy-page-heading p, .products-heading p, .atlas-overview p { margin: 0; max-width: 620px; color: var(--muted); }
.page-heading .eyebrow, .atlas-overview .eyebrow { display: none; }
.atlas-overview-actions { display: flex; gap: 10px; flex-shrink: 0; }
.kpi-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.kpi-grid .card { border: 1px solid var(--line); min-height: 125px; padding: 22px; border-radius: 14px; background: var(--card); box-shadow: var(--shadow); }
.kpi-grid .muted { font-size: .875rem; }
.kpi { font-family: 'JetBrains Mono', monospace; font-variant-numeric: tabular-nums lining-nums; font-size: clamp(1.35rem, 2.2vw, 2rem); font-weight: 800; letter-spacing: -.03em; margin-top: 14px; overflow-wrap: anywhere; }
.split, .grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.atlas-section-head, .section-title { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-bottom: 18px; }
.atlas-section-head .eyebrow { display: none; }
.atlas-section-head h2 { margin: 0; }
.atlas-section-head a { font-size: .875rem; }
.quick-links { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-bottom: 28px; }
.quick-link { display: flex; gap: 14px; padding: 20px; background: var(--card); border: 1px solid var(--rule); border-radius: var(--radius); }
.quick-link:hover { border-color: var(--text); }
.quick-link svg { background: var(--surface2); width: 42px; height: 42px; padding: 10px; border-radius: 9px; }
.quick-link strong, .quick-link small { display: block; }
.quick-link strong { font-size: .9375rem; margin-bottom: 4px; }
.quick-link small { line-height: 1.5; }
.admin-shell { --accent: #d1c3f8; }
.admin-shell .kpi-grid .card:first-child .muted { color: #423459; }
.settings-page > section { max-width: 920px; }
.sidebar-backdrop { display: none; }
@media (max-width: 1200px) { .split { grid-template-columns: 1fr; } .page-heading, .atlas-overview { align-items: flex-start; flex-wrap: wrap; } .kpi-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 900px) {
  .app-shell { grid-template-columns: minmax(0, 1fr); }
  .sidebar { position: fixed; z-index: 110; top: 0; left: 0; width: min(300px, 85vw); transform: translateX(-100%); transition: transform .2s; }
  .sidebar.open { transform: translateX(0); }
  .sidebar-backdrop.show { display: block; position: fixed; inset: 0; background: #0008; z-index: 100; }
  .sidebar-open { overflow: hidden; }
  .mobile-menu { display: inline-flex; }
  .topbar { padding: 12px 20px; }
  .page, .content { padding: 24px 20px 45px; }
  .quick-links { grid-template-columns: 1fr; }
}
@media (max-width: 560px) { .kpi-grid { gap: 10px; } .kpi-grid .card { padding: 16px; } .grid-3, .grid-4 { grid-template-columns: 1fr; } .page, .content { padding: 24px 14px; } .topbar-context > span { display: none; } .atlas-overview-actions { width: 100%; flex-wrap: wrap; } .topbar-actions .section-link { display: none; } }