:root{--app-bg:#f4f6f8;--app-border:#d8dee6;--app-text:#1f2933;--app-muted:#667085;--app-accent:#2563eb}body{background:var(--app-bg);color:var(--app-text)}a{color:inherit;text-decoration:none}.admin-shell,.admin-sidebar{min-height:100vh}.admin-sidebar{width:240px;background:#111827}.admin-sidebar a{color:#cbd5e1}.admin-sidebar .active,.admin-sidebar a:hover{color:#ffffff;background:rgba(255,255,255,.08)}.content-panel{border:1px solid var(--app-border);border-radius:8px;background:#ffffff}.btn,.form-control,.form-select{border-radius:6px}