:root{--background:#f8fafc;--foreground:#0f172a;--primary:#4f46e5;--primary-hover:#4338ca;--secondary:#e2e8f0;--secondary-foreground:#1e293b;--accent:#38bdf8;--danger:#ef4444;--success:#10b981;--warning:#f59e0b;--border:#cbd5e1;--card:#fff;--card-foreground:#0f172a;--ring:#4f46e580;--radius:.75rem}[data-theme=dark]{--background:#0f172a;--foreground:#f8fafc;--primary:#6366f1;--primary-hover:#818cf8;--secondary:#1e293b;--secondary-foreground:#f8fafc;--accent:#38bdf8;--danger:#ef4444;--success:#10b981;--warning:#fbbf24;--border:#334155;--card:#1e293b;--card-foreground:#f8fafc}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--background);color:var(--foreground);font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.5;transition:background-color .3s,color .3s}.premium-card{background:var(--card);border-radius:var(--radius);border:1px solid var(--border);padding:1.5rem;transition:transform .2s,box-shadow .2s;box-shadow:0 4px 6px -1px #0000000d,0 2px 4px -1px #00000008}.premium-card:hover{transform:translateY(-2px);box-shadow:0 10px 15px -3px #0000001a,0 4px 6px -2px #0000000d}.premium-btn{background:var(--primary);color:#fff;border-radius:calc(var(--radius) - .25rem);cursor:pointer;border:none;padding:.5rem 1rem;font-weight:500;transition:background-color .2s,transform .1s,box-shadow .2s}.premium-btn:hover{background:var(--primary-hover);box-shadow:0 0 0 3px var(--ring)}.premium-btn:active{transform:scale(.98)}.premium-input{border:1px solid var(--border);border-radius:calc(var(--radius) - .25rem);background:var(--background);width:100%;color:var(--foreground);padding:.5rem .75rem;transition:border-color .2s,box-shadow .2s}.premium-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--ring);outline:none}a{text-decoration:none}