*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}:root{--bg:#fafafa;--bg-card:#fff;--bg-input:#fff;--text:#1a1a1a;--text-secondary:#777;--text-muted:#aaa;--text-faint:#ccc;--border:#eee;--border-input:#e0e0e0;--divider:#f5f5f5;--skeleton:#e5e5e5;--nav-bg:#fff;--header-bg:#fafafa;--pill-bg:#f5f5f5;--toggle-bg:#f0f0f0;--green-bg:#dcfce7;--green-text:#16a34a;--red-bg:#fee2e2;--red-text:#ef4444;--amber-bg:#fffbeb;--amber-text:#d97706;--result-bg:#f0fdf4;--result-text:#16a34a}.dark{--bg:#111;--bg-card:#1a1a1a;--bg-input:#222;--text:#ddd;--text-secondary:#999;--text-muted:#666;--text-faint:#555;--border:#2a2a2a;--border-input:#333;--divider:#252525;--skeleton:#2a2a2a;--nav-bg:#161616;--header-bg:#111;--pill-bg:#222;--toggle-bg:#2a2a2a;--green-bg:#1a2e1a;--green-text:#4ade80;--red-bg:#2e1a1a;--red-text:#f87171;--amber-bg:#2e2510;--amber-text:#fbbf24;--result-bg:#1a2e1a;--result-text:#4ade80}body,html{-webkit-text-size-adjust:100%}.app-shell,body,html{overflow:hidden;width:100%;height:100%;height:100dvh}.app-shell{display:flex;flex-direction:column;background:var(--bg);color:var(--text);transition:background .2s ease,color .2s ease}.app-header{flex-shrink:0;display:flex;align-items:center;gap:8px;padding:12px 16px;border-bottom:1px solid var(--border);cursor:pointer;background:var(--header-bg)}.app-content,.app-header{transition:background .2s ease}.app-content{flex:1;overflow-y:auto;overflow-x:hidden;-webkit-overflow-scrolling:touch;background:var(--bg)}.app-nav{flex-shrink:0;display:flex;background:var(--nav-bg);border-top:1px solid var(--border);padding-top:6px;padding-bottom:calc(8px + env(safe-area-inset-bottom, 0px));transition:background .2s ease}::-webkit-scrollbar{display:none}button,input,select,textarea{font-size:16px}button{transition:transform .1s ease}button:active{transform:scale(.96)}@keyframes fadeIn{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fadeIn .3s ease-out both}@keyframes pulse{0%,to{opacity:.4}50%{opacity:.15}}.skeleton{background:var(--skeleton);border-radius:8px;animation:pulse 1.2s ease-in-out infinite}