:root,:root[data-theme=light]{--app-bg: #f8fafc;--app-text: #0f172a;--app-muted: #64748b;--app-border: #e2e8f0;--app-card: #ffffff;--banner-bg: #fef3c7;--banner-text: #78350f;--banner-link: #1d4ed8}:root[data-theme=dark]{--app-bg: #0b1220;--app-text: #e2e8f0;--app-muted: #94a3b8;--app-border: #1e293b;--app-card: #111a2e;--banner-bg: #3b2f0b;--banner-text: #fde68a;--banner-link: #93c5fd}html,body{margin:0;padding:0}body{font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--app-bg);color:var(--app-text);-webkit-font-smoothing:antialiased}.responsive-table{overflow-x:auto;-webkit-overflow-scrolling:touch}@media (max-width: 640px){.grid{grid-template-columns:1fr!important}}@media (max-width: 768px){button,input[type=submit],input[type=button],input,select,textarea{min-height:40px}}