:root{--background:#fff;--foreground:#0a0a0a;--card:#fff;--card-foreground:#0a0a0a;--popover:#fff;--popover-foreground:#0a0a0a;--primary:#171717;--primary-foreground:#fafafa;--secondary:#f5f5f5;--secondary-foreground:#171717;--muted:#f5f5f5;--muted-foreground:#737373;--accent:#f5f5f5;--accent-foreground:#171717;--destructive:#ef4444;--destructive-foreground:#fafafa;--border:#e5e5e5;--input:#e5e5e5;--ring:#0a0a0a;--radius:0.5rem}*{margin:0;padding:0;box-sizing:border-box;border-color:var(--border)}body,html{height:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:var(--background);color:var(--foreground);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}:focus-visible{outline:2px solid var(--ring);outline-offset:2px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 16px;font-size:14px;font-weight:500;border-radius:var(--radius);border:none;cursor:pointer;transition:background-color .15s,color .15s,opacity .15s}.btn:disabled{pointer-events:none;opacity:.5}.btn-primary{background:var(--primary);color:var(--primary-foreground)}.btn-primary:hover{opacity:.9}.btn-secondary{background:var(--secondary);color:var(--secondary-foreground)}.btn-secondary:hover{background:#3f3f46}.btn-ghost{background:transparent;color:var(--foreground)}.btn-ghost:hover{background:var(--accent)}.btn-destructive{background:var(--destructive);color:var(--destructive-foreground)}.btn-destructive:hover{opacity:.9}.input{width:100%;padding:10px 12px;font-size:14px;background:var(--background);border:1px solid var(--input);border-radius:var(--radius);color:var(--foreground);transition:border-color .15s}.input::placeholder{color:var(--muted-foreground)}.input:focus{outline:none;border-color:var(--ring)}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius)}