:root{--app-bg:#f5f7fb;--app-card-bg:#fff;--app-elevated-bg:#fff;--app-muted-bg:#f4f6f8;--app-border-color:#e5e7eb;--app-shadow:0 2px 12px #00000012;--app-shadow-soft:0 2px 10px #0000000f;--app-login-bg:linear-gradient(135deg, #1677ff14, #52c41a14);font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif}body[data-theme=dark]{--app-bg:#0f1115;--app-card-bg:#171b22;--app-elevated-bg:#1d232c;--app-muted-bg:#252d38;--app-border-color:#303849;--app-shadow:0 12px 32px #00000059;--app-shadow-soft:0 8px 24px #00000047;--app-login-bg:radial-gradient(circle at top, #1677ff2e, #0a0e16 58%)}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{min-height:100%}body{background:var(--app-bg);transition:background-color .2s,color .2s}