:root{--bg-color:#f1f5f9;--card-bg:#fff;--text-primary:#334155;--text-secondary:#94a3b8;--accent-color:#3b82f6;--accent-soft:#dbeafe;--success-color:#10b981;--success-bg:#d1fae5;--error-color:#ef4444;--error-bg:#fee2e2;--caret-color:#0ea5e9;--font-sans:"Inter",sans-serif;--font-mono:"JetBrains Mono",monospace;--shadow-sm:0 1px 2px 0 #0000000d;--shadow-md:0 4px 6px -1px #0000001a,0 2px 4px -2px #0000001a}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-color);color:var(--text-primary);font-family:var(--font-sans);justify-content:center;align-items:center;width:100vw;height:100vh;display:flex;overflow-x:hidden}#root{flex-direction:column;width:100%;height:100%;display:flex}.card{background:var(--card-bg);box-shadow:var(--shadow-sm);border-radius:12px;width:100%;padding:2rem;transition:box-shadow .3s}.card:hover{box-shadow:var(--shadow-md)}.fade-in{opacity:0;animation:.4s cubic-bezier(.16,1,.3,1) forwards fadeIn}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)scale(.98)}to{opacity:1;transform:translateY(0)scale(1)}}.mono{font-family:var(--font-mono)}.primary-btn{background:var(--text-primary);color:#fff;cursor:pointer;border:none;border-radius:8px;padding:.75rem 1.5rem;font-weight:500;transition:all .2s}.primary-btn:hover{box-shadow:var(--shadow-md);transform:translateY(-1px)}.lang-toggle{background:var(--card-bg);color:var(--text-primary);cursor:pointer;border:1px solid #cbd5e1;border-radius:6px;margin-left:1rem;padding:.4rem .8rem;font-size:.8rem;font-weight:600}.gold-text{color:var(--accent-color);font-weight:600}